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Servlets

problem with this cookie program, getting a blank output

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posted 16 years ago

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import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
 
public class RetrieveCookies extends HttpServlet 
{
 
protected void doGet(HttpServletRequest request,HttpServletResponse response) throws ServletException,IOException
        {
          
          response.setContentType("text/html");
          
          PrintWriter out=response.getWriter();
          
          Cookie [] cookies=request.getKookies();
            
          out.println("<HTML><HEAD><TITLE>");
          out.println("Cookie using servlets");
          out.println("</TITLE></HEAD></BODY>");
            
          if(cookies!=null)
           {
              for(int i=0;i<cookies.length;i++)
                {
               Cookie thisCookie=cookies[i];
                
                if(thisCookie.getName().equals("myCookie")&& thisCookie.getValue().equals("FirstCookie"))
                 {
            out.println("<BR><B>Cookie Name: " +thisCookie.getName()+ "Cookie Value: " +thisCookie.getValue() + "</B>");
}
 
else {
 
out.println("<BR>Cookie Name: " +thisCookie.getName() + "CookieValue : " +thisCookie.getValue());
}
}
}
out.println("</BODY></HTML>");
}
}

This is my servlet program which retrieves cookies
[ September 04, 2008: Message edited by: Bear Bibeault ]

yuvraj kotegar

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posted 16 years ago

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this is my xml file

yuvraj kotegar

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posted 16 years ago

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i try to retrieve my program

by

http://localhost:8080/allcookie/cookieget

am not getting any output..

am not able to figure out any problem..

allcookie is my project folder..

can anyone help??

i use the tomcat server

am not getting any thing in response in browser.

one more simple cookie program executed . only this one is not excuting... i mean not getting any cookies back to my browser

Bear Bibeault

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posted 16 years ago

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Are you getting no HTML at all sent? Of just an empty body?

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yuvraj kotegar

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posted 16 years ago

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hi am getting the header . but the body is empty even though i have cookies stored

Bear Bibeault

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posted 16 years ago

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Cookies for the domain in which the servlet is executing? The browser will not return cookies for other domains.

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yuvraj kotegar

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ok.

how do you retrieve cookies which is stored in our system then??

any other methods?

Bear Bibeault

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posted 16 years ago

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You don't. As I said, cookies will only be delivered to the domain that created them.

What are you really trying to accomplish?

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yuvraj kotegar

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i was just trying to retrieve all cookies from my program just for my knowledge sake!

Ankit Garg

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posted 16 years ago

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out.println("<HTML><HEAD><TITLE>");
out.println("Cookie using servlets");
out.println("</TITLE></HEAD></BODY>")

The problem might be in what I have made bold. the body tag here is an ending tag and not starting tag. open the page in a browser, then if you get no output, view the source of the page from the browser. the content might be there but it is not getting displayed...

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Bear Bibeault

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posted 16 years ago

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No. The problem is that one cannot retrieve cookies for any domain except the one that set the cookie. Period.

If you want to see what cookies are stored, use the browser tools provided for that purpose.

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Ankit Garg

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Or you can set cookies from your own code and then display their values....

for that create cookie objects like Cookie c = new Cookie("name","value"); and then add them to the response like response.addCookie(c);

then the next time you refresh the page, you will get cookie values...

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Seetharaman Venkatasamy

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if you want to display cookie then you need to set cookie

example,

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