Android客户端套接字。 UnknowHostException

Question

I have a working server application in JAVA (multithreaded) and a working client console application.

Now I'm trying to do an android client, however using Eclipse and the Android emulator I can't connect to my local server ....

• yes, I use 10.0.2.2 as my server ip.

• yes, Manifest file is modified with INTERNET permission.

    import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.IOException; import java.io.InputStreamReader; import java.io.OutputStreamWriter; import java.io.PrintWriter; import java.net.Socket; import java.net.UnknownHostException; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.ImageButton; import android.widget.TextView; import android.widget.Toast; public class RealApp extends Activity implements OnClickListener { private PrintWriter pw; private BufferedReader in; private boolean connected = false; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); if (!connected) { Thread cThread = new Thread(new ClientThread()); cThread.start(); } } public class ClientThread implements Runnable { public void run() { { Socket skt = null; try { skt = new Socket("l0.0.2.2", 1337); } catch (UnknownHostException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } catch (IOException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } String s = ""; String inString = ""; BufferedReader in = null; try { in = new BufferedReader(new InputStreamReader(skt.getInputStream())); } catch (IOException e2) { // TODO Auto-generated catch block e2.printStackTrace(); } PrintWriter pw = null; try { pw = new PrintWriter(skt.getOutputStream(), true); } catch (IOException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } do { try { inString = in.readLine(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } while(!s.equals("quit")); pw.close(); try { skt.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } }} 

During a debug, in the Log window I can notice a System.err message, an UnknowHostException for 10.0.2.2.

Answer 1

尝试创建一个InetAddress并使用采用InetAddress的Socket构造函数 ，这应该避免查找。