Использование OKHTTP в Android для запроса службы GET из ASP.NET WebApi

Question

У меня есть эта проблема, которая заставляла меня думать, я использую OkHTTp для подключения к моей службе WebAPi. Проблема в том, что я продолжаю получать «null», результат на стороне андроида. Вот Android код на стороне:

public class OkHttpHandlerIncoming extends AsyncTask<String, Void, String> { 

    OkHttpClient client = new OkHttpClient(); 
    String URL = "http://localhost:8306/api/uconnectservice"; 

    String JsonStringObject; 

    public OkHttpHandlerIncoming() { 
     // TODO Auto-generated constructor stub 
    } 

    @Override 
    protected String doInBackground(String... params) { 



     Request request = new Request.Builder().url(params[0]).build(); 
     // Request request = new 
     // Request.Builder().url(params[0]).post(formBody).build(); 
     try { 
      Response response = client.newCall(request).execute(); 
      Log.e("Execute Request", request.toString()); 
      if (!response.isSuccessful()) 
       throw new IOException("Unexpected code " + response.toString()); 
      return response.body().string(); 

     } catch (Exception e) { 
     } 

     return null; 
    } 

} 

и я сделать вызов из основного потока следующим

public void DATAFROMSERVICE(){ 
     StringBuilder outputText = new StringBuilder("Result:"); 

     OkHttpHandlerIncoming client = new OkHttpHandlerIncoming(); 

     String result = null; 
     try { 
      result = client.execute().get(); 
     } catch (InterruptedException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } catch (ExecutionException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 
     Log.e("From Service", outputText.append(result + "\n").toString()); 

    } 
//////////////////////////////////////// 
Also here is the code from the server side 

    public class UConnectServiceController : ApiController 
    { 
     private IUconnectRepository _UconnectHandler; 

     public UConnectServiceController() 
     { 
      _UconnectHandler = new UconnectRepository(); 
     } 

     public UConnectServiceController(IUconnectRepository repository) 
     { 
      if (_UconnectHandler == null) 
      { 
       throw new ArgumentNullException("repository"); 
      } 
      _UconnectHandler = repository; 
     } 

     /////I am calling this service-> GET api/uconnectservice 
     public List<AcountTypesRegistered> Get() 
     { 
      return _UconnectHandler.GetAll(); 
     } 

код продолжается ...

Пожалуйста, может кто-то наставит меня на то, что происходит не так или любые лучшие предложения Thnks

КСТАТИ вот мой кот Войти:

12-13 03:20:54.360: W/System.err(26811): at java.util.concurrent.FutureTask.report(FutureTask.java:93) 
12-13 03:20:54.360: W/System.err(26811): at java.util.concurrent.FutureTask.get(FutureTask.java:163) 
12-13 03:20:54.360: W/System.err(26811): at android.os.AsyncTask.get(AsyncTask.java:483) 
12-13 03:20:54.360: W/System.err(26811): at com.nickSoft.unics_alpha.accountdetails.DATAFROMSERVICE(accountdetails.java:198) 
12-13 03:20:54.360: W/System.err(26811): at com.nickSoft.unics_alpha.accountdetails.onCreate(accountdetails.java:120) 
12-13 03:20:54.360: W/System.err(26811): at android.app.Activity.performCreate(Activity.java:5231) 
12-13 03:20:54.360: W/System.err(26811): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) 
12-13 03:20:54.360: W/System.err(26811): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2210) 
12-13 03:20:54.360: W/System.err(26811): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2296) 
12-13 03:20:54.360: W/System.err(26811): at android.app.ActivityThread.access$800(ActivityThread.java:145) 
12-13 03:20:54.360: W/System.err(26811): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1243) 
12-13 03:20:54.360: W/System.err(26811): at android.os.Handler.dispatchMessage(Handler.java:102) 
12-13 03:20:54.360: W/System.err(26811): at android.os.Looper.loop(Looper.java:136) 
12-13 03:20:54.360: W/System.err(26811): at android.app.ActivityThread.main(ActivityThread.java:5136) 
12-13 03:20:54.360: W/System.err(26811): at java.lang.reflect.Method.invokeNative(Native Method) 
12-13 03:20:54.360: W/System.err(26811): at java.lang.reflect.Method.invoke(Method.java:515) 
12-13 03:20:54.360: W/System.err(26811): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:819) 
12-13 03:20:54.360: W/System.err(26811): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:635) 
12-13 03:20:54.360: W/System.err(26811): at dalvik.system.NativeStart.main(Native Method) 
12-13 03:20:54.360: W/System.err(26811): Caused by: java.lang.ArrayIndexOutOfBoundsException: length=0; index=0 
12-13 03:20:54.360: W/System.err(26811): at com.nickSoft.Connections.OkHttpHandlerIncoming.doInBackground(OkHttpHandlerIncoming.java:53) 
12-13 03:20:54.360: W/System.err(26811): at com.nickSoft.Connections.OkHttpHandlerIncoming.doInBackground(OkHttpHandlerIncoming.java:1) 
12-13 03:20:54.360: W/System.err(26811): at android.os.AsyncTask$2.call(AsyncTask.java:288) 
12-13 03:20:54.360: W/System.err(26811): at java.util.concurrent.FutureTask.run(FutureTask.java:237) 
12-13 03:20:54.360: W/System.err(26811): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231) 
12-13 03:20:54.360: W/System.err(26811): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112) 
12-13 03:20:54.360: W/System.err(26811): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587) 
12-13 03:20:54.360: W/System.err(26811): at java.lang.Thread.run(Thread.java:841) 
12-13 03:20:54.360: E/From Service(26811): Result:null 
12-13 03:20:54.360: W/dalvikvm(26811): threadid=11: thread exiting with uncaught exception (group=0x415ced88) 
12-13 03:20:54.360: E/test(26811): Exception 
12-13 03:20:54.370: E/AndroidRuntime(26811): FATAL EXCEPTION: AsyncTask #1 
12-13 03:20:54.370: E/AndroidRuntime(26811): Process: com.nickSoft.unics_alpha, PID: 26811 
12-13 03:20:54.370: E/AndroidRuntime(26811): java.lang.RuntimeException: An error occured while executing doInBackground() 
12-13 03:20:54.370: E/AndroidRuntime(26811): at android.os.AsyncTask$3.done(AsyncTask.java:300) 
12-13 03:20:54.370: E/AndroidRuntime(26811): at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355) 
12-13 03:20:54.370: E/AndroidRuntime(26811): at java.util.concurrent.FutureTask.setException(FutureTask.java:222) 
12-13 03:20:54.370: E/AndroidRuntime(26811): at java.util.concurrent.FutureTask.run(FutureTask.java:242) 
12-13 03:20:54.370: E/AndroidRuntime(26811): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231) 
12-13 03:20:54.370: E/AndroidRuntime(26811): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112) 
12-13 03:20:54.370: E/AndroidRuntime(26811): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587) 
12-13 03:20:54.370: E/AndroidRuntime(26811): at java.lang.Thread.run(Thread.java:841) 
12-13 03:20:54.370: E/AndroidRuntime(26811): Caused by: java.lang.ArrayIndexOutOfBoundsException: length=0; index=0 
12-13 03:20:54.370: E/AndroidRuntime(26811): at com.nickSoft.Connections.OkHttpHandlerIncoming.doInBackground(OkHttpHandlerIncoming.java:53) 
12-13 03:20:54.370: E/AndroidRuntime(26811): at com.nickSoft.Connections.OkHttpHandlerIncoming.doInBackground(OkHttpHandlerIncoming.java:1) 
12-13 03:20:54.370: E/AndroidRuntime(26811): at android.os.AsyncTask$2.call(AsyncTask.java:288) 
12-13 03:20:54.370: E/AndroidRuntime(26811): at java.util.concurrent.FutureTask.run(FutureTask.java:237) 
12-13 03:20:54.370: E/AndroidRuntime(26811): ... 4 more 

/// ПОСЛЕ CODE EDIT ПОЛУЧИТЬ ЭТУ LogCat ////////////////

12-13 03:58:36.640: I/ActivityManager(28324): Timeline: Activity_idle id: android.os.BinderProxy@41a7bde0 time:12169583 
12-13 03:59:30.560: W/System.err(29371): java.net.ConnectException: Failed to connect to localhost/127.0.0.1:8306 
12-13 03:59:30.560: W/System.err(29371): at okhttp3.internal.connection.RealConnection.connectSocket(RealConnection.java:189) 
12-13 03:59:30.560: W/System.err(29371): at okhttp3.internal.connection.RealConnection.buildConnection(RealConnection.java:173) 
12-13 03:59:30.560: W/System.err(29371): at okhttp3.internal.connection.RealConnection.connect(RealConnection.java:114) 
12-13 03:59:30.560: W/System.err(29371): at okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:193) 
12-13 03:59:30.560: W/System.err(29371): at okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:129) 
12-13 03:59:30.560: W/System.err(29371): at okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:98) 
12-13 03:59:30.570: W/System.err(29371): at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42) 
12-13 03:59:30.570: W/System.err(29371): at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92) 
12-13 03:59:30.570: W/System.err(29371): at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67) 
12-13 03:59:30.570: W/System.err(29371): at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:109) 
12-13 03:59:30.570: W/System.err(29371): at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92) 
12-13 03:59:30.570: W/System.err(29371): at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67) 
12-13 03:59:30.570: W/System.err(29371): at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93) 
12-13 03:59:30.570: W/System.err(29371): at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92) 
12-13 03:59:30.570: W/System.err(29371): at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:124) 
12-13 03:59:30.570: W/System.err(29371): at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92) 
12-13 03:59:30.570: W/System.err(29371): at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67) 
12-13 03:59:30.570: W/System.err(29371): at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:170) 
12-13 03:59:30.570: W/System.err(29371): at okhttp3.RealCall.access$100(RealCall.java:33) 
12-13 03:59:30.570: W/System.err(29371): at okhttp3.RealCall$AsyncCall.execute(RealCall.java:120) 
12-13 03:59:30.570: W/System.err(29371): at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32) 
12-13 03:59:30.570: W/System.err(29371): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112) 
12-13 03:59:30.570: W/System.err(29371): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587) 
12-13 03:59:30.570: W/System.err(29371): at java.lang.Thread.run(Thread.java:841) 

Answer 1

Ваша ошибка исходит от этой линии -

Request request = new Request.Builder().url(params[0]).build(); 

, потому что вы не пропускании String к вашему AsyncTask здесь -

result = client.execute().get(); 

на основе кода, я бы предположил, что вы г пройти URL там -

result = client.execute().get(URL); 

OkHttp может выполнять команды в фоновом режиме для вас. Ваш код был бы намного проще, если вместо вызова execute в AsyncTask вы должны были позволить OkHttp обрабатывать фоновое задание для вас через asynchronous call с использованием enqueue.