如何使用Java技术将数据有效写入XML文件中？

本文共计396个文字，预计阅读时间需要2分钟。

javapackage org.jxnd.test;

import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.UnsupportedEncodingException;import java.util.ArrayList;

package org.jxnd.test; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.util.ArrayList; import java.util.List; import org.dom4j.Document; import org.dom4j.DocumentException; import org.dom4j.DocumentHelper; import org.dom4j.Element; import org.dom4j.io.OutputFormat; import org.dom4j.io.SAXReader; import org.dom4j.io.XMLWriter; import org.jxnd.bean.Roles; import org.jxnd.bean.UserInfo; import org.xml.sax.DocumentHandler; public class Test { public static void main(String[] args) throws DocumentException, IOException { List list=new ArrayList (); list.add(new UserInfo(1001,"大东","123456",1,new Roles(1,"CEO"))); list.add(new UserInfo(1002,"苍老师","123",2,new Roles(2,"BOSS"))); list.add(new UserInfo(1003,"万牛逼","1234",3,new Roles(3,"CTO"))); Element root=DocumentHelper.createElement("students"); Document doc=DocumentHelper.createDocument(root); for(UserInfo info:list){ Element student=DocumentHelper.createElement("student"); Element id=DocumentHelper.createElement("id"); id.setText(info.getId()+""); Element name=DocumentHelper.createElement("name"); name.setText(info.getName()); Element pwd=DocumentHelper.createElement("pwd"); pwd.setText(info.getPwd()); Element roleid=DocumentHelper.createElement("rolesid"); roleid.setText(info.getRolesid()+""); Element rinfo=DocumentHelper.createElement("rinfo"); Element rid=DocumentHelper.createElement("rid"); rid.setText(info.getRinfo().getId()+""); Element rname=DocumentHelper.createElement("rname"); rname.setText(info.getRinfo().getName()); rinfo.add(rid); rinfo.add(rname); student.add(id); student.add(name); student.add(pwd); student.add(roleid); student.add(rinfo); student.addAttribute("class", info.getId()+""); root.add(student); FileOutputStream out=new FileOutputStream("student.xml"); OutputFormat format=new OutputFormat(" ", true); XMLWriter writer=new XMLWriter(out,format); writer.write(doc); out.close(); writer.close(); } } } XML文件信息

1001 大东

123456 1 1 CEO 1002 苍老师

123 2 2 BOSS 1003 万牛逼

1234 3 3 CTO