xml和JSON格式相互转换的Java实现
依赖的包:

json-lib-2.4-jdk15.jar

ezmorph-1.0.6.jar

xom-1.2.1.jar

commons-lang-2.1.jar

commons-io-1.3.2.jar

jaxen-1.1.jar





输入xml文件,输出JSON对象

package com.cash.util;

import java.io.IOException;
import java.io.InputStream;

import org.apache.commons.io.IOUtils;
import net.sf.json.JSON;
import net.sf.json.xml.XMLSerializer;

public class Test {
    public static void ConvertXMLtoJSON()  {
        InputStream is = ConvertXMLtoJSON.class.getResourceAsStream("sample.xml");
        String xml;
        try {
            xml = IOUtils.toString(is);
            System.out.println(xml);
            XMLSerializer xmlSerializer = new XMLSerializer();
            JSON json = xmlSerializer.read(xml);
            System.out.println(json.toString(1));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    
    public static void main(String[] args) {
        ConvertXMLtoJSON();
    }
}

    /**
     * 将xml字符串转换为JSON对象
     * @param xmlFile xml字符串
     * @return JSON对象
     */
    public JSON getJSONFromXml(String xmlString) {
        XMLSerializer xmlSerializer = new XMLSerializer();
        JSON json = xmlSerializer.read(xmlString);
        return json;
    }

    /**
     * 将xmlDocument转换为JSON对象
     * @param xmlDocument XML Document
     * @return JSON对象
     */
    public JSON getJSONFromXml(Document xmlDocument) {
        String xmlString = xmlDocument.toString();
        return getJSONFromXml(xmlString);
    }

    /**
     * 将xml字符串转换为JSON字符串
     * @param xmlString
     * @return JSON字符串
     */
    public String getJSONStringFromXml(String xmlString ) {
        return getJSONFromXml(xmlString).toString();
    }

    /**
     * 将xmlDocument转换为JSON字符串
     * @param xmlDocument XML Document
     * @return JSON字符串
     */
    public String getXMLtoJSONString(Document xmlDocument) {
        return getJSONStringFromXml(xmlDocument.toString());
    }

    /**
     * 读取XML文件准换为JSON字符串
     * @param xmlFile  XML文件
     * @return JSON字符串
     */
    public String getXMLFiletoJSONString(String xmlFile) {
        InputStream is = JsonUtil.class.getResourceAsStream(xmlFile);
        String xml;
        JSON json = null;
        try {
            xml = IOUtils.toString(is);
            XMLSerializer xmlSerializer = new XMLSerializer();
            json = xmlSerializer.read(xml);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return json.toString();
    }

    /**
     * 将Java对象转换为JSON格式的字符串
     * 
     * @param javaObj
     *            POJO,例如日志的model
     * @return JSON格式的String字符串
     */
    public static String getJsonStringFromJavaPOJO(Object javaObj) {
        return JSONObject.fromObject(javaObj).toString(1);
    }

    /**
     * 将Map准换为JSON字符串
     * @param map
     * @return JSON字符串
     */
    public static  String getJsonStringFromMap(Map<?, ?> map) {
        JSONObject object = JSONObject.fromObject(map);
        return object.toString();
    }