# Introduction

![](/files/-LT2WwOBt8nnBdhXATZI)

Dom4j版本：**v2.1.1**

本文档是基于国科大王伟老师的面向对象程序设计课程所作的一个对Dom4j的较为全面的深入解析。主要内容分为3个部分：

第一部分：Dom4j的功能与使用

第二部分：Dom4j的核心类、对象、运作原理

第三部分：Dom4j的高级设计意图

文档更新记录：

2018年11月28日 更新

2018年11月1日 创建本文档


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://2550688560.gitbook.io/dom4j_guide/master.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.