• 每次用到json的时候总得去查一下,所以小小的总结一下
• 官方：http://code.alibabatech.com/wiki/pages/viewpage.action?pageId=2424946
• 具体常用的转换代码：

（1）序列化 ? ? ?

1.1 ?对象(User)：

String text = JSON.toJSONString(user /*,SerializerFeature.UseSingleQuotes */);

?

1.2 ?list / map / set集合:

String text=JSON.toJSONString(users/*,SerializerFeature.UseSingleQuotes*/);

?

（2）反序列化

2.1 ?对象(User): eg: ?{"name":"愿望 ","stime":1377087488762}

User u=JSON.parseObject(text, User.class);

?

2.2 ?list集合 ?eg: ?[{"name":"张三","stime":1377087570508},{"name":"李四","stime":1377087570508}]

List<User> list = JSON.parseArray(text, User.class);

?

2.3 ?map集合 ?eg: ?{1:{"name":"张三","stime":1377087637172},2:{"name":"李四","stime":1377087637172}}

Map<Long, User> userMap = JSON.parseObject(text, new TypeReference<Map<Long, User>>() {});

?

2.4 ?set集合 eg: ?[{"name":"李四","stime":1377087674850},{"name":"张三","stime":1377087674850}]

Set<User> userMap = JSON.parseObject(text, new TypeReference<Set<User>>(){});

?

• 附件几个testcase