Computer Science, asked by sreehari5523, 1 year ago

Write a web application using servlet which accept two numbers using post methods and display the maximum of them.

Answers

Answered by кєиχ

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>

}

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