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README
Apache-2.0

learn-spider

介绍

  • 使用该工程快速下载某些网站的视频、图片等。
  • 掌握爬虫思路,并总结一个通用可扩展的企业级爬虫流程。
  • 学习批量爬取的分组、监控、重试、监控,任务状态记录、合并等。

示例页面 demo.png

m3u8视频下载进度 progress.png

监控页面 app_overview.png

overview.png

task.png

使用说明

  1. git clone https://gitee.com/ChinaLym/learn-spider
  2. 本地运行

该工程内置功能以及建议学习顺序

功能 场景举例 适合熟练度
下载新闻网站内容 下载文字处理和神经网络模型的训练等 入门
下载问答类网站内容 AI人工智能大模型训练、知识图谱索引等 初级
下载图片音频、以及复杂的 m3u8 视频 AI人工智能大模型训练、知识图谱索引等 进阶

其他高级技术:

  • 登录模拟、会话保持、多线程下载、断点续传、流量控制、代理伪装、异常自动熔断、任务自动恢复、周期调度、增量爬取等能力
  • 自适应的多级代理池,并自动汇聚多个公开代理网站数据
  • 利用代理池,多线程,分布式离线下载技术,自建高速的文件(网盘)下载工具

爬虫流程

将一次请求数据的行为视为爬虫任务(SpiderTask)

  • 那么一次爬虫流程就可以认为是:
    1. 创建爬虫任务(SpiderTask),放到爬虫队列(SpiderTaskQueue)
    2. (调度器)从爬虫队列中取出任务交给爬虫( Spider )并拿到响应结果(Result)
    3. (调度器)将响应结果交给结果处理器(ResultHandler)处理这个 Result 完成这个任务

爬虫流程

  • 其中,爬虫爬取和处理器处理较为耗时,使用多线程进行,详细流程参见如图

代理池

爬虫流程

结果存储

  • 离线存储(后续会离线处理)
  • 消息(需要实时解析的)
  • OSS(附件单独存)

爬虫注意点(遵循所在国家法律法规)

  1. 不得侵入国家事务、国防建设、尖端科学技术领域网站,不得爬取个人信息以及非公开数据。
  2. 不得采取逆向暴力破解等技术手段。
  3. 不得妨碍目标网站正常运行,不得超过目标网站日均流量的三分之一。

参考

ip代理池 https://cloud.tencent.com/developer/article/1666217

扩展:其他开源项目模型命名(选读,便于理解爬虫框架设计者们的共同思想)

  • 待下载任务:SpiderTask、Seed
  • 下载/抓取/发请求:Spider、Downloader
  • 调度、任务管理:Scheduler、TaskManager
  • 页面处理:Extractor、PageProcessor、Analyzer、Parser
  • 结果处理:Pipeline、Handler
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简介

学习Java爬虫,并总结一个简单的分布式爬虫框架( spider-cluster是集群、 spider-distributed-xxx是分布式) 展开 收起
Java 等 3 种语言
Apache-2.0
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