JSP, Servlets, JDBC

Up to now we created
insertupdate.jsp
ControllerServlet.java
package model and bean class
now in this post we will create a package and a class
crate a package validation and with in this package create a class ValidateForm.

package validation;

/**
 *
 * @author Jagadeesh
 */
public class ValidateForm {


}

now go to servlet. in that servlet declare variables to get form values and create a method for setting values to bean

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import model.UserBean;
import validation.ValidateForm;

/**
 *
 * @author Jagadeesh
 */
public class ControllerServlet extends HttpServlet {
   
   //declare values to get form values from jsp page
           String userName;
           String dateOfBirth;
           String email;
           String phoneNo;
           String action;

           UserBean bean = new UserBean();
           ValidateForm validateform = new ValidateForm();
           
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
           //get the values from jsp page
            userName = request.getParameter("userName");
            dateOfBirth = request.getParameter("dateOfBirth");
            email = request.getParameter("email");
            phoneNo = request.getParameter("phoneNo");
            action = request.getParameter("action");
           if(action.equals("submit"))
           {
             //set values to bean.For this call below method
            setValuesToBean();

            
           }
        } 
        catch(Exception e)
        {
            out.println(e);
        }
        finally {
            out.close();
        }
    }
    //this method is used to setvalues to bean
   public void setValuesToBean()
   {
       bean.setUserName(userName);
       bean.setDateOfBirth(dateOfBirth);
       bean.setEmail(email);
       bean.setPhoneNo(phoneNo);
       
   }
   
  
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    } 

  
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }

    
    public String getServletInfo() {
        return "Short description";
    }

}

in next post we will learn how to validate form values and how to send errors to jsp page