Question

我想通过改装2将字符串从app发送到服务器，并获取返回值。问题是什么？但它不起作用。

Retrofit retrofit = new Retrofit.Builder().baseUrl(BASE_URL)
                    .addConverterFactory(GsonConverterFactory.create())
                    .build();
            RatingApiService retrofitService=retrofit.create(RatingApiService.class);

            Call<String> call = retrofitService.registration("saeed","ali");
            call.enqueue(new Callback<String>() {
                @Override
                public void onResponse(Call<String> call, Response<String> response) {
                    if(response!=null){
                        Log.i("upload","is success:" +response.body());
                    }else{
                        Log.i("upload","response is null");
                    }
                }

                @Override
                public void onFailure(Call<String> call, Throwable t) {
                    Log.i("upload","onFailure: "+t.getMessage());
                }
            });

接口：

public interface RatingApiService {
    @FormUrlEncoded
    @POST("android/add2/{email}{password}")
    Call<String> registration(@Path("email") String email, @Path("password") String password);
}

Answer 1

您需要在方法中添加@Body注释，如下所示。

@POST("users/new")
Call<User> createUser(@Body User user);

@Body的内容作为请求正文发送到服务器。如果要向服务器发送电子邮件和密码，则应创建包含此类数据的对象，并使用@Body注释中的对象。

Answer 2

而不是使用参数来传递数据;把它放在一个req.body，然后发送它。通过这样做，您可以绕过URL字符串限制，并且代码更有条理。

public interface RatingApiService {
  @Headers("Content-Type: application/json") //Must be set to application/json so req.body can be read.
  @POST("android")
  Call<String> registration(@Body UserRegistrationRequest body);
}

现在，你可能会问什么是＆＃34; UserRegistrationRequest＆＃34;类？这将是将作为JSON对象发送的对象类。我们通过以下方式定义：

public class UserRegistrationRequest {
    final String email;
    final String password;

    UserRegistrationRequest(String email, String password){
        this.email = email;
        this.password = password;
    }

}

然后是最后一步。这是将对象转换为JSON对象并将其发送到服务器的方法。

       UserRegistrationRequest userRegistrationRequest = new UserRegistrationRequest(
                RegisterNameFragment.sFirstName, RegisterNameFragment.sLastName, RegisterEmailFragment.sEmail,
                RegisterPasswordFragment.sPassword, RegisterAgeFragment.sAge);

            Call<Void> call = retrofit.insertUserRegistration(userRegistrationRequest);
            call.enqueue(new Callback<UserRegistration>() {
                @Override
                public void onResponse(Call<UserRegistration> call, Response<UserRegistration> response) {
                    Log.d("blue", "Data is sent");

                }
                @Override
                public void onFailure(Call<UserRegistration> call, Throwable t) {
                    Log.d("blue", "fail");
                }
            });

Android通过改造将字符串发送到服务器

2 个答案: