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simple_crawler's Introduction

simple-crawler

简单爬虫（爬取静态网页，没有使用框架，权当对爬虫工作机制的一个了解）

目标分析

确定目标，然后对目标进行分析（选择策略），包含三个分析方向。

在页面中通过右键审查元素的方式来获取一下三个元素的信息

  • URL格式：限定抓取网页的范围
  • 数据格式：根据需要抓取的信息，选择抓取的标签
  • 网页编码：在代码解析器中指明编码格式

目标

百度百科Python词条相关词条的网页 -标题和简介

入口页：http://baike.baidu.com/item/Python

URL格式：

词条页面URL:/view/20965.htm

none

非完整URL，在代码中我们还需要进行拼接

数据格式：

标题：

none

简介：

none

页面编码：

找到网页的head（审查网页任意位置），找到网页的编码UTF-8

none

simple_crawler's People

Contributors

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