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Apache-2.0

learn-spider

介绍

学习Java爬虫,并总结一个简单的框架

架构思想介绍

  • 把爬虫流程化,定义如下

    • 发起 http 请求,并返回响应结果
    • 处理(解析响应内容,保存等)
  • 把这一个完整的流程定义为一个爬虫任务。 SpiderTask

  • 那么进行一次爬虫就可以理解为,

    • 创建爬虫任务(SpiderTask),放到爬虫队列(SpiderTaskQueue)
    • 爬虫调度器从爬虫队列中取出任务交给爬虫( Spider )并返回响应结果(Result)
    • 交给结果处理器(ResultHandler)处理这个 Result 完成这个任务
  • 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

爬虫流程

实现功能

爬取某新闻网站,并将其保存到文件中,以供后续文字处理和神经网络模型的训练

启动时触发一次全量爬取,每天凌晨2点自动更新

在 test 包中,通过函数式编程实现爬取功能(10行代码左右)

在 java 包中,以面向对象的思想实现,并抽象出通用爬虫框架

使用说明

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

分支介绍

  • single 单体架构
  • cluster 集群/分布式架构,分为spider、handler两个应用,集群部署。每个spider 或 handler 都可以动态扩容或缩容。

参与贡献

  1. Fork 本仓库
  2. 新建 Feat_xxx 分支
  3. 提交代码
  4. 新建 Pull Request
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简介

学习Java爬虫,并总结一个简单的框架 展开 收起
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Apache-2.0
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