在java中传入原始JSON体的改造中的POST请求问题

我试图传入这个原始JSON主体，它抛出了一个POST请求端点，该端点创建了一个新用户：

{
      "testId": 6,
      "name": "Jpe Smith",
      "buttonsCorrect": 10,
      "buttonsIncorrect": 2,
      "startSession": 1243242,
      "endSession": 4234123,
      "totalTime": 1343432,
      "userConsent": true,
      "feedback": [{
          "uiVariant1": 3,
          "uiVariant2": 5,
          "uiVariant3": 5,
          "uiVariant4": 3,
          "uiVariant5": 4,
          "uiVariant6": 6
      }]
}

这是我当前用于改装的API模型：

public interface TestClient {
    
    @Headers("Content-Type: application/json")
    @POST("v1/todos")
    Call<User> createUser(@Body User user);

}

下面是处理请求并创建要发送的数据的活动

        submit.setOnClickListener(v -> {
            String netScore = String.valueOf(nps.getRating());
            String customerScore = String.valueOf(css.getRating());
            showToast("Net score " + netScore);
            showToast("Customer score " + customerScore);
            // Store additional feedback here
            Log.e("Additional User Feedback", additionalFeedback.getText().toString());

            // preparing the data before creating JSON file.

            String testId = (String) StartScreen.userDataBundle.get("testId");
            Log.e("testId", testId);

            long sessionStart = StartScreen.userDataBundle.getLong("sessionStart");
            Log.e("sessionStart", String.valueOf(sessionStart));

            String name = StartScreen.userDataBundle.getString("name");
            Log.e("name", name);

            long sessionEnd = Instant.now().getEpochSecond();
            Log.e("sessionEnd", String.valueOf(sessionEnd));

            int totalTime = 000000;
            String userConsent = "true";
            int buttonsCorrect = 10;
            int buttonsIncorrect = 2;

            JSONArray feedback = new JSONArray();
            JSONObject feedbackScores = new JSONObject();
            try {
                feedbackScores.put("Net Score", netScore);
            } catch (JSONException e) {
                e.printStackTrace();
            }
            try {
                feedbackScores.put("Customer Score", customerScore);
            } catch (JSONException e) {
                e.printStackTrace();
            }
            feedback.put(feedbackScores);
            feedback.put(feedbackScores);

            User user = new User(
                    "1",
                    "jeff",
                    0,
                    0,
                    000000,
                    0000000,
                    000000,
                    "true",
                    feedback
            );

            sendNetworkRequest(user);
        });

        additionalFeedback.addTextChangedListener(submitTextWatcher);
    }


    private void sendNetworkRequest(User user) {
        Retrofit.Builder builder = new Retrofit.Builder()
                .baseUrl("endpointURL")
                .addConverterFactory(GsonConverterFactory.create());

        Retrofit retrofit = builder.build();
        TestClient client = retrofit.create(TestClient.class);
        Call<User> call = client.createUser(user);

        call.enqueue(new Callback<User>() {
            @Override
            public void onResponse(Call<User> call, Response<User> response) {
                //Toast.makeText(UserSurveyActivity.this, "Success!" + response.body().getTestId(), Toast.LENGTH_SHORT).show();
                Toast.makeText(UserSurveyActivity.this, "Success!" + response.body(), Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onFailure(Call<User> call, Throwable t) {
                Toast.makeText(UserSurveyActivity.this, "Something went wrong!", Toast.LENGTH_SHORT).show();
                t.getCause();
                t.printStackTrace();
            }
        });
    }

submit.setOnClickListener（v->{
String netScore=String.valueOf（nps.getRating（））；
String customerScore=String.valueOf（css.getRating（））；
showtoos（“净分数”+netScore）；
showToast（“客户分数”+客户核心）；
//在此处存储其他反馈
Log.e（“附加用户反馈”，additionalFeedback.getText（）.toString（））；
//在创建JSON文件之前准备数据。
String testId=（String）StartScreen.userDataBundle.get（“testId”）；
Log.e（“testId”，testId）；
long sessionStart=StartScreen.userDataBundle.getLong（“sessionStart”）；
Log.e（“sessionStart”，String.valueOf（sessionStart））；
String name=StartScreen.userDataBundle.getString（“名称”）；
Log.e（“名称”，名称）；
long sessionEnd=Instant.now（）.getepochsond（）；
Log.e（“sessionEnd”，String.valueOf（sessionEnd））；
int totalTime=000000；
字符串userapprovement=“true”；
int buttonsCorrect=10；
int按钮不正确=2；
JSONArray feedback=新的JSONArray（）；
JSONObject FeedbackCores=新的JSONObject（）；
试一试{
反馈分数。输入（“净分数”，netScore）；
}捕获（JSONException e）{
e、 printStackTrace（）；
}
试一试{
反馈分数。输入（“客户分数”，customerScore）；
}捕获（JSONException e）{
e、 printStackTrace（）；
}
反馈。输入（反馈核心）；
反馈。输入（反馈核心）；
用户=新用户(
"1",
“杰夫”，
0,
0,
000000,
0000000,
000000,
“真的”，
反馈
);
发送网络请求（用户）；
});
additionalFeedback.addTextChangedListener（submitTextWatcher）；
}
专用void sendNetworkRequest（用户）{
reformation.Builder=新的reformation.Builder（）
.baseUrl（“端点URL”）
.addConverterFactory（GsonConverterFactory.create（））；
改装改装=builder.build（）；
TestClient=reformation.create（TestClient.class）；
Call Call=client.createUser（用户）；
call.enqueue（新回调（）{
@凌驾
公共void onResponse（调用、响应）{
//Toast.makeText（UserSurveyActivity.this，“Success！”+response.body（）.getTestId（），Toast.LENGTH\u SHORT.show（）；
Toast.makeText（UserSurveyActivity.this，“Success！”+response.body（），Toast.LENGTH\u SHORT.show（）；
}
@凌驾
失败时公共无效（调用调用，可丢弃的t）{
Toast.makeText（UserSurveyActivity.this，“出错了！”，Toast.LENGTH\u SHORT.show（）；
t、 getCause（）；
t、 printStackTrace（）；
}
});
}

端点功能在postman中很好，可以添加用户并获取用户，但是，尽管请求成功，JSON数据没有正确传递，我该怎么办

多谢各位

        submit.setOnClickListener(v -> {
            String netScore = String.valueOf(nps.getRating());
            String customerScore = String.valueOf(css.getRating());
            showToast("Net score " + netScore);
            showToast("Customer score " + customerScore);
            // Store additional feedback here
            Log.e("Additional User Feedback", additionalFeedback.getText().toString());

            // preparing the data before creating JSON file.

            String testId = (String) StartScreen.userDataBundle.get("testId");
            Log.e("testId", testId);

            long sessionStart = StartScreen.userDataBundle.getLong("sessionStart");
            Log.e("sessionStart", String.valueOf(sessionStart));

            String name = StartScreen.userDataBundle.getString("name");
            Log.e("name", name);

            long sessionEnd = Instant.now().getEpochSecond();
            Log.e("sessionEnd", String.valueOf(sessionEnd));

            int totalTime = 000000;
            String userConsent = "true";
            int buttonsCorrect = 10;
            int buttonsIncorrect = 2;

            JSONArray feedback = new JSONArray();
            JSONObject feedbackScores = new JSONObject();
            try {
                feedbackScores.put("Net Score", netScore);
            } catch (JSONException e) {
                e.printStackTrace();
            }
            try {
                feedbackScores.put("Customer Score", customerScore);
            } catch (JSONException e) {
                e.printStackTrace();
            }
            feedback.put(feedbackScores);
            feedback.put(feedbackScores);

            User user = new User(
                    "1",
                    "jeff",
                    0,
                    0,
                    000000,
                    0000000,
                    000000,
                    "true",
                    feedback
            );

            sendNetworkRequest(user);
        });

        additionalFeedback.addTextChangedListener(submitTextWatcher);
    }


    private void sendNetworkRequest(User user) {
        Retrofit.Builder builder = new Retrofit.Builder()
                .baseUrl("endpointURL")
                .addConverterFactory(GsonConverterFactory.create());

        Retrofit retrofit = builder.build();
        TestClient client = retrofit.create(TestClient.class);
        Call<User> call = client.createUser(user);

        call.enqueue(new Callback<User>() {
            @Override
            public void onResponse(Call<User> call, Response<User> response) {
                //Toast.makeText(UserSurveyActivity.this, "Success!" + response.body().getTestId(), Toast.LENGTH_SHORT).show();
                Toast.makeText(UserSurveyActivity.this, "Success!" + response.body(), Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onFailure(Call<User> call, Throwable t) {
                Toast.makeText(UserSurveyActivity.this, "Something went wrong!", Toast.LENGTH_SHORT).show();
                t.getCause();
                t.printStackTrace();
            }
        });
    }