78 lines
2.1 KiB
Markdown
78 lines
2.1 KiB
Markdown
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# Crawl4AI 人民网新闻爬虫
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使用 Crawl4AI 框架爬取人民网新闻,支持使用本地 Chrome 浏览器。
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## 安装依赖
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```bash
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pip install crawl4ai playwright
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playwright install chromium # 或者使用本地 Chrome
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```
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## 使用方法
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### 基本使用
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```bash
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# 使用默认配置(自动使用本地 Chrome)
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python crawl4ai/main.py [category] [limit] [output_file]
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# 示例
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python crawl4ai/main.py politics 20 output/news.json
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```
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### 指定 Chrome 路径
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```bash
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# 指定 Chrome 可执行文件路径
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python crawl4ai/main.py politics 20 output/news.json "C:\Program Files\Google\Chrome\Application\chrome.exe"
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```
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### 在代码中使用
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```python
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import asyncio
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from crawl4ai.PeopleNetCrewer import PeopleNetCrewer
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async def main():
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# 使用默认 Chrome(自动检测)
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crewer = PeopleNetCrewer()
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# 或者指定 Chrome 路径
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# crewer = PeopleNetCrewer(chrome_path="C:\\Program Files\\Google\\Chrome\\Application\\chrome.exe")
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news_list = await crewer.crawl(category="politics", limit=20)
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for news in news_list:
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print(f"标题: {news.title}")
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print(f"链接: {news.url}")
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print("-" * 50)
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await crewer.close()
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if __name__ == "__main__":
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asyncio.run(main())
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```
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## 配置说明
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### 使用本地 Chrome
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代码会自动尝试使用本地安装的 Chrome 浏览器。如果未指定 `chrome_path`,会通过 `channel="chrome"` 参数使用系统默认的 Chrome。
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### 浏览器配置
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在 `PeopleNetCrewer` 类中,可以通过修改 `_get_crawler` 方法中的 `browser_config` 来调整浏览器行为:
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- `headless`: 是否无头模式(默认 True)
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- `verbose`: 是否显示详细日志(默认 False)
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- `channel`: 浏览器通道("chrome" 表示使用本地 Chrome)
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- `executable_path`: 指定浏览器可执行文件路径
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## 注意事项
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1. 确保已安装 Chrome 浏览器
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2. 如果遇到 Playwright 浏览器未找到的错误,可以运行 `playwright install chromium` 安装 Playwright 自带的浏览器
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3. 使用本地 Chrome 时,确保 Chrome 版本与 Playwright 兼容
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