Gson 解析 json抓换成了object 后就成为了hash格式 再抓换成json时会出异常

http://blog.csdn.net/tkwxty/article/details/34474501

{
 "is_main": "1",
 "field": "sex",
"name": "\u6027\u522b",
 "form_type": "box",
 "default_value": "",
 "max_length": "50",
 "is_unique": "0",
 "is_null": "1",
 "is_validate": "0",
 "in_add": "1",
 "input_tips": "",
 "setting": {
 "type": "radio",
 "data": {
 "1": "\u7537",
 "2": "\u5973"
 }
 }
 },

转换成实体类

public  class Data implements Serializable{
     /**
     * 
     */
    private static final long serialVersionUID = 1L;
    private String default_value;
     private String field;
     private String form_type;
     private String in_add;
     private String input_tips;
     private String is_main;
     private String  is_null;
     private String is_unique;
     private String is_validate;
     private String max_length;
     private String name;
     private Object setting;
    public String getDefault_value() {
        return default_value;
    }

这个时候setting的值就变成了{data={2=女, 1=男}, type=radio}