dom4j解析dom示例

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java代码

package com.lhw;

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import org.junit.jupiter.api.Test;

import java.util.List;

public class TestDom4J {
    @Test
    public void testReadXML() {
        SAXReader saxReader = new SAXReader();
        try {
            Document doc = saxReader.read("src/com/lhw/sche/Schema.xml");
            Element rootElement = doc.getRootElement();
//            System.out.println(rootElement.getName()); // 获取节点名称
//            System.out.println(rootElement.attributeValue("version")); // 获取节点 属性值
            //获取 节点子元素
            List<Element> childElements = rootElement.elements();
            //遍历子元素
            for(Element element: childElements){
                if("servlet".equals(element.getName())){
                    Element servletName = element.element("servlet-name");
                    Element servletClass = element.element("servlet-class");

                    System.out.println(servletName.getText());
                    System.out.println(servletClass.getText());
                }
            }
        } catch (DocumentException e) {
            e.printStackTrace();
        }
    }
}

被解析的xml文件

<?xml version="1.0" encoding="utf-8" ?>
<web-app xmlns="http://www.example.org/web-app_2_5"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://www.example.org/web-app_2_5 web-app_2_5.xsd"
         version="2.5">
    <servlet>
        <servlet-name>helloServerlet</servlet-name>
        <servlet-class>xxxxx</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>helloServerlet</servlet-name>
        <url-pattern>xxxxx</url-pattern>
    </servlet-mapping>

</web-app>