使用Json，可以下载如下所示的6个Jar包
整个工程目录结构如下：
简单的用法：
package json;import net.sf.json.JSONArray;import net.sf.json.JSONObject;public class JsonTest { ???public static void main(String[] args) { ???????//1、输出Json字符串 ???????JSONObject container1 = new JSONObject(); ???????container1.put("ClassName", "1班"); ???????System.out.println(container1.toString()); ???????????????//2、输出Json字符串 + Json数组 ???????JSONArray className =new JSONArray(); ???????className.add("2班"); ???????className.add("3班"); ???????container1.put("classname", className); ???????System.out.println(container1.toString()); ???????????//3、输出Json字符串 + Json数组 + Json字符串 ???????JSONObject classInfo = new JSONObject(); ???????classInfo.put("stuCount", 50); ???????classInfo.put("leader", "rah"); ???????container1.put("classInfo", classInfo); ???????System.out.println(container1); ???????????????//4、字符串 转为 Json数组对象 ???????String jsonMessage = ????????????????"[{‘num‘:‘成绩‘, ‘外语‘:88, ‘历史‘:65, ‘地理‘:99, ‘object‘:{‘aaa‘:‘1111‘,‘bbb‘:‘2222‘,‘cccc‘:‘3333‘}}," + ??????????????????"{‘num‘:‘兴趣‘, ‘外语‘:28, ‘历史‘:45, ‘地理‘:19, ‘object‘:{‘aaa‘:‘11a11‘,‘bbb‘:‘2222‘,‘cccc‘:‘3333‘}}," + ??????????????????"{‘num‘:‘爱好‘, ‘外语‘:48, ‘历史‘:62, ‘地理‘:39, ‘object‘:{‘aaa‘:‘11c11‘,‘bbb‘:‘2222‘,‘cccc‘:‘3333‘}}]"; ???????????????JSONArray test = JSONArray.fromObject(jsonMessage); ???????System.out.println(test.toString()); ???????//获取Json数组的某个索引的值 ???????System.out.println(test.get(0)); ???????System.out.println(test.get(1)); ???} ???}Json使用示例
原文地址：http://www.cnblogs.com/Donnnnnn/p/7645545.html