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您好我正在尝试从我的 MVC asp.net 获取一个 json 对象。

我收到一个错误

            StringBuilder url = new StringBuilder(URL);

    HttpGet get = new HttpGet (url.toString());

    HttpResponse r = client.execute(get);
    int status = r.getStatusLine().getStatusCode();

    if(status == 200)
    {
        HttpEntity e = r.getEntity();
        String data = EntityUtils.toString(e);

        JSONArray timeline = new JSONArray(data);
        JSONObject last = timeline.getJSONObject(0);

        return last;
    }
    else 
    {
        Toast.makeText(Authenticate.this, "error", Toast.LENGTH_LONG);
        return null;
    }

错误：

Java.IO 异常。

             public class Read extends AsyncTask <String,Integer,String>
      {

        @Override
        protected String doInBackground(String... params) {
            // TODO Auto-generated method stub
            try{
                json = Verify();
                return json.getString(params[0]);
            }
            catch (ClientProtocolException e)
            {               
            }
            catch (IOException e)
            {               
            }
            catch (JSONException e)
            {

            }
            return null;
        }

我目前正在通过 localhost 连接。

问题发生在以下行： HttpResponse r = client.execute(get);

它没有执行，VM 上的应用程序正在崩溃。

我已将代码修改为如下所示，但仍然出现相同的错误：

   public JSONObject Verify(HttpResponse r) throws ClientProtocolException,                               IOException, JSONException
{
    //StringBuilder url = new StringBuilder(URL);
    //Adds the pin and IMEI.
    //url.append(b);
    //HttpGet get = new HttpGet (url.toString());

    //HttpResponse r = client.execute(get);
    int status = r.getStatusLine().getStatusCode();

    if(status == 200)
    {
        HttpEntity e = r.getEntity();
        String data = EntityUtils.toString(e);

        JSONArray timeline = new JSONArray(data);
        JSONObject last = timeline.getJSONObject(0);

        return last;
    }
    else 
    {
        Toast.makeText(Authenticate.this, "error", Toast.LENGTH_LONG);
        return null;
    }

}

    public class Read extends AsyncTask <String,Integer,String>
    {

        @Override
        protected String doInBackground(String... params) {
            // TODO Auto-generated method stub
            try{
                HttpResponse r = client.execute(get);
                json = Verify(r);
                return json.getString(params[0]);
            }
            catch (ClientProtocolException e)
            {               
            }
            catch (IOException e)
            {               
            }
            catch (JSONException e)
            {

            }
            return null;
        }

Log Cat 给了我这个错误：07-10 20:53:23.578: E/ActivityThread(661): Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@40d17eb0 那原定于此处 07-10 20:53:23.578: E/ActivityThread(661): android.app.ServiceConnectionLeaked: Service com.android.exchange.ExchangeService 已泄露 ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@40d17eb0最初绑定在这里 07-10 20:53:23.578: E/ActivityThread(661): at android.app.LoadedApk$ServiceDispatcher.(LoadedApk.java:969) 07-10 20:53:23.578: E/ActivityThread( 661): 在 android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:863) 07-10 20:53:23.578: E/ActivityThread(661): 在 android.app.ContextImpl.bindService(ContextImpl.java:1418) 07 -10 20：53：23.578：E/ActivityThread(661): 在 android.app.ContextImpl.bindService(ContextImpl.java:1407) 07-10 20:53:23.578: E/ActivityThread(661): 在 android.content.ContextWrapper.bindService(ContextWrapper.java :473) 07-10 20:53:23.578: E/ActivityThread(661): 在 com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:157) 07-10 20:53:23.578: E/ActivityThread (661): 在 com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:145) 07-10 20:53:23.578: E/ActivityThread(661): 在 com.android.emailcommon.service.ServiceProxy。测试（ServiceProxy.java:191）07-10 20:53:23.578：E/ActivityThread（661）：在 com.android.exchange.ExchangeService$7.run（ExchangeService.java:1850）07-10 20:53:23.578 : E/ActivityThread(661): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:551) 07-10 20:53:23.578: E/ActivityThread(661): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:549) 07-10 20:53:23.578: E/ActivityThread(661): at android.os.AsyncTask$2.call(AsyncTask.java:287) 07 -10 20:53:23.578: E/ActivityThread(661): 在 java.util.concurrent.FutureTask.run(FutureTask.java:234) 07-10 20:53:23.578: E/ActivityThread(661): 在 java .util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) 07-10 20:53:23.578: E/ActivityThread(661): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) 07-10 20:53:23.578: E/ActivityThread(661): 在 java.lang.Thread.run(Thread.java:856) 07-10 20:53:23.588: E/StrictMode(661): null 07- 10 20:53:23.588: E/StrictMode(661): android.app.ServiceConnectionLeaked: Service com.android.exchange.ExchangeService 已泄露 ServiceConnection com.android.emailcommon.service。ServiceProxy$ProxyConnection@40d17eb0 最初绑定在这里 07-10 20:53:23.588: E/StrictMode(661): at android.app.LoadedApk$ServiceDispatcher.(LoadedApk.java:969) 07-10 20:53:23.588 : E/StrictMode(661): 在 android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:863) 07-10 20:53:23.588: E/StrictMode(661): 在 android.app.ContextImpl.bindService(ContextImpl. java:1418) 07-10 20:53:23.588: E/StrictMode(661): 在 android.app.ContextImpl.bindService(ContextImpl.java:1407) 07-10 20:53:23.588: E/StrictMode(661) : 在 android.content.ContextWrapper.bindService(ContextWrapper.java:473) 07-10 20:53:23.588: E/StrictMode(661): 在 com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:157 ) 07-10 20:53:23.588: E/StrictMode(661): 在 com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:145) 07-10 20:53:23.588:E/StrictMode(661): 在 com.android.emailcommon.service.ServiceProxy.test(ServiceProxy.java:191) 07-10 20:53:23.588: E/StrictMode(661): 在 com.android.exchange.ExchangeService $7.run(ExchangeService.java:1850) 07-10 20:53:23.588: E/StrictMode(661): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:551) 07-10 20 :53:23.588: E/StrictMode(661): 在 com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:549) 07-10 20:53:23.588: E/StrictMode(661): 在 android .os.AsyncTask$2.call(AsyncTask.java:287) 07-10 20:53:23.588: E/StrictMode(661): at java.util.concurrent.FutureTask.run(FutureTask.java:234) 07-10 20:53:23.588: E/StrictMode(661): 在 java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) 07-10 20:53:23.588: E/StrictMode(661): 在 java.util .concurrent.ThreadPoolExecutor$Worker。运行（ThreadPoolExecutor.java:573）07-10 20:53:23.588：E/StrictMode（661）：在 java.lang.Thread.run（Thread.java:856）07-10 20:53:23.588：W/ ActivityManager(291): Unbind failed: 找不到 android.os.BinderProxy@4100de60 的连接

4

1 回答 1

1

没有更多信息很难判断，但您可能在您的 UI 线程上运行它，这是不允许的。如果是这种情况，您将需要使用 AsynTask。

于 2013-07-10T18:21:00.067 回答