Question

我刚学习Retrofit和Android开发。我想做的是从网站向服务器发送一个相当复杂的JSON对象，并能够使用Retrofit作为我的Android应用程序的Java对象来检索它。

所以基本上是这样的，

网站JSON --Ajax Call - ＆gt;服务器 - 改造 - ＆gt; Android应用程序（Java对象/集合）

哪个服务器最好设置它？关于如何做到这一点还有什么好的参考资料吗？

谢谢

Answer 1

借助改造和android，您只需要几件事

Java模型

public class User {
    private String name;
    private String password;

    public User(String name, String password) {
        this.name = name;
        this.password = password;
    }
//Getters and setters
//...
}

改造界面

public interface APIService {
    @FormUrlEncoded
    @Headers("Accept: application/json")
    @POST("register")
    Call<AuthRegister> createUser(
            @Field("name") String name,
            @Field("password") String password
    );
}

改装回调

public class AuthRegister {
    @SerializedName("message")
    @Expose
    private String message;
    @SerializedName("errors")
    @Expose
    private Errors errors;

  public String getMessage() {
        return message;
    }
  public Errors getErrors() {
        return errors;
    }
}

网络客户端

public class NetworkClient {
    public static Retrofit retrofit;
    /*
    This public static method will return Retrofit client
    anywhere in the appplication
    */
    public static Retrofit getRetrofitClient() {
        //If condition to ensure we don't create multiple retrofit instances in a single application
        if (retrofit == null) {
            //Defining the Retrofit using Builder
            HttpLoggingInterceptor interceptor = new HttpLoggingInterceptor();
            interceptor.level(HttpLoggingInterceptor.Level.BODY);
            OkHttpClient client = new OkHttpClient.Builder()
//                    .addInterceptor(interceptor)
                    .connectTimeout(30, TimeUnit.MINUTES)
                    .build();

            retrofit = new Retrofit.Builder()
                    .baseUrl(Config.BASE_URL) //This is the only mandatory call on Builder object.
                    .client(client)
                    .addConverterFactory(GsonConverterFactory.create()) // Convertor library used to convert response into POJO
                    .build();
        }
        return retrofit;
    }
}

您要在活动中进行的呼叫以显示响应或保存数据

private void saveUser(String name, String password){
       Retrofit retrofit = NetworkClient.getRetrofitClient();
                        APIService service = retrofit.create(APIService.class);

                        Call<AuthRegister> call = service.createUser(name, password);
                        call.enqueue(new Callback<AuthRegister>() {
                            @Override
                            public void onResponse(Call<AuthRegister> call, Response<AuthLogin> response) {
                                if (response.code() == 200) {
                                    if (response.body().getMessage() != null) {
                                        Toast.makeText(mContext, "Success", Toast.LENGTH_SHORT).show();
                                    } else {
                                        Toast.makeText(mContext, "Could not save user", Toast.LENGTH_LONG).show();
                                    }
                                } else {
                                    Toast.makeText(mContext, "Could not save user", Toast.LENGTH_LONG).show();
                                }
                            }

                            @Override
                            public void onFailure(Call<AuthRegister> call, Throwable t) {
                                new PrefManager(mContext).clearUser();
                                Log.e(TAG, t.toString());
                                Toast.makeText(mContext, "Could not save user", Toast.LENGTH_SHORT).show();
                            }
                        });
}

Answer 2

您可以根据需要使用任何服务器。任何复杂的JSON都可以通过改造库来处理。请查看以下链接Retrofit android example web services

如何为我的应用程序设置改造？

2 个答案: