Question

我必须将Json对象与具有Date的java对象绑定。我的Json上的日期格式如下：

2013-01-04T10：50：26 + 0000

我正在使用GsonBulder：

Gson gson = new GsonBuilder().setDateFormat("yyyy-MM-dd'T'HH:mm:ssZ").create();

但我得到以下例外：

The RuntimeException could not be mapped to a response, re-throwing to the HTTP container
com.google.gson.JsonSyntaxException: 2013-01-04T10:50:26+0000
at com.google.gson.internal.bind.DateTypeAdapter.deserializeToDate(DateTypeAdapter.java:81)
.....
Caused by: java.text.ParseException: Unparseable date: "2013-01-04T10:50:26+0000"
at java.text.DateFormat.parse(DateFormat.java:337)
at com.google.gson.internal.bind.DateTypeAdapter.deserializeToDate(DateTypeAdapter.java:79)

我正在尝试使用Gson加载此请求：

https://graph.facebook.com/me?fields=id,username,email,link,updated_time&access_token=accessToken

响应是

{"id":"12345","username":"myusername","email":"myemail\u0040yahoo.it","link":"http:\/\/www.facebook.com\/mysusername","updated_time":"2013-01-04T10:50:26+0000"}

Answer 1

反序列化失败，因为缺少json String中的引号。

以下作品：

    Gson gson=  new GsonBuilder().setDateFormat("yyyy-MM-dd'T'HH:mm:ssZ").create();

    String date = "\"2013-02-10T13:45:30+0100\"";
    Date test = gson.fromJson(date, Date.class);
    System.out.println("date:" + test);

输出：

日期：太阳2月10日13:45:30 CET 2013

HTH

编辑完整示例：

import java.util.Date;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;


public class FacebookResponse {

int id;
String username;
String email;
String link;
Date updated_time;

@Override
public String toString() {
    return "ID: " + id + " username: " + username + " email: " + email + " link: " + link + " updated_time: " + updated_time;
};



/**
 * @param args
 */
public static void main(String[] args) {        
    String json = "{\"id\":\"12345\",\"username\":\"myusername\",\"email\":\"myemail\u0040yahoo.it\",\"link\":\"http://www.facebook.com/mysusername\",\"updated_time\":\"2013-01-04T10:50:26+0000\"}";
    Gson gson=  new GsonBuilder().setDateFormat("yyyy-MM-dd'T'HH:mm:ssZ").create();

    FacebookResponse response = gson.fromJson(json, FacebookResponse.class);
    System.out.println(response);
}

}

Answer 2

@PUT
@Produces(MediaType.APPLICATION_JSON)
@Consumes(MediaType.APPLICATION_JSON)
public Response put(@HeaderParam
                    final String userFromString,
                    @Context final HttpServletRequest req) {

    JSONObject jsonObject = new JSONObject(userFromString);
    ReturnCode resultCode = null;
    UserDto user= new UserDto();
    Gson gson=  new GsonBuilder().setDateFormat("yyyy-MM-dd").create();
    user= gson.fromJson(userFromString,UserDto.class);

Gson - 无法解释的日期

2 个答案: