Java, .NET, PHP, PYTHON, ANGULAR, .NET, ML, Data Scince, Testing, CI Tutorials in Easy Languages.

"Best Software Training, Internship, Project Development center of Indore India, Helpline 780506-3968"

JSP to Servlet :-



Create Web project and design JSP Page and create form

1.1)  Create Web Page using JSP

     


<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>
        <form action="AdditionServlet" method="post">
            <h1>Addition Form</h1>
            <hr>
            <input type="text" name="txtnum1" placeholder="Enter First Number" value="<% if(request.getParameter("q1")!=null)
         {
             out.print(request.getParameter("q1"));
         }  %>" /><br><br>
            <input type="text" name="txtnum2" placeholder="Enter Second Number" value="<% if(request.getParameter("q2")!=null)
         {
             out.print(request.getParameter("q2"));
         }  %>"/><br><br><br>
            <input type="submit" name="btnsubmit" value="Click" />
            <br><br>
         
         
        </form>
        <%
         if(request.getParameter("q")!=null)
         {
             out.print(request.getParameter("q"));
         }
         
         
       
       %> 
         
    </body>
         
         
         
</html>


2)   

import java.io.IOException;
import java.io.PrintStream;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author Hp
 */
public class AdditionServlet extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        int num1 =  Integer.parseInt(request.getParameter("txtnum1"));
        int num2 =  Integer.parseInt(request.getParameter("txtnum2"));
        int num3 = num1+num2;
      //  out.write("result is "+num3);
        response.sendRedirect("index.jsp?q="+num3+"&q1="+num1+"&q2="+num2);
           
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}

Post a Comment

If you have any doubt in programming or join online classes then you can contact us by comment .

Previous Post Next Post