Currently I'm using netbeans 7.2 using glassfish server. I want to put two numbers using HTML+ Servelet. I'm just a beginner I have no idea. Would somebody help me? I also don't know why I got error: Incompatible types required int found string although I used parseInt to convert String into Integer. Here's the code:
INDEX.JSP:
<%--
Document : index
Created on : Oct 3, 2012, 4:06:09 PM
Author : len
--%>
<%@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="add/addpackage">
Name:<input type="text" name="name" value="" />
Num1:<input type="text" name="num1" value="" />
Num2:<input type="text" name="num2" value="" />
<br>
<input type="submit" value="button" />
</form>
</body>
</html>
Servelet:
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
*
* @author len
*/
@WebServlet(name = "HelloServelet", urlPatterns = {"/HelloServelet"})
public class HelloServelet 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();
String name = request.getParameter("name");
int a = request.getParameter("num1");
int b = request.getParameter("num2");
int sum = 0;
int x,y;
x = Integer.parseInt(a);
y = Integer.parseInt(b);
sum = x + y;
out.println("Hi!" + name + "The sum is" + sum);
out.close();
}
}
// <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>
}
