java注解生成xml和包含CDATA问题

百度java生成xml，有一大推的文章，主要的生成方式一种使用Dom4J ,还有一种使用Jdk自带注解类！

下面主要整理我注解类的使用，（可以参考这篇文章Dom4J生成xml和包含CDATA问题）和xml中CDATA 问题的解决方法！

1:要生成的xml原始文件！

<?xml version="1.0" encoding="utf-8"?>
<item>
  <id>35399645973</id>
  <title><![CDATA[补水首选水密码水保湿美白护洗护组合三件]]> </title>
 <category><![CDATA[美妆>保湿>洗护]]></category>
  <url><![CDATA[http://www.example.com/detail-35399645973]]> </url>
  <url_wap><![CDATA[http://m.example.com/de99645973]]> </url_wap>
  <price>310</price>
  <promotion_price>93.8</promotion_price>
<wap_price>85</wap_price>
<sub_item_ids>
		<sub_item_id>35399645973_1</sub_item_id>
		<sub_item_id>35399645973_2</sub_item_id>
		<sub_item_id>35399645973_3</sub_item_id>
		……
</sub_item_ids>
  <detail><![CDATA[商品详情，支持html图文混排]]> </detail>
  <status>1<status>
	<pic_main>
    <img>
      <url><![CDATA[http://www.example.com/10777829/T_400x400.jpg]]> </url>
      <size>400x400</size>
    </img>
  </pic_main>
  <pic_extra>
    <img>
      <url><![CDATA[http://www.example.com/10777821_400x400.jpg]]> </url>
      <size>400x400</size>
	</img>
	<img>
      <url><![CDATA[http://www.example.com/10777822_400x400.jpg]]> </url>
      <size>400x400</size>
    </img>
  </pic_extra >
</item>

2：xml对应的model类！

(1):FanLiProductInofMsg.java

import java.util.List;

import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlElementWrapper;
import javax.xml.bind.annotation.XmlRootElement;

/**
 *
 * @author aflyun
 * @date 2016.06.12
 *
 */
@XmlRootElement(name="item")
public class FanLiProductInofMsg {

	@XmlAttribute
	private String version;

	@XmlElement
	private String id;

	@XmlElement
	private String title;

	@XmlElement
	private String category;

	@XmlElement
	private String url;//Pc商品的url

	@XmlElement(name="url_wap")
	private String urlWap;//Wap商品的url  url_wap

	@XmlElement
	private String price;

	@XmlElement(name="promotion_price")
	private String promotionPrice;//promotion_price

	@XmlElement(name="wap_price")
	private String wapPrice;//wap_price

	@XmlElementWrapper(name="sub_item_ids")
	@XmlElement(name="sub_item_id")
	private List<String> subItemIds;//sub_item_ids

	@XmlElement
	private String detail;//detail

	@XmlElement
	private String status;//status

	@XmlElementWrapper(name="pic_main")
	@XmlElement(name="img")
	private List<Img> mainImg;//pic_main

	@XmlElementWrapper(name="pic_extra")
	@XmlElement(name="img")
	private List<Img> extraImg;//pic_extra

	public void setVersion(String version) {
		this.version = version;
	}

	public void setId(String id) {
		this.id = id;
	}

	public void setTitle(String title) {
		this.title = title;
	}

	public void setCategory(String category) {
		this.category = category;
	}

	public void setUrl(String url) {
		this.url = url;
	}

	public void setUrlWap(String urlWap) {
		this.urlWap = urlWap;
	}

	public void setPrice(String price) {
		this.price = price;
	}

	public void setPromotionPrice(String promotionPrice) {
		this.promotionPrice = promotionPrice;
	}

	public void setWapPrice(String wapPrice) {
		this.wapPrice = wapPrice;
	}

	public void setSubItemIds(List<String> subItemIds) {
		this.subItemIds = subItemIds;
	}

	public void setDetail(String detail) {
		this.detail = detail;
	}

	public void setStatus(String status) {
		this.status = status;
	}

	public void setMainImg(List<Img> mainImg) {
		this.mainImg = mainImg;
	}

	public void setExtraImg(List<Img> extraImg) {
		this.extraImg = extraImg;
	}

}

(2):Img .java

import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
/**
 *
 * @author aflyun
 * @date 2016.06.12
 *
 */
@XmlRootElement
public class Img {

	@XmlElement(name="url")
	private String url;

	@XmlElement(name="size")
	private String size;

	public void setUrl(String url) {
		this.url = url;
	}

	public void setSize(String size) {
		this.size = size;
	}

}

3：生成过程，已经CDATA问题处理！

package com.dufy.test.xml;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.Marshaller;
import javax.xml.transform.sax.SAXResult;

import org.apache.xml.serialize.OutputFormat;
import org.apache.xml.serialize.XMLSerializer;
import org.junit.Test;

import com.kuyu.b2b2c.product.fanli.vo.FanLiProductInofMsg;
import com.kuyu.b2b2c.product.fanli.vo.Img;

public class JuintXmlTest {

	private static Marshaller marshal;

	@Test
	public void testXml() throws Exception {
		List<String> list = new ArrayList<String>();
		list.add("11_11_11");
		list.add("22_22_22");
		list.add("33_33_33");
		List<Img> imgList = new ArrayList<Img>();
		Img img = null;
		for (int i = 0; i < 2; i++) {
			img = new Img();
			img.setUrl("-" + i + "-");
			img.setSize("40×40");
			imgList.add(img);
		}

		FanLiProductInofMsg fps = new FanLiProductInofMsg();
		fps.setVersion("1.0");
		fps.setId("110");
		fps.setTitle("4K 高清");
		fps.setCategory("电视>4K>高清");
		fps.setUrl("http://baidu.com");
		fps.setUrlWap("http://baidu.wap.com");
		fps.setPrice("100");
		fps.setPromotionPrice("111");
		fps.setWapPrice("113");
		fps.setSubItemIds(list);
		fps.setDetail("wwwwwwwwwwwwwwwwwwwwwww");
		fps.setStatus("1");
		fps.setMainImg(imgList);
		fps.setExtraImg(imgList);

		 PrintWriter pw = new PrintWriter(new File("D:/test.xml"));
		 String ojbectToXmlWithCDATA = ojbectToXmlWithCDATA(FanLiProductInofMsg.class, fps);
		 System.out.println(ojbectToXmlWithCDATA);
		 pw.println(ojbectToXmlWithCDATA);
		 pw.close();

	}
	 public static String ojbectToXmlWithCDATA(Class clazz, Object obj) throws Exception {  

	        JAXBContext context = JAXBContext.newInstance(clazz);
	        // configure an OutputFormat to handle CDATA
		    OutputFormat of = new OutputFormat();
		    of.setCDataElements(
				  new String[] { "^title", //
						  		 "^category",
						  		 "^url",
						  		 "^url_wap",
						  		 "^detail"
						  		 }); //  

		    // set any other options you'd like
		    of.setPreserveSpace(true);
		    of.setIndenting(true);
		    // create the serializer
	        ByteArrayOutputStream op = new ByteArrayOutputStream();
	        XMLSerializer serializer = new XMLSerializer(op, of);
	        SAXResult result = new SAXResult(serializer.asContentHandler());
	        Marshaller mar = context.createMarshaller();
	        mar.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
	        mar.marshal(obj, result);  

	        return op.toString("utf-8");
	    }  

}

setCDataElements 这里面你标注需CDATA 的字段！

上面的这个例子可以直接拷贝运行，网上还一些其他的方法生成xml和CDATA，如果你有好的方法，欢迎分享给我，谢谢！

4:参考文章

（1）：Jaxb2 转换XML文档

（2）：Jaxb annotation初步使用

（3）：三步解决JAXB生成XML包含CDATA问题—JAVA编程

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