Java_数据交换_fastJSON_01_用法入门

一、用法

1.序列化—将Object转为Json对象

    Object data=JSON.toJSON( MyObject );

 注：本文的Object可以是Map、List、javaBean等

 

需求：请拼接如下json

{
  "openid": [
      "o1Pj9jmZvwSyyyyyyBa4aULW2mA", 
      "o1Pj9jmZvxxxxxxxxxULW2mA"
               ],
  "username": [
      "afdvvf",
      "abcd"
                ]
 }

 

代码：

     Map<String,List<String>>  postDataMap= new HashMap<String,List<String>>();
     postDataMap.put("openid", openIdList);
     postDataMap.put("username", userNameList);

     Object data=JSON.toJSON(postDataMap);
     system.out.println(data.toString());

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