play7284 commited on
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12808e7
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1 Parent(s): e49a323

Update app.py

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Files changed (1) hide show
  1. app.py +20 -26
app.py CHANGED
@@ -4,7 +4,7 @@ import markdownify
4
  import readabilipy.simple_json
5
  from urllib.parse import urlparse, urlunparse
6
  from protego import Protego
7
- from typing import Tuple, Annotated # 导入 Annotated
8
 
9
  # 定义用户代理
10
  DEFAULT_USER_AGENT = "Gradio Fetch App/1.0 (https://gradio.app)"
@@ -12,25 +12,21 @@ DEFAULT_USER_AGENT = "Gradio Fetch App/1.0 (https://gradio.app)"
12
  # --- 核心功能函数 (未改变) ---
13
  # ... (extract_content_from_html, get_robots_txt_url, check_can_fetch 函数保持不变) ...
14
  def extract_content_from_html(html: str) -> str:
15
- """从HTML中提取主要内容并转换为Markdown。"""
16
  try:
17
  ret = readabilipy.simple_json.simple_json_from_html_string(html, use_readability=True)
18
  if not ret or not ret.get("content"):
19
  return "页面简化失败:无法从HTML中提取主要内容。"
20
-
21
  content = markdownify.markdownify(ret["content"], heading_style=markdownify.ATX)
22
  return content if content.strip() else "页面简化后内容为空。"
23
  except Exception as e:
24
  return f"处理HTML时出错: {e}"
25
 
26
  def get_robots_txt_url(url: str) -> str:
27
- """根据给定的URL获取robots.txt的地址。"""
28
  parsed = urlparse(url)
29
  robots_url = urlunparse((parsed.scheme, parsed.netloc, "/robots.txt", "", "", ""))
30
  return robots_url
31
 
32
  def check_can_fetch(url: str, user_agent: str) -> Tuple[bool, str]:
33
- """检查 robots.txt 是否允许抓取。返回一个元组 (是否允许, 消息)。"""
34
  robots_url = get_robots_txt_url(url)
35
  try:
36
  response = requests.get(robots_url, headers={"User-Agent": user_agent}, timeout=5)
@@ -43,51 +39,54 @@ def check_can_fetch(url: str, user_agent: str) -> Tuple[bool, str]:
43
  except requests.exceptions.RequestException as e:
44
  return True, f"检查 {robots_url} 时发生网络错误: {e},将继续尝试抓取。"
45
 
46
-
47
- # --- 主处理函数 (已添加详细描述) ---
48
  def fetch_and_process_url(
49
- url: Annotated[str, "需要抓取的完整网址,必须以 http:// 或 https:// 开头。"],
50
- ignore_robots: Annotated[bool, "是否忽略目标网站的 robots.txt 文件中的抓取限制。"],
51
- force_raw: Annotated[bool, "是否返回未经简化的原始HTML内容,而不是提取后的Markdown文本。"],
52
- max_length: Annotated[int, "返回内容的最大字符数。用于处理超长页面。"],
53
- start_index: Annotated[int, "从内容的哪个字符位置开始返回。用于分页获取超长内容。"]
54
  ) -> str:
55
- """
56
- 抓取并处理指定URL的网页内容。
57
 
58
  此函数会访问一个网页,智能地提取其主要正文内容,并将其转换为简洁的Markdown格式。
59
  它还能处理robots.txt规则、内容截断和返回原始HTML等高级功能。
 
 
 
 
 
 
 
 
 
 
60
  """
61
  if not url or not url.strip().startswith(('http://', 'https://')):
62
  return "请输入一个有效的URL (以 http:// 或 https:// 开头)。"
63
 
 
64
  url = url.strip()
65
  user_agent = DEFAULT_USER_AGENT
66
-
67
  if not ignore_robots:
68
  can_fetch, message = check_can_fetch(url, user_agent)
69
  if not can_fetch:
70
  return message
71
-
72
  try:
73
  response = requests.get(url, headers={"User-Agent": user_agent}, timeout=30, allow_redirects=True)
74
  response.raise_for_status()
75
  except requests.exceptions.RequestException as e:
76
  return f"抓取URL时发生网络错误: {e}"
77
-
78
  page_raw = response.text
79
  content_type = response.headers.get("content-type", "").lower()
80
-
81
  is_html = "text/html" in content_type
82
  prefix = ""
83
-
84
  if is_html and not force_raw:
85
  content = extract_content_from_html(page_raw)
86
  else:
87
  content = page_raw
88
  if not is_html:
89
  prefix = f"**注意**: 内容类型是 `{content_type}`,已显示为原始内容。\n\n---\n\n"
90
-
91
  original_length = len(content)
92
  if start_index >= original_length:
93
  content_to_show = "错误:起始索引超出了内容总长度。"
@@ -104,18 +103,16 @@ def fetch_and_process_url(
104
  f"要获取更多内容,请将**起始索引**设置为 **{next_start}** 再试。"
105
  )
106
  content_to_show += truncation_message
107
-
108
  return prefix + content_to_show
109
 
 
110
  # --- Gradio 界面定义 (未改变) ---
111
  with gr.Blocks(theme=gr.themes.Soft()) as app:
112
  gr.Markdown("# 网页内容抓取与简化工具")
113
  gr.Markdown("输入一个网址,工具会抓取其内容,并默认提取正文转换为Markdown格式。")
114
-
115
  with gr.Row():
116
  url_input = gr.Textbox(label="URL", placeholder="例如: https://www.google.com/about", scale=4)
117
  fetch_button = gr.Button("抓取内容", variant="primary", scale=1)
118
-
119
  with gr.Accordion("高级选项", open=False):
120
  with gr.Row():
121
  ignore_robots_checkbox = gr.Checkbox(label="忽略 robots.txt 限制", value=False)
@@ -123,9 +120,7 @@ with gr.Blocks(theme=gr.themes.Soft()) as app:
123
  with gr.Row():
124
  max_length_slider = gr.Slider(minimum=500, maximum=50000, value=8000, step=500, label="返回内容的最大长度 (字符数)")
125
  start_index_number = gr.Number(label="起始索引", value=0)
126
-
127
  output_markdown = gr.Markdown(label="抓取结果")
128
-
129
  fetch_button.click(
130
  fn=fetch_and_process_url,
131
  inputs=[url_input, ignore_robots_checkbox, raw_checkbox, max_length_slider, start_index_number],
@@ -133,5 +128,4 @@ with gr.Blocks(theme=gr.themes.Soft()) as app:
133
  )
134
 
135
  if __name__ == "__main__":
136
- # 启动时加上 mcp_server=True
137
  app.launch(mcp_server=True)
 
4
  import readabilipy.simple_json
5
  from urllib.parse import urlparse, urlunparse
6
  from protego import Protego
7
+ from typing import Tuple
8
 
9
  # 定义用户代理
10
  DEFAULT_USER_AGENT = "Gradio Fetch App/1.0 (https://gradio.app)"
 
12
  # --- 核心功能函数 (未改变) ---
13
  # ... (extract_content_from_html, get_robots_txt_url, check_can_fetch 函数保持不变) ...
14
  def extract_content_from_html(html: str) -> str:
 
15
  try:
16
  ret = readabilipy.simple_json.simple_json_from_html_string(html, use_readability=True)
17
  if not ret or not ret.get("content"):
18
  return "页面简化失败:无法从HTML中提取主要内容。"
 
19
  content = markdownify.markdownify(ret["content"], heading_style=markdownify.ATX)
20
  return content if content.strip() else "页面简化后内容为空。"
21
  except Exception as e:
22
  return f"处理HTML时出错: {e}"
23
 
24
  def get_robots_txt_url(url: str) -> str:
 
25
  parsed = urlparse(url)
26
  robots_url = urlunparse((parsed.scheme, parsed.netloc, "/robots.txt", "", "", ""))
27
  return robots_url
28
 
29
  def check_can_fetch(url: str, user_agent: str) -> Tuple[bool, str]:
 
30
  robots_url = get_robots_txt_url(url)
31
  try:
32
  response = requests.get(robots_url, headers={"User-Agent": user_agent}, timeout=5)
 
39
  except requests.exceptions.RequestException as e:
40
  return True, f"检查 {robots_url} 时发生网络错误: {e},将继续尝试抓取。"
41
 
42
+ # --- 主处理函数 (使用 Google 风格 Docstring) ---
 
43
  def fetch_and_process_url(
44
+ url: str,
45
+ ignore_robots: bool,
46
+ force_raw: bool,
47
+ max_length: int,
48
+ start_index: int
49
  ) -> str:
50
+ """抓取并处理指定URL的网页内容。
 
51
 
52
  此函数会访问一个网页,智能地提取其主要正文内容,并将其转换为简洁的Markdown格式。
53
  它还能处理robots.txt规则、内容截断和返回原始HTML等高级功能。
54
+
55
+ Args:
56
+ url (str): 需要抓取的完整网址,必须以 http:// 或 https:// 开头。
57
+ ignore_robots (bool): 是否忽略目标网站的 robots.txt 文件中的抓取限制。
58
+ force_raw (bool): 是否返回未经简化的原始HTML内容,而不是提取后的Markdown文本。
59
+ max_length (int): 返回内容的最大字符数。用于处理超长页面。
60
+ start_index (int): 从内容的哪个字符位置开始返回。用于分页获取超长内容。
61
+
62
+ Returns:
63
+ str: 处理后的网页内容或错误信息。
64
  """
65
  if not url or not url.strip().startswith(('http://', 'https://')):
66
  return "请输入一个有效的URL (以 http:// 或 https:// 开头)。"
67
 
68
+ # ... 函数的其余部分代码保持不变 ...
69
  url = url.strip()
70
  user_agent = DEFAULT_USER_AGENT
 
71
  if not ignore_robots:
72
  can_fetch, message = check_can_fetch(url, user_agent)
73
  if not can_fetch:
74
  return message
 
75
  try:
76
  response = requests.get(url, headers={"User-Agent": user_agent}, timeout=30, allow_redirects=True)
77
  response.raise_for_status()
78
  except requests.exceptions.RequestException as e:
79
  return f"抓取URL时发生网络错误: {e}"
 
80
  page_raw = response.text
81
  content_type = response.headers.get("content-type", "").lower()
 
82
  is_html = "text/html" in content_type
83
  prefix = ""
 
84
  if is_html and not force_raw:
85
  content = extract_content_from_html(page_raw)
86
  else:
87
  content = page_raw
88
  if not is_html:
89
  prefix = f"**注意**: 内容类型是 `{content_type}`,已显示为原始内容。\n\n---\n\n"
 
90
  original_length = len(content)
91
  if start_index >= original_length:
92
  content_to_show = "错误:起始索引超出了内容总长度。"
 
103
  f"要获取更多内容,请将**起始索引**设置为 **{next_start}** 再试。"
104
  )
105
  content_to_show += truncation_message
 
106
  return prefix + content_to_show
107
 
108
+
109
  # --- Gradio 界面定义 (未改变) ---
110
  with gr.Blocks(theme=gr.themes.Soft()) as app:
111
  gr.Markdown("# 网页内容抓取与简化工具")
112
  gr.Markdown("输入一个网址,工具会抓取其内容,并默认提取正文转换为Markdown格式。")
 
113
  with gr.Row():
114
  url_input = gr.Textbox(label="URL", placeholder="例如: https://www.google.com/about", scale=4)
115
  fetch_button = gr.Button("抓取内容", variant="primary", scale=1)
 
116
  with gr.Accordion("高级选项", open=False):
117
  with gr.Row():
118
  ignore_robots_checkbox = gr.Checkbox(label="忽略 robots.txt 限制", value=False)
 
120
  with gr.Row():
121
  max_length_slider = gr.Slider(minimum=500, maximum=50000, value=8000, step=500, label="返回内容的最大长度 (字符数)")
122
  start_index_number = gr.Number(label="起始索引", value=0)
 
123
  output_markdown = gr.Markdown(label="抓取结果")
 
124
  fetch_button.click(
125
  fn=fetch_and_process_url,
126
  inputs=[url_input, ignore_robots_checkbox, raw_checkbox, max_length_slider, start_index_number],
 
128
  )
129
 
130
  if __name__ == "__main__":
 
131
  app.launch(mcp_server=True)