在 java注解生成xml和包含CDATA问题里面做了介绍，这里直接贴代码。
1：生成xml的java文件

package com.dufy.test.xml;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;

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

/**
 * 使用DOM4J生成xml并包括CDATA的处理
 * @author aflyun
 * @date 2016.06.16
 *
 */
public class TestGenerateXml { 

    /** 
    * @param args 
    */ 
    public static void main(String[] args) { 
        
        loadXml(); 
    
    } 
    /**
     * 生成 document xml
     */
    public static void loadXml(){ 
        Document document = DocumentHelper.createDocument();//由DocumentHelper得到一个空的Document 
        document.setXMLEncoding("utf-8");//设置xml头条的Encoding 
        //addElement写入根节点 addAttribute节点属性的键和值 
        Element root = document.addElement("item");//.addAttribute("xmlns", "").addAttribute("版本号", ""); 
        //由根节点 可以得到下二级的节点 
        Element id = root.addElement("id"); 
        id.addText("35399645973"); 
        //二级节点 
        Element title = root.addElement("title"); 
        
        title.addText("<![CDATA[补水首选水密码水保湿美白护洗护组合三件]]>");
        
        Element category = root.addElement("category"); 
        category.addText("<![CDATA[美妆>保湿>洗护]]>");
        
        Element url = root.addElement("url"); 
        url.addText("<![CDATA[http://www.example.com/detail-35399645973]]>");
        
        Element url_wap = root.addElement("url_wap"); 
        url_wap.addText("<![CDATA[http://www.example.com/detail-35399645973]]>");
        
        Element price = root.addElement("price"); 
        price.addText("310");
        
        Element promotion_price = root.addElement("promotion_price"); 
        promotion_price.addText("111");
        
        Element wap_price = root.addElement("wap_price"); 
        wap_price.addText("80");
        
        Element sub_item_ids = root.addElement("sub_item_ids"); 
            Element sub_item_id = sub_item_ids.addElement("sub_item_id");
            sub_item_id.addText("35399645973_1");
            sub_item_id.addText("35399645973_2");
            sub_item_id.addText("35399645973_3");
        
        Element detail = root.addElement("<detail>"); 
        detail.addText("<![CDATA[商品详情，支持html图文混排]]>");
        
        Element status = root.addElement("status"); 
        status.addText("1");
        
        Element pic_main = root.addElement("pic_main"); 
            Element img_main = pic_main.addElement("img");
            img_main.addElement("url").addText("<![CDATA[http://www.example.com/10777829/T_400x400.jpg]]>");
            img_main.addElement("size").addText("400x400");
        
        
        Element pic_extra = root.addElement("pic_extra"); 
            Element img_extra = pic_extra.addElement("img");
            img_extra.addElement("url").addText("<![CDATA[http://www.example.com/10777829/T_400x400.jpg]]>");
            img_extra.addElement("size").addText("400x400");
            Element img_extr1 = pic_extra.addElement("img");
            img_extr1.addElement("url").addText