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xuchengsheng_spring-reading
spring-reading/spring-beans/spring-bean-annotatedBeanDefinitionReader/src/main/java/com/xcs/spring/AnnotatedBeanDefinitionReaderDemo.java
AnnotatedBeanDefinitionReaderDemo
main
class AnnotatedBeanDefinitionReaderDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建一个 AnnotationConfigApplicationContext DefaultListableBeanFactory factory = new DefaultListableBeanFactory(); // 创建 AnnotatedBeanDefinitionReader 并将其关联到容器 AnnotatedBeanDefinitionReader reader = new AnnotatedBeanDefinitionReader(factory); // 使用 AnnotatedBeanDefinitionReader 注册Bean对象 reader.registerBean(MyBean.class); // 获取并打印 MyBean System.out.println("MyBean = " + factory.getBean(MyBean.class));
38
132
170
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-beans/spring-bean-beanDefinition/src/main/java/com/xcs/spring/BeanDefinitionDemo.java
BeanDefinitionDemo
main
class BeanDefinitionDemo { public static void main(String[] args) throws Exception {<FILL_FUNCTION_BODY>} private static BeanDefinition createBeanDefinition() throws IOException { SimpleMetadataReaderFactory metadataReaderFactory = new SimpleMetadataReaderFactory(); MetadataReader metadataReader = metadataReaderFactory.getMetadataReader(MyBean.class.getName()); ScannedGenericBeanDefinition beanDefinition = new ScannedGenericBeanDefinition(metadataReader); beanDefinition.setScope("singleton"); beanDefinition.setLazyInit(true); beanDefinition.setPrimary(true); beanDefinition.setAbstract(false); beanDefinition.setInitMethodName("init"); beanDefinition.setDestroyMethodName("destroy"); beanDefinition.setAutowireCandidate(true); beanDefinition.setRole(BeanDefinition.ROLE_APPLICATION); beanDefinition.setDescription("This is a custom bean definition"); beanDefinition.setResourceDescription("com.xcs.spring.BeanDefinitionDemo"); beanDefinition.getPropertyValues().add("name", "lex"); beanDefinition.getPropertyValues().add("age", "18"); return beanDefinition; } }
DefaultListableBeanFactory beanFactory = new DefaultListableBeanFactory(); beanFactory.registerBeanDefinition("myBean", createBeanDefinition()); // 获取MyBean MyBean myChildBean = beanFactory.getBean("myBean", MyBean.class); // 打印Bean对象 System.out.println("MyBean = " + myChildBean); // 销毁myBean beanFactory.destroySingleton("myBean");
289
111
400
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-beans/spring-bean-beanDefinition/src/main/java/com/xcs/spring/bean/MyBean.java
MyBean
toString
class MyBean { private String name; private String age; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getAge() { return age; } public void setAge(String age) { this.age = age; } public void init(){ System.out.println("execute com.xcs.spring.bean.MyBean.init"); } public void destroy(){ System.out.println("execute com.xcs.spring.bean.MyBean.destroy"); } @Override public String toString() {<FILL_FUNCTION_BODY>} }
return "MyBean{" + "name='" + name + '\'' + ", age='" + age + '\'' + '}';
194
40
234
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-beans/spring-bean-beanDefinitionHolder/src/main/java/com/xcs/spring/BeanDefinitionHolderDemo.java
BeanDefinitionHolderDemo
main
class BeanDefinitionHolderDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建一个 DefaultListableBeanFactory,它是 BeanDefinitionRegistry 的一个实现 DefaultListableBeanFactory beanFactory = new DefaultListableBeanFactory(); // 创建一个新的 BeanDefinition 对象 GenericBeanDefinition beanDefinition = new GenericBeanDefinition(); beanDefinition.setBeanClass(MyBean.class); // Bean名称 String beanName = "myBean"; // 设置别名(aliases) String[] aliases = {"myBeanX", "myBeanY"}; // 创建一个 BeanDefinitionHolder,将 BeanDefinition 与名称关联起来 BeanDefinitionHolder beanDefinitionHolder = new BeanDefinitionHolder(beanDefinition, beanName, aliases); // 使用 BeanDefinitionReaderUtils 注册 BeanDefinitionHolder BeanDefinitionReaderUtils.registerBeanDefinition(beanDefinitionHolder, beanFactory); System.out.println("myBean = " + beanFactory.getBean("myBean")); System.out.println("myBeanX = " + beanFactory.getBean("myBeanX")); System.out.println("myBeanY = " + beanFactory.getBean("myBeanY"));
36
286
322
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-beans/spring-bean-beanDefinitionRegistry/src/main/java/com/xcs/spring/BeanDefinitionRegistryDemo.java
BeanDefinitionRegistryDemo
main
class BeanDefinitionRegistryDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建一个BeanFactory,它是BeanDefinitionRegistry DefaultListableBeanFactory beanFactory = new DefaultListableBeanFactory(); // 创建一个Bean定义 GenericBeanDefinition beanDefinition = new GenericBeanDefinition(); beanDefinition.setBeanClass(MyBean.class); // 注册Bean定义到BeanFactory beanFactory.registerBeanDefinition("myBean", beanDefinition); // 获取BeanDefinition BeanDefinition retrievedBeanDefinition = beanFactory.getBeanDefinition("myBean"); System.out.println("Bean定义的类名 = " + retrievedBeanDefinition.getBeanClassName()); // 检查Bean定义是否存在 boolean containsBeanDefinition = beanFactory.containsBeanDefinition("myBean"); System.out.println("Bean定义是否包含(myBean) = " + containsBeanDefinition); // 获取所有Bean定义的名称 String[] beanDefinitionNames = beanFactory.getBeanDefinitionNames(); System.out.println("Bean定义的名称 = " + String.join(", ", beanDefinitionNames)); // 获取Bean定义的数量 int beanDefinitionCount = beanFactory.getBeanDefinitionCount(); System.out.println("Bean定义的数量 = " + beanDefinitionCount); // 检查Bean名称是否已被使用 boolean isBeanNameInUse = beanFactory.isBeanNameInUse("myBean"); System.out.println("Bean名称(myBean)是否被使用 = " + isBeanNameInUse); // 移除Bean定义 beanFactory.removeBeanDefinition("myBean"); System.out.println("Bean定义已被移除(myBean)");
36
412
448
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-beans/spring-bean-classPathBeanDefinitionScanner/src/main/java/com/xcs/spring/ClassPathBeanDefinitionScannerDemo.java
ClassPathBeanDefinitionScannerDemo
main
class ClassPathBeanDefinitionScannerDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建一个 AnnotationConfigApplicationContext DefaultListableBeanFactory factory = new DefaultListableBeanFactory(); // 创建 ClassPathBeanDefinitionScanner 并将其关联到容器 ClassPathBeanDefinitionScanner scanner = new ClassPathBeanDefinitionScanner(factory); // 使用 ClassPathBeanDefinitionScanner的scan方法扫描Bean对象 scanner.scan("com.xcs.spring"); System.out.println("MyController = " + factory.getBean(MyController.class)); System.out.println("MyService = " + factory.getBean(MyService.class)); System.out.println("MyRepository = " + factory.getBean(MyRepository.class));
38
174
212
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-beans/spring-bean-groovyBeanDefinitionReader/src/main/java/com/xcs/spring/GroovyBeanDefinitionReaderDemo.java
GroovyBeanDefinitionReaderDemo
main
class GroovyBeanDefinitionReaderDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建一个 Spring IOC 容器 DefaultListableBeanFactory factory = new DefaultListableBeanFactory(); // 创建一个 GroovyBeanDefinitionReader GroovyBeanDefinitionReader reader = new GroovyBeanDefinitionReader(factory); // 加载 Groovy 文件并注册 Bean 定义 reader.loadBeanDefinitions(new ClassPathResource("my-beans.groovy")); // 获取MyService MyService myService = factory.getBean(MyService.class); // 打印消息 myService.showMessage();
38
146
184
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-beans/spring-bean-propertiesBeanDefinitionReader/src/main/java/com/xcs/spring/PropertiesBeanDefinitionReaderDemo.java
PropertiesBeanDefinitionReaderDemo
main
class PropertiesBeanDefinitionReaderDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
DefaultListableBeanFactory beanFactory = new DefaultListableBeanFactory(); PropertiesBeanDefinitionReader reader = new PropertiesBeanDefinitionReader(beanFactory); // 从properties文件加载bean定义 reader.loadBeanDefinitions(new ClassPathResource("bean-definitions.properties")); // 获取bean System.out.println("myBean = " + beanFactory.getBean("myBean")); System.out.println("myBean = " + beanFactory.getBean("myBean"));
36
123
159
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-beans/spring-bean-propertiesBeanDefinitionReader/src/main/java/com/xcs/spring/bean/MyBean.java
MyBean
toString
class MyBean { private String message; public String getMessage() { return message; } public void setMessage(String message) { this.message = message; } @Override public String toString() {<FILL_FUNCTION_BODY>} }
return "MyBean{" + "message='" + message + '\'' + ", hashCode='0x" + Integer.toHexString(System.identityHashCode(this)).toUpperCase() + '\'' + '}';
79
63
142
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-beans/spring-bean-xmlBeanDefinitionReader/src/main/java/com/xcs/spring/XmlBeanDefinitionReaderDemo.java
XmlBeanDefinitionReaderDemo
main
class XmlBeanDefinitionReaderDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建一个DefaultListableBeanFactory作为Spring容器 DefaultListableBeanFactory factory = new DefaultListableBeanFactory(); // 创建XmlBeanDefinitionReader实例用于解析XML配置 XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(factory); // 加载XML配置文件 reader.loadBeanDefinitions(new ClassPathResource("beans.xml")); // 获取并使用Bean MyBean myBean = factory.getBean("myBean", MyBean.class); System.out.println("myBean = " + myBean);
37
143
180
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-beans/spring-bean-xmlBeanDefinitionReader/src/main/java/com/xcs/spring/bean/MyBean.java
MyBean
toString
class MyBean { private String message; public String getMessage() { return message; } public void setMessage(String message) { this.message = message; } @Override public String toString() {<FILL_FUNCTION_BODY>} }
return "MyBean{" + "message='" + message + '\'' + '}';
79
28
107
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-context/spring-context-annotationConfigApplicationContext/src/main/java/com/xcs/spring/AnnotationConfigApplicationContextDemo.java
AnnotationConfigApplicationContextDemo
main
class AnnotationConfigApplicationContextDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(); // 注册Bean context.register(MyBean.class); // 扫描包 context.scan("com.xcs.spring"); // 打印Bean定义 for (String beanDefinitionName : context.getBeanDefinitionNames()) { System.out.println("beanDefinitionName = " + beanDefinitionName); }
37
103
140
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-context/spring-context-classPathXmlApplicationContext/src/main/java/com/xcs/spring/ClassPathXmlApplicationContextDemo.java
ClassPathXmlApplicationContextDemo
main
class ClassPathXmlApplicationContextDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("classpath:beans.xml"); System.out.println("MyBean = " + context.getBean(MyBean.class));
37
49
86
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-core/spring-core-destroyBean/src/main/java/com/xcs/spring/DestroyBeanApplication.java
DestroyBeanApplication
main
class DestroyBeanApplication { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建一个基于注解的应用程序上下文对象 AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(); // 注册配置类 MyBean,告诉 Spring 在容器中管理这个配置类所定义的 bean context.register(MyBean.class); // 刷新应用程序上下文,初始化并启动 Spring 容器 context.refresh(); // 关闭应用程序上下文,销毁 Spring 容器并释放资源 context.close();
34
124
158
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-core/spring-core-getBean/src/main/java/com/xcs/spring/GetBeanApplication.java
GetBeanApplication
main
class GetBeanApplication { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(MyConfiguration.class); System.out.println("myServiceA = " + context.getBean("myServiceA")); System.out.println("myServiceB = " + context.getBean("myServiceB"));
33
70
103
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-core/spring-core-registerBeanDefinition/src/main/java/com/xcs/spring/RegisterBeanDefinitionApplication.java
RegisterBeanDefinitionApplication
main
class RegisterBeanDefinitionApplication { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(); // 注册Bean context.register(MyBean.class); // 扫描包 context.scan("com.xcs.spring"); // 打印Bean定义 for (String beanDefinitionName : context.getBeanDefinitionNames()) { System.out.println("beanDefinitionName = " + beanDefinitionName); }
34
103
137
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-core/spring-core-resolveDependency/src/main/java/com/xcs/spring/ResolveDependencyApplication.java
ResolveDependencyApplication
methodResolveDependency
class ResolveDependencyApplication { public static void main(String[] args) { AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(MyConfiguration.class); // 获得Bean工厂 ConfigurableListableBeanFactory beanFactory = context.getBeanFactory(); // 被注入对象 MyServiceB injectTarget = new MyServiceB(); System.out.println("Before MyServiceB = " + injectTarget + "\n"); methodResolveDependency(beanFactory, injectTarget, "setMethodMyServiceA"); fieldResolveDependency(beanFactory, injectTarget, "fieldMyServiceA"); fieldResolveDependency(beanFactory, injectTarget, "myPropertyValue"); System.out.println("After MyServiceB = " + injectTarget + "\n"); } /** * 解析方法依赖 * * @param beanFactory * @param injectTarget */ public static void methodResolveDependency(ConfigurableListableBeanFactory beanFactory, Object injectTarget, String name) {<FILL_FUNCTION_BODY>} /** * 解析字段依赖 * * @param beanFactory * @param injectTarget */ public static void fieldResolveDependency(ConfigurableListableBeanFactory beanFactory, Object injectTarget, String name) { try { // 1. 获取MyServiceB类中名为fieldMyServiceA的字段的引用 Field field = injectTarget.getClass().getDeclaredField(name); // 2. 创建一个描述此字段的DependencyDescriptor DependencyDescriptor desc = new DependencyDescriptor(field, true); // 3. 使用BeanFactory来解析这个字段的依赖 Object value = beanFactory.resolveDependency(desc, null); System.out.println("解析字段依赖结果:"); System.out.println("---------------------------------------------"); System.out.println(String.format("Name: %s.%s", field.getDeclaringClass().getName(), field.getName())); System.out.println(String.format("Value: %s", value)); System.out.println("---------------------------------------------\n"); // 4. 使字段可访问(特别是如果它是private的) ReflectionUtils.makeAccessible(field); // 5. 使用反射设置这个字段的值,将解析得到的依赖注入到目标对象中 field.set(injectTarget, value); } catch (Exception e) { e.printStackTrace(); } } }
try { // 1. 获取MyServiceB类中名为setMyServiceA的方法的引用 Method method = injectTarget.getClass().getMethod(name, MyServiceA.class); // 2. 创建一个描述此方法参数的DependencyDescriptor DependencyDescriptor desc = new DependencyDescriptor(new MethodParameter(method, 0), true); // 3. 使用BeanFactory来解析这个方法参数的依赖 Object value = beanFactory.resolveDependency(desc, null); System.out.println("解析方法依赖结果:"); System.out.println("---------------------------------------------"); System.out.println(String.format("Name: %s.%s",method.getDeclaringClass().getName(),method.getName())); System.out.println(String.format("Value: %s", value)); System.out.println("---------------------------------------------\n"); // 4. 使方法可访问(特别是如果它是private的) ReflectionUtils.makeAccessible(method); // 5. 使用反射调用这个方法,将解析得到的依赖注入到目标对象中 method.invoke(injectTarget, value); } catch (Exception e) { e.printStackTrace(); }
643
321
964
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-core/spring-core-resolveDependency/src/main/java/com/xcs/spring/service/MyServiceB.java
MyServiceB
toString
class MyServiceB { /** * 方法注入 */ private MyServiceA methodMyServiceA; /** * 字段注入 */ private MyServiceA fieldMyServiceA; /** * 字段注入 (环境变量) */ @Value("${my.property.value}") private String myPropertyValue; public void setMethodMyServiceA(MyServiceA methodMyServiceA){ this.methodMyServiceA = methodMyServiceA; } @Override public String toString() {<FILL_FUNCTION_BODY>} }
return "MyServiceB{" + "myPropertyValue='" + myPropertyValue + '\'' + ", methodMyServiceA=" + methodMyServiceA + ", fieldMyServiceA=" + fieldMyServiceA + '}';
162
63
225
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-dataops/spring-dataops-conditionalConverter/src/main/java/com/xcs/spring/ConditionalConverterDemo.java
ConditionalConverterDemo
main
class ConditionalConverterDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建自定义的转换器实例 StringToIntegerConditionalConverter converter = new StringToIntegerConditionalConverter(); // 定义源类型(String)和目标类型(Integer)的描述符 TypeDescriptor sourceType = TypeDescriptor.valueOf(String.class); TypeDescriptor targetType = TypeDescriptor.valueOf(Integer.class); // 测试转换器是否适用于从 String 到 Integer 的转换 if (converter.matches(sourceType, targetType)) { // 如果转换条件匹配,则执行转换 Integer result = converter.convert("8"); System.out.println("Converted result: " + result); } else { // 如果条件不匹配,打印不适用的消息 System.out.println("Conversion not applicable."); }
35
212
247
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-dataops/spring-dataops-conditionalConverter/src/main/java/com/xcs/spring/converter/StringToIntegerConditionalConverter.java
StringToIntegerConditionalConverter
convert
class StringToIntegerConditionalConverter implements Converter<String, Integer>, ConditionalConverter { @Override public boolean matches(TypeDescriptor sourceType, TypeDescriptor targetType) { // 判断条件:当源类型是 String 且目标类型是 Integer 时返回 true return String.class.equals(sourceType.getType()) && Integer.class.equals(targetType.getType()); } @Override public Integer convert(String source) {<FILL_FUNCTION_BODY>} }
if (source == null || source.isEmpty()) { return null; } try { return Integer.parseInt(source); } catch (NumberFormatException e) { throw new IllegalArgumentException("Unable to convert String to Integer: " + source, e); }
127
73
200
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-dataops/spring-dataops-conversionService/src/main/java/com/xcs/spring/ConversionServiceDemo.java
ConversionServiceDemo
main
class ConversionServiceDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建 DefaultConversionService 实例 ConversionService conversionService = new DefaultConversionService(); // 使用 canConvert 检查转换是否可能 if (conversionService.canConvert(Integer.class, String.class)) { System.out.println("Can convert from Integer to String"); // 执行转换操作,将 Integer 转换为 String String converted = conversionService.convert(666, String.class); System.out.println("Converted: " + converted); } // 使用 TypeDescriptor 检查转换是否可能 if (conversionService.canConvert( TypeDescriptor.valueOf(Integer.class), TypeDescriptor.valueOf(String.class))) { System.out.println("Can convert from Integer to String using TypeDescriptors"); // 使用 TypeDescriptor 执行转换 Object convertedWithTypeDescriptor = conversionService.convert( 888, TypeDescriptor.valueOf(Integer.class), TypeDescriptor.valueOf(String.class)); System.out.println("Converted with TypeDescriptors: " + convertedWithTypeDescriptor); }
35
282
317
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-dataops/spring-dataops-converter/src/main/java/com/xcs/spring/ConverterDemo.java
ConverterDemo
main
class ConverterDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建一个默认的转换服务 DefaultConversionService service = new DefaultConversionService(); // 向服务中添加自定义的转换器 service.addConverter(new StringToLocalDateConverter()); service.addConverter(new StringToBooleanConverter()); // 检查是否可以将字符串转换为 LocalDate if (service.canConvert(String.class, LocalDate.class)) { LocalDate localDate = service.convert("2023-12-07", LocalDate.class); System.out.println("LocalDate = " + localDate); } // 检查是否可以将字符串 "yes" 转换为 Boolean if (service.canConvert(String.class, Boolean.class)) { Boolean boolValue = service.convert("yes", Boolean.class); System.out.println("yes = " + boolValue); } // 检查是否可以将字符串 "no" 转换为 Boolean if (service.canConvert(String.class, Boolean.class)) { Boolean boolValue = service.convert("no", Boolean.class); System.out.println("no = " + boolValue); }
34
298
332
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-dataops/spring-dataops-converter/src/main/java/com/xcs/spring/converter/StringToBooleanConverter.java
StringToBooleanConverter
convert
class StringToBooleanConverter implements Converter<String, Boolean> { private static final Set<String> trueValues = new HashSet<>(8); private static final Set<String> falseValues = new HashSet<>(8); static { trueValues.add("true"); trueValues.add("on"); trueValues.add("yes"); trueValues.add("1"); falseValues.add("false"); falseValues.add("off"); falseValues.add("no"); falseValues.add("0"); } @Override @Nullable public Boolean convert(String source) {<FILL_FUNCTION_BODY>} }
if (trueValues.contains(source)) { return Boolean.TRUE; } if (falseValues.contains(source)) { return Boolean.FALSE; } throw new IllegalArgumentException("Invalid boolean value '" + source + "'");
169
63
232
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-dataops/spring-dataops-converterFactory/src/main/java/com/xcs/spring/CharacterToNumberFactoryDemo.java
CharacterToNumberFactoryDemo
main
class CharacterToNumberFactoryDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建一个默认的转换服务 // 这里使用 GenericConversionService,它是一个通用的类型转换服务 GenericConversionService conversionService = new DefaultConversionService(); // 向转换服务中添加一个字符串到数字的转换器工厂 // StringToNumberConverterFactory 是一个工厂类,用于创建字符串到数字的转换器 conversionService.addConverterFactory(new StringToNumberConverterFactory()); // 使用转换服务将字符串 "8" 转换为 Integer 类型 // 这里演示了如何将字符串转换为对应的整数 Integer num = conversionService.convert("8", Integer.class); // 输出转换结果 System.out.println("String to Integer: " + num);
39
213
252
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-dataops/spring-dataops-genericConverter/src/main/java/com/xcs/spring/GenericConverterDemo.java
GenericConverterDemo
main
class GenericConverterDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建一个默认的转换服务 DefaultConversionService service = new DefaultConversionService(); // 向转换服务中添加自定义的转换器 service.addConverter(new AnnotatedStringToDateConverter()); // 定义源类型和目标类型,准备将 String 转换为 Date TypeDescriptor sourceType1 = TypeDescriptor.valueOf(String.class); TypeDescriptor targetType1 = new TypeDescriptor(ReflectionUtils.findField(MyBean.class, "date")); // 执行转换操作 Date date = (Date) service.convert("2023-01-01", sourceType1, targetType1); // 定义另一组源类型和目标类型,准备将另一个 String 格式转换为 Date TypeDescriptor sourceType2 = TypeDescriptor.valueOf(String.class); TypeDescriptor targetType2 = new TypeDescriptor(ReflectionUtils.findField(MyBean.class, "dateTime")); // 执行转换操作 Date dateTime = (Date) service.convert("2023-01-01 23:59:59", sourceType2, targetType2); // 使用转换得到的日期对象设置 MyBean 实例的属性 MyBean myBean = new MyBean(); myBean.setDate(date); myBean.setDateTime(dateTime); // 输出转换结果 System.out.println("myBean = " + myBean);
38
392
430
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-dataops/spring-dataops-genericConverter/src/main/java/com/xcs/spring/bean/MyBean.java
MyBean
toString
class MyBean { @DateFormat("yyyy-MM-dd") private Date date; @DateFormat("yyyy-MM-dd hh:mm:ss") private Date dateTime; public Date getDate() { return date; } public void setDate(Date date) { this.date = date; } public Date getDateTime() { return dateTime; } public void setDateTime(Date dateTime) { this.dateTime = dateTime; } @Override public String toString() {<FILL_FUNCTION_BODY>} }
return "MyBean{" + "date=" + date + ", dateTime=" + dateTime + '}';
189
41
230
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-dataops/spring-dataops-genericConverter/src/main/java/com/xcs/spring/convert/AnnotatedStringToDateConverter.java
AnnotatedStringToDateConverter
convert
class AnnotatedStringToDateConverter implements GenericConverter { @Override public Set<ConvertiblePair> getConvertibleTypes() { // 定义可转换的类型对:从 String 到 Date return Collections.singleton(new ConvertiblePair(String.class, Date.class)); } @Override public Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {<FILL_FUNCTION_BODY>} }
// 如果源对象为空,直接返回 null if (source == null) { return null; } // 将源对象转换为字符串 String dateString = (String) source; // 获取目标类型(Date类型字段)上的 DateFormat 注解 DateFormat dateFormatAnnotation = targetType.getAnnotation(DateFormat.class); // 如果目标字段上没有 DateFormat 注解,则抛出异常 if (dateFormatAnnotation == null) { throw new IllegalArgumentException("目标字段上缺少DateFormat注解"); } try { // 根据注解中提供的日期格式创建 SimpleDateFormat SimpleDateFormat dateFormat = new SimpleDateFormat(dateFormatAnnotation.value()); // 使用 SimpleDateFormat 将字符串解析为日期对象 return dateFormat.parse(dateString); } catch (Exception e) { // 如果解析失败,抛出异常 throw new IllegalArgumentException("无法解析日期", e); }
127
286
413
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-dataops/spring-dataops-parser/src/main/java/com/xcs/spring/ParserDemo.java
ParserDemo
main
class ParserDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建一个格式化转换服务 FormattingConversionService conversionService = new FormattingConversionService(); // 向转换服务中添加一个货币解析器 conversionService.addParser(new CurrencyParser()); // 设置当前线程的区域设置为美国 LocaleContextHolder.setLocale(Locale.US); // 将美元格式的字符串转换为数值类型 Number formattedAmountForUS = conversionService.convert("$1,234.56", Number.class); System.out.println("Parsed Currency (US): " + formattedAmountForUS); // 改变区域设置为中国 LocaleContextHolder.setLocale(Locale.CHINA); // 将人民币格式的字符串转换为数值类型 Number formattedAmountForCHINA = conversionService.convert("¥1,234.56", Number.class); System.out.println("Parsed Currency (CHINA): " + formattedAmountForCHINA);
37
276
313
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-dataops/spring-dataops-parser/src/main/java/com/xcs/spring/parser/CurrencyParser.java
CurrencyParser
parse
class CurrencyParser implements Parser<Number> { @Override public Number parse(String text, Locale locale) throws ParseException {<FILL_FUNCTION_BODY>} }
// 创建适用于特定区域的货币格式化器 NumberFormat format = NumberFormat.getCurrencyInstance(locale); // 解析字符串为数字 return format.parse(text);
51
60
111
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-dataops/spring-dataops-printer/src/main/java/com/xcs/spring/PrinterDemo.java
PrinterDemo
main
class PrinterDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建一个 FormattingConversionService 实例 FormattingConversionService conversionService = new FormattingConversionService(); // 将自定义的 CurrencyPrinter 注册到 conversionService conversionService.addPrinter(new CurrencyPrinter()); // 设置货币金额 double amount = 1234.56; // 设置当前线程的 Locale 为美国 LocaleContextHolder.setLocale(Locale.US); // 使用 conversionService 将金额转换为字符串,并应用美国的货币格式 String formattedAmountForUS = conversionService.convert(amount, String.class); System.out.println("Formatted Currency (US): " + formattedAmountForUS); // 设置当前线程的 Locale 为中国 LocaleContextHolder.setLocale(Locale.CHINA); // 使用 conversionService 将金额转换为字符串,并应用中国的货币格式 String formattedAmountForCHINA = conversionService.convert(amount, String.class); System.out.println("Formatted Currency (CHINA): " + formattedAmountForCHINA);
37
307
344
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-dataops/spring-dataops-propertyEditor/src/main/java/com/xcs/spring/PropertyEditorDemo.java
PropertyEditorDemo
main
class PropertyEditorDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建一个 BeanWrapperImpl 实例,用于操作 MyBean 类。 BeanWrapperImpl beanWrapper = new BeanWrapperImpl(MyBean.class); // 为 Date 类型的属性注册自定义的属性编辑器 MyCustomDateEditor。 beanWrapper.overrideDefaultEditor(Date.class, new MyCustomDateEditor()); // 设置 MyBean 类中名为 "date" 的属性值,使用字符串 "2023-12-5"。 // 这里会使用注册的 MyCustomDateEditor 来将字符串转换为 Date 对象。 beanWrapper.setPropertyValue("date", "2023-12-5"); // 设置 MyBean 类中名为 "path" 的属性值,使用字符串 "/opt/spring-reading"。 // 因为没有为 Path 类型注册特定的编辑器,所以使用默认转换逻辑。 beanWrapper.setPropertyValue("path", "/opt/spring-reading"); // 输出最终包装的 MyBean 实例。 System.out.println("MyBean = " + beanWrapper.getWrappedInstance());
37
305
342
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-dataops/spring-dataops-propertyEditor/src/main/java/com/xcs/spring/bean/MyBean.java
MyBean
toString
class MyBean { private Path path; private Date date; public Path getPath() { return path; } public void setPath(Path path) { this.path = path; } public Date getDate() { return date; } public void setDate(Date date) { this.date = date; } @Override public String toString() {<FILL_FUNCTION_BODY>} }
return "MyBean{" + "path=" + path + ", date=" + date + '}';
150
39
189
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-dataops/spring-dataops-validator/src/main/java/com/xcs/spring/PersonValidator.java
PersonValidator
validate
class PersonValidator implements Validator { @Override public boolean supports(Class clazz) { return Person.class.equals(clazz); } @Override public void validate(Object obj, Errors e) {<FILL_FUNCTION_BODY>} }
// 检查名称是否为空 ValidationUtils.rejectIfEmpty(e, "name", "name.empty", "姓名不能为空"); // 将对象转换为 Person 类型 Person p = (Person) obj; // 检查年龄是否为负数 if (p.getAge() < 0) { e.rejectValue("age", "negative.value", "年龄不能为负数"); } // 检查年龄是否超过 120 岁 else if (p.getAge() > 120) { e.rejectValue("age", "too.darn.old", "目前年龄最大的是120岁"); }
72
176
248
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-dataops/spring-dataops-validator/src/main/java/com/xcs/spring/ValidatorDemo.java
ValidatorDemo
main
class ValidatorDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建一个 Person 对象实例 Person person = new Person(); person.setName(null); person.setAge(130); // 创建一个 BeanPropertyBindingResult 对象,用于存储验证过程中的错误 BeanPropertyBindingResult result = new BeanPropertyBindingResult(person, "person"); // 创建一个 PersonValidator 实例,这是自定义的验证器 PersonValidator validator = new PersonValidator(); // 检查 PersonValidator 是否支持 Person 类的验证 if (validator.supports(person.getClass())) { // 执行验证逻辑 validator.validate(person, result); } // 检查是否存在验证错误,并打印出所有的字段错误 if (result.hasErrors()) { for (FieldError error : result.getFieldErrors()) { System.out.println(error.getField() + ":" + error.getDefaultMessage()); } }
34
247
281
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-env/spring-env-configurableEnvironment/src/main/java/com/xcs/spring/ConfigurableEnvironmentDemo.java
ConfigurableEnvironmentDemo
main
class ConfigurableEnvironmentDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建 StandardEnvironment 实例,用于访问属性和配置文件信息 ConfigurableEnvironment environment = new StandardEnvironment(); // 设置配置文件 environment.setActiveProfiles("dev"); System.out.println("Active Profiles: " + String.join(", ", environment.getActiveProfiles())); // 添加配置文件 environment.addActiveProfile("test"); System.out.println("Updated Active Profiles: " + String.join(", ", environment.getActiveProfiles())); // 设置默认配置文件 environment.setDefaultProfiles("default"); System.out.println("Default Profiles: " + String.join(", ", environment.getDefaultProfiles())); // 获取系统属性 Map<String, Object> systemProperties = environment.getSystemProperties(); System.out.println("System Properties: " + systemProperties); // 获取系统环境变量 Map<String, Object> systemEnvironment = environment.getSystemEnvironment(); System.out.println("System Environment: " + systemEnvironment); // 合并环境变量 Map<String, Object> properties = new HashMap<>(); properties.put("app.name", "Spring-Reading"); properties.put("app.version", "1.0.0"); StandardEnvironment standardEnvironment = new StandardEnvironment(); standardEnvironment.getPropertySources().addFirst(new MapPropertySource("myEnvironment", properties)); environment.merge(standardEnvironment); // 获取可变属性源 MutablePropertySources propertySources = environment.getPropertySources(); System.out.println("MutablePropertySources: " + propertySources);
35
408
443
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-env/spring-env-configurablePropertyResolver/src/main/java/com/xcs/spring/ConfigurablePropertyResolverDemo.java
ConfigurablePropertyResolverDemo
main
class ConfigurablePropertyResolverDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建属性源 Map<String, Object> properties = new HashMap<>(); properties.put("app.name", "Spring-Reading"); properties.put("app.version", "1.0.0"); MapPropertySource propertySource = new MapPropertySource("myPropertySource", properties); MutablePropertySources propertySources = new MutablePropertySources(); propertySources.addLast(propertySource); // 创建 ConfigurablePropertyResolver PropertySourcesPropertyResolver propertyResolver = new PropertySourcesPropertyResolver(propertySources); // 设置和获取转换服务 ConfigurableConversionService conversionService = new DefaultConversionService(); propertyResolver.setConversionService(conversionService); // 设置占位符前后缀 propertyResolver.setPlaceholderPrefix("${"); propertyResolver.setPlaceholderSuffix("}"); // 设置默认值分隔符 propertyResolver.setValueSeparator(":"); // 设置未解析占位符的处理方式 propertyResolver.setIgnoreUnresolvableNestedPlaceholders(true); // 设置并验证必需的属性 propertyResolver.setRequiredProperties("app.name", "app.version"); propertyResolver.validateRequiredProperties(); // 读取属性 String appName = propertyResolver.getProperty("app.name"); String appVersion = propertyResolver.getProperty("app.version", String.class, "Unknown Version"); System.out.println("获取属性 app.name: " + appName); System.out.println("获取属性 app.version: " + appVersion);
36
407
443
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-env/spring-env-environment/src/main/java/com/xcs/spring/EnvironmentDemo.java
EnvironmentDemo
main
class EnvironmentDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 设置系统属性以模拟 Spring 的配置文件功能 System.setProperty("spring.profiles.default", "dev"); System.setProperty("spring.profiles.active", "test"); // 创建 StandardEnvironment 实例,用于访问属性和配置文件信息 Environment environment = new StandardEnvironment(); // 使用 getProperty 方法获取系统属性。这里获取了 Java 版本 String javaVersion = environment.getProperty("java.version"); System.out.println("java.version: " + javaVersion); // 获取当前激活的配置文件(profiles) String[] activeProfiles = environment.getActiveProfiles(); System.out.println("activeProfiles = " + String.join(",", activeProfiles)); // 获取默认配置文件(当没有激活的配置文件时使用) String[] defaultProfiles = environment.getDefaultProfiles(); System.out.println("defaultProfiles = " + String.join(",", defaultProfiles)); // 检查是否激活了指定的配置文件。这里检查的是 'test' 配置文件 boolean isDevProfileActive = environment.acceptsProfiles("test"); System.out.println("acceptsProfiles('test'): " + isDevProfileActive);
33
319
352
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-env/spring-env-propertyResolver/src/main/java/com/xcs/spring/SimplePropertyResolverDemo.java
SimplePropertyResolverDemo
main
class SimplePropertyResolverDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建属性源 Map<String, Object> properties = new HashMap<>(); properties.put("app.name", "Spring-Reading"); properties.put("app.version", "1.0.0"); properties.put("app.description", "This is a ${app.name} with version ${app.version}"); MapPropertySource propertySource = new MapPropertySource("myPropertySource", properties); MutablePropertySources propertySources = new MutablePropertySources(); propertySources.addLast(propertySource); // 使用 PropertySourcesPropertyResolver PropertyResolver propertyResolver = new PropertySourcesPropertyResolver(propertySources); // 获取属性 String appName = propertyResolver.getProperty("app.name"); String appVersion = propertyResolver.getProperty("app.version"); System.out.println("获取属性 app.name: " + appName); System.out.println("获取属性 app.version: " + appVersion); // 检查属性是否存在 boolean containsDescription = propertyResolver.containsProperty("app.description"); boolean containsReleaseDate = propertyResolver.containsProperty("app.releaseDate"); System.out.println("是否包含 'app.description' 属性: " + containsDescription); System.out.println("是否包含 'app.releaseDate' 属性: " + containsReleaseDate); // 带默认值的属性获取 String appReleaseDate = propertyResolver.getProperty("app.releaseDate", "2023-11-30"); System.out.println("带默认值的属性获取 app.releaseDate : " + appReleaseDate); // 获取必需属性 String requiredAppName = propertyResolver.getRequiredProperty("app.name"); System.out.println("获取必需属性 app.name: " + requiredAppName); // 解析占位符 String appDescription = propertyResolver.resolvePlaceholders(properties.get("app.description").toString()); System.out.println("解析占位符 app.description: " + appDescription); // 解析必需的占位符 String requiredAppDescription = propertyResolver.resolveRequiredPlaceholders("App Description: ${app.description}"); System.out.println("解析必需的占位符 : " + requiredAppDescription);
35
578
613
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-env/spring-env-propertySource/src/main/java/com/xcs/spring/PropertySourceDemo.java
PropertySourceDemo
main
class PropertySourceDemo { public static void main(String[] args) throws Exception {<FILL_FUNCTION_BODY>} }
// 从 .properties 文件加载属性 Properties source = PropertiesLoaderUtils.loadProperties(new ClassPathResource("application.properties")); PropertySource propertySource = new PropertiesPropertySource("properties", source); // 直接从Resource加载属性 ClassPathResource classPathResource = new ClassPathResource("application.properties"); PropertySource resourcePropertySource = new ResourcePropertySource("resource", classPathResource); // 从Map加载属性 Map<String, Object> map = new HashMap<>(); map.put("app.name", "Spring-Reading"); map.put("app.version", "1.0.0"); PropertySource mapPropertySource = new MapPropertySource("mapSource", map); // 访问系统环境变量 Map mapEnv = System.getenv(); PropertySource envPropertySource = new SystemEnvironmentPropertySource("systemEnv", mapEnv); // 解析命令行参数 String[] myArgs = {"--appName=MyApplication", "--port=8080"}; PropertySource commandLinePropertySource = new SimpleCommandLinePropertySource(myArgs); // 组合多个 PropertySource 实例 CompositePropertySource composite = new CompositePropertySource("composite"); composite.addPropertySource(propertySource); composite.addPropertySource(resourcePropertySource); composite.addPropertySource(mapPropertySource); composite.addPropertySource(envPropertySource); composite.addPropertySource(commandLinePropertySource); // 打印结果 for (PropertySource<?> ps : composite.getPropertySources()) { System.out.printf("Name: %-15s || Source: %s%n", ps.getName(), ps.getSource()); }
36
427
463
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-env/spring-env-propertySources/src/main/java/com/xcs/spring/PropertySourcesDemo.java
PropertySourcesDemo
main
class PropertySourcesDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建 MutablePropertySources 对象 MutablePropertySources propertySources = new MutablePropertySources(); // 创建两个 MapPropertySource 对象 Map<String, Object> config1 = new HashMap<>(); config1.put("key1", "value1"); PropertySource<?> mapPropertySource1 = new MapPropertySource("config1", config1); Map<String, Object> config2 = new HashMap<>(); config2.put("key2", "value2"); PropertySource<?> mapPropertySource2 = new MapPropertySource("config2", config2); // 添加属性源到开头 propertySources.addFirst(mapPropertySource1); // 添加属性源到末尾 propertySources.addLast(mapPropertySource2); // 打印 System.out.println("打印属性源"); for (PropertySource<?> ps : propertySources) { System.out.printf("Name: %-10s || Source: %s%n", ps.getName(), ps.getSource()); } System.out.println(); // 替换属性源 Map<String, Object> newConfig = new HashMap<>(); newConfig.put("app.name", "Spring-Reading"); newConfig.put("app.version", "1.0.0"); PropertySource<?> newMapPropertySource = new MapPropertySource("config1", newConfig); propertySources.replace("config1", newMapPropertySource); // 打印替换后 System.out.println("打印替换后的属性源"); for (PropertySource<?> ps : propertySources) { System.out.printf("Name: %-10s || Source: %s%n", ps.getName(), ps.getSource()); } System.out.println(); // 检查是否包含属性源 System.out.println("检查是否包含属性源 config2: " + propertySources.contains("config2")); // 移除属性源 System.out.println("移除属性源 config2: " + propertySources.remove("config2")); // 再次检查是否包含属性源 System.out.println("删除后是否包含属性源 config2: " + propertySources.contains("config2"));
35
587
622
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-factory/spring-factory-autowireCapableBeanFactory/src/main/java/com/xcs/spring/AutowireCapableBeanFactoryDemo.java
AutowireCapableBeanFactoryDemo
configureBean
class AutowireCapableBeanFactoryDemo { public static void main(String[] args) { // 创建 ApplicationContext AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(MyConfiguration.class); // 配置一个后置处理器,用于验证Bean的初始化前后拦截信息打印 applicationContext.getBeanFactory().addBeanPostProcessor(new MyBeanPostProcessor()); // 注册一个MyRepository的Bean对象 applicationContext.getBeanFactory().registerSingleton("myRepository", new MyRepository()); // 获取 AutowireCapableBeanFactory AutowireCapableBeanFactory beanFactory = applicationContext.getAutowireCapableBeanFactory(); // 创建指定Bean名称的实例 // createBean(beanFactory); // 对给定的Bean实例进行进一步的配置 // configureBean(beanFactory); // 对给定的Bean实例进行自动装配 // autowireBean(beanFactory); // 使用指定的自动装配模式创建Bean实例 // autowire(beanFactory); // 对给定的Bean实例的属性进行自动装配 // autowireBeanProperties(beanFactory); // 将属性值应用到给定的Bean实例 // applyBeanPropertyValues(beanFactory); // 初始化给定的Bean实例 // initializeBean(beanFactory); // 销毁给定的Bean实例 // destroyBean(beanFactory); // 解析Bean之间的依赖关系 // resolveDependency(beanFactory); } private static void createBean(AutowireCapableBeanFactory beanFactory) { MyService myService = beanFactory.createBean(MyService.class); System.out.println("调用createBean方法,创建Bean对象 = " + myService); } private static void configureBean(AutowireCapableBeanFactory beanFactory) {<FILL_FUNCTION_BODY>} private static void autowireBean(AutowireCapableBeanFactory beanFactory) { MyService myService = new MyService(); System.out.println("调用autowireBean前,MyService = " + myService); beanFactory.autowireBean(myService); System.out.println("调用autowireBean后,MyService = " + myService); } private static void autowire(AutowireCapableBeanFactory beanFactory) { Object myService = beanFactory.autowire(MyService.class, AutowireCapableBeanFactory.AUTOWIRE_BY_TYPE, false); System.out.println("调用autowire方法,创建Bean对象 =" + myService); } private static void autowireBeanProperties(AutowireCapableBeanFactory beanFactory) { MyService myService = new MyService(); System.out.println("调用autowireBeanProperties前,MyService = " + myService); beanFactory.autowireBeanProperties(myService, AutowireCapableBeanFactory.AUTOWIRE_BY_TYPE, false); System.out.println("调用autowireBeanProperties后,MyService = " + myService); } private static void applyBeanPropertyValues(AutowireCapableBeanFactory beanFactory) { PropertyValue propertyValue = new PropertyValue("javaHome", "这里是我自定义的javaHome路径配置"); MutablePropertyValues propertyValues = new MutablePropertyValues(); propertyValues.addPropertyValue(propertyValue); RootBeanDefinition rootBeanDefinition = new RootBeanDefinition(MyService.class); rootBeanDefinition.setPropertyValues(propertyValues); // 配置一个RootBeanDefinition ((DefaultListableBeanFactory) beanFactory).registerBeanDefinition("myService", rootBeanDefinition); MyService myService = new MyService(); System.out.println("调用applyBeanPropertyValues前,MyService = " + myService); beanFactory.applyBeanPropertyValues(myService, "myService"); System.out.println("调用applyBeanPropertyValues后,MyService = " + myService); } private static void initializeBean(AutowireCapableBeanFactory beanFactory) { MyService myService = new MyService(); System.out.println("调用initializeBean前,MyService = " + myService); beanFactory.initializeBean(myService, "myService"); System.out.println("调用initializeBean前,MyService = " + myService); } private static void destroyBean(AutowireCapableBeanFactory beanFactory) { beanFactory.destroyBean(new MyService()); } private static void resolveDependency(AutowireCapableBeanFactory beanFactory) { try { DependencyDescriptor dependencyDescriptor = new DependencyDescriptor(MyService.class.getDeclaredField("myRepository"), false); Object resolveDependency = beanFactory.resolveDependency(dependencyDescriptor, "myRepository"); System.out.println("resolveDependency = " + resolveDependency); } catch (NoSuchFieldException e) { e.printStackTrace(); } } }
// 配置一个RootBeanDefinition ((DefaultListableBeanFactory) beanFactory).registerBeanDefinition("myService", new RootBeanDefinition(MyService.class)); MyService myService = new MyService(); System.out.println("调用configureBean前,MyService = " + myService); beanFactory.configureBean(myService, "myService"); System.out.println("调用configureBean后,MyService = " + myService);
1,262
112
1,374
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-factory/spring-factory-autowireCapableBeanFactory/src/main/java/com/xcs/spring/service/MyService.java
MyService
toString
class MyService implements BeanNameAware, InitializingBean, DisposableBean { @Autowired private MyRepository myRepository; @Value("${java.home}") private String javaHome; @Override public void setBeanName(String name) { System.out.println("MyService.setBeanName方法被调用了"); } @Override public void afterPropertiesSet() throws Exception { System.out.println("MyService.afterPropertiesSet方法被调用了"); } @Override public void destroy() throws Exception { System.out.println("MyService.destroy方法被调用了"); } public void setJavaHome(String javaHome) { this.javaHome = javaHome; } @Override public String toString() {<FILL_FUNCTION_BODY>} }
return "MyService{" + "myRepository=" + myRepository + ", javaHome='" + javaHome + '\'' + '}';
220
41
261
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-factory/spring-factory-beanFactory/src/main/java/com/xcs/spring/BeanFactoryDemo.java
BeanFactoryDemo
main
class BeanFactoryDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建 BeanFactory BeanFactory beanFactory = new AnnotationConfigApplicationContext(MyBean.class).getBeanFactory(); // 根据名称获取 bean Object bean = beanFactory.getBean("myBean"); System.out.println("通过名称获取Bean: " + bean); // 获取 bean 的 ObjectProvider ObjectProvider<MyBean> objectProvider = beanFactory.getBeanProvider(MyBean.class); System.out.println("获取Bean的ObjectProvider: " + objectProvider); // 获取 bean 的类型 Class<?> beanType = beanFactory.getType("myBean"); System.out.println("获取Bean的类型: " + beanType); // 判断是否包含某个 bean boolean containsBean = beanFactory.containsBean("myBean"); System.out.println("判断是否包含Bean: " + containsBean); // 判断 bean 是否为单例 boolean isSingleton = beanFactory.isSingleton("myBean"); System.out.println("判断是否为单例: " + isSingleton); // 判断 bean 是否为原型 boolean isPrototype = beanFactory.isPrototype("myBean"); System.out.println("判断是否为原型: " + isPrototype); // 判断 bean 是否匹配指定类型 boolean isTypeMatch = beanFactory.isTypeMatch("myBean", ResolvableType.forClass(MyBean.class)); System.out.println("判断是否匹配指定类型: " + isTypeMatch); // 获取 bean 的所有别名 String[] aliases = beanFactory.getAliases("myBean"); System.out.println("获取Bean的所有别名: " + String.join(", ", aliases));
35
439
474
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-factory/spring-factory-configurableBeanFactory/src/main/java/com/xcs/spring/ConfigurableBeanFactoryDemo.java
ConfigurableBeanFactoryDemo
main
class ConfigurableBeanFactoryDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建 ApplicationContext ConfigurableBeanFactory configurableBeanFactory = new AnnotationConfigApplicationContext(MyConfiguration.class).getBeanFactory(); // 设置父级 BeanFactory configurableBeanFactory.setParentBeanFactory(new DefaultListableBeanFactory()); // 获取BeanPostProcessor数量 int beanPostProcessorCount = configurableBeanFactory.getBeanPostProcessorCount(); System.out.println("获取BeanPostProcessor数量: " + beanPostProcessorCount); // 获取所有已注册的 Scope 名称 String[] scopeNames = configurableBeanFactory.getRegisteredScopeNames(); System.out.println("获取所有已注册的Scope名称: " + String.join(", ", scopeNames)); // 获取注册的 Scope Scope customScope = configurableBeanFactory.getRegisteredScope("customScope"); System.out.println("获取注册的Scope :" + customScope); // 获取ApplicationStartup ApplicationStartup applicationStartup = configurableBeanFactory.getApplicationStartup(); System.out.println("获取ApplicationStartup: " + applicationStartup); // 获取AccessControlContext AccessControlContext accessControlContext = configurableBeanFactory.getAccessControlContext(); System.out.println("获取AccessControlContext: " + accessControlContext); // 拷贝配置 ConfigurableListableBeanFactory otherFactory = new DefaultListableBeanFactory(); configurableBeanFactory.copyConfigurationFrom(otherFactory); System.out.println("拷贝配置copyConfigurationFrom: " + otherFactory); // 注册别名 String beanName = "myService"; String alias = "helloService"; configurableBeanFactory.registerAlias(beanName, alias); System.out.println("注册别名registerAlias, BeanName: " + beanName + "alias: " + alias); // 获取合并后的 BeanDefinition BeanDefinition mergedBeanDefinition = configurableBeanFactory.getMergedBeanDefinition("myService"); System.out.println("获取合并后的 BeanDefinition: " + mergedBeanDefinition); // 判断是否为 FactoryBean String factoryBeanName = "myService"; boolean isFactoryBean = configurableBeanFactory.isFactoryBean(factoryBeanName); System.out.println("判断是否为FactoryBean" + isFactoryBean); // 设置当前 Bean 是否正在创建 String currentBeanName = "myService"; boolean inCreation = true; configurableBeanFactory.setCurrentlyInCreation(currentBeanName, inCreation); System.out.println("设置当前Bean是否正在创建: " + currentBeanName); // 判断指定的 Bean 是否正在创建 boolean isCurrentlyInCreation = configurableBeanFactory.isCurrentlyInCreation(currentBeanName); System.out.println("判断指定的Bean是否正在创建" + isCurrentlyInCreation); // 注册依赖关系 String dependentBeanName = "dependentBean"; configurableBeanFactory.registerDependentBean(beanName, dependentBeanName); System.out.println("注册依赖关系" + "beanName: " + beanName + "dependentBeanName: " + dependentBeanName); // 获取所有依赖于指定 Bean 的 Bean 名称 String[] dependentBeans = configurableBeanFactory.getDependentBeans(beanName); System.out.println("获取所有依赖于指定Bean的Bean名称: " + String.join(", ", dependentBeans)); // 获取指定 Bean 依赖的所有 Bean 名称 String[] dependencies = configurableBeanFactory.getDependenciesForBean(beanName); System.out.println("获取指定Bean依赖的所有Bean名称: " + String.join(", ", dependencies)); // 销毁指定 Bean 实例 Object beanInstance = configurableBeanFactory.getBean(beanName); configurableBeanFactory.destroyBean(beanName, beanInstance); System.out.println("销毁指定 Bean 实例: " + beanName); // 销毁所有单例 Bean configurableBeanFactory.destroySingletons(); System.out.println("销毁所有单例Bean destroySingletons" );
37
1,047
1,084
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-factory/spring-factory-configurableListableBeanFactory/src/main/java/com/xcs/spring/ConfigurableListableBeanFactoryDemo.java
ConfigurableListableBeanFactoryDemo
main
class ConfigurableListableBeanFactoryDemo { public static void main(String[] args) throws NoSuchFieldException {<FILL_FUNCTION_BODY>} }
// 创建 ApplicationContext AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(MyConfiguration.class); // 获取 ConfigurableListableBeanFactory ConfigurableListableBeanFactory beanFactory = applicationContext.getBeanFactory(); // 忽略指定类型的依赖 beanFactory.ignoreDependencyType(String.class); // 忽略指定接口的依赖 beanFactory.ignoreDependencyInterface(BeanFactory.class); // 注册可解析的依赖 beanFactory.registerResolvableDependency(ApplicationContext.class, applicationContext); // 判断指定的 Bean 是否可以作为自动注入的候选者 String beanName = "myService"; DependencyDescriptor dependencyDescriptor = new DependencyDescriptor(MyController.class.getDeclaredField("myService"), false); boolean isAutowireCandidate = beanFactory.isAutowireCandidate(beanName, dependencyDescriptor); System.out.println(beanName + " 是否为自动注入的候选者: " + isAutowireCandidate); // 获取指定 Bean 的 BeanDefinition BeanDefinition beanDefinition = beanFactory.getBeanDefinition(beanName); System.out.println(beanName + " 的 BeanDefinition: " + beanDefinition); // 获取所有 Bean 的名称的迭代器 Iterator<String> beanNamesIterator = beanFactory.getBeanNamesIterator(); System.out.print("所有 Bean 的名称: "); beanNamesIterator.forEachRemaining(System.out::print); // 清除元数据缓存 beanFactory.clearMetadataCache(); // 冻结配置 beanFactory.freezeConfiguration(); // 判断配置是否已冻结 boolean isConfigurationFrozen = beanFactory.isConfigurationFrozen(); System.out.println("配置是否已冻结: " + isConfigurationFrozen); // 预实例化所有非懒加载的单例 Bean beanFactory.preInstantiateSingletons();
43
512
555
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-factory/spring-factory-hierarchicalBeanFactory/src/main/java/com/xcs/spring/HierarchicalBeanFactoryDemo.java
HierarchicalBeanFactoryDemo
main
class HierarchicalBeanFactoryDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建父级容器 AnnotationConfigApplicationContext parentContext = new AnnotationConfigApplicationContext(MyBean.class); // 创建子级容器 AnnotationConfigApplicationContext childContext = new AnnotationConfigApplicationContext(); childContext.setParent(parentContext); // 在子级 BeanFactory 中获取 bean HierarchicalBeanFactory childHierarchicalBeanFactory = childContext.getBeanFactory(); System.out.println("在子级BeanFactory中获取Bean: " + childHierarchicalBeanFactory.getBean(MyBean.class)); // 在父级 BeanFactory 中获取 bean HierarchicalBeanFactory parentHierarchicalBeanFactory = parentContext.getBeanFactory(); System.out.println("在父级BeanFactory中获取Bean: " + parentHierarchicalBeanFactory.getBean(MyBean.class)); // 获取父级 BeanFactory BeanFactory parentBeanFactory = childHierarchicalBeanFactory.getParentBeanFactory(); System.out.println("获取父级BeanFactory: " + parentBeanFactory); // 判断本地 BeanFactory 是否包含指定名称的 bean boolean containsLocalBean = childHierarchicalBeanFactory.containsLocalBean("myBean"); System.out.println("判断本地BeanFactory是否包含指定名称的Bean: " + containsLocalBean); // 判断整个 BeanFactory 是否包含指定名称的 bean boolean containsBean = childHierarchicalBeanFactory.containsBean("myBean"); System.out.println("判断整个BeanFactory是否包含指定名称的Bean: " + containsBean);
37
396
433
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-factory/spring-factory-listableBeanFactory/src/main/java/com/xcs/spring/ListableBeanFactoryDemo.java
ListableBeanFactoryDemo
main
class ListableBeanFactoryDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建 ListableBeanFactory ListableBeanFactory beanFactory = new AnnotationConfigApplicationContext(MyConfiguration.class).getBeanFactory(); // 判断是否包含指定名称的 bean 定义 boolean containsBeanDefinition = beanFactory.containsBeanDefinition("myService"); System.out.println("判断是否包含指定名称的Bean定义: " + containsBeanDefinition); // 获取工厂中所有 bean 定义的数量 int beanDefinitionCount = beanFactory.getBeanDefinitionCount(); System.out.println("获取工厂中所有Bean定义数量: " + beanDefinitionCount); // 获取工厂中所有 bean 定义的名称数组 String[] beanDefinitionNames = beanFactory.getBeanDefinitionNames(); System.out.println("获取工厂中所有Bean定义名称: " + String.join(", ", beanDefinitionNames)); // 获取 ObjectProvider,并懒加载获取 bean 实例 ObjectProvider<MyService> objectProvider = beanFactory.getBeanProvider(MyService.class, true); System.out.println("获取Bean的ObjectProvider: " + objectProvider.getObject()); // 根据类型获取所有 bean 的名称 String[] beanNamesForType = beanFactory.getBeanNamesForType(ResolvableType.forClass(MyService.class)); System.out.println("根据类型获取Bean名称: " + String.join(", ", beanNamesForType)); // 根据注解类型获取所有 bean 的名称 String[] beanNamesForAnnotation = beanFactory.getBeanNamesForAnnotation(Service.class); System.out.println("根据注解获取Bean名称: " + String.join(", ", beanNamesForAnnotation)); // 根据注解类型获取所有 bean 实例 Map<String, Object> beansWithAnnotation = beanFactory.getBeansWithAnnotation(Service.class); System.out.println("根据注解类型获取所有Bean实例: " + beansWithAnnotation); // 在指定 bean 上查找指定类型的注解 Service annotation = beanFactory.findAnnotationOnBean("myService", Service.class); System.out.println("指定Bean上查找指定类型的注解: " + annotation);
36
546
582
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-interface/spring-interface-beanDefinitionRegistryPostProcessor/src/main/java/com/xcs/spring/BeanDefinitionRegistryPostProcessorApplication.java
BeanDefinitionRegistryPostProcessorApplication
main
class BeanDefinitionRegistryPostProcessorApplication { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(MyConfiguration.class); MySimpleBean mySimpleBean1 = context.getBean(MySimpleBean.class); mySimpleBean1.show();
37
54
91
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-interface/spring-interface-beanDefinitionRegistryPostProcessor/src/main/java/com/xcs/spring/config/MyBeanDefinitionRegistryPostProcessor.java
MyBeanDefinitionRegistryPostProcessor
postProcessBeanDefinitionRegistry
class MyBeanDefinitionRegistryPostProcessor implements BeanDefinitionRegistryPostProcessor { @Override public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException { } @Override public void postProcessBeanDefinitionRegistry(BeanDefinitionRegistry registry) throws BeansException {<FILL_FUNCTION_BODY>} }
System.out.println("开始新增Bean定义"); // 创建一个新的 BeanDefinition 对象 BeanDefinition beanDefinition = new RootBeanDefinition(MySimpleBean.class); // 使用 registry 来注册这个新的 bean 定义 registry.registerBeanDefinition("mySimpleBean", beanDefinition); System.out.println("完成新增Bean定义");
87
92
179
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-interface/spring-interface-beanFactoryPostProcessor/src/main/java/com/xcs/spring/BeanFactoryPostProcessorApplication.java
BeanFactoryPostProcessorApplication
main
class BeanFactoryPostProcessorApplication { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(MyConfiguration.class); MySimpleBean mySimpleBean1 = context.getBean(MySimpleBean.class); MySimpleBean mySimpleBean2 = context.getBean(MySimpleBean.class); mySimpleBean1.show(); mySimpleBean2.show();
36
86
122
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-interface/spring-interface-beanPostProcessor/src/main/java/com/xcs/spring/BeanPostProcessorApplication.java
BeanPostProcessorApplication
main
class BeanPostProcessorApplication { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(MyConfiguration.class); MyService myService = context.getBean(MyService.class); System.out.println(myService.show()); context.close();
35
60
95
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-interface/spring-interface-beanPostProcessor/src/main/java/com/xcs/spring/config/MyBeanPostProcessor.java
MyBeanPostProcessor
postProcessAfterInitialization
class MyBeanPostProcessor implements BeanPostProcessor { @Override public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException { if(bean instanceof MyServiceImpl) { MyServiceImpl myService = (MyServiceImpl) bean; myService.setMessage("Prefix: " + myService.getMessage()); } return bean; } @Override public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {<FILL_FUNCTION_BODY>} }
if(bean instanceof MyServiceImpl) { MyServiceImpl myService = (MyServiceImpl) bean; myService.setMessage(myService.getMessage() + " :Suffix"); } return bean;
134
57
191
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-interface/spring-interface-destructionAwareBeanPostProcessor/src/main/java/com/xcs/spring/DestructionAwareBeanPostProcessorApplication.java
DestructionAwareBeanPostProcessorApplication
main
class DestructionAwareBeanPostProcessorApplication { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(MyConfiguration.class); ConnectionService connection = context.getBean("connectionService", ConnectionService.class); System.out.println("Is connected: " + connection.isConnected()); context.close();
38
68
106
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-interface/spring-interface-destructionAwareBeanPostProcessor/src/main/java/com/xcs/spring/config/MyDestructionAwareBeanPostProcessor.java
MyDestructionAwareBeanPostProcessor
postProcessAfterInitialization
class MyDestructionAwareBeanPostProcessor implements DestructionAwareBeanPostProcessor { @Override public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {<FILL_FUNCTION_BODY>} @Override public void postProcessBeforeDestruction(Object bean, String beanName) throws BeansException { if (bean instanceof ConnectionServiceImpl) { ((ConnectionServiceImpl) bean).closeConnection(); } } @Override public boolean requiresDestruction(Object bean) { return (bean instanceof ConnectionServiceImpl); } }
if (bean instanceof ConnectionServiceImpl) { ((ConnectionServiceImpl) bean).openConnection(); } return bean;
146
34
180
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-interface/spring-interface-destructionAwareBeanPostProcessor/src/main/java/com/xcs/spring/service/ConnectionServiceImpl.java
ConnectionServiceImpl
closeConnection
class ConnectionServiceImpl implements ConnectionService { private boolean isConnected = false; @Override public void openConnection() { isConnected = true; System.out.println("connection opened."); } @Override public void closeConnection() {<FILL_FUNCTION_BODY>} @Override public boolean isConnected() { return isConnected; } }
if (isConnected) { isConnected = false; System.out.println("connection closed."); }
106
34
140
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-interface/spring-interface-disposableBean/src/main/java/com/xcs/spring/config/MyDisposableBean.java
MyDisposableBean
destroy
class MyDisposableBean implements DisposableBean { // 模拟的数据库连接对象 private String databaseConnection; public MyDisposableBean() { // 在构造函数中模拟建立数据库连接 this.databaseConnection = "Database connection established"; System.out.println(databaseConnection); } @Override public void destroy() throws Exception {<FILL_FUNCTION_BODY>} }
// 在 destroy 方法中模拟关闭数据库连接 databaseConnection = null; System.out.println("Database connection closed");
114
38
152
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-interface/spring-interface-initializingBean/src/main/java/com/xcs/spring/config/MyInitializingBean.java
MyInitializingBean
afterPropertiesSet
class MyInitializingBean implements InitializingBean { private List<String> data; public List<String> getData() { return data; } @Override public void afterPropertiesSet() {<FILL_FUNCTION_BODY>} }
// 在此方法中,我们模拟数据加载 data = new ArrayList<>(); data.add("数据1"); data.add("数据2"); data.add("数据3"); System.out.println("MyInitializingBean 初始化完毕,数据已加载!");
69
77
146
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-interface/spring-interface-instantiationAwareBeanPostProcessor/src/main/java/com/xcs/spring/InstantiationAwareBeanPostProcessorApplication.java
InstantiationAwareBeanPostProcessorApplication
main
class InstantiationAwareBeanPostProcessorApplication { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(MyConfiguration.class); DataBase userService = context.getBean(DataBase.class); System.out.println("username = " + userService.getUsername()); System.out.println("password = " + userService.getPassword()); System.out.println("postInstantiationFlag = " + userService.isPostInstantiationFlag());
39
104
143
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-interface/spring-interface-instantiationAwareBeanPostProcessor/src/main/java/com/xcs/spring/config/MyInstantiationAwareBeanPostProcessor.java
MyInstantiationAwareBeanPostProcessor
postProcessProperties
class MyInstantiationAwareBeanPostProcessor implements InstantiationAwareBeanPostProcessor { @Override public Object postProcessBeforeInstantiation(Class<?> beanClass, String beanName) throws BeansException { if (beanClass == DataBase.class) { System.out.println("正在准备实例化: " + beanName); } return null; } @Override public boolean postProcessAfterInstantiation(Object bean, String beanName) throws BeansException { if (bean instanceof DataBase) { ((DataBase) bean).setPostInstantiationFlag(true); System.out.println("Bean " + beanName + " 已实例化!"); return true; } return true; } @Override public PropertyValues postProcessProperties(PropertyValues pvs, Object bean, String beanName) throws BeansException {<FILL_FUNCTION_BODY>} }
if (bean instanceof DataBase) { MutablePropertyValues mpvs = (MutablePropertyValues) pvs; mpvs.addPropertyValue("password", "******"); System.out.println(beanName + "的密码已被屏蔽:"); } return pvs;
234
77
311
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-interface/spring-interface-mergedBeanDefinitionPostProcessor/src/main/java/com/xcs/spring/MergedBeanDefinitionPostProcessorApplication.java
MergedBeanDefinitionPostProcessorApplication
main
class MergedBeanDefinitionPostProcessorApplication { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(MyConfiguration.class); MyBean bean = context.getBean(MyBean.class); System.out.println("message = " + bean.getMessage());
38
56
94
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-interface/spring-interface-mergedBeanDefinitionPostProcessor/src/main/java/com/xcs/spring/config/MyMergedBeanDefinitionPostProcessor.java
MyMergedBeanDefinitionPostProcessor
postProcessAfterInitialization
class MyMergedBeanDefinitionPostProcessor implements MergedBeanDefinitionPostProcessor { /** * 记录元数据 */ private Map<String, Map<Field, String>> metadata = new HashMap<>(); @Override public void postProcessMergedBeanDefinition(RootBeanDefinition beanDefinition, Class<?> beanType, String beanName) { Field[] fields = beanType.getDeclaredFields(); Map<Field, String> defaultValues = new HashMap<>(); for (Field field : fields) { if (field.isAnnotationPresent(MyValue.class)) { MyValue annotation = field.getAnnotation(MyValue.class); defaultValues.put(field, annotation.value()); } } if (!defaultValues.isEmpty()) { metadata.put(beanName, defaultValues); } } @Override public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {<FILL_FUNCTION_BODY>} }
if (metadata.containsKey(beanName)) { Map<Field, String> defaultValues = metadata.get(beanName); for (Map.Entry<Field, String> entry : defaultValues.entrySet()) { Field field = entry.getKey(); String value = entry.getValue(); try { field.setAccessible(true); if (field.get(bean) == null) { field.set(bean, value); } } catch (IllegalAccessException e) { e.printStackTrace(); } } } return bean;
248
149
397
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-interface/spring-interface-smartInitializingSingleton/src/main/java/com/xcs/spring/service/MyService.java
MyService
getDate
class MyService { /** * 这里使用了Java的Timer来模拟定时任务。在实际应用中,可能会使用更复杂的调度机制。 */ public void startScheduledTask() { new java.util.Timer().schedule( new java.util.TimerTask() { @Override public void run() { System.out.println(getDate() + " hello world "); } }, 0, 2000 ); } /** * 获取当前时间 * * @return */ public String getDate() {<FILL_FUNCTION_BODY>} }
LocalDateTime now = LocalDateTime.now(); DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"); return now.format(formatter);
170
52
222
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-interface/spring-interface-smartInstantiationAwareBeanPostProcessor/src/main/java/com/xcs/spring/config/MySmartInstantiationAwareBeanPostProcessor.java
MySmartInstantiationAwareBeanPostProcessor
determineCandidateConstructors
class MySmartInstantiationAwareBeanPostProcessor implements SmartInstantiationAwareBeanPostProcessor { @Override public Constructor<?>[] determineCandidateConstructors(Class<?> beanClass, String beanName) throws BeansException {<FILL_FUNCTION_BODY>} }
// 首先,查找@MyAutowired带注释的构造函数 List<Constructor<?>> myAutowiredConstructors = Arrays.stream(beanClass.getConstructors()) .filter(constructor -> constructor.isAnnotationPresent(MyAutowired.class)) .collect(Collectors.toList()); if (!myAutowiredConstructors.isEmpty()) { return myAutowiredConstructors.toArray(new Constructor<?>[0]); } // 其次,检查默认构造函数 try { Constructor<?> defaultConstructor = beanClass.getDeclaredConstructor(); return new Constructor<?>[]{defaultConstructor}; } catch (NoSuchMethodException e) { // 找不到默认构造函数,请继续选择合适的构造函数 } // 返回所有构造函数,让Spring将选择最具体的构造函数 return beanClass.getConstructors();
74
250
324
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-jsr/spring-jsr250-resource/src/main/java/com/xcs/spring/ResourceApplication.java
ResourceApplication
main
class ResourceApplication { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(MyConfiguration.class); MyController controller = context.getBean(MyController.class); controller.showService();
32
47
79
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-jsr/spring-jsr330-inject/src/main/java/com/xcs/spring/InjectApplication.java
InjectApplication
main
class InjectApplication { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(MyConfiguration.class); MyController controller = context.getBean(MyController.class); controller.showService();
33
47
80
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-jsr/spring-jsr330-named/src/main/java/com/xcs/spring/NamedApplication.java
NamedApplication
main
class NamedApplication { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(MyConfiguration.class); MyController controller = context.getBean(MyController.class); controller.showService();
33
47
80
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-jsr/spring-jsr330-provider/src/main/java/com/xcs/spring/ProviderApplication.java
ProviderApplication
main
class ProviderApplication { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(MyConfiguration.class); MyController controller = context.getBean(MyController.class); controller.showService();
33
47
80
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-jsr/spring-jsr330-provider/src/main/java/com/xcs/spring/controller/MyController.java
MyController
showService
class MyController { @Autowired private Provider<MyService> myServiceProvider; public void showService(){<FILL_FUNCTION_BODY>} }
System.out.println("myServiceProvider1 = " + myServiceProvider.get()); System.out.println("myServiceProvider2 = " + myServiceProvider.get());
47
45
92
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-jsr/spring-jsr330-qualifier/src/main/java/com/xcs/spring/QualifierApplication.java
QualifierApplication
main
class QualifierApplication { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(MyConfiguration.class); MessageController messageController = context.getBean(MessageController.class); messageController.showMessage();
33
49
82
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-metadata/spring-metadata-annotationMetadata/src/main/java/com/xcs/spring/AnnotationMetadataDemoByASM.java
AnnotationMetadataDemoByASM
main
class AnnotationMetadataDemoByASM { public static void main(String[] args) throws Exception {<FILL_FUNCTION_BODY>} }
// 创建 MetadataReaderFactory SimpleMetadataReaderFactory readerFactory = new SimpleMetadataReaderFactory(); // 获取 MetadataReader MetadataReader metadataReader = readerFactory.getMetadataReader("com.xcs.spring.bean.MyBean"); // 获取 AnnotationMetadata AnnotationMetadata annotationMetadata = metadataReader.getAnnotationMetadata(); System.out.println("AnnotationMetadata impl class is " + annotationMetadata.getClass()); // 检查 MyBean 类是否被 @Component 注解标记 boolean isComponent = annotationMetadata.hasAnnotation(Component.class.getName()); System.out.println("MyBean is a @Component: " + isComponent); // 获取 MyBean 类上的注解属性 if (isComponent) { Map<String, Object> annotationAttributes = annotationMetadata.getAnnotationAttributes(Component.class.getName()); System.out.println("@Component value is " + annotationAttributes.get("value")); }
40
236
276
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-metadata/spring-metadata-annotationMetadata/src/main/java/com/xcs/spring/AnnotationMetadataDemoByReflection.java
AnnotationMetadataDemoByReflection
main
class AnnotationMetadataDemoByReflection { public static void main(String[] args) throws Exception {<FILL_FUNCTION_BODY>} }
// 获取 AnnotationMetadata AnnotationMetadata annotationMetadata = AnnotationMetadata.introspect(MyBean.class); System.out.println("AnnotationMetadata impl class is " + annotationMetadata.getClass()); // 检查 MyBean 类是否被 @Component 注解标记 boolean isComponent = annotationMetadata.hasAnnotation(Component.class.getName()); System.out.println("MyBean is a @Component: " + isComponent); // 获取 MyBean 类上的注解属性 if (isComponent) { Map<String, Object> annotationAttributes = annotationMetadata.getAnnotationAttributes(Component.class.getName()); System.out.println("@Component value is " + annotationAttributes.get("value")); }
40
182
222
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-metadata/spring-metadata-condition/src/main/java/com/xcs/spring/ConditionDemo.java
ConditionDemo
main
class ConditionDemo { public static void main(String[] args) throws IOException {<FILL_FUNCTION_BODY>} }
// 创建资源解析器,用于获取匹配指定模式的资源 PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver(); // 创建MetadataReader工厂,用于读取类的元数据信息 SimpleMetadataReaderFactory metadataReaderFactory = new SimpleMetadataReaderFactory(); // 获取指定模式下的所有资源 Resource[] resources = resolver.getResources("classpath*:com/xcs/spring/bean/**/*.class"); // 创建自定义条件类的实例,用于条件匹配 Condition condition = new MyOnClassCondition("com.xcs.spring.ConditionDemo1"); // 遍历每个资源,判断是否满足自定义条件 for (Resource resource : resources) { // 获取资源对应的元数据读取器 MetadataReader metadataReader = metadataReaderFactory.getMetadataReader(resource); // 判断资源是否满足自定义条件 if (condition.matches(null, metadataReader.getAnnotationMetadata())) { System.out.println(resource.getFile().getName() + "满足条件"); } else { System.out.println(resource.getFile().getName() + "不满足条件"); } }
35
299
334
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-metadata/spring-metadata-condition/src/main/java/com/xcs/spring/condition/MyOnClassCondition.java
MyOnClassCondition
matches
class MyOnClassCondition implements Condition { private final String className; public MyOnClassCondition(String className) { this.className = className; } @Override public boolean matches(ConditionContext context, AnnotatedTypeMetadata metadata) {<FILL_FUNCTION_BODY>} }
try { // 尝试加载类 getClass().getClassLoader().loadClass(className); // 类存在,条件匹配 return true; } catch (ClassNotFoundException e) { // 类不存在,条件不匹配 return false; }
78
75
153
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-metadata/spring-metadata-metadataReader/src/main/java/com/xcs/spring/MetadataReaderDemo.java
MetadataReaderDemo
main
class MetadataReaderDemo { public static void main(String[] args) throws IOException {<FILL_FUNCTION_BODY>} }
// 创建 MetadataReaderFactory SimpleMetadataReaderFactory readerFactory = new SimpleMetadataReaderFactory(); // 获取 MetadataReader,通常由 Spring 容器自动创建 MetadataReader metadataReader = readerFactory.getMetadataReader("com.xcs.spring.bean.MyBean"); // 获取类的基本信息 ClassMetadata classMetadata = metadataReader.getClassMetadata(); System.out.println("Class Name = " + classMetadata.getClassName()); System.out.println("Class IsInterface = " + classMetadata.isInterface()); System.out.println("Class IsAnnotation = " + classMetadata.isAnnotation()); System.out.println("Class IsAbstract = " + classMetadata.isAbstract()); System.out.println("Class IsConcrete = " + classMetadata.isConcrete()); System.out.println("Class IsFinal = " + classMetadata.isFinal()); System.out.println("Class IsIndependent = " + classMetadata.isIndependent()); System.out.println("Class HasEnclosingClass = " + classMetadata.hasEnclosingClass()); System.out.println("Class EnclosingClassName = " + classMetadata.getEnclosingClassName()); System.out.println("Class HasSuperClass = " + classMetadata.hasSuperClass()); System.out.println("Class SuperClassName = " + classMetadata.getSuperClassName()); System.out.println("Class InterfaceNames = " + Arrays.toString(classMetadata.getInterfaceNames())); System.out.println("Class MemberClassNames = " + Arrays.toString(classMetadata.getMemberClassNames())); System.out.println("Class Annotations: " + metadataReader.getAnnotationMetadata().getAnnotationTypes()); System.out.println(); // 获取方法上的注解信息 for (MethodMetadata methodMetadata : metadataReader.getAnnotationMetadata().getAnnotatedMethods("com.xcs.spring.annotation.MyAnnotation")) { System.out.println("Method Name: " + methodMetadata.getMethodName()); System.out.println("Method DeclaringClassName: " + methodMetadata.getDeclaringClassName()); System.out.println("Method ReturnTypeName: " + methodMetadata.getReturnTypeName()); System.out.println("Method IsAbstract: " + methodMetadata.isAbstract()); System.out.println("Method IsStatic: " + methodMetadata.isStatic()); System.out.println("Method IsFinal: " + methodMetadata.isFinal()); System.out.println("Method IsOverridable: " + methodMetadata.isOverridable()); System.out.println(); }
36
634
670
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-metadata/spring-metadata-typeFilter/src/main/java/com/xcs/spring/TypeFilterDemo.java
TypeFilterDemo
main
class TypeFilterDemo { public static void main(String[] args) throws IOException {<FILL_FUNCTION_BODY>} }
// 创建路径匹配的资源模式解析器 PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver(); // 创建一个简单的元数据读取器工厂 SimpleMetadataReaderFactory metadataReaderFactory = new SimpleMetadataReaderFactory(); // 创建一个注解类型过滤器,用于匹配带有 MyAnnotation 注解的类 TypeFilter annotationTypeFilter = new AnnotationTypeFilter(MyAnnotation.class); // 使用资源模式解析器获取所有匹配指定路径的类文件 Resource[] resources = resolver.getResources("classpath*:com/xcs/spring/**/*.class"); // 遍历扫描到的类文件 for (Resource resource : resources) { // 获取元数据读取器 MetadataReader metadataReader = metadataReaderFactory.getMetadataReader(resource); // 使用注解类型过滤器匹配当前类 boolean match = annotationTypeFilter.match(metadataReader, metadataReaderFactory); // 输出扫描到的文件名和匹配结果 System.out.printf("扫描到的文件: %-20s || 筛选器是否匹配: %s%n", resource.getFile().getName(), match); }
36
305
341
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-resources/spring-resource-documentLoader/src/main/java/com/xcs/spring/DocumentLoaderDemo.java
DocumentLoaderDemo
printElementInfo
class DocumentLoaderDemo { public static void main(String[] args) { try { // 创建要加载的资源对象 Resource resource = new ClassPathResource("sample.xml"); // 创建 DocumentLoader 实例 DefaultDocumentLoader documentLoader = new DefaultDocumentLoader(); // 加载和解析 XML 文档 Document document = documentLoader.loadDocument(new InputSource(resource.getInputStream()), null, null, 0, true); // 打印 XML 文档的内容 printDetailedDocumentInfo(document); } catch (Exception e) { e.printStackTrace(); } } /** * 打印详细的XML文档信息,包括元素、属性和文本内容。 * * @param document 要打印的XML文档对象 */ private static void printDetailedDocumentInfo(Document document) { Element rootElement = document.getDocumentElement(); printElementInfo(rootElement, ""); } /** * 递归打印XML元素的详细信息,包括元素名称、属性和子节点。 * * @param element 要打印的XML元素 * @param indent 当前打印的缩进 */ private static void printElementInfo(Element element, String indent) {<FILL_FUNCTION_BODY>} }
// 打印元素名称 System.out.println(indent + "Element: " + element.getNodeName()); // 打印元素的属性 NamedNodeMap attributes = element.getAttributes(); for (int i = 0; i < attributes.getLength(); i++) { Node attribute = attributes.item(i); System.out.println(indent + " Attribute: " + attribute.getNodeName() + " = " + attribute.getNodeValue()); } // 打印元素的子节点(可能是元素或文本) NodeList childNodes = element.getChildNodes(); for (int i = 0; i < childNodes.getLength(); i++) { Node childNode = childNodes.item(i); if (childNode.getNodeType() == Node.ELEMENT_NODE) { // 如果子节点是元素,递归打印它 printElementInfo((Element) childNode, indent + " "); } else if (childNode.getNodeType() == Node.TEXT_NODE) { // 如果子节点是文本,打印文本内容 System.out.println(indent + " Text: " + childNode.getNodeValue().trim()); } }
343
315
658
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-resources/spring-resource-resourceLoader/src/main/java/com/xcs/spring/DefaultResourceLoaderDemo.java
DefaultResourceLoaderDemo
main
class DefaultResourceLoaderDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
DefaultResourceLoader loader = new DefaultResourceLoader(); // 从类路径加载资源 Resource classpathResource = loader.getResource("classpath:application.properties"); System.out.println("Classpath Exists= " + classpathResource.exists()); // 加载文件系统中的资源 Resource fileResource = loader.getResource("file:/idea-work-space-xcs/spring-reading/spring-resources/spring-resource-resourceLoader/myfile1.txt"); System.out.println("File Exists = " + fileResource.exists());
34
140
174
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-resources/spring-resource-resourceLoader/src/main/java/com/xcs/spring/PathMatchingResourcePatternResolverDemo.java
PathMatchingResourcePatternResolverDemo
main
class PathMatchingResourcePatternResolverDemo { public static void main(String[] args) throws Exception {<FILL_FUNCTION_BODY>} }
PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver(); // 加载所有匹配的类路径资源 Resource[] resources = resolver.getResources("classpath*:*.properties"); for (Resource resource : resources) { System.out.println("Classpath = " + resource.getFilename()); } // 加载文件系统中的所有匹配资源 Resource[] fileResources = resolver.getResources("file:/idea-work-space-xcs/spring-reading/spring-resources/spring-resource-resourceLoader/*.txt"); for (Resource resource : fileResources) { System.out.println("File = " + resource.getFilename()); }
39
176
215
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-resources/spring-resource-resourcePatternResolver/src/main/java/com/xcs/spring/ResourcePatternResolverDemo.java
ResourcePatternResolverDemo
main
class ResourcePatternResolverDemo { public static void main(String[] args) throws Exception {<FILL_FUNCTION_BODY>} }
ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver(); // 加载所有匹配的类路径资源 Resource[] resources = resolver.getResources("classpath*:*.properties"); for (Resource resource : resources) { System.out.println("Classpath = " + resource.getFilename()); } // 加载文件系统中的所有匹配资源 Resource[] fileResources = resolver.getResources("file:/idea-work-space-xcs/spring-reading/spring-resources/spring-resource-resourceLoader/*.txt"); for (Resource resource : fileResources) { System.out.println("File = " + resource.getFilename()); }
36
173
209
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-resources/spring-resource/src/main/java/com/xcs/spring/ByteArrayResourceDemo.java
ByteArrayResourceDemo
main
class ByteArrayResourceDemo { public static void main(String[] args) throws Exception {<FILL_FUNCTION_BODY>} }
byte[] data = "hello world".getBytes(); Resource resource = new ByteArrayResource(data); try (InputStream is = resource.getInputStream()) { // 读取和处理资源内容 System.out.println(new String(is.readAllBytes())); }
36
71
107
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-resources/spring-resource/src/main/java/com/xcs/spring/ClassPathResourceDemo.java
ClassPathResourceDemo
main
class ClassPathResourceDemo { public static void main(String[] args) throws Exception {<FILL_FUNCTION_BODY>} }
String path = "application.properties"; Resource resource = new ClassPathResource(path); try (InputStream is = resource.getInputStream()) { // 读取和处理资源内容 System.out.println(new String(is.readAllBytes())); }
36
68
104
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-resources/spring-resource/src/main/java/com/xcs/spring/FileSystemResourceDemo.java
FileSystemResourceDemo
main
class FileSystemResourceDemo { public static void main(String[] args) throws Exception {<FILL_FUNCTION_BODY>} }
// 请替换你自己的目录 String path = "D:\\idea-work-space-xcs\\spring-reading\\spring-resources\\spring-resource\\myfile.txt"; Resource resource = new FileSystemResource(path); try (InputStream is = resource.getInputStream()) { // 读取和处理资源内容 System.out.println(new String(is.readAllBytes())); }
36
104
140
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-resources/spring-resource/src/main/java/com/xcs/spring/InputStreamResourceDemo.java
InputStreamResourceDemo
main
class InputStreamResourceDemo { public static void main(String[] args) throws Exception {<FILL_FUNCTION_BODY>} }
InputStream isSource = new ByteArrayInputStream("hello world".getBytes()); Resource resource = new InputStreamResource(isSource); try (InputStream is = resource.getInputStream()) { // 读取和处理资源内容 System.out.println(new String(is.readAllBytes())); }
36
77
113
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-resources/spring-resource/src/main/java/com/xcs/spring/UrlResourceDemo.java
UrlResourceDemo
main
class UrlResourceDemo { public static void main(String[] args) throws Exception {<FILL_FUNCTION_BODY>} }
Resource resource = new UrlResource("https://dist.apache.org/repos/dist/test/test.txt"); try (InputStream is = resource.getInputStream()) { // 读取和处理资源内容 System.out.println(new String(is.readAllBytes())); }
36
75
111
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-spel/spring-spel-beanResolver/src/main/java/com/xcs/spring/BeanResolverDemo.java
BeanResolverDemo
main
class BeanResolverDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建 BeanFactory // 这里使用注解配置的方式创建 BeanFactory BeanFactory beanFactory = new AnnotationConfigApplicationContext(MyBean.class).getBeanFactory(); // 创建一个SpEL表达式解析器 ExpressionParser parser = new SpelExpressionParser(); // 创建一个标准的评估上下文 StandardEvaluationContext context = new StandardEvaluationContext(); // 将 BeanFactoryResolver 设置为上下文的 BeanResolver context.setBeanResolver(new BeanFactoryResolver(beanFactory)); // 解析 SpEL 表达式,获取 Bean 实例 Object myBean = parser.parseExpression("@myBean").getValue(context); // 打印 Bean 实例 System.out.println("myBean = " + myBean);
34
203
237
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-spel/spring-spel-constructorResolver/src/main/java/com/xcs/spring/ConstructorResolverDemo.java
ConstructorResolverDemo
main
class ConstructorResolverDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建一个SpEL表达式解析器 ExpressionParser parser = new SpelExpressionParser(); // 解析SpEL表达式,并使用构造函数实例化对象 // 这里的SpEL表达式是一个构造函数调用,创建了一个MyBean对象,参数为'spring-reading' MyBean myBean = parser.parseExpression("new com.xcs.spring.MyBean('spring-reading')").getValue(MyBean.class); // 打印输出实例化的MyBean对象 System.out.println(myBean);
34
144
178
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-spel/spring-spel-constructorResolver/src/main/java/com/xcs/spring/MyBean.java
MyBean
toString
class MyBean { private String name; public MyBean(String name) { this.name = name; } public String getName() { return name; } public void setName(String name) { this.name = name; } @Override public String toString() {<FILL_FUNCTION_BODY>} }
return "MyBean{" + "name='" + name + '\'' + '}';
101
28
129
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-spel/spring-spel-evaluationContext/src/main/java/com/xcs/spring/EvaluationContextDemo.java
EvaluationContextDemo
main
class EvaluationContextDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} // 定义根对象的类 static class MyRootObject { private String data; public MyRootObject(String data) { this.data = data; } public String getData() { return data; } public void setData(String data) { this.data = data; } } }
// 创建评估上下文 EvaluationContext context = new StandardEvaluationContext(new MyRootObject("Root Data")); // 获取根对象 TypedValue root = context.getRootObject(); System.out.println("根对象: " + root.getValue()); // 设置变量 context.setVariable("name", "John"); System.out.println("变量'name'的值: " + context.lookupVariable("name")); // 获取属性访问器 List<PropertyAccessor> propertyAccessors = context.getPropertyAccessors(); System.out.println("属性访问器: " + propertyAccessors); // 获取构造函数解析器 List<ConstructorResolver> constructorResolvers = context.getConstructorResolvers(); System.out.println("构造函数解析器: " + constructorResolvers); // 获取方法解析器 List<MethodResolver> methodResolvers = context.getMethodResolvers(); System.out.println("方法解析器: " + methodResolvers); // 获取 bean 解析器 BeanResolver beanResolver = context.getBeanResolver(); System.out.println("bean 解析器: " + beanResolver); // 获取类型定位器 TypeLocator typeLocator = context.getTypeLocator(); System.out.println("类型定位器: " + typeLocator); // 获取类型转换器 TypeConverter typeConverter = context.getTypeConverter(); System.out.println("类型转换器: " + typeConverter); // 获取类型比较器 TypeComparator typeComparator = context.getTypeComparator(); System.out.println("类型比较器: " + typeComparator); // 获取运算符重载器 OperatorOverloader operatorOverloader = context.getOperatorOverloader(); System.out.println("运算符重载器: " + operatorOverloader);
125
493
618
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-spel/spring-spel-expression/src/main/java/com/xcs/spring/ExpressionDemo.java
ExpressionDemo
main
class ExpressionDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建解析器实例 ExpressionParser parser = new SpelExpressionParser(); // 解析基本表达式 Expression expression = parser.parseExpression("100 + 10"); // 为表达式计算结果 Integer result = expression.getValue(Integer.class); System.out.println("表达式 '100 + 10' 的结果为: " + result);
33
102
135
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-spel/spring-spel-expressionParser/src/main/java/com/xcs/spring/ExpressionParserDemo.java
ExpressionParserDemo
main
class ExpressionParserDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建解析器实例 ExpressionParser parser = new SpelExpressionParser(); // 解析基本表达式 Expression expression = parser.parseExpression("100 * 2 + 10"); System.out.println("expression = " + expression);
38
78
116
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-spel/spring-spel-methodResolver/src/main/java/com/xcs/spring/MethodResolverDemo.java
MethodResolverDemo
main
class MethodResolverDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建一个SpEL表达式解析器 ExpressionParser parser = new SpelExpressionParser(); StandardEvaluationContext context = new StandardEvaluationContext(); // 在 MyBean 中定义的方法将被 SpEL 表达式调用 MyBean myBean = new MyBean(); context.setVariable("myBean", myBean); // 创建一个 SpEL 表达式,调用 MyBean 中的方法 SpelExpression expression = (SpelExpression) parser.parseExpression("#myBean.add(10, 5)"); // 为表达式设置上下文,并计算结果 int result = (int) expression.getValue(context); // 打印输出实例化的MyBean对象 System.out.println("result = " + result);
34
196
230
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-spel/spring-spel-operatorOverloader/src/main/java/OperatorOverloaderDemo.java
OperatorOverloaderDemo
main
class OperatorOverloaderDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建表达式解析器 ExpressionParser parser = new SpelExpressionParser(); // 创建表达式上下文 StandardEvaluationContext context = new StandardEvaluationContext(); // 创建自定义的OperatorOverloader实例并注册到表达式上下文中 context.setOperatorOverloader(new CustomOperatorOverloader()); context.setVariable("myBean1", new MyBean(18)); context.setVariable("myBean2", new MyBean(20)); // 定义一个SpEL表达式,使用自定义的运算符 Expression expression = parser.parseExpression("#myBean1 + #myBean2"); // 解析并评估表达式 MyBean myBean = expression.getValue(context, MyBean.class); System.out.println("myBean1+myBean2 = " + myBean);
36
215
251
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-spel/spring-spel-propertyAccessor/src/main/java/com/xcs/spring/PropertyAccessorDemo.java
PropertyAccessorDemo
main
class PropertyAccessorDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建一个SpEL表达式解析器 ExpressionParser parser = new SpelExpressionParser(); StandardEvaluationContext context = new StandardEvaluationContext(); context.setVariable("myBean",new MyBean("spring-reading")); // 解析SpEL表达式,并使用构造函数实例化对象 String name = parser.parseExpression("#myBean.name").getValue(context, String.class); System.out.println("name = " + name);
35
123
158
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-spel/spring-spel-typeComparator/src/main/java/com/xcs/spring/TypeComparatorDemo.java
TypeComparatorDemo
main
class TypeComparatorDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建一个EvaluationContext StandardEvaluationContext context = new StandardEvaluationContext(); // 创建SpEL表达式解析器 SpelExpressionParser parser = new SpelExpressionParser(); // 解析表达式 Expression expression = parser.parseExpression("'2' < '-5.0'"); // 使用TypeComparator进行比较 boolean result = expression.getValue(context,Boolean.class); // 打印比较后的值 System.out.println("result : " + result);
35
134
169
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-spel/spring-spel-typeConverter/src/main/java/com/xcs/spring/TypeConverterDemo.java
TypeConverterDemo
main
class TypeConverterDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建SpEL表达式解析器 SpelExpressionParser parser = new SpelExpressionParser(); // 创建一个EvaluationContext StandardEvaluationContext context = new StandardEvaluationContext(); // 定义一个需要转换的值 String stringValue = "'123'"; // 解析表达式 Expression expression = parser.parseExpression(stringValue); // 使用TypeConverter进行转换 Integer intValue = expression.getValue(context, Integer.class); // 打印转换后的值 System.out.println("Converted Integer value: " + intValue);
34
157
191
<no_super_class>
xuchengsheng_spring-reading
spring-reading/spring-spel/spring-spel-typeLocator/src/main/java/com/xcs/spring/TypeLocatorDemo.java
TypeLocatorDemo
main
class TypeLocatorDemo { public static void main(String[] args) {<FILL_FUNCTION_BODY>} }
// 创建一个SpEL表达式解析器 ExpressionParser parser = new SpelExpressionParser(); // 解析表达式获取 Date 类的 Class 对象 Class dateClass = parser.parseExpression("T(java.util.Date)").getValue(Class.class); System.out.println("dateClass = " + dateClass); // 解析表达式获取 String 类的 Class 对象 Class stringClass = parser.parseExpression("T(String)").getValue(Class.class); System.out.println("stringClass = " + stringClass); // 解析表达式比较两个 RoundingMode 枚举值的大小 boolean trueValue = parser.parseExpression("T(java.math.RoundingMode).CEILING < T(java.math.RoundingMode).FLOOR").getValue(Boolean.class); System.out.println("trueValue = " + trueValue);
34
223
257
<no_super_class>
spring-projects_spring-retry
spring-retry/src/main/java/org/springframework/classify/BinaryExceptionClassifier.java
BinaryExceptionClassifier
classify
class BinaryExceptionClassifier extends SubclassClassifier<Throwable, Boolean> { private boolean traverseCauses; public static BinaryExceptionClassifierBuilder builder() { return new BinaryExceptionClassifierBuilder(); } public static BinaryExceptionClassifier defaultClassifier() { // create new instance for each call due to mutability return new BinaryExceptionClassifier( Collections.<Class<? extends Throwable>, Boolean>singletonMap(Exception.class, true), false); } /** * Create a binary exception classifier with the provided default value. * @param defaultValue defaults to false */ public BinaryExceptionClassifier(boolean defaultValue) { super(defaultValue); } /** * Create a binary exception classifier with the provided classes and their * subclasses. The mapped value for these exceptions will be the one provided (which * will be the opposite of the default). * @param exceptionClasses the exceptions to classify among * @param value the value to classify */ public BinaryExceptionClassifier(Collection<Class<? extends Throwable>> exceptionClasses, boolean value) { this(!value); if (exceptionClasses != null) { Map<Class<? extends Throwable>, Boolean> map = new HashMap<>(); for (Class<? extends Throwable> type : exceptionClasses) { map.put(type, !getDefault()); } setTypeMap(map); } } /** * Create a binary exception classifier with the default value false and value mapping * true for the provided classes and their subclasses. * @param exceptionClasses the exception types to throw */ public BinaryExceptionClassifier(Collection<Class<? extends Throwable>> exceptionClasses) { this(exceptionClasses, true); } /** * Create a binary exception classifier using the given classification map and a * default classification of false. * @param typeMap the map of types */ public BinaryExceptionClassifier(Map<Class<? extends Throwable>, Boolean> typeMap) { this(typeMap, false); } /** * Create a binary exception classifier using the given classification map and the * given value for default class. * @param defaultValue the default value to use * @param typeMap the map of types to classify */ public BinaryExceptionClassifier(Map<Class<? extends Throwable>, Boolean> typeMap, boolean defaultValue) { super(typeMap, defaultValue); } /** * Create a binary exception classifier. * @param defaultValue the default value to use * @param typeMap the map of types to classify * @param traverseCauses if true, throwable's causes will be inspected to find * non-default class */ public BinaryExceptionClassifier(Map<Class<? extends Throwable>, Boolean> typeMap, boolean defaultValue, boolean traverseCauses) { super(typeMap, defaultValue); this.traverseCauses = traverseCauses; } public void setTraverseCauses(boolean traverseCauses) { this.traverseCauses = traverseCauses; } @Override public Boolean classify(Throwable classifiable) {<FILL_FUNCTION_BODY>} }
Boolean classified = super.classify(classifiable); if (!this.traverseCauses) { return classified; } /* * If the result is the default, we need to find out if it was by default or so * configured; if default, try the cause(es). */ if (classified.equals(this.getDefault())) { Throwable cause = classifiable; do { if (this.getClassified().containsKey(cause.getClass())) { return classified; // non-default classification } cause = cause.getCause(); classified = super.classify(cause); } while (cause != null && classified.equals(this.getDefault())); } return classified;
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<methods>public void <init>() ,public void <init>(java.lang.Boolean) ,public void <init>(Map<Class<? extends java.lang.Throwable>,java.lang.Boolean>, java.lang.Boolean) ,public void add(Class<? extends java.lang.Throwable>, java.lang.Boolean) ,public java.lang.Boolean classify(java.lang.Throwable) ,public final java.lang.Boolean getDefault() ,public void setDefaultValue(java.lang.Boolean) ,public void setTypeMap(Map<Class<? extends java.lang.Throwable>,java.lang.Boolean>) <variables>private ConcurrentMap<Class<? extends java.lang.Throwable>,java.lang.Boolean> classified,private java.lang.Boolean defaultValue
spring-projects_spring-retry
spring-retry/src/main/java/org/springframework/classify/BinaryExceptionClassifierBuilder.java
BinaryExceptionClassifierBuilder
build
class BinaryExceptionClassifierBuilder { /** * Building notation type (white list or black list) - null: has not selected yet - * true: white list - false: black list */ private Boolean isWhiteList = null; private boolean traverseCauses = false; private final List<Class<? extends Throwable>> exceptionClasses = new ArrayList<>(); public BinaryExceptionClassifierBuilder retryOn(Class<? extends Throwable> throwable) { Assert.isTrue(isWhiteList == null || isWhiteList, "Please use only retryOn() or only notRetryOn()"); Assert.notNull(throwable, "Exception class can not be null"); isWhiteList = true; exceptionClasses.add(throwable); return this; } public BinaryExceptionClassifierBuilder notRetryOn(Class<? extends Throwable> throwable) { Assert.isTrue(isWhiteList == null || !isWhiteList, "Please use only retryOn() or only notRetryOn()"); Assert.notNull(throwable, "Exception class can not be null"); isWhiteList = false; exceptionClasses.add(throwable); return this; } public BinaryExceptionClassifierBuilder traversingCauses() { this.traverseCauses = true; return this; } public BinaryExceptionClassifier build() {<FILL_FUNCTION_BODY>} }
Assert.isTrue(!exceptionClasses.isEmpty(), "Attempt to build classifier with empty rules. To build always true, or always false " + "instance, please use explicit rule for Throwable"); BinaryExceptionClassifier classifier = new BinaryExceptionClassifier(exceptionClasses, isWhiteList // using // white // list // means // classifying // provided // classes // as // "true" // (is // retryable) ); classifier.setTraverseCauses(traverseCauses); return classifier;
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<no_super_class>
spring-projects_spring-retry
spring-retry/src/main/java/org/springframework/classify/ClassifierAdapter.java
ClassifierAdapter
setDelegate
class ClassifierAdapter<C, T> implements Classifier<C, T> { private MethodInvoker invoker; private Classifier<C, T> classifier; /** * Default constructor for use with setter injection. */ public ClassifierAdapter() { super(); } /** * Create a new {@link Classifier} from the delegate provided. Use the constructor as * an alternative to the {@link #setDelegate(Object)} method. * @param delegate the delegate */ public ClassifierAdapter(Object delegate) { setDelegate(delegate); } /** * Create a new {@link Classifier} from the delegate provided. Use the constructor as * an alternative to the {@link #setDelegate(Classifier)} method. * @param delegate the classifier to delegate to */ public ClassifierAdapter(Classifier<C, T> delegate) { this.classifier = delegate; } public void setDelegate(Classifier<C, T> delegate) { this.classifier = delegate; this.invoker = null; } /** * Search for the {@link org.springframework.classify.annotation.Classifier * Classifier} annotation on a method in the supplied delegate and use that to create * a {@link Classifier} from the parameter type to the return type. If the annotation * is not found a unique non-void method with a single parameter will be used, if it * exists. The signature of the method cannot be checked here, so might be a runtime * exception when the method is invoked if the signature doesn't match the classifier * types. * @param delegate an object with an annotated method */ public final void setDelegate(Object delegate) {<FILL_FUNCTION_BODY>} /** * {@inheritDoc} */ @Override @SuppressWarnings("unchecked") public T classify(C classifiable) { if (this.classifier != null) { return this.classifier.classify(classifiable); } return (T) this.invoker.invokeMethod(classifiable); } }
this.classifier = null; this.invoker = MethodInvokerUtils .getMethodInvokerByAnnotation(org.springframework.classify.annotation.Classifier.class, delegate); if (this.invoker == null) { this.invoker = MethodInvokerUtils.<C, T>getMethodInvokerForSingleArgument(delegate); } Assert.state(this.invoker != null, "No single argument public method with or without " + "@Classifier was found in delegate of type " + delegate.getClass());
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<no_super_class>
spring-projects_spring-retry
spring-retry/src/main/java/org/springframework/classify/PatternMatcher.java
PatternMatcher
match
class PatternMatcher<S> { private Map<String, S> map = new HashMap<>(); private List<String> sorted = new ArrayList<>(); /** * Initialize a new {@link PatternMatcher} with a map of patterns to values * @param map a map from String patterns to values */ public PatternMatcher(Map<String, S> map) { super(); this.map = map; // Sort keys to start with the most specific this.sorted = new ArrayList<>(map.keySet()); this.sorted.sort((o1, o2) -> { String s1 = o1; // .replace('?', '{'); String s2 = o2; // .replace('*', '}'); return s2.compareTo(s1); }); } /** * Lifted from AntPathMatcher in Spring Core. Tests whether or not a string matches * against a pattern. The pattern may contain two special characters:<br> * '*' means zero or more characters<br> * '?' means one and only one character * @param pattern pattern to match against. Must not be <code>null</code>. * @param str string which must be matched against the pattern. Must not be * <code>null</code>. * @return <code>true</code> if the string matches against the pattern, or * <code>false</code> otherwise. */ public static boolean match(String pattern, String str) {<FILL_FUNCTION_BODY>} /** * <p> * This method takes a String key and a map from Strings to values of any type. During * processing, the method will identify the most specific key in the map that matches * the line. Once the correct is identified, its value is returned. Note that if the * map contains the wildcard string "*" as a key, then it will serve as the "default" * case, matching every line that does not match anything else. * * <p> * If no matching prefix is found, a {@link IllegalStateException} will be thrown. * * <p> * Null keys are not allowed in the map. * @param line An input string * @return the value whose prefix matches the given line */ public S match(String line) { S value = null; Assert.notNull(line, "A non-null key must be provided to match against."); for (String key : this.sorted) { if (PatternMatcher.match(key, line)) { value = this.map.get(key); break; } } if (value == null) { throw new IllegalStateException("Could not find a matching pattern for key=[" + line + "]"); } return value; } }
char[] patArr = pattern.toCharArray(); char[] strArr = str.toCharArray(); int patIdxStart = 0; int patIdxEnd = patArr.length - 1; int strIdxStart = 0; int strIdxEnd = strArr.length - 1; char ch; boolean containsStar = pattern.contains("*"); if (!containsStar) { // No '*'s, so we make a shortcut if (patIdxEnd != strIdxEnd) { return false; // Pattern and string do not have the same size } for (int i = 0; i <= patIdxEnd; i++) { ch = patArr[i]; if (ch != '?') { if (ch != strArr[i]) { return false;// Character mismatch } } } return true; // String matches against pattern } if (patIdxEnd == 0) { return true; // Pattern contains only '*', which matches anything } // Process characters before first star while ((ch = patArr[patIdxStart]) != '*' && strIdxStart <= strIdxEnd) { if (ch != '?') { if (ch != strArr[strIdxStart]) { return false;// Character mismatch } } patIdxStart++; strIdxStart++; } if (strIdxStart > strIdxEnd) { // All characters in the string are used. Check if only '*'s are // left in the pattern. If so, we succeeded. Otherwise failure. for (int i = patIdxStart; i <= patIdxEnd; i++) { if (patArr[i] != '*') { return false; } } return true; } // Process characters after last star while ((ch = patArr[patIdxEnd]) != '*' && strIdxStart <= strIdxEnd) { if (ch != '?') { if (ch != strArr[strIdxEnd]) { return false;// Character mismatch } } patIdxEnd--; strIdxEnd--; } if (strIdxStart > strIdxEnd) { // All characters in the string are used. Check if only '*'s are // left in the pattern. If so, we succeeded. Otherwise failure. for (int i = patIdxStart; i <= patIdxEnd; i++) { if (patArr[i] != '*') { return false; } } return true; } // process pattern between stars. padIdxStart and patIdxEnd point // always to a '*'. while (patIdxStart != patIdxEnd && strIdxStart <= strIdxEnd) { int patIdxTmp = -1; for (int i = patIdxStart + 1; i <= patIdxEnd; i++) { if (patArr[i] == '*') { patIdxTmp = i; break; } } if (patIdxTmp == patIdxStart + 1) { // Two stars next to each other, skip the first one. patIdxStart++; continue; } // Find the pattern between padIdxStart & padIdxTmp in str between // strIdxStart & strIdxEnd int patLength = (patIdxTmp - patIdxStart - 1); int strLength = (strIdxEnd - strIdxStart + 1); int foundIdx = -1; strLoop: for (int i = 0; i <= strLength - patLength; i++) { for (int j = 0; j < patLength; j++) { ch = patArr[patIdxStart + j + 1]; if (ch != '?') { if (ch != strArr[strIdxStart + i + j]) { continue strLoop; } } } foundIdx = strIdxStart + i; break; } if (foundIdx == -1) { return false; } patIdxStart = patIdxTmp; strIdxStart = foundIdx + patLength; } // All characters in the string are used. Check if only '*'s are left // in the pattern. If so, we succeeded. Otherwise failure. for (int i = patIdxStart; i <= patIdxEnd; i++) { if (patArr[i] != '*') { return false; } } return true;
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<no_super_class>