改造 POST 请求 response.isSuccessful() 返回 false [英] Retrofit POST request response.isSuccessful() returning false

问题描述

我正在尝试使用 Retrofit2 发出 POST 请求.但我处于 response.isSuccessful() 返回 false 的情况，我不知道如何调试它.我检查了后端的日志，没有错误，什么都没有.

I am trying to make POST request using Retrofit2. But I am in a situation where the response.isSuccessful() is returning false and I do not know how to debug it. I checked my backend's logs and there are no errors, nothing.

我确保请求的 URL 正确，并且所有参数都正确.我做错了什么?对我来说，该请求似乎甚至没有发送到我的服务器.

I made sure that the request's URL is correct, also that all the parameters are right. What I am doing wrong? For me it seems that the request even doesn't make it to my server.

这就是我所做的:

我有带有 getter 和 setter 的 User 类:

I have class User with getters and setters:

public class User {
    @SerializedName("user_id")
    @Expose
    private int id;
    @SerializedName("first_name")
    @Expose
    private String firstName;
    @SerializedName("last_name")
    @Expose
    private String lastName;

    public int getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }
}

我有我的服务:

public interface APIService {

    @POST("auth/register")
    @FormUrlEncoded
    Call<User> register(@Field("email") String email, @Field("password") String password);
}

现在我尝试执行它，它在响应块中返回 false:

Now I try to execute it, which returns false in response block:

private void registerUser(){
        Call<User> registerCall = apiService.register(email, password);

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

                if(response.isSuccessful()){
                    int id = response.body().getId();
                    String firstName = response.body().getFirstName();
                    String lastName = response.body().getLastName();

                }else{
                    System.out.println("ERROR "+response.raw().body());
                }

            }

            @Override
            public void onFailure(Call<User> call, Throwable t) {

            }
        });
    }

这是 ApiUtils:

This is the ApiUtils:

public class ApiUtils {

    private ApiUtils() {}

    public static final String BASE_URL = "https://api.mydomain.com/";

    public static APIService getAPIService() {

        return RetrofitClient.getClient(BASE_URL).create(APIService.class);
    }
}

我做错了什么?我怎样才能做更多的调试?任何帮助表示赞赏.

What I am doing wrong? How I can do more debugging? Any help is appreciated.

推荐答案

构建改造实例(您的 getApiService 方法)似乎有问题，要查看 api 调用的日志和状态，您可以使用 http 日志记录拦截器作为:

It seems to be problem with building retrofit instance(your getApiService method), and to see the log and status of api calls you can use http logging interceptor as:

private static Retrofit retrofit = null;

OkHttpClient client = new OkHttpClient();
client.interceptors().add(new LogJsonInterceptor());

public static Retrofit getClient(String baseUrl) {
    if (retrofit==null) {
        retrofit = new Retrofit.Builder()
        .baseUrl(BASE_URL)
        .addConverterFactory(GsonConverterFactory.create())
        .client(client)
        .build();
    }
    return retrofit;
}

您可以使用拦截器查看 API 的原始 JSON 响应.希望这可以解决您的问题.

you can see the raw JSON response of API using interceptor. Hope this may solve your problem.

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