json和xml互转（用json-lib+dom4j方法）
json-lib是通过XMLSerializer的read和write方法进行xml的读取和json的写；xml转json时如果是元素的属性，会在json里的key前加一个@标识
1. 首先准备好jar包，以下是pom文件：
net.sf.json-lib
json-lib
2.4
jdk15
dom4j
dom4j
1.6.1
xom
xom
1.2.5
2.java代码演示：
package com.lrq.demo;
import net.sf.json.JSONObject;
import net.sf.json.xml.XMLSerializer;
import org.dom4j.*;
public class TestJson2Xml {
public static void main(String[] args) throws DocumentException {
String str = "{\"CargosubmatterList\":{\"Cargosubmatter\":[{\"itemkindcode\":\"005\",\"itemCode\":\"9996\",\"itemname\":\"特约标的\",\"itemddetail\":\"特约标的\",\"rate\":\"10.00\",\"currency\":\"CNY\",\"exchangerate\":\"1.00\",\"shortrateflag\":\"1\",\"shortrate\":\"100.00\",\"calamount\":\"1\",\"mainitem\":\"1\",\"itemkindname\":\"国内公路货物运输定额保险（B款）\",\"itemkindno\":\"1\",\"itemno\":\"1\",\"chgamount\":\"0.00\",\"chgpremium\":\"0.00\"},{\"itemkindcode\":\"006\",\"itemCode\":\"9996\",\"itemname\":\"特约标的\",\"itemddetail\":\"特约标的\",\"rate\":\"0.85\",\"currency\":\"CNY\",\"exchangerate\":\"1.00\",\"shortrateflag\":\"1\",\"shortrate\":\"100.00\",\"calamount\":\"1\",\"mainitem\":\"0\",\"itemkindname\":\"附加第三者责任保险\",\"itemkindno\":\"2\",\"itemno\":\"1\",\"chgamount\":\"0.00\",\"chgpremium\":\"0.00\"}]},\"PlusInfo\":{\"liabilitystartdate\":\"本保单保险责任起期详见保单条款约定\",\"shadowagentcode\":\"M00000003878\",\"shadowagentname\":\"广东广福宏宇保险经纪有限公司福建分公司\",\"shadowagenttype\":\"2102\"}}";
JSONObject json = JSONObject.fromObject(str);
String result = json2Xml(json,"xml");
/* String str1 = result.replace(""," ");
String str2 = str1.replace(" "," ");*/
System.out.println("json转xml："+result);
JSONObject xmlJson = xml2Json(result);
System.out.println("xml转json："+xmlJson);
}
public static String json2Xml(JSONObject json, String rootName) throws DocumentException {
String sXml = "";
XMLSerializer xmlSerializer = new XMLSerializer();
xmlSerializer.setTypeHintsEnabled(false);
xmlSerializer.setRootName(rootName);
String sContent = xmlSerializer.write(json,"utf-8");
try {
Document docCon = DocumentHelper.parseText(sContent);
sXml = docCon.getRootElement().asXML();
} catch (DocumentException e) {
e.printStackTrace();
}
return sXml;
}
public static JSONObject xml2Json(String xml){
XMLSerializer xmlSerializer = new XMLSerializer();
//将xml转为json（注：如果是元素的属性，会在json里的key前加一个@标识）
String json = xmlSerializer.read(xml).toString();
return JSONObject.fromObject(json);
}
}
3. 控制台输出
如果是jsonArray会在前面加
