JSON和JAVA对象之间的转换
发现一个比较好用的JSON和JAVA对象之间的转换工具。名字叫GSON.
gson网址:http://code.google.com/p/google-gson/
参考：
原文 - [url]http://www.mkyong.com/java/how-do-convert-java-object-to-from-json-format-gson-api/ [/url]
Json Official site – http://www.json.org/
Json in Wiki – http://en.wikipedia.org/wiki/JSON
Google Gson – http://code.google.com/p/google-gson/
Gson User Guide - http://sites.google.com/site/gson/gson-user-guide
很简单的使用：
toJson：转Object到json
fromJson：转json到Object
上面的两个API基本够日常使用了。其他的自己看吧。
实例代码：
pojo:
public static void main(String[] args) {Gson gson = new Gson();String json = null;UserInfo userinfo = new UserInfo();json = gson.toJson(userinfo);System.out.println("userinfo json str:"+json);//userinfo json str:{"username":"zhangsan","password":"zhangsnaPass","subName":["aab","lisi"],"map":{"u2":"v2","u1":"v1"},"privileges":[{"priviName":"delete img res"},{"priviName":"add music res"}],"privilegesObj":{"priviName":"test res iffo"}}json = "{"username":"zhangsan","password":"zhangsnaPass","subName":["list1","list2"],"map":{"u2":"v2","u1":"v1"},"privileges":[{"priviName":"delete img res"},{"priviName":"add music res"}],"privilegesObj":{"priviName":"test res iffo"}}";userinfo = gson.fromJson(json, UserInfo.class);System.out.println(userinfo);}