dom4j解析XML文件
需要引入dom4j的jar包
struts.xml(工程src目录下)
<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd"><struts> <package name="user" extends="struts-default" namespace="/user"><action name="*User" method="{1}User"> <result name="success" type="chain"> <param name="actionName">queryUsers</param> <param name="namespace">/user</param> </result> <result name="error" >/error.jsp</result></action> <action name="queryUsers" method="queryUser"> <result name="users">/show.jsp</result> </action> </package></struts>]import java.util.List;import org.dom4j.Document;import org.dom4j.DocumentException;import org.dom4j.Element;import org.dom4j.io.SAXReader;public class Dom4jReaderXML {@SuppressWarnings("unchecked")public static void main(String[] args) throws DocumentException {SAXReader saxReader = new SAXReader();//1.读取xml文件Document doc = saxReader.read(Dom4jReaderXML.class.getClassLoader().getResourceAsStream("struts.xml"));//还可以通过下面方法读取//Document doc = saxReader.read("src/struts.xml");//以下两种方式是通过绝对路径读取xml文件//String path = "D:/MyEclipse 8.6/spring/springmvc/src/struts.xml";//Document doc = saxReader.read(path);//Document doc = saxReader.read(new File(path));Element root = doc.getRootElement();//获取根元素strutsElement element = root.element("package");//获取元素package//System.out.println(element.asXML());//获取package节点的内容System.out.println("package name=" + element.attributeValue("name"));//遍历元素package下所有的action元素for(Element action_element : (List<Element>)element.elements("action")) {//获取元素action的属性System.out.print(" action name=" + action_element.attributeValue("name"));System.out.print(" method=" + action_element.attributeValue("method"));//遍历元素action下所有的result元素for(Element rusult_element : (List<Element>)action_element.elements("result")) {//获取元素result的属性System.out.print(" result name=" + rusult_element.attributeValue("name"));if(rusult_element.isTextOnly()) {System.out.println(" value=" + rusult_element.getText());} else {System.out.println();//遍历元素result下所有的param元素for(Element param_elment : (List<Element>)rusult_element.elements("param")) {//获取元素param的属性System.out.print(" param name=" + param_elment.attributeValue("name"));System.out.println(" value=" + param_elment.getText());}}}}}}package name=user action name=*User class=com.test.user.action.UserAction method={1}User result name=success param name=actionName value=queryUsers param name=namespace value=/user result name=error value=/error.jsp action name=queryUsers class=com.test.user.action.UserAction method=queryUser result name=users value=/show.jsp