404 ERROR WHILE RUNNING A SERVLET

Question

hi
i have written servlet program that takes a cookie value
from a HTML page....
while running the HTML page i have been getting the error
The page you are looking for might have been removed, had its name changed, or is temporarily unavailable.
Please try the following:
If you typed the page address in the Address bar, make sure that it is spelled correctly.
Open the localhost:8080 home page, and then look for links to the information you want.
Click the Back button to try another link.
Click Search to look for information on the Internet.
HTTP 404 - File not found
Internet Explorer
i have placed my servlet prog at
c:\aruna\AddCookieServlet
and html prog is also in there itself
and i have complied them successfully
i have been tried with following URLs in my html prog
http://localhost:8080/servlet/AddCookieServlet
http://localhost:8080/aruna/servlet/AddCookieServlet
it would be helpful if someone will give me an immediat response
thanks

Answer 1

Hi arunapotti,
I assume that you have downloaded Java server Web Developement Kit 1.0.1. This is a reference implementation of Servlets 2.1 and JSP1.0 specification.
But the current version of Servlets is 2.3 and that of JSP is 1.1, and the reference implementation for the same is Tomcat4.0.1. You can download this implementation from the following URL. Like JSWDK it is also available free of cost:-
http://java.sun.com/products/servlet/download.html
Once you install it properly in
C:\jakarta-tomcat-4.0.1
You can write a servlet as :-
I wrote a servlet named CentralServlet as :-
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class CentralServlet extends HttpServlet {
public void doGet(HttpServletRequest req, HttpServletResponse res)
throws ServletException , IOException {
doPost(req, res);
public void doPost(HttpServletRequest req, HttpServletResponse res)
throws ServletException , IOException {
PrintWriter out = res.getWriter();
out.println("Yes you have done it");
Once you compile this properly place it in directory
C:\jakarta-tomcat-4.0.1\webapps\srvltWEB-INF\classes\CentralServlet
where srvlt is the directory created by you, this is the context for your application.webapps will already be there when you have successfully installed Tomcat.
Within srvlt create WEB-INF and with in WEB-INF create classes where you place your servlet.
To make srvlt a context you will have to make an entry in server.xml file which you can find at the following location
C:\jakarta-tomcat-4.0.1\conf\server.xml
Add the following entry in this xml file.
<Context path="/srvlt" docBase="srvlt" debug="0" reloadable="true" />
Also write web.xml is as :-
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">;
<web-app>
<servlet>
<servlet-name>srvlt</servlet-name>
<servlet-class>CentralServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>srvlt</servlet-name>
<url-pattern>/main</url-pattern>
</servlet-mapping>
</web-app>
Put web.xml in
C:\tomcat-4.0.1\webapps\srvlt\WEB-INF\web.xml
Now restart the webserver and you can access the servlet by passing the following url
http://localhost:8080/srvlt/main
=========================================
If still you have some reason to work with Java Server Web Developement Kit then Post a message, I may help you out in that also. But it is highly recommended that you use Tomcat_4.0.1.
Hope this helps