Android: 无法从字符串值构造 java.sql.Timestamp 的实例

Question

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

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();
                }
            }

        });


    }

当我运行这个的时候，它显示了下面的错误

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"))

所以似乎转换 Timestamp 有问题。在我的 Bean class 中，下面是 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。下面是那个方法。

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

那么，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: 无法从字符串值构造 java.sql.Timestamp 的实例

Android: Can not construct instance of java.sql.Timestamp from String value

java

post

android

retrofit

retrofit2