dom4j对xml解析

Posted 2021-04-25 Ataa

新建包和类，新建xml，（比如schema约束）新建lib文件夹，导入jar包：dom4j-1.6.1.jar，Build path --> Add to Build Path

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package cn.itheima.xml.dom4j;

import java.util.List;

import org.dom4j.Document;

import org.dom4j.DocumentException;

import org.dom4j.Element;

import org.dom4j.io.SAXReader;

import org.junit.Test;

public class TestDom4j {

@Test

public void testReadWebXml(){

try {

//1、获取解析器

SAXReader saxReader =new SAXReader();

//2、获取document文档对象

Document doc = saxReader.read("src/cn/itheima/xml/dom4j/web.xml");

//3、获取根元素

Element rootElement = doc.getRootElement();

//System.out.println(rootElement.getName());//获取根元素名称

//System.out.println(rootElement.attributeValue("version"));//获取根元素名称属性值

//4、获取根元素下的子元素

List<Element> childElements = rootElement.elements();

//5、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) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}