将ZonedDateTime类型转换为Gson [英] Converting ZonedDateTime type to Gson

问题描述

我有休息服务，返回对象的arraylist，我已经实现了jersy宁静的客户端来执行它，但我在转换ZonedDateTime类型为json的问题，所以我得到这个错误

 引发：java.lang.IllegalStateException：预期的BEGIN_OBJECT，但是在第1行的列STRING 231路径$ [0] .lastmodifieddate 
  
 
我如何解决这个问题？ 
 
 
 lastmodifieddate column in entity 
  @Column（name =lastmodifieddate）
 private ZonedDateTime lastmodifieddate; 
 
 // getter and setter 
  
休息服务
  @RequestMapping（value =/ getScoreFactor，
 method = RequestMethod.GET，
 produce = MediaType.APPLICATION_JSON_VALUE）
 @Timed 
 public List< Scorefactor> getScoreFactor（）抛出JSONException {
 return scoreService.getScoreFactor（）; 
 
  
 
 
  jersy宁静客户 
 
 
  try {
 
 Client client = Client.create（）; 
 WebResource webResource =客户端
 .resource（http：// localhost：8080 / adap / api / getScoreFactor）; 
 ClientResponse response = webResource.accept（application / json）
 .get（ClientResponse.class）; 
 
字符串输出= response.getEntity（String.class）; 
 
 System.out.println（output  - + output）; 
 Type listType = new TypeToken< List< Scorefactor>>（）{} .getType（）; 
 
列表< Scorefactor> scorefactors = new Gson（）。fromJson（output，listType）; 
 
 System.out.println（scorefactors）; 
 
} catch（Exception e）{
 
 e.printStackTrace（）; 
 
 
  
 
 
解决方案
修正它，这是更新后的代码
 客户端客户端= Client.create（）; 
 WebResource webResource =客户端
 .resource（http：// localhost：8080 / adap / api / getScoreFactor）; 
 ClientResponse response = webResource.accept（application / json）
 .get（ClientResponse.class）; 
 
字符串输出= response.getEntity（String.class）; 
 
 Gson gson = new GsonBuilder（）。registerTypeAdapter（ZonedDateTime.class，new JsonDeserializer< ZonedDateTime>（）{
 @Override 
 public ZonedDateTime deserialize（JsonElement json，Type type， JsonDeserializationContext jsonDeserializationContext）throws JsonParseException {
 return ZonedDateTime.parse（json.getAsJsonPrimitive（）。getAsString（））; 
} 
}）。create（）; 
 
 type listType = new TypeToken< List< Scorefactor>>（）{} .getType（）; 
 
列表< Scorefactor> scorefactors = gson.fromJson（output，listType）; 
  
 
I have rest service that return arraylist of object,and I have implemented jersy restful client to execute it,but I have problem in converting ZonedDateTime type to json so I get this error 
 Caused by: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 231 path $[0].lastmodifieddate
How can i fix this problem?

lastmodifieddate column in entity  
 @Column(name = "lastmodifieddate")
 private ZonedDateTime lastmodifieddate;

 //getter and setter
rest service
@RequestMapping(value = "/getScoreFactor",
        method = RequestMethod.GET,
        produces = MediaType.APPLICATION_JSON_VALUE)
@Timed
public List<Scorefactor> getScoreFactor() throws JSONException {
    return scoreService.getScoreFactor();
}   
jersy restful client
  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();

}    

解决方案
I have fixed it,This is the code after updates
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);

        Gson gson = new GsonBuilder().registerTypeAdapter(ZonedDateTime.class, new JsonDeserializer<ZonedDateTime>() {
            @Override
            public ZonedDateTime deserialize(JsonElement json, Type type, JsonDeserializationContext jsonDeserializationContext) throws JsonParseException {
                return ZonedDateTime.parse(json.getAsJsonPrimitive().getAsString());
            }
            }).create();

        Type listType =  new TypeToken<List<Scorefactor>>() {}.getType();

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


                        
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