docs/zh/essentials/code.mdx

---
title: '代码块'
description: 'MCPHub 文档中代码块的编写和展示指南'
---

## 内联代码

在 MCPHub 文档中使用内联代码来标记命令、配置键、文件名或短代码片段：

```md
使用 `mcphub start` 命令启动服务器，配置 `MCPHUB_PORT` 环境变量。
```

使用 `mcphub start` 命令启动服务器，配置 `MCPHUB_PORT` 环境变量。

## 代码块语法

### 基本代码块

MCPHub 支持多种编程语言的语法高亮：

````md
```javascript
// JavaScript 示例
const mcpClient = new MCPClient({
  endpoint: process.env.MCPHUB_ENDPOINT,
  apiKey: process.env.MCPHUB_API_KEY,
});
```
````

```javascript
// JavaScript 示例
const mcpClient = new MCPClient({
  endpoint: process.env.MCPHUB_ENDPOINT,
  apiKey: process.env.MCPHUB_API_KEY,
});
```

### TypeScript 代码

````md
```typescript
interface MCPServerConfig {
  id: string;
  name: string;
  endpoint: string;
  capabilities: string[];
  metadata?: Record<string, any>;
}

class MCPServer implements MCPServerConfig {
  constructor(
    public id: string,
    public name: string,
    public endpoint: string,
    public capabilities: string[],
  ) {}
}
```
````

```typescript
interface MCPServerConfig {
  id: string;
  name: string;
  endpoint: string;
  capabilities: string[];
  metadata?: Record<string, any>;
}

class MCPServer implements MCPServerConfig {
  constructor(
    public id: string,
    public name: string,
    public endpoint: string,
    public capabilities: string[],
  ) {}
}
```

### Python 代码

````md
```python
import requests
from typing import Dict, List, Optional

class MCPHubClient:
    def __init__(self, endpoint: str, api_key: str):
        self.endpoint = endpoint
        self.api_key = api_key
        self.headers = {
            'Authorization': f'Bearer {api_key}',
            'Content-Type': 'application/json'
        }

    def create_server(self, config: Dict) -> Dict:
        response = requests.post(
            f'{self.endpoint}/api/servers',
            json=config,
            headers=self.headers
        )
        return response.json()
```
````

```python
import requests
from typing import Dict, List, Optional

class MCPHubClient:
    def __init__(self, endpoint: str, api_key: str):
        self.endpoint = endpoint
        self.api_key = api_key
        self.headers = {
            'Authorization': f'Bearer {api_key}',
            'Content-Type': 'application/json'
        }

    def create_server(self, config: Dict) -> Dict:
        response = requests.post(
            f'{self.endpoint}/api/servers',
            json=config,
            headers=self.headers
        )
        return response.json()
```

## 配置文件

### YAML 配置

````md
```yaml title="mcphub.yml"
server:
  port: 3000
  host: 0.0.0.0

database:
  type: postgresql
  host: localhost
  port: 5432
  database: mcphub
  username: mcphub_user
  password: secure_password

mcp:
  servers:
    - id: ai-assistant
      name: AI Assistant Server
      endpoint: https://ai.example.com
      capabilities:
        - chat
        - completion
    - id: data-processor
      name: Data Processing Server
      endpoint: https://data.example.com
      capabilities:
        - analysis
        - transformation

routing:
  strategy: round_robin
  health_check:
    enabled: true
    interval: 30s
    timeout: 5s

logging:
  level: info
  format: json
  file: /var/log/mcphub/app.log
```
````

```yaml title="mcphub.yml"
server:
  port: 3000
  host: 0.0.0.0

database:
  type: postgresql
  host: localhost
  port: 5432
  database: mcphub
  username: mcphub_user
  password: secure_password

mcp:
  servers:
    - id: ai-assistant
      name: AI Assistant Server
      endpoint: https://ai.example.com
      capabilities:
        - chat
        - completion
    - id: data-processor
      name: Data Processing Server
      endpoint: https://data.example.com
      capabilities:
        - analysis
        - transformation

routing:
  strategy: round_robin
  health_check:
    enabled: true
    interval: 30s
    timeout: 5s

logging:
  level: info
  format: json
  file: /var/log/mcphub/app.log
```

### JSON 配置

````md
```json title="package.json"
{
  "name": "@mcphub/server",
  "version": "2.1.0",
  "description": "Model Context Protocol Hub Server",
  "main": "dist/index.js",
  "scripts": {
    "start": "node dist/index.js",
    "dev": "tsx watch src/index.ts",
    "build": "tsc",
    "test": "jest",
    "test:watch": "jest --watch",
    "lint": "eslint src/**/*.ts",
    "migrate": "prisma migrate deploy"
  },
  "dependencies": {
    "@prisma/client": "^5.7.0",
    "express": "^4.18.2",
    "helmet": "^7.1.0",
    "cors": "^2.8.5",
    "jsonwebtoken": "^9.0.2",
    "bcryptjs": "^2.4.3",
    "winston": "^3.11.0"
  },
  "devDependencies": {
    "@types/node": "^20.10.0",
    "@types/express": "^4.17.21",
    "typescript": "^5.3.0",
    "tsx": "^4.6.0",
    "jest": "^29.7.0",
    "eslint": "^8.55.0"
  }
}
```
````

```json title="package.json"
{
  "name": "@mcphub/server",
  "version": "2.1.0",
  "description": "Model Context Protocol Hub Server",
  "main": "dist/index.js",
  "scripts": {
    "start": "node dist/index.js",
    "dev": "tsx watch src/index.ts",
    "build": "tsc",
    "test": "jest",
    "test:watch": "jest --watch",
    "lint": "eslint src/**/*.ts",
    "migrate": "prisma migrate deploy"
  },
  "dependencies": {
    "@prisma/client": "^5.7.0",
    "express": "^4.18.2",
    "helmet": "^7.1.0",
    "cors": "^2.8.5",
    "jsonwebtoken": "^9.0.2",
    "bcryptjs": "^2.4.3",
    "winston": "^3.11.0"
  },
  "devDependencies": {
    "@types/node": "^20.10.0",
    "@types/express": "^4.17.21",
    "typescript": "^5.3.0",
    "tsx": "^4.6.0",
    "jest": "^29.7.0",
    "eslint": "^8.55.0"
  }
}
```

### Docker 配置

````md
```dockerfile title="Dockerfile"
FROM node:18-alpine AS builder

WORKDIR /app

# 复制依赖文件
COPY package*.json ./
COPY tsconfig.json ./

# 安装依赖
RUN npm ci --only=production

# 复制源码
COPY src/ ./src/

# 构建应用
RUN npm run build

# 生产环境镜像
FROM node:18-alpine AS production

WORKDIR /app

# 创建非 root 用户
RUN addgroup -g 1001 -S nodejs
RUN adduser -S mcphub -u 1001

# 复制构建产物
COPY --from=builder /app/dist ./dist
COPY --from=builder /app/node_modules ./node_modules
COPY --from=builder /app/package*.json ./

# 设置权限
USER mcphub

# 健康检查
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD node dist/health-check.js

EXPOSE 3000

CMD ["node", "dist/index.js"]
```
````

```dockerfile title="Dockerfile"
FROM node:18-alpine AS builder

WORKDIR /app

# 复制依赖文件
COPY package*.json ./
COPY tsconfig.json ./

# 安装依赖
RUN npm ci --only=production

# 复制源码
COPY src/ ./src/

# 构建应用
RUN npm run build

# 生产环境镜像
FROM node:18-alpine AS production

WORKDIR /app

# 创建非 root 用户
RUN addgroup -g 1001 -S nodejs
RUN adduser -S mcphub -u 1001

# 复制构建产物
COPY --from=builder /app/dist ./dist
COPY --from=builder /app/node_modules ./node_modules
COPY --from=builder /app/package*.json ./

# 设置权限
USER mcphub

# 健康检查
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD node dist/health-check.js

EXPOSE 3000

CMD ["node", "dist/index.js"]
```

## 终端命令

### Bash/Shell 命令

````md
```bash
# 克隆 MCPHub 仓库
git clone https://github.com/mcphub/mcphub.git
cd mcphub

# 安装依赖
npm install

# 复制环境变量文件
cp .env.example .env

# 设置数据库
npm run db:setup

# 启动开发服务器
npm run dev

# 构建生产版本
npm run build

# 启动生产服务器
npm start
```
````

```bash
# 克隆 MCPHub 仓库
git clone https://github.com/mcphub/mcphub.git
cd mcphub

# 安装依赖
npm install

# 复制环境变量文件
cp .env.example .env

# 设置数据库
npm run db:setup

# 启动开发服务器
npm run dev

# 构建生产版本
npm run build

# 启动生产服务器
npm start
```

### PowerShell 命令

````md
```powershell
# Windows PowerShell 安装步骤
# 克隆仓库
git clone https://github.com/mcphub/mcphub.git
Set-Location mcphub

# 安装 Node.js 依赖
npm install

# 复制环境变量文件
Copy-Item .env.example .env

# 启动开发服务器
npm run dev
```
````

```powershell
# Windows PowerShell 安装步骤
# 克隆仓库
git clone https://github.com/mcphub/mcphub.git
Set-Location mcphub

# 安装 Node.js 依赖
npm install

# 复制环境变量文件
Copy-Item .env.example .env

# 启动开发服务器
npm run dev
```

### Docker 命令

````md
```bash
# 使用 Docker 运行 MCPHub
docker run -d \
  --name mcphub \
  -p 3000:3000 \
  -e NODE_ENV=production \
  -e DATABASE_URL=postgresql://user:pass@host:5432/mcphub \
  -e JWT_SECRET=your-secret-key \
  mcphub/server:latest

# 查看日志
docker logs mcphub

# 进入容器
docker exec -it mcphub sh

# 停止容器
docker stop mcphub

# 使用 Docker Compose
docker-compose up -d
```
````

```bash
# 使用 Docker 运行 MCPHub
docker run -d \
  --name mcphub \
  -p 3000:3000 \
  -e NODE_ENV=production \
  -e DATABASE_URL=postgresql://user:pass@host:5432/mcphub \
  -e JWT_SECRET=your-secret-key \
  mcphub/server:latest

# 查看日志
docker logs mcphub

# 进入容器
docker exec -it mcphub sh

# 停止容器
docker stop mcphub

# 使用 Docker Compose
docker-compose up -d
```

## API 请求示例

### cURL 命令

````md
```bash
# 创建新的 MCP 服务器
curl -X POST https://api.mcphub.io/api/servers \
  -H "Authorization: Bearer YOUR_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "AI Assistant Server",
    "endpoint": "https://ai.example.com",
    "capabilities": ["chat", "completion"],
    "groupId": "production"
  }'

# 获取服务器列表
curl -X GET "https://api.mcphub.io/api/servers?limit=10&active=true" \
  -H "Authorization: Bearer YOUR_API_TOKEN"

# 更新服务器配置
curl -X PUT https://api.mcphub.io/api/servers/server-123 \
  -H "Authorization: Bearer YOUR_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Updated AI Assistant",
    "active": true
  }'

# 删除服务器
curl -X DELETE https://api.mcphub.io/api/servers/server-123 \
  -H "Authorization: Bearer YOUR_API_TOKEN"
```
````

```bash
# 创建新的 MCP 服务器
curl -X POST https://api.mcphub.io/api/servers \
  -H "Authorization: Bearer YOUR_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "AI Assistant Server",
    "endpoint": "https://ai.example.com",
    "capabilities": ["chat", "completion"],
    "groupId": "production"
  }'

# 获取服务器列表
curl -X GET "https://api.mcphub.io/api/servers?limit=10&active=true" \
  -H "Authorization: Bearer YOUR_API_TOKEN"

# 更新服务器配置
curl -X PUT https://api.mcphub.io/api/servers/server-123 \
  -H "Authorization: Bearer YOUR_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Updated AI Assistant",
    "active": true
  }'

# 删除服务器
curl -X DELETE https://api.mcphub.io/api/servers/server-123 \
  -H "Authorization: Bearer YOUR_API_TOKEN"
```

### HTTP 请求示例

````md
```http
POST /api/servers HTTP/1.1
Host: api.mcphub.io
Authorization: Bearer YOUR_API_TOKEN
Content-Type: application/json

{
  "name": "AI Assistant Server",
  "endpoint": "https://ai.example.com",
  "capabilities": ["chat", "completion"],
  "groupId": "production"
}
```
````

```http
POST /api/servers HTTP/1.1
Host: api.mcphub.io
Authorization: Bearer YOUR_API_TOKEN
Content-Type: application/json

{
  "name": "AI Assistant Server",
  "endpoint": "https://ai.example.com",
  "capabilities": ["chat", "completion"],
  "groupId": "production"
}
```

## 数据库查询

### SQL 查询

````md
```sql
-- 查询活跃的 MCP 服务器
SELECT
  id,
  name,
  endpoint,
  status,
  created_at
FROM mcp_servers
WHERE status = 'active'
ORDER BY created_at DESC;

-- 统计每个组的服务器数量
SELECT
  g.name as group_name,
  COUNT(s.id) as server_count
FROM server_groups g
LEFT JOIN mcp_servers s ON g.id = s.group_id
GROUP BY g.id, g.name
ORDER BY server_count DESC;

-- 查询最近的错误日志
SELECT
  timestamp,
  level,
  message,
  metadata
FROM logs
WHERE level = 'error'
  AND timestamp >= NOW() - INTERVAL '1 hour'
ORDER BY timestamp DESC
LIMIT 50;
```
````

```sql
-- 查询活跃的 MCP 服务器
SELECT
  id,
  name,
  endpoint,
  status,
  created_at
FROM mcp_servers
WHERE status = 'active'
ORDER BY created_at DESC;

-- 统计每个组的服务器数量
SELECT
  g.name as group_name,
  COUNT(s.id) as server_count
FROM server_groups g
LEFT JOIN mcp_servers s ON g.id = s.group_id
GROUP BY g.id, g.name
ORDER BY server_count DESC;

-- 查询最近的错误日志
SELECT
  timestamp,
  level,
  message,
  metadata
FROM logs
WHERE level = 'error'
  AND timestamp >= NOW() - INTERVAL '1 hour'
ORDER BY timestamp DESC
LIMIT 50;
```

## 代码块最佳实践

### 1. 语言标识

始终为代码块指定正确的语言：

````md
````javascript // ✅ 正确
```js         // ✅ 也可以
```; // ❌ 避免无语言标识
````
````

### 2. 文件名标题

为配置文件和示例添加文件名：

````md
```yaml title="docker-compose.yml"
version: '3.8'
services:
  mcphub:
    image: mcphub/server:latest
```
````

### 3. 突出显示重要行

使用行号高亮重要代码：

````md
```javascript {3,7-9}
const express = require('express');
const app = express();
const port = process.env.PORT || 3000; // 重要：端口配置

app.get('/health', (req, res) => {
  res.json({ status: 'ok' });
});
app.listen(port, () => {
  // 重要：服务器启动
  console.log(`Server running on port ${port}`);
}); // 重要：结束
```
````

### 4. 代码注释

添加有意义的中文注释：

```javascript
// 初始化 MCPHub 客户端
const client = new MCPHubClient({
  endpoint: 'https://api.mcphub.io',
  apiKey: process.env.API_KEY,
  timeout: 30000, // 30 秒超时
  retries: 3, // 重试 3 次
});

// 配置路由策略
client.setRoutingStrategy({
  type: 'weighted', // 加权轮询
  healthCheck: true, // 启用健康检查
  fallback: 'round_robin', // 降级策略
});
```

### 5. 错误处理示例

展示完整的错误处理：

```javascript
try {
  const server = await mcpClient.createServer({
    name: 'AI Assistant',
    endpoint: 'https://ai.example.com',
  });

  console.log('服务器创建成功:', server.id);
} catch (error) {
  if (error.code === 'DUPLICATE_SERVER') {
    console.log('服务器已存在，跳过创建');
  } else if (error.code === 'INVALID_ENDPOINT') {
    console.error('无效的端点地址:', error.message);
  } else {
    console.error('创建失败:', error.message);
    throw error; // 重新抛出未知错误
  }
}
```

## 支持的语言

MCPHub 文档支持以下编程语言的语法高亮：

- **JavaScript/TypeScript**: `javascript`, `js`, `typescript`, `ts`
- **Python**: `python`, `py`
- **Shell/Bash**: `bash`, `shell`, `sh`
- **PowerShell**: `powershell`, `ps1`
- **SQL**: `sql`, `postgresql`, `mysql`
- **YAML**: `yaml`, `yml`
- **JSON**: `json`
- **XML**: `xml`
- **HTML**: `html`
- **CSS**: `css`
- **Dockerfile**: `dockerfile`
- **Go**: `go`
- **Rust**: `rust`
- **Java**: `java`
- **C#**: `csharp`, `cs`
- **PHP**: `php`
- **Ruby**: `ruby`
- **HTTP**: `http`
- **Markdown**: `markdown`, `md`

`````

### 使用三个反引号

````md
```javascript
console.log('Hello World');
`````

`````

### 语法高亮

我们使用 [Prism](https://prismjs.com/) 来语法高亮显示。Prism 支持 [各种编程语言](https://prismjs.com/#supported-languages)。

要添加语法高亮显示，请在代码块的第一行指定语言。

````md
```python
def hello():
    print("Hello World")
```
`````

```python
def hello():
    print("Hello World")
```

## 代码组

<CodeGroup>

```bash npm
npm i mintlify
```

```bash yarn
yarn add mintlify
```

```bash pnpm
pnpm add mintlify
```

</CodeGroup>

`CodeGroup` 允许您将多个代码块组合在一起，并为它们提供选项卡。

````md
<CodeGroup>

```bash npm
npm i mintlify
```

```bash yarn
yarn add mintlify
```

```bash pnpm
pnpm add mintlify
```

</CodeGroup>
````

### 代码标题

您也可以为代码块设置标题：

```javascript hello.js
const hello = 'world';
console.log(hello);
```

````md
```javascript hello.js
const hello = 'world';
console.log(hello);
```
````