android - Android:HTTPCLIENT POST-无法将数据发送到服务器

Question

您好，我正在尝试使用httpclient将数据发送到服务器。

这是我的代码

public class MainActivity extends Activity implements OnClickListener {
private String TAG;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    Button press = (Button) findViewById(R.id.button1);
    press.setOnClickListener(this); 
}

@Override
public void onClick(View v) {
    switch (v.getId()) {
    case R.id.button1:

        String usrName = ((EditText) findViewById(R.id.usrName)).getText()
                .toString().trim();
        String age = ((EditText) findViewById(R.id.age)).getText()
                .toString().trim();

        Toast.makeText(getApplicationContext(),
                "username:: " + usrName + "---Age::" + age,
                Toast.LENGTH_SHORT).show();

        // Create a new HttpClient and Post Header
        HttpClient httpclient = new DefaultHttpClient();

        HttpPost httppost = new HttpPost("http://192.168.1.40"); 
        String resp = null;

        try {
            // create data to POST
            List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(
                    5);
            nameValuePairs.add(new BasicNameValuePair("UserName", usrName));
            nameValuePairs.add(new BasicNameValuePair("Age", age));

            httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); 

            // Execute HTTP Post Request
            HttpResponse response = httpclient.execute(httppost); 

            resp = response.toString();

        } catch (ClientProtocolException e) {
            System.out.println("---" + e.getMessage());
        } catch (IOException e1) {
            System.out.println("---" + e1.getMessage());
        }

        Log.i(TAG, "RTT inside post-data: " + time_passed);

        Log.i(TAG, resp.toString());

        break;
    case R.id.send:

    default:
        break;
    }

}

}

我在logcat中收到此错误

 06-07 18:23:45.650: E/AndroidRuntime(2387): FATAL EXCEPTION: main
 06-07 18:23:45.650: E/AndroidRuntime(2387): android.os.NetworkOnMainThreadException
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1099)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:84)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at libcore.io.IoBridge.connectErrno(IoBridge.java:127)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at libcore.io.IoBridge.connect(IoBridge.java:112)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:459)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at java.net.Socket.connect(Socket.java:842)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:119)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:144)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at com.sakeesoft.android.MainActivity.onClick(MainActivity.java:104)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at android.view.View.performClick(View.java:3511)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at android.view.View$PerformClick.run(View.java:14105)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at android.os.Handler.handleCallback(Handler.java:605)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at android.os.Handler.dispatchMessage(Handler.java:92)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at android.os.Looper.loop(Looper.java:137)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at android.app.ActivityThread.main(ActivityThread.java:4424)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at java.lang.reflect.Method.invokeNative(Native Method)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at java.lang.reflect.Method.invoke(Method.java:511)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
 06-07 18:23:45.650: E/AndroidRuntime(2387):    at dalvik.system.NativeStart.main(Native Method)

请帮我知道HTTPClient的用处。
谢谢..

Answer 1

当应用程序尝试在其主线程上执行联网操作时引发的异常。

使用asynctask或Thread类进行网络调用。