Retrofit Body 未显示来自 Nested JSON 的预期响应

Question

我一直在尝试使用 Retrofit 将 Android 应用程序连接到 Fitbit API，但是我很难连接到 JSON带有嵌套的用户部分。我已经设法设置了类，但是在请求正文时得到正文：com.example.myapplication.User@6fe68c1。

在学习 Retrofit 的过程中，我在使用时没有遇到任何问题，但这似乎有所不同，因为 JSON.

中的“用户”

已缩短 JSON 我的工作时间为

{
    "user": {
        "age": 23,
        "avatar": "https://static0.fitbit.com/images/profile/defaultProfile_100.png",
        "averageDailySteps": 2673,
        "dateOfBirth": "1999-01-25",
        "displayName": "Name.",
        "features": {
            "exerciseGoal": true
        },
        "fullName": "Full Name",
        "gender": "MALE",
        "glucoseUnit": "METRIC",
        "height": 180.3,
        "memberSince": "2022-02-28",
        "startDayOfWeek": "MONDAY",
        "strideLengthRunning": 123.10000000000001,
        "weight": 72.5,
    }
}

Fitbit Class

    imports
    
    @Generated("jsonschema2pojo")
    public class Fitbit {
    
        @SerializedName("user")
        @Expose
        private User user;
    
        public User getUser() {
            return user;
        }
    
        public void setUser(User user) {
            this.user = user;
        }
    
    }

用户Class

imports

@Generated("jsonschema2pojo")
public class User {

    @SerializedName("age")
    @Expose
    private Integer age;
    @SerializedName("avatar")
    @Expose
    private String avatar;
    @SerializedName("averageDailySteps")
    @Expose
    private Integer averageDailySteps;
    @SerializedName("dateOfBirth")
    @Expose
    private String dateOfBirth;
    @SerializedName("fullName")
    @Expose
    private String fullName;
    @SerializedName("gender")
    @Expose
    private String gender;
    @SerializedName("height")
    @Expose
    private Double height;
    @SerializedName("memberSince")
    @Expose
    private String memberSince;
    @SerializedName("startDayOfWeek")
    @Expose
    private String startDayOfWeek;
    @SerializedName("strideLengthRunning")
    @Expose
    private Double strideLengthRunning;
    @SerializedName("strideLengthWalking")
    @Expose
    private Double strideLengthWalking;
    @SerializedName("timezone")
    @Expose
    private String timezone;
    @SerializedName("waterUnitName")
    @Expose
    private String waterUnitName;
    @SerializedName("weight")
    @Expose
    private Double weight;

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public String getAvatar() {
        return avatar;
    }

    public void setAvatar(String avatar) {
        this.avatar = avatar;
    }

    public Integer getAverageDailySteps() {
        return averageDailySteps;
    }

    public void setAverageDailySteps(Integer averageDailySteps) {
        this.averageDailySteps = averageDailySteps;
    }

    public String getDateOfBirth() {
        return dateOfBirth;
    }

    public void setDateOfBirth(String dateOfBirth) {
        this.dateOfBirth = dateOfBirth;
    }

    public String getFullName() {
        return fullName;
    }

    public void setFullName(String fullName) {
        this.fullName = fullName;
    }

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    public Double getHeight() {
        return height;
    }

    public void setHeight(Double height) {
        this.height = height;
    }

    public String getMemberSince() {
        return memberSince;
    }

    public void setMemberSince(String memberSince) {
        this.memberSince = memberSince;
    }

    public String getStartDayOfWeek() {
        return startDayOfWeek;
    }

    public void setStartDayOfWeek(String startDayOfWeek) {
        this.startDayOfWeek = startDayOfWeek;
    }

    public Double getStrideLengthRunning() {
        return strideLengthRunning;
    }

    public void setStrideLengthRunning(Double strideLengthRunning) {
        this.strideLengthRunning = strideLengthRunning;
    }

    public Double getStrideLengthWalking() {
        return strideLengthWalking;
    }

    public void setStrideLengthWalking(Double strideLengthWalking) {
        this.strideLengthWalking = strideLengthWalking;
    }

    public String getTimezone() {
        return timezone;
    }

    public void setTimezone(String timezone) {
        this.timezone = timezone;
    }

    public String getWaterUnitName() {
        return waterUnitName;
    }

    public void setWaterUnitName(String waterUnitName) {
        this.waterUnitName = waterUnitName;
    }

    public Double getWeight() {
        return weight;
    }

    public void setWeight(Double weight) {
        this.weight = weight;
    }

}

JsonPlaceholderAPI 接口Class

imports

public interface JsonPlaceholderAPI {

    @Headers({"Authorization: Bearer bearercodeinserted"})
    @GET("https://api.fitbit.com/1/user/-/profile.json")
    Call<User> getUser();
}

主要活动

public class MainActivity extends AppCompatActivity {
private TextView textViewResult;

private JsonPlaceholderAPI jsonPlaceholderAPI;

@Override
protected void onCreate(Bundle savedInstanceState) {
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    textViewResult = findViewById(R.id.text_view_result);

    Retrofit retrofit = new Retrofit.Builder()
            .baseUrl("https://jsonplaceholder.typicode.com/")
            .addConverterFactory(GsonConverterFactory.create())
            .build();

    jsonPlaceholderAPI = retrofit.create(JsonPlaceholderAPI.class);
    getUser();
}

private void getUser() {

    Call<User> call = jsonPlaceholderAPI.getUser();

    call.enqueue(new Callback<User>() {
        @Override
        public void onResponse(Call<User> call, Response<User> response) {

            if (!response.isSuccessful()) {
                textViewResult.setText("Code: " + response.code());
                return;
            }

            textViewResult.setText("Body: " + response.body());

            }

        @Override
        public void onFailure(Call<User> call, Throwable t) {
            textViewResult.setText(t.getMessage());
        }
    });
}

}

Answer 1

解决方案：

将Call<User>()更改为Call<Fitbit>() 和 response.body().getUser().toString()

如果您希望 textViewResult.setText("Body: " + response.body()); 为您提供用户数据的字符串表示，您必须覆盖用户对象上的 toString() 函数。例如：

public class User {

    @SerializedName("age")
    @Expose
    ...

    @Override
    String toString() {
       return "age: " + age + " avatar: " + avatar + ....;
    }

}

Retrofit Body 未显示来自 Nested JSON 的预期响应

Retrofit Body isn't showing desired response from Nested JSON

java

json

pojo

android-studio

retrofit