使用Dom4j对XML进行增删改查非常简单，这里就不多说废话，下面上代码
package com.bird.dom4j;import java.io.FileOutputStream;import java.io.OutputStreamWriter;import java.util.List;import org.dom4j.Document;import org.dom4j.DocumentHelper;import org.dom4j.Element;import org.dom4j.io.OutputFormat;import org.dom4j.io.SAXReader;import org.dom4j.io.XMLWriter;/** * @use 使用Dom4j对指定标签增加内容 * @author Bird * */public class DomAdd { @SuppressWarnings("unchecked") public static void add() throws Exception{ SAXReader reader = new SAXReader(); Document document = reader.read("d://book.xml"); Element book = document.getRootElement().element("书"); List list = book.elements(); Element price = DocumentHelper.createElement("售价"); price.setText("999元"); list.add(2, price); OutputFormat former =OutputFormat.createPrettyPrint();//设置格式化输出器 former.setEncoding("UTF-8"); XMLWriter writer = new XMLWriter(new OutputStreamWriter(new FileOutputStream("d://book.xml"),"UTF-8"),former); writer.write(document); writer.close(); } public static void delete() throws Exception{ SAXReader reader = new SAXReader(); Document document = reader.read("d://book.xml"); Element price = document.getRootElement().element("书").element("售价"); price.getParent().remove(price); OutputFormat format = OutputFormat.createPrettyPrint(); format.setEncoding("UTF-8"); XMLWriter writer = new XMLWriter(new FileOutputStream("d://book.xml"),format); writer.write(document); writer.close(); } public static void update() throws Exception{ SAXReader reader = new SAXReader(); Document document = reader.read("d://book.xml"); Element price = document.getRootElement().element("书").element("售价"); price.setText("10086元"); OutputFormat format = OutputFormat.createPrettyPrint(); format.setEncoding("UTF-8"); XMLWriter writer = new XMLWriter(new FileOutputStream("d://book.xml"),format); writer.write(document); writer.close(); } public static void main(String[] args) throws Exception{// add();// delete(); update(); }}再分享一下我老师大神的人工智能教程吧。零基础！通俗易懂！风趣幽默！还带黄段子！希望你也加入到我们人工智能的队伍中来！https://blog.csdn.net/jiangjunshow