dom4j解析多层xml文件

DOM4J是一个基于Java的开源库，用于解析XML文档。它提供了灵活、高性能和内存效率的API，可以使用DOM、SAX、XPath和XSLT等多种方式解析XML文件。当使用DOM4J解析多层XML文件时，可以按照以下步骤进行操作：

1. 首先，需要导入DOM4J的依赖jar包，例如：

<dependency>
    <groupId>dom4j</groupId>
    <artifactId>dom4j</artifactId>
    <version>1.6.1</version>
</dependency>

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