docs: 将英文文件名重命名为中文

重命名13个英文文档为中文:
- etf_pool_selection.md → ETF候选池筛选报告.md
- etf_tracking_error_calculation.md → ETF跟踪误差计算方法.md
- FLASK_SERVICE_SUMMARY.md → Flask服务总结.md
- flask_api_README.md → Flask_API接口说明.md
- cross_market_effectiveness_survey.md → 跨市场有效性调研.md
- etf_rotation_deep_analysis.md → ETF轮动深度分析.md
- etf_rotation_framework.md → ETF轮动框架.md
- momentum_rotation_survey.md → 动量轮动调研.md
- strategy_evolution_report.md → 策略演进报告.md
- universal_fetcher_*.md → 通用数据源*.md

同时更新文档内部的交叉引用链接
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# Universal Data Fetcher API 文档
## 概述
提供统一的 RESTful API 接口,支持获取各类资产的 K 线数据OHLCV
## 支持的资产类型
- **A股指数**: `000300.SH`, `399006.SZ`, `H30269.CSI`
- **A股ETF**: `510300.SH`, `159915.SZ`, `513100.SH`
- **A股股票**: `600000.SH`, `000001.SZ`
- **港股指数**: `HSI`, `HSTECH.HK`
- **美股指数**: `NDX`, `SPX`, `DJI`, `N225`, `GDAXI`
- **美股股票**: `AAPL`, `MSFT`, `GOOGL`, `AMZN`, `TSLA`
- **期货合约**: `AU.SHF`, `CU.SHF`
- **加密货币**: `BTC`, `ETH`
## 快速开始
### 1. 启动服务
```bash
# 基础启动仅支持A股
./start_flask_server.sh
# 启用 SSH 隧道(支持港美股)
./start_flask_server.sh --with-ssh
# 指定端口
./start_flask_server.sh --port 8080 --with-ssh
# 调试模式
./start_flask_server.sh --debug --with-ssh
```
### 2. 测试 API
```bash
# 健康检查
curl http://localhost:5000/health
# 获取K线数据
curl 'http://localhost:5000/api/v1/ohlcv?code=000300.SH&start=2024-01-01&end=2024-03-31'
# 批量获取
curl -X POST http://localhost:5000/api/v1/ohlcv/batch \
-H "Content-Type: application/json" \
-d '{
"codes": ["000300.SH", "NDX", "HSI"],
"start": "2024-01-01",
"end": "2024-03-31"
}'
```
## API 端点
### 1. 健康检查
```http
GET /health
```
**响应**:
```json
{
"status": "healthy",
"timestamp": "2024-01-15T10:30:00",
"ssh_configured": true
}
```
### 2. 检测资产类型
```http
GET /api/v1/asset-type?code={code}
```
**参数**:
- `code` (required): 标的代码
**响应**:
```json
{
"code": "000300.SH",
"asset_type": "china_index",
"description": "A股指数"
}
```
**示例**:
```bash
curl 'http://localhost:5000/api/v1/asset-type?code=000300.SH'
curl 'http://localhost:5000/api/v1/asset-type?code=NDX'
curl 'http://localhost:5000/api/v1/asset-type?code=BTC'
```
### 3. 获取K线数据
```http
GET /api/v1/ohlcv?code={code}&start={start}&end={end}&retry={retry}
```
**参数**:
- `code` (required): 标的代码
- `start` (optional): 开始日期,格式 `YYYY-MM-DD`默认90天前
- `end` (optional): 结束日期,格式 `YYYY-MM-DD`,默认今天
- `retry` (optional): 重试次数默认3
**响应**:
```json
{
"code": "000300.SH",
"asset_type": "china_index",
"data": [
{
"date": "2024-01-02",
"open": 3538.7244,
"high": 3542.9624,
"low": 3502.7866,
"close": 3502.7866,
"volume": 128626763.0,
"code": "000300.SH"
},
...
],
"count": 58,
"date_range": {
"start": "2024-01-02",
"end": "2024-03-29"
},
"columns": ["date", "open", "high", "low", "close", "volume", "code"]
}
```
**示例**:
```bash
# 获取沪深300指数
curl 'http://localhost:5000/api/v1/ohlcv?code=000300.SH&start=2024-01-01&end=2024-03-31'
# 获取纳斯达克100指数需要SSH隧道
curl 'http://localhost:5000/api/v1/ohlcv?code=NDX&start=2024-01-01&end=2024-03-31'
# 获取黄金期货
curl 'http://localhost:5000/api/v1/ohlcv?code=AU.SHF&start=2024-01-01&end=2024-03-31'
```
### 4. 批量获取K线数据
```http
POST /api/v1/ohlcv/batch
```
**请求体**:
```json
{
"codes": ["000300.SH", "NDX", "HSI"],
"start": "2024-01-01",
"end": "2024-03-31",
"retry": 3
}
```
**响应**:
```json
{
"results": {
"000300.SH": {
"code": "000300.SH",
"asset_type": "china_index",
"data": [...],
"count": 58,
"date_range": {...}
},
"NDX": {
"code": "NDX",
"asset_type": "us_index",
"data": [...],
"count": 61,
"date_range": {...}
},
"HSI": {
"code": "HSI",
"asset_type": "hk_index",
"error": "No data available",
"data": [],
"count": 0
}
},
"success_count": 2,
"failed_count": 1,
"total": 3,
"start": "2024-01-01",
"end": "2024-03-31"
}
```
**示例**:
```bash
curl -X POST http://localhost:5000/api/v1/ohlcv/batch \
-H "Content-Type: application/json" \
-d '{
"codes": ["000300.SH", "510300.SH", "NDX", "HSI", "AU.SHF"],
"start": "2024-01-01",
"end": "2024-03-31"
}'
```
### 5. 获取支持的代码示例
```http
GET /api/v1/supported-codes
```
**响应**:
```json
{
"china_index": {
"description": "A股指数",
"examples": ["000300.SH", "399006.SZ", "000016.SH", "H30269.CSI"]
},
"china_etf": {
"description": "A股ETF",
"examples": ["510300.SH", "159915.SZ", "510500.SH", "513100.SH"]
},
...
}
```
## Python 客户端
### 安装
```bash
pip install requests
```
### 使用示例
```python
import requests
# 基础配置
BASE_URL = "http://localhost:5000"
# 1. 健康检查
response = requests.get(f"{BASE_URL}/health")
print(response.json())
# 2. 获取单只标的
def get_ohlcv(code, start, end):
response = requests.get(
f"{BASE_URL}/api/v1/ohlcv",
params={"code": code, "start": start, "end": end}
)
return response.json()
# 获取沪深300
data = get_ohlcv("000300.SH", "2024-01-01", "2024-03-31")
print(f"获取到 {data['count']} 条数据")
# 3. 批量获取
def batch_ohlcv(codes, start, end):
response = requests.post(
f"{BASE_URL}/api/v1/ohlcv/batch",
json={"codes": codes, "start": start, "end": end}
)
return response.json()
# 批量获取
results = batch_ohlcv(
["000300.SH", "NDX", "HSI"],
"2024-01-01",
"2024-03-31"
)
for code, result in results['results'].items():
if 'error' not in result:
print(f"✓ {code}: {result['count']} 条")
else:
print(f"✗ {code}: {result['error']}")
```
## 错误处理
### 错误响应格式
```json
{
"error": "错误描述",
"code": "000300.SH",
"start": "2024-01-01",
"end": "2024-03-31"
}
```
### 常见错误码
| HTTP 状态码 | 说明 | 解决方案 |
|------------|------|---------|
| 400 | 参数错误 | 检查请求参数格式 |
| 404 | 数据不存在 | 检查代码是否正确,日期范围是否合理 |
| 500 | 服务器内部错误 | 查看服务器日志 |
### 常见错误
**1. 代码不存在**
```json
{
"error": "No data available for the specified code and date range",
"code": "INVALID",
"start": "2024-01-01",
"end": "2024-03-31"
}
```
**2. 日期格式错误**
```json
{
"error": "Invalid date format. Use YYYY-MM-DD",
"start": "2024-01-01",
"end": "2024/03/31"
}
```
**3. 缺少必需参数**
```json
{
"error": "Missing required parameter: code",
"example": "/api/v1/ohlcv?code=000300.SH&start=2024-01-01&end=2024-03-31"
}
```
## 环境配置
### 必需环境变量
```bash
# Tushare Token获取A股数据必需
export TUSHARE_TOKEN=your_token_here
```
### 可选环境变量SSH隧道
```bash
# 启用 SSH 隧道(支持港美股)
export SSH_ENABLED=true
export SSH_HOST=8.218.167.69
export SSH_PORT=22
export SSH_USERNAME=root
export SSH_KEY_PATH=hk_ecs.pem
export SSH_LOCAL_PORT=1080
```
### .env 文件示例
```env
# Tushare
TUSHARE_TOKEN=your_tushare_token_here
# SSH 隧道(可选)
SSH_ENABLED=true
SSH_HOST=8.218.167.69
SSH_PORT=22
SSH_USERNAME=root
SSH_KEY_PATH=hk_ecs.pem
SSH_LOCAL_PORT=1080
```
## 性能说明
### 响应时间
- A股数据: ~500ms/只
- 港美股数据: ~1-2s/只通过SSH隧道
- 批量获取: 并发处理,总体时间取决于最慢的数据源
### 限流说明
- Tushare: 受 API 频率限制
- YFinance: 建议添加延迟避免限流
- 批量获取: 自动添加 0.5s 延迟
## 注意事项
1. **SSH 隧道**: 获取港美股数据需要配置 SSH 隧道
2. **Tushare Token**: 获取A股数据需要有效的 Tushare Token
3. **日期范围**: 建议单次查询不超过 1 年数据
4. **网络环境**: 中国大陆直接访问 YFinance 可能受限
## 示例代码
查看完整示例:
- [Python 客户端](../examples/flask_api_client.py)
- [API 测试](../tests/test_flask_api.py)
## 更新日志
### v1.0.0 (2024-XX-XX)
- 初始版本
- 支持8种资产类型
- RESTful API 接口
- Python 客户端
- SSH 隧道支持