java中Xml、json之间的相互转换

package exercise.xml;

import net.sf.json.JSON;
import net.sf.json.JSONSerializer;
import net.sf.json.xml.XMLSerializer;

import org.jdom.Document;public class XmlExercise {    /**
* 将xml字符串<STRONG>转换</STRONG>为JSON字符串
*
* @param xmlString
*            xml字符串
* @return JSON<STRONG>对象</STRONG>     */
public static String xml2json(String xmlString) {
XMLSerializer xmlSerializer = new XMLSerializer();
JSON json = xmlSerializer.read(xmlString);        return json.toString(1);
}    /**
* 将xmlDocument<STRONG>转换</STRONG>为JSON<STRONG>对象</STRONG>
*
* @param xmlDocument
*            XML Document
* @return JSON<STRONG>对象</STRONG>     */
public static String xml2json(Document xmlDocument) {        return xml2json(xmlDocument.toString());
}    /**
* JSON(数组)字符串<STRONG>转换</STRONG>成XML字符串
*
* @param jsonString
* @return     */
public static String json2xml(String jsonString) {
XMLSerializer xmlSerializer = new XMLSerializer();        return xmlSerializer.write(JSONSerializer.toJSON(jsonString));        // return xmlSerializer.write(JSONArray.fromObject(jsonString));//这种方式只支持JSON数组    }

}

package exercise.xml;

import net.sf.json.JSONArray;
import net.sf.json.JSONObject;public class XmlTest extends XmlExercise {    public static void main(String[] args) {

JSONObject jsonObject = new JSONObject();
jsonObject.put("username", "horizon");
JSONArray jsonArray = new JSONArray();
JSONObject dataJson = new JSONObject();
jsonArray.add(jsonObject);        //jsonArray.add(jsonObject);
dataJson.put("data", jsonArray);
System.out.println(dataJson.toString());

String xml = json2xml(dataJson.toString());
System.out.println("xml:" + xml);
String str = xml2json(xml);
System.out.println("to_json" + str);

}
}