用dom4j来生成xml文档

本文详细介绍了如何利用DOM4J库在Java中创建XML文档。从基本概念到具体实例,全面阐述DOM4J的API使用,包括元素、属性、文本节点的添加,以及如何组织XML结构。

摘要生成于 C知道 ,由 DeepSeek-R1 满血版支持, 前往体验 >

用dom4j来生成xml文档:

package com.honest.ssp.utils;

import java.io.File;
import java.io.FileOutputStream;

import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.XMLWriter;

public class Dom4jCreateXML {
	
	public static void main(String[] args) throws Exception {
		
		/**
		 * 创建根节点之方法一
		 */
//		//创建文档
//		Document doc1 = DocumentHelper.createDocument();
//		//创建根节点
//		Element root1 = DocumentHelper.createElement("root");
//		doc1.setRootElement(root1);
		/**
		 * 创件根节点之方法二
		 */
		//根节点
		Element root = DocumentHelper.createElement("root");
		Document doc = DocumentHelper.createDocument(root);
		//给根节点添加属性
		root.addAttribute("id", "根节点id");
		root.addAttribute("name", "根节点name");
		//给根节点添加孩子节点
		Element ele1 = root.addElement("学习");
		ele1.addAttribute("xuesheng", "学生");
		ele1.addAttribute("laoshi", "老师");
		Element ele2 = root.addElement("生活");
		ele2.addAttribute("jiji", "积极");
		ele2.addAttribute("yangguang", "阳光");
		Element ele3 = root.addElement("工作");
		ele3.addAttribute("zhudong", "主动");
		ele3.addAttribute("reqing", "热情");
		
		//给根节点的孩子节点添加孙子节点
		ele1.addElement("shuben").addAttribute("shuxing", "一年级").setText("语文书");
		ele1.addElement("kezhuo").setText("方桌");
		ele1.addElement("gangbi").setText("英雄钢笔");
		
		ele2.addElement("lvyou").setText("爱情海之旅");
		ele2.addElement("yule").addAttribute("shuxing","限量版的").setText("KTVK歌");
		ele2.addElement("xiuxian").setText("看电影");
		
		ele3.addElement("zhiwei").setText("人事专员");
		ele3.addElement("chuangyezhe").addAttribute("biaoqian","首富").setText("马云");
		ele3.addElement("boss").setText("王健林");
		
		//把生成的xml储存在硬盘上、缩进量  true表示换行
		OutputFormat format = new OutputFormat("  ", true);
		format.setEncoding("gbk");//设置编码格式
		//1创建目标文件  
        File desFile = new File("F:/DOM4JCreateXML.xml"); 
		//创建以流的形式写出对象
		XMLWriter xmlWrite = new XMLWriter(new FileOutputStream(desFile), format);
		xmlWrite.write(doc);
		xmlWrite.close();
	}
}


生成的xml文档

<?xml version="1.0" encoding="gbk"?>

<root id="根节点id" name="根节点name">
  <学习 xuesheng="学生" laoshi="老师">
    <shuben shuxing="一年级">语文书</shuben>
    <kezhuo>方桌</kezhuo>
    <gangbi>英雄钢笔</gangbi>
  </学习>
  <生活 jiji="积极" yangguang="阳光">
    <lvyou>爱情海之旅</lvyou>
    <yule shuxing="限量版的">KTVK歌</yule>
    <xiuxian>看电影</xiuxian>
  </生活>
  <工作 zhudong="主动" reqing="热情">
    <zhiwei>人事专员</zhiwei>
    <chuangyezhe biaoqian="首富">马云</chuangyezhe>
    <boss>王健林</boss>
  </工作>
</root>




该项目采用dom4j从数据库表中生xml数据 项目文档、数据库建表语句均已放置在项目中。 关键代码如下: public String getXml(Connection conn, int rm_id, String path) { //声明xml字符串 String fileString = ""; //创建DAO对象 MachineroomDao machineroom_dao = new MachineroomDao(); Cab_equipmentDao cab_equipment_dao = new Cab_equipmentDao(); Equip_configDao equip_config_dao = new Equip_configDao(); EquipmentDao equipment_dao = new EquipmentDao(); //添加room,第一层 Machineroom machineroom_dto = machineroom_dao.findById(conn, rm_id);//设置房间号 //获取个属性的值.如果为null,将属性设为"" String getMr_id = new Integer(machineroom_dto.getMr_id()).toString(); String getMr_name = machineroom_dto.getMr_name(); if(getMr_id == null) getMr_id = ""; if(getMr_name == null) getMr_name = ""; Document document = DocumentHelper.createDocument(); Element rooms_racks = document.addElement("rooms-racks"); Element room = rooms_racks.addElement("room"); room.addAttribute("id", getMr_id); room.addAttribute("name", getMr_name); room.addAttribute("isSelected", "true"); //添加rack,第二层 List<Cab_equipment> cab_equipment_list = cab_equipment_dao.findById(conn, path, machineroom_dto.getMr_id()); for (int i = 0; i < cab_equipment_list.size(); i++) { Cab_equipment cab_equipment_dto = cab_equipment_list.get(i); //获取个属性的值.如果为null,将属性设为"" String getE_id = cab_equipment_dto.getE_id(); String getEqucab_name = cab_equipment_dto.getEqucab_name(); String getX = cab_equipment_dto.getX() + ""; String getY = cab_equipment_dto.getY() + ""; String getZ = cab_equipment_dto.getZ() + ""; String getLongs = cab_equipment_dto.getLongs() + ""; String getWidth = cab_equipment_dto.getWidth() + ""; String getHighs = cab_equipment_dto.getHighs() + ""; String getRotate_angle = cab_equipment_dto.getRotate_angle(); if(getE_id == null) getE_id = ""; if(getEqucab_name == null) getEqucab_name = ""; if(getRotate_angle == null) getRotate_angle = ""; //将float后的".0"去掉 if(cab_equipment_dto.getX()%1 == 0) getX = (int)cab_equipment_dto.getX()+""; if(cab_equipment_dto.getY()%1 == 0) getY = (int)cab_equipment_dto.getY()+""; if(cab_equipment_dto.getZ()%1 == 0) getZ = (int)cab_equipment_dto.getZ()+""; if(cab_equipment_dto.getHighs()%1 == 0) getHighs = (int)cab_equipment_dto.getHighs()+""; Element rack = room.addElement("rack"); rack.addAttribute("id", getE_id); rack.addAttribute("name", getEqucab_name); rack.addAttribute("x", getX); rack.addAttribute("y", getY); rack.addAttribute("z", getZ); rack.addAttribute("lengthX", getLongs); rack.addAttribute("lengthY", getWidth); rack.addAttribute("lengthZ", getHighs); rack.addAttribute("rotation", getRotate_angle); //添加device,第三层 int u = 0;//表示需要计算的u高,其xml的属性为uplace int count = 0;//计数器,临时变量 int count2 = 0; List<Equip_config> equip_config_list = equip_config_dao.findByLocation(conn, cab_equipment_dto.getE_id()); for (int j = 0; j < equip_config_list.size(); j++) { Equip_config equip_config_dto = equip_config_list.get(j); Equipment equipment_dto = equipment_dao.findBySerial(conn, equip_config_dto.getSerial()); //获取个属性的值.如果为null,将属性设为"" String getSerial = equip_config_dto.getSerial(); String getEquipmentname = equip_config_dto.getEquipmentname(); String getEq_typecn = equipment_dto.getEq_typecn(); String getImagepath = equip_config_dto.getImagepath(); String getStorey = equip_config_dto.getStorey(); //String getU = equip_config_dto.getU() + ""; if(getSerial == null) getSerial = ""; if(getEquipmentname == null) getEquipmentname = ""; if(getEq_typecn == null) getEq_typecn = ""; if(getImagepath == null) getImagepath = ""; if(getStorey == null) getStorey = ""; int getU = equip_config_dto.getU(); //处理u高 if(getU != 0){ count++; } if(count2==0){ if(count == 1){ u = 2; } }else{ Equip_config equip_config_dto_temp = equip_config_list.get(count2 - 1); Equipment equipment_dto_temp = equipment_dao.findBySerial(conn, equip_config_dto_temp.getSerial()); int getU_temp = equip_config_dto_temp.getU(); if(count == 1){ u = 2; }else { if(getU_temp == 0){ u = u + getU_temp/10 + 0; } else { if(getU_temp == 0){ u = u + getU_temp/10 +2; }else { u = u + getU_temp/10 + 1 + 2; } } } } count2++; String uplace = u + ""; String GetU = getU + ""; if(getU == 0) { uplace = "0"; }//u高处理完毕 Element device = rack.addElement("device"); device.addAttribute("num", getSerial); device.addAttribute("name", getEquipmentname); device.addAttribute("type", getEq_typecn); device.addAttribute("image", getImagepath); //device.addAttribute("storey", getStorey);//设备所在的层数,该属性不在xml中展示 device.addAttribute("uplace", uplace);//计算得来的u高 device.addAttribute("uheight", GetU);//图片的高度 } } //设置xml输出格式 OutputFormat format = OutputFormat.createPrettyPrint(); format.setEncoding("UTF-8"); StringWriter out = new StringWriter(); XMLWriter xmlWriter = new XMLWriter(out, format); try { xmlWriter.write(document); fileString = out.toString(); xmlWriter.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } return fileString; }
评论
添加红包

请填写红包祝福语或标题

红包个数最小为10个

红包金额最低5元

当前余额3.43前往充值 >
需支付:10.00
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包

打赏作者

张小洛

你的鼓励将是我创作的最大动力

¥1 ¥2 ¥4 ¥6 ¥10 ¥20
扫码支付:¥1
获取中
扫码支付

您的余额不足,请更换扫码支付或充值

打赏作者

实付
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明:

1.余额是钱包充值的虚拟货币,按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载,可以购买VIP、付费专栏及课程。

余额充值