Android &引用；不幸的是，应用程序已停止；向Bluemix部署的Node.js应用发送httppost请求时出错

我正在创建一个Android应用程序，但在使用

httppost

方法将参数发送到Bluemix deployed Node.js服务器时，我收到了“不幸的是，应用程序已停止”错误。 在这个问题上有人能帮我吗

我有疑问，无法从Node.js接收到响应，票证链接：

Jave代码如下所示：

      package com.example.rest;

       import java.io.IOException;
       import java.io.UnsupportedEncodingException;
       import java.util.ArrayList;
       import java.util.List;
      import org.apache.http.HttpResponse;
      import org.apache.http.NameValuePair;
      import org.apache.http.client.ClientProtocolException;
      import org.apache.http.client.HttpClient;
     import org.apache.http.client.entity.UrlEncodedFormEntity;
      import org.apache.http.client.methods.HttpPost;
      import org.apache.http.impl.client.DefaultHttpClient;
      import org.apache.http.message.BasicNameValuePair;
    import android.support.v7.app.ActionBarActivity;
     import android.app.Dialog;
     import android.content.SharedPreferences;
     import android.os.Bundle;
     import android.util.Log;
      import android.view.Menu;
      import android.view.MenuItem;
      import android.view.View;
     import android.widget.Adapter;
     import android.widget.Button;
      import android.widget.EditText;
     import android.widget.TextView;
    import android.widget.Toast;

 public class MainActivity extends ActionBarActivity {


String url = "http://mobilefeedbackform.mybluemix.net/";
List<NameValuePair> params;
SharedPreferences pref;
Dialog reset;



@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Button breg1 = (Button) findViewById(R.id.buttonreg);

    breg1.setOnClickListener(new View.OnClickListener() {



        public void onClick(View v) {

            final EditText Name =(EditText) findViewById(R.id.editTextreg5);
            final EditText Email =(EditText) findViewById(R.id.editTextreg);
            final EditText Passwd =(EditText) findViewById(R.id.editTextreg2);

            if(Name.getText().toString().length()==0)
            {
                Toast.makeText(MainActivity.this,
                        "Please enter Name", Toast.LENGTH_LONG)
                        .show();
                return;
            }

            else if(Email.getText().toString().length()==0)
            {
                Toast.makeText(MainActivity.this,
                        "Please enter EmailId", Toast.LENGTH_LONG)
                        .show();
                return;
            }

            else if(Passwd.getText().toString().length()==0)
            {
                Toast.makeText(MainActivity.this,
                        "Please enter Password", Toast.LENGTH_LONG)
                        .show();
                return;
            }
            else
            {
                String nametxt = Name.getText().toString();
                String emailtxt = Email.getText().toString();
                String passwdtxt = Passwd.getText().toString();

             // Creating HTTP client
                HttpClient httpClient = new DefaultHttpClient();
                // Creating HTTP Post
                HttpPost httpPost = new HttpPost("http://mobilefeedbackform.mybluemix.net");

                // Building post parameters
                // key and value pair
                List<NameValuePair> nameValuePair = new ArrayList<NameValuePair>(3);
                nameValuePair.add(new BasicNameValuePair("name", nametxt));
                nameValuePair.add(new BasicNameValuePair("email", nametxt));
                nameValuePair.add(new BasicNameValuePair("password", passwdtxt));

                // Url Encoding the POST parameters
                try {
                    httpPost.setEntity(new UrlEncodedFormEntity(nameValuePair));
                } catch (UnsupportedEncodingException e) {
                    // writing error to Log
                    e.printStackTrace();
                }

                // Making HTTP Request
                try {
                    HttpResponse response = httpClient.execute(httpPost);

                    // writing response to log
                    Log.d("Http Response:", response.toString());
                } catch (ClientProtocolException e) {
                    // writing exception to log
                    e.printStackTrace();
                } catch (IOException e) {
                    // writing exception to log
                    e.printStackTrace();

                }




            }
            }



        });

}

  04-24 18:26:13.799: E/AndroidRuntime(528): FATAL EXCEPTION: main
04-24 18:26:13.799:     E/AndroidRuntime(528):android.os.NetworkOnMainThreadException
04-24 18:26:13.799: E/AndroidRuntime(528):  at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1099)
04-24 18:26:13.799: E/AndroidRuntime(528):  at java.net.InetAddress.lookupHostByName(InetAddress.java:391)
04-24 18:26:13.799: E/AndroidRuntime(528):  at java.net.InetAddress.getAllByNameImpl(InetAddress.java:242)
04-24 18:26:13.799: E/AndroidRuntime(528):  at java.net.InetAddress.getAllByName(InetAddress.java:220)
 04-24 18:26:13.799: E/AndroidRuntime(528):     at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:137)
 04-24 18:26:13.799: E/AndroidRuntime(528):     at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
  04-24 18:26:13.799: E/AndroidRuntime(528):    at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
  04-24 18:26:13.799: E/AndroidRuntime(528):    at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
  04-24 18:26:13.799: E/AndroidRuntime(528):    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
  04-24 18:26:13.799: E/AndroidRuntime(528):    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
 04-24 18:26:13.799: E/AndroidRuntime(528):     at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
  04-24 18:26:13.799: E/AndroidRuntime(528):    at com.example.rest.MainActivity$1.onClick(MainActivity.java:106)
  04-24 18:26:13.799: E/AndroidRuntime(528):    at android.view.View.performClick(View.java:3511)
   04-24 18:26:13.799: E/AndroidRuntime(528):   at android.view.View$PerformClick.run(View.java:14105)
   04-24 18:26:13.799: E/AndroidRuntime(528):   at android.os.Handler.handleCallback(Handler.java:605)
  04-24 18:26:13.799: E/AndroidRuntime(528):    at android.os.Handler.dispatchMessage(Handler.java:92)
  04-24 18:26:13.799: E/AndroidRuntime(528):    at android.os.Looper.loop(Looper.java:137)
  04-24 18:26:13.799: E/AndroidRuntime(528):    at android.app.ActivityThread.main(ActivityThread.java:4424)
  04-24 18:26:13.799: E/AndroidRuntime(528):    at java.lang.reflect.Method.invokeNative(Native Method)
  04-24 18:26:13.799: E/AndroidRuntime(528):    at java.lang.reflect.Method.invoke(Method.java:511)
  04-24 18:26:13.799: E/AndroidRuntime(528):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
  04-24 18:26:13.799: E/AndroidRuntime(528):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
   04-24 18:26:13.799: E/AndroidRuntime(528):   at dalvik.system.NativeStart.main(Native Method)

---

错误是因为您正在尝试在Android中的主线程上进行网络调用，并且正在激活策略以阻止它。您可以在stacktrace的这一行中看到这一点

android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork

---

您应该考虑在单独的线程上执行网络调用。Strictmode有助于为最终用户提供更好的体验。

在logcatI中发布stacktrace我猜您的应用程序已经停止！基于错误消息。请提供完整的错误消息和堆栈。另外，您是否已检查服务器节点应用程序是否仍在运行？查看

cf events

以查看您的应用程序正在经历的状态更改。我正在设备本身进行测试，因为我的模拟器有问题……。上面给出了错误日志。您可以发布更多信息吗？很难理解您的问题出在哪里。请看一下使用Asynctask将网络调用卸载到另一个线程，然后在任务完成时更新UI。