Servlet not dircting to the next page

[Hend Ahmed]

Hi,
I am trying to publish the web application i have. However i have this problem that at first when the user tries to log in, the login.jsp will take to the loginServlet which will if the login successfuly will take to homepage.jsp. I believe the username and password are being passed to the servlet since in the URL i get something like: ... /LoginServlet?user=hh&pass=hh

However it gives me error : The page you are looking for might have been removed, had its name changed, or is temporarily unavailable. HTTP Error 404 - File or directory not found.

i dont know where is the problem Please advise.. it will be appreciated.

The code of the servlet is below ..

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;

import java.util.Iterator;

/**
 * Servlet implementation class LoginServlet
 */
public class LoginServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public LoginServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		HttpSession httpsession = request.getSession(true);
		
		Session session = null;
		String username = request.getParameter("user");
		String password = request.getParameter("pass");
		httpsession.putValue("username", username);
 	    
        try{
       	  			
  				SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
  				session =sessionFactory.openSession();
  			 	System.out.println("select  Record");
  			 	String SQL_QUERY =" from user as user where user.userId='"+ username+"' and user.password='"+password+"'";
  					    	    
  			 	Query query = session.createQuery(SQL_QUERY);
  			 
  			 	Iterator it=query.iterate();
  			 	if (it.hasNext())
  				 {
  			 			System.out.println("OK USER EXISTS");  
  				     
  				       User user =(User)session.load(User.class, username);
  				       System.out.println("Query using Hibernate Query Language");	   
  				       System.out.println("username: " + user.getUserId());
  				       System.out.println("password: " + user.getPassword());
  		        
  				       Transaction  tx = session.beginTransaction();
  				       session.saveOrUpdate(user);
			      
  				       tx.commit();
  				       session.flush();
  				       
  				       System.out.println("user exists");
  				      
  				     try {
  						request.setAttribute ("servletName", "CreateTripServlet");
  						getServletConfig().getServletContext().getRequestDispatcher("HomePage.jsp").forward(request, response);
  						} 
  						catch (Exception ex) {
  						ex.printStackTrace ();
  						}
                 
  				      
  				 
     
  				 }
  				     
  				  else
                 {
                    System.out.println("user doesnt exist");
                    response.sendRedirect("Login.jsp?msg=Invalid Username or Password");
                   /* try {
  						request.setAttribute ("servletName", "CreateTripServlet");
  						getServletConfig().getServletContext().getRequestDispatcher("/Login.jsp").forward(request, response);
  						} 
  						catch (Exception ex) {
  						ex.printStackTrace ();
  						}*/
                   
                 }
  			session.close();
			System.out.println("Done");
			//session.createFilter(arg0, arg1)
	}catch(Exception e){
		System.out.println(e.getMessage());
	}finally{
		
		}

	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		doGet(request,response);
	}

}

[Lino Larios]

Try

ServletContext ctx= getServletContext();  

and then

ctx.getServletContext().getRequestDispatcher("HomePage.jsp").forward(request,response);

or

ctx.getServletContext().getRequestDispatcher("/HomePage.jsp").forward(request,response);

Regards

[Hend Ahmed]

Hi Lino,
Thanks for your reply..
i tried what you have suggested.. but it gave me error: the method getServletContext() is not defined for the ServletContext
so i had to change the method. to this

ServletContext ctx= getServletContext();  
 
((ServletContext) ctx.getServlets()).getRequestDispatcher("HomePage.jsp").forward(request,response); 

I have tried the above code but it still gives me the same error that the The page you are looking for might have been removed, had its name changed, or is temporarily unavailable.
--------------------------------------------------------------------------------
Please advise

I have also one question, this error does it mean that the servlet does not forward to the jsp (HomePage) in a way that HomePage is not available.. OR it also mean that the username and password wasn't checked from the first place? actually i dont know if it accessed the database or not..


Thanks in advance

Hend