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How to use Jquery in JSP for user authentication

Hey users we all knows benefits of jquery and this is used by most of developers.Here now this tutorial is related
to show jquery magic with jsp (Java Server Pages). Actually i'm posting this article because it took a long time when when i was finishing my project.
So come to main point what things we required ?
  1. JSP page from where request goes to server to check user authintication.
  2. Servlet where cheking is been done.
  3. A jquery code to check the response and perform its task to validate user.
 A response is sent back to jsp and action is performed by jquery. In this example i used bootstrap model for my login area.


Front End Code (JSP):







       


 
 

 
  


        

Jquery Code:


You can put this code either on seprate file and call it in head section or put in the same jsp file with its script tag.

Servlet Code:

i had used EJB technique and method is written in session bean in which query is written. This method is called from servlet which is shown below.

 List login =sessionbean.login(name,password);        
         int t=login.size();       
         if(t==0)
         {
            response.getWriter().write("Wrong Username Or Password");
         }
         else
         {
             HttpSession session=request.getSession(true);
             session.setAttribute("currentSessionUser", name);
                  
            response.getWriter().write("Welcome");   
         }

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