Win a copy of Java 9 Revealed this week in the Features new in Java 9 forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic

debug code applet servlet communication  RSS feed

 
mani suri
Greenhorn
Posts: 11
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
hello all
I am facing a problem in applet servlet communication , i am enclosing two code for applet servlet communication . It is giving me EOF Exception .
Please help me debuuging it.its urgent
enclosed codes are :
//Applet Code
import java.applet.*;
import java.awt.*;
import java.net.*;
import java.io.*;
import java.awt.event.*;
import java.util.*;
public class sappletm1 extends Applet implements ActionListener
{
private String message;
TextField t;
Label l;
Button b;
Image ash;
URLConnection uc = null;
String text;
public void init()
{
t = new TextField(20);
l = new Label("Search");
b = new Button("Press");
b.addActionListener(this);
add(l);
add(t);
add(b);
try
{
uc = new URL("http://localhost:8080/servlet/ServletAppletm1").openConnection();
uc.setUseCaches(false);
uc.setDoOutput(true);
uc.setDoInput(true);
uc.setRequestProperty("Content-type", "application/octet-stream");
uc.connect();
}
catch(Exception e)
{
message = e.toString()+"first";
repaint();
}

}

public void actionPerformed(ActionEvent ae)
{
if(ae.getSource()==b)
{
text = t.getText();

try
{
ObjectOutputStream objOu = new ObjectOutputStream(uc.getOutputStream());
objOu.writeObject(text);
objOu.flush();
objOu.close();
}

catch(Exception e)
{
message = e.toString()+"second";
repaint();
}

try
{

ObjectInputStream objIn = new ObjectInputStream(uc.getInputStream());
message = (String) objIn.readObject();
t.setText("");
repaint();
}
catch(Exception e)
{
message= e.toString()+""+"third ";
repaint();
}
}
}

public void paint(Graphics g)
{
g.drawString (message, 25, 75);
// g.drawString (text, 25, 75);
//g.drawImage(ash,0,0,this);
}
}

--------------------------------------------------------------------------------------------------------------------------------
//Servlet code

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;
public class ServletAppletm1 extends HttpServlet
{
String message,client,mani;
Statement s;
Connection c;
PreparedStatement p;
ResultSet rs;
public void init(ServletConfig config) throws ServletException
{
super.init(config);
try
{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
c= DriverManager.getConnection("jdbc dbc:mapping");
s = c.createStatement();
}
//_______________________try ends____________________
catch(Exception ee)
{
System.out.println("Check your dsn connection!"+ee);
}
}

public void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException
{
res.setContentType("application.octet-stream");
try
{
ObjectInputStream objIn = new ObjectInputStream(req.getInputStream());
client = (String) objIn.readObject();

}
catch(Exception e)
{
e.printStackTrace();
}
try
{
rs.next();
rs = s.executeQuery("select imgsource from map where colony = '" + client + "'");
mani = rs.getString("imgsource");

if (mani!=null)
{
ObjectOutputStream objOu = new ObjectOutputStream(res.getOutputStream());
objOu.writeObject(mani);
objOu.close();
}
else
{

ObjectOutputStream objOu = new ObjectOutputStream(res.getOutputStream());
objOu.writeObject("your mani is null");
objOu.close();
}
}
catch(Exception e)
{
e.printStackTrace();
}
}
}
______________________________________________________________________
The gives me problem when i press the button it diaplays the Exception (EOFEXCEPTION). I want when i press the button the applet text field contents should go to servlet and servlet while checking into the data base so give path of the image .
the table i have construted in acess consist of two coloums one by the name of colony other by the name of imgsource.
waiting for your reply
thanks
mani
 
Don't get me started about those stupid light bulbs.
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!