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spider's Introduction

Spider

本仓库计划用于记录爬虫相关实践。

爬虫难点及解决方案

网站采取反爬策略

  • 模拟浏览器行为。

网站模板定期改动

  • 不同配置文件配置不同网站的模板规则。
  • 数据库存储不同网站的模板规则。

网站 URL 抓取失败

  • HttpClient 默认处理方式。
  • Storm 实时解析失败日志,将失败 URL 重新加入爬取仓库,一般超过 3 次就放弃。

网站频繁抓取导致 IP 被封

  • 购买代理 IP 库,随机获取 IP 抓取数据。
  • 部署多个应用分别抓取,降低单节点访问频率。
  • 设置每个页面抓取时间间隔,降低被封概率。

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Contributors

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