Question

I am a newbie trying to create a sample web application using;

MySQL
Java
Tomcat
JSP & Servlet

The ide I use is MyEclipse Blue Edition.

The persistence and service layer is done. Within web layer however I’m having trouble displaying the index.jsp, here is what I done so far, and what my expectations are:

• I have associated the project with tomcat 6, each time I run the
  project service is stopped and restarted the final line in log is
  INFO: Server startup in x ms
• I have created the web layer by selecting new web project from which
  an example index.jsp was already genereated in web root folder, I
  also checked that in web.xml ( I suppose this is going to be used by
  tomcat ) there is a tag called welcome-list indicating the first
  jsp that should be opened when the application starts. index.jsp is on that list.
• I have used a tutorial on how to use Servlets and extended
  HTTPServlet within a class at web layer, presently it does very
  little things, namely within index.jsp there is a button, upon
  clicking that button this class should forward request and responses
  and open up another jsp file, this I couldn’t test yet.

Which brings us to my newbie question: Everytime I run the project server starts and then nothing happens. I’m expecting for MyEclipse to start displaying index.jsp on its own browser from which I can copy/paste the url to a regular browser. I’m expecting the url to be something like localhost:8080/index.jsp (tomcat runs on port 8080, in my computer).

Server seems to be running and I have tried different combinations but I can’t seem ot display the index.jsp, whatever I try it is not found, what should I do ?

Edit1: Here is my web.xml code:

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee   http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
 <welcome-file-list>
  <welcome-file>/index.jsp</welcome-file>
 </welcome-file-list>
</web-app>

Here is my servlet code: (I didn’t get to test it so far, my main problem is not here)

public class CRMServlet extends HttpServlet {

public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response);
}

public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

String action =  request.getParameter("action");
System.out.println("ACTION : " + action);

if(action.equals("LoginRequest"))
{
    request.setAttribute("bilgi", "cem");
    request.getRequestDispatcher("Login.jsp").forward(request, response);
}

}

}

Answer 1

1. Go to the Window tab and select web browser. there you can define your favorite browser.
2. For URL it should be like http://localhost:8080/{ProjectName}/index.jsp
   — you can find the ProjectName with your IDE, with what name did u create the project
3. for servlet URL’s check the web.xml, and to the same URL you have to pass in the form action tag.
   so that button click will go to servlet doGet() method and use RequestDispatcher to forward to another jsp.

web.xml

  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>

remove / from your web.xml, and i think you are not created the servlet by right click on your source folder, if you create the servlet by right click on the source folder, the entry of the servlet would be there in web.xml with <servlet></servlet> tag