Question

我开发了一个REST API，我正在尝试使用Android连接到它。以下是我的代码。

private void restCall()
    {

        Retrofit retrofit = new Retrofit.Builder()
                .baseUrl(URL)
                .addConverterFactory(GsonConverterFactory.create())
                .build();

        YourEndpoints request = retrofit.create(YourEndpoints.class);



        SetupBean setupBean = new SetupBean();
            setupBean.setIdPatient(1);
            setupBean.setCircleType(1);
            setupBean.setFamiliarity(1);
            setupBean.setValence(2);
            setupBean.setArousal(3);
            setupBean.setDateCreated(Common.getSQLCurrentTimeStamp());
            setupBean.setLastUpdated(Common.getSQLCurrentTimeStamp());

        Call<ResponseBody> yourResult = request.insertSetup(setupBean);
        yourResult.enqueue(new Callback<ResponseBody>() {
            @Override
            public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) {

                try {
                    Log.d("MainActivity", "RESPONSE: " + response.errorBody().string());
                }
                catch(Exception e)
                {
                    e.printStackTrace();
                }

            }

            @Override
            public void onFailure(Call<ResponseBody> call, Throwable t) {
                try {
                    t.printStackTrace();
                    Log.d("MainActivity", "RESPONSE: "+"FAILED");
                }
                catch(Exception e)
                {
                    e.printStackTrace();
                }
            }

        });


    }

当我运行时，会显示以下错误

Can not construct instance of java.sql.Timestamp from String value 'Jun 9, 2016 4:24:37 PM': not a valid representation (error: Failed to parse Date value 'Jun 9, 2016 4:24:37 PM': Can not parse date "Jun 9, 2016 4:24:37 PM": not compatible with any of standard forms ("yyyy-MM-dd'T'HH:mm:ss.SSSZ", "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", "EEE, dd MMM yyyy HH:mm:ss zzz", "yyyy-MM-dd"))

因此转换Timestamp似乎存在问题。在我的Bean课程中，以下是Timestamp的定义方式。

public void setDateCreated(Timestamp dateCreated) {
        this.dateCreated = dateCreated;
    }

    public Timestamp getLastUpdated() {
        return lastUpdated;
    }

在我的restCall()方法中，我调用Common.getSQLCurrentTimeStamp()来生成时间戳。以下是该方法。

public static Timestamp getSQLCurrentTimeStamp()
    {
        java.util.Date date = new java.util.Date();
        Timestamp t = new Timestamp(date.getTime());
        System.out.println(t);
        return t;
    }

因此，当我运行restCall()方法时，为什么会出现此Can not construct instance of java.sql.Timestamp from String value 'Jun 9, 2016 4:24:37 PM': not a valid representation (error: Failed to parse Date value 'Jun 9, 2016 4:24:37 PM': Can not parse date "Jun 9, 2016 4:24:37 PM": not compatible with any of standard forms ("yyyy-MM-dd'T'HH:mm:ss.SSSZ", "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", "EEE, dd MMM yyyy HH:mm:ss zzz", "yyyy-MM-dd"))错误？我该如何解决？

Answer 1

我自己解决了这个问题。 Retrofit 2正在使用GSON，因此您必须手动提供日期时间转换器

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

        Retrofit retrofit = new Retrofit.Builder()
                .baseUrl(URL)
                .addConverterFactory(GsonConverterFactory.create(gson))
                .build();

Android：无法从String值构造java.sql.Timestamp的实例

1 个答案: