android - 使用 Retrofit 时出现 SocketTimeOut 异常

Question

我只是尝试使用 Retrofit 进行 post api 调用。服务器正在响应正确的数据。我与 Postman (Chrome) 进行了核对。我的代码如下

公共(public)类 MainActivity 扩展 Activity 实现 retrofit2.Callback>{

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


  final OkHttpClient okHttpClient = new OkHttpClient.Builder()
            .connectTimeout(6, TimeUnit.MINUTES)
            .readTimeout(6, TimeUnit.MINUTES)
            .writeTimeout(6, TimeUnit.MINUTES)
            .build();


    Gson gson = new GsonBuilder()
            .setDateFormat("yyyy-MM-dd'T'HH:mm:ssZ")
            .create();
    Retrofit retrofit = new Retrofit.Builder()
            .baseUrl("http://kokanplaces.com/")
            .addConverterFactory(GsonConverterFactory.create(gson)).client(okHttpClient)
            .build();

    // prepare call in Retrofit 2.0

    ApiInterface apiService =
            ApiClient.getClient().create(ApiInterface.class);

    Call<List<CityModel>> call = apiService.getCitiesList();;
    //asynchronous call
    call.enqueue(this);
}


@Override
public void onResponse(Call<List<CityModel>> call, Response<List<CityModel>> response) {
    int code = response.code();
    if (code == 200) {
         for (CityModel cityModel : response.body()) {
               System.out.println(
                        cityModel.getCityname() + " (" + cityModel.getCityId() + ")");
            }           


    } else {
        Toast.makeText(this, "Did not work: " + String.valueOf(code), Toast.LENGTH_LONG).show();
    }

}

@Override
public void onFailure(Call<List<CityModel>> call, Throwable t) {
    Toast.makeText(this, "failure", Toast.LENGTH_LONG).show();
    System.out.println(t.fillInStackTrace());
    t.printStackTrace();

}

public interface ApiInterface {
@POST("wp-json/getCities")
Call<List<CityModel>> getCitiesList();

每次它都抛出套接字超时异常。

任何解决方案都会有很大帮助。

Answer 1

我以前遇到过像你这样的问题。我通过添加自定义 OkHttpClient 来修复:

Constants.TIMEOUT_CONNECTION = 60;
private OkHttpClient getOkHttpClient() {
        final OkHttpClient okHttpClient = new OkHttpClient.Builder()
                .readTimeout(0, TimeUnit.NANOSECONDS)
                .connectTimeout(Constants.TIMEOUT_CONNECTION, TimeUnit.SECONDS)
                .writeTimeout(Constants.TIMEOUT_CONNECTION, TimeUnit.SECONDS)
//                .sslSocketFactory(getSSLSocketFactory())
                .build();
        return okHttpClient;
    }

和retrofitAdapter:

retrofitAdapter = new Retrofit.Builder()
                        .baseUrl(ConstantApi.BASE_URL)
                        .addConverterFactory(GsonConverterFactory.create(gson))
                        .client(getOkHttpClient())
                        .build();

记住 readTimeout 是 0，我使用的是 retrofit 2.1.0。 retrofit 的默认超时时间为 10 秒。我尝试将 readTimeout 设置为 60 秒但没有效果。