http連接中的調試問題

我很難確定我的代碼中存在什麼問題。我被困在這個部分，調試器有點神祕。請參閱隨附代碼：清單文件有http連接中的調試問題

<uses-permission android:name="android.permission.INTERNET"/>

下一步是開始時的代碼，我已經打上了System.out的「異常1」和「異常2兩層的try/catch異常「到quicky在logcat的

package com.example.httpexample; 

import android.os.Bundle; 
import android.widget.TextView; 
import android.app.Activity; 

public class HttpExample extends Activity { 

TextView httpStuff; 


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

    httpStuff = (TextView) findViewById(R.id.tvHttp); 
    GetMethodEx test = new GetMethodEx(); 
    String returned; 
    try { 
     returned = test.getInternetData(); 
     httpStuff.setText(returned); 
    } catch (Exception e) { 
     System.out.println("Exception 1"); 
     e.printStackTrace(); 
    } 
    } 
}

代碼的第二塊是實際的HTTP類識別

package com.example.httpexample; 

import java.io.BufferedReader; 
import java.io.InputStreamReader; 
import java.net.URI; 

import org.apache.http.HttpResponse; 
import org.apache.http.client.HttpClient; 
import org.apache.http.client.methods.HttpGet; 
import org.apache.http.impl.client.DefaultHttpClient; 

public class GetMethodEx { 

public String getInternetData() throws Exception{ 
    BufferedReader in = null; 
    String data = null; 
    try{ 
     HttpClient client = new DefaultHttpClient(); 
     URI website = new URI("http://google.com"); 
     HttpGet request = new HttpGet(); 
     request.setURI(website); 
     HttpResponse response = client.execute(request); 
     in = new BufferedReader(new InputStreamReader(response.getEntity().getContent())); 
     StringBuffer sb = new StringBuffer(""); 
     String l = ""; 
     String nl = System.getProperty("line.separator"); 
     while ((l = in.readLine()) !=null){ 
      sb.append(l + nl); 
     } 
     in.close(); 
     data = sb.toString(); 
     return data; 
    } finally { 
     if (in != null){ 
      try{ 
       in.close(); 
       return data; 
      } catch (Exception e) { 
       System.out.println("Exception 2"); 
       e.printStackTrace(); 
      } 
     } 
    } 
    } 
}

我的問題是，我無法確定我在錯誤的地方看到使用調試器的問題是什麼，那裏有更多的信息？這是我在異常之後得到的一小部分logcat輸出，但是我不知道是否需要解釋它，或者是否有更多的信息在其他地方，請提前致謝！

07-19 21:37:30.916: I/System.out(4987): Exception 1 
07-19 21:37:30.916: W/System.err(4987): android.os.NetworkOnMainThreadException 
07-19 21:37:30.936: W/System.err(4987):  at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117) 
07-19 21:37:30.936: W/System.err(4987):  at java.net.InetAddress.lookupHostByName(InetAddress.java:385) 
07-19 21:37:30.936: W/System.err(4987):  at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236) 
07-19 21:37:30.947: W/System.err(4987):  at java.net.InetAddress.getAllByName(InetAddress.java:214) 
07-19 21:37:30.947: W/System.err(4987):  at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:137) 
07-19 21:37:30.956: W/System.err(4987):  at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164) 
07-19 21:37:30.966: W/System.err(4987):  at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119) 
07-19 21:37:30.966: W/System.err(4987):  at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360) 
07-19 21:37:30.966: W/System.err(4987):  at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555) 
07-19 21:37:30.976: W/System.err(4987):  at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487) 
07-19 21:37:30.976: W/System.err(4987):  at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465) 
07-19 21:37:30.986: W/System.err(4987):  at com.example.httpexample.GetMethodEx.getInternetData(GetMethodEx.java:22) 
07-19 21:37:30.986: W/System.err(4987):  at com.example.httpexample.HttpExample.onCreate(HttpExample.java:21) 
07-19 21:37:30.996: W/System.err(4987):  at android.app.Activity.performCreate(Activity.java:5104) 
07-19 21:37:30.996: W/System.err(4987):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080) 
.. 
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.. and more

來源

2013-07-19 user2566468