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jsoup-learning's Introduction

Jsoup学习笔记

Jsoup是Java世界的一款HTML解析工具,它支持用CSS Selector方式选择DOM元素,也可过滤HTML文本,防止XSS攻击。

学习Jsoup是为了更好的开发我的另一个爬虫框架webmagic,为了学的比较详细,就强制自己用很规范的方式写出这部分文章。

代码部分来自https://github.com/jhy/jsoup,添加了一些中文注释以及示例代码。


提纲

  1. 概述

  2. DOM相关对象

  3. Document的输出

  4. HTML语法分析parser

    1. 语法分析与状态机基础
    2. 词法分析Tokenizer
    3. 语法检查及DOM树构建
  5. CSS Selector

  6. 防御XSS攻击

  7. 为Jsoup增加XPath选择功能

    Jsoup默认没有XPath功能,我写了一个项目Xsoup,可以使用XPath来选择HTML文本。Java里较常用的XPath抽取器是HtmlCleaner,Xsoup的性能比它快了一倍。


协议:

相关代码遵循MIT协议。

文档遵循CC-BYNC协议。

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