基础爬虫框架

openclaw openclaw解答 2026-04-09 1

我来介绍一下OpenClaw的精简版实现思路：

基础爬虫框架-第1张图片-官方openclaw下载|openclaw官网-国内ai小龙虾下载

OpenClaw 精简版核心功能

核心模块精简

    def __init__(self):
        self.requests_session = None
        self.parser = None
    def fetch(self, url):
        """基础请求功能"""
        pass
    def parse(self, html):
        """基础解析功能"""
        pass

精简特性

✅ 去分布式，单机运行
✅ 简化任务调度
✅ 移除复杂配置
✅ 基础数据存储（JSON/CSV）
✅ 基本的反爬虫策略

基础实现示例

import requests
from bs4 import BeautifulSoup
import json
import time
class MiniClaw:
    def __init__(self, user_agent=None, delay=1):
        self.session = requests.Session()
        self.delay = delay
        self.user_agent = user_agent or 'Mozilla/5.0'
    def crawl(self, url, parser_func):
        """基础爬取方法"""
        headers = {'User-Agent': self.user_agent}
        try:
            time.sleep(self.delay)  # 延迟避免封禁
            response = self.session.get(url, headers=headers)
            response.raise_for_status()
            return parser_func(response.text)
        except Exception as e:
            print(f"Error crawling {url}: {e}")
            return None
    def save_json(self, data, filename):
        """保存数据到JSON"""
        with open(filename, 'w', encoding='utf-8') as f:
            json.dump(data, f, ensure_ascii=False, indent=2)

使用示例

def parse_example(html):
    """自定义解析函数"""
    soup = BeautifulSoup(html, 'html.parser')
    results = []
    for item in soup.select('.article'):
        title = item.select_one('h2').text.strip()
        link = item.select_one('a')['href']
        results.append({
            'title': title,
            'url': link
        })
    return results
# 使用
claw = MiniClaw(delay=2)
data = claw.crawl('http://example.com', parse_example)
claw.save_json(data, 'results.json')