Hi,
I have written a code such that android client communicates
with servlets.That is username from android client is send to
servlets .And the username is printed(thru console) after receiving
in servlets. But i am getting unknown host exception. Please help me
to fix this problem. Otherwise please post a sample code such that
android client communicates with servlets.
Please see the android client and servlet code below.
Android client
=================================================
package com.google.android.ServerSample;
import java.io.DataOutputStream;
import java.io.OutputStream;
import java.net.URL;
import java.net.URLConnection;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
public class ServerSample extends Activity {
private static final String TAG = "Test";
/** Called when the activity is first created. */
protected static EditText username;
protected static EditText password;
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.login);
username = (EditText)findViewById(R.id.username);
password = (EditText)findViewById(R.id.password);
Button goButton = (Button)findViewById(R.id.login);
goButton.setOnClickListener(mGoListener);
}
private OnClickListener mGoListener = new OnClickListener()
{
public void onClick(View v)
{
String uname=username.getText().toString();
networkthread ob = new networkthread(uname);
}
};
}
class networkthread implements Runnable {
private static final String TAG = "Test";
String uname;
public networkthread(String uname) {
this.uname = uname;
Thread t = new Thread(this);
t.start();
}
public void run(){
Log.v(TAG, "inside sub thread");
try {
URL ob = new URL("http://localhost:8084/SampleServlets/
TestServlet");
URLConnection conn = ob.openConnection();
conn.setDoInput(true);
conn.setDoOutput(true);
OutputStream out = conn.getOutputStream();
DataOutputStream dos = new DataOutputStream(out);
dos.writeInt(uname.getBytes().length);
dos.write(uname.getBytes(),0,uname.getBytes().length);
dos.flush();
dos.close();
conn = null;
}catch(Exception e){
Log.v(TAG, "Exception:" +e);
e.printStackTrace();
}
}
}
====================================
Servlet code
===================================
import java.io.*;
import java.net.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class TestServlet extends HttpServlet {
private InputStream is = null;
private OutputStream os = null;
private DataInputStream dis = null;
private DataOutputStream dos = null;
boolean isValid = false;
protected void processRequest(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
try{
is = request.getInputStream();
dis = new DataInputStream(is);
int len = dis.readInt();
byte data[] = new byte[len];
dis.read(data,0,len);
String userName = new String(data);
System.out.println("username:" +userName);
is.close(); dis.close();
} catch(Exception e){
System.out.println(e);
}
}
protected void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
protected void doPost(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
public String getServletInfo() {
return "Short description";
}
}
==================
Thanks and Regards,
kannan
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google
Groups "Android Beginners" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[EMAIL PROTECTED]
For more options, visit this group at
http://groups.google.com/group/android-beginners?hl=en
-~----------~----~----~----~------~----~------~--~---
