Building a simple login form - TYIT

Roll number:
Name:

Create a new Java Web application in Netbeans IDE
Name the application to something like “TYIT”
Click Next
Select Glassfish server
Click Next and Finish (do not add any frameworks)

index.html

<!DOCTYPE html>
<html>
  <head>
    <title>login form</title>
  </head>
  <body>
    <form action="NewServlet" method="get">
      Username <input type="text" name="u"><br>
      Password <input type="text" name="p"><br>     

      <input type="submit" value="submit">

    </form>
  </body>
</html>

Create a new Servlet “NewServlet.java” in the default source package NewServlet.java

@WebServlet(urlPatterns = {"/NewServlet"})
public class NewServlet extends HttpServlet {

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        try (PrintWriter out = response.getWriter()) {
            /* TODO output your page here. You may use following sample code. */
            out.println("<!DOCTYPE html>");
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet NewServlet</title>");            
            out.println("</head>");
            out.println("<body>");
            String user = request.getParameter("u");
            String pass = request.getParameter("p");
            if (pass.equalsIgnoreCase("sys"))
                out.println("<h1>Hello "+user+"</h1>");
            else
            out.println("<h1>login failed</h1>");
            out.println("</body>");
            out.println("</html>");
        }
    }
}

This is to be created in the default source package

Save all files and then right click the java file and select “Run file”
You will be taken to the browser
Enter any username and password
Click login

Output

TYIT - Practicals

Practical 2 - Building a simple login form