java - 将 ZonedDateTime 类型转换为 Gson

Question

我有返回对象数组列表的休息服务，我已经实现了 jersy restful 客户端来执行它，但是我在将 ZonedDateTime 类型转换为 json 时遇到问题所以我得到这个错误

 Caused by: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 231 path $[0].lastmodifieddate

我该如何解决这个问题？

实体中的 lastmodifiedate 列

 @Column(name = "lastmodifieddate")
 private ZonedDateTime lastmodifieddate;

 //getter and setter

休息服务

@RequestMapping(value = "/getScoreFactor",
        method = RequestMethod.GET,
        produces = MediaType.APPLICATION_JSON_VALUE)
@Timed
public List<Scorefactor> getScoreFactor() throws JSONException {
    return scoreService.getScoreFactor();
}   

jersy restful 客户端

  try {

        Client client = Client.create();
        WebResource webResource = client
           .resource("http://localhost:8080/adap/api/getScoreFactor");
        ClientResponse response = webResource.accept("application/json")
                   .get(ClientResponse.class);

        String output =  response.getEntity(String.class);

        System.out.println("output--"+output);
        Type listType =  new TypeToken<List<Scorefactor>>() {}.getType();

        List<Scorefactor> scorefactors = new Gson().fromJson(output,listType);

        System.out.println(scorefactors);

    } catch (Exception e) {

        e.printStackTrace();

}    

Answer 1

public static final Gson GSON = new GsonBuilder()
    .registerTypeAdapter(ZonedDateTime.class, new TypeAdapter<ZonedDateTime>() {
        @Override
        public void write(JsonWriter out, ZonedDateTime value) throws IOException {
            out.value(value.toString());
        }

        @Override
        public ZonedDateTime read(JsonReader in) throws IOException {
            return ZonedDateTime.parse(in.nextString());
        }
    })
    .enableComplexMapKeySerialization()
    .create();