Varnan alias vellaivaranan-JAVA TRAINER: Shopping cart using Servlets

This is an attempt to create a Shopping cart using Servlet Technology.

Book.html
==
<html>
<head>
<title>Book
</title>
</head>
<body bgcolor="#aa9923">
<form method="post" action="http://localhost:8080/servlet/book">
<select name=s1 Multiple>
<option>Using Java
<option>Servlet Handbook
<option>Core Java
<option>VB Bible
<option>ASP Form
</select>
<input type=submit value="OK">
</form>
</body>
</html>
==
 Book.java
== 
package test;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class book extends HttpServlet
{
 public void doPost(HttpServletRequest req, HttpServletResponse res)throws ServletException,
IOException
 {
res.setContentType("text/html");
PrintWriter out=res.getWriter();
HttpSession session=req.getSession(true);
String str[]=req.getParameterValues("s1");
session.putValue("book.purch", str);
out.println("Thanks for buying");
out.println("Visit our sports shop");
 out.println("<a href=\”sport.html\”>sport shop</a>");
}
out.close();
 }
}
==

<html>
<head>
<title>sports
</title>
</head>
<body bgcolor="#aa9923">
<form method=post action="http://localhost:8080/servlet/sports">
<select name=s1 Multiple>
<option>boll
<option>bat
<option>track and knit
<option>racquet
</select>
<input type=submit value="BUY">
</form>
</body>
</html>
===

package test;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class sport extends HttpServlet
{
public void doGet(HttpServletRequest req, HttpServletResponse res) throws IOException,
ServletException
{

doPost(req,res);
}
public void doPost(HttpServletRequest req, HttpServletResponse res) throws IOException,
ServletException
{
PrintWriter out=res.getWriter();
res.setContentType("text/html");
HttpSession session=req.getSession(true);
String str[]=req.getParameterValues("s1");
session.putValue("sport.pur",str);
out.println("thanks for buying.");
out.println("<a href=\"/servlet/bill\">billing</a>");
out.close();
}
}
==

package test;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class bill extends HttpServlet
{
public void doGet(HttpServletRequest req, HttpServletResponse res) throws IOException,
ServletException
{
doPost(req,res);
}
public void doPost(HttpServletRequest req, HttpServletResponse res) throws IOException,
ServletException
{
PrintWriter out=res.getWriter();
res.setContentType("text/html");
HttpSession session=req.getSession(true);
out.println("you have bought the following books.<ol>");
String book[]=(String[])session.getValue("book.pur");
String sport[]=(String[])session.getValue("sport.pur");
for(int i=0;i<book.length;i++)
{
out.println("<li>"+book[i]);
}
out.println("</ol><br>you have bought the foll.sport items.they are<ol>");
for(int i=0;i<sport.length;i++)
{
out.println("<li>"+sport[i]);
}
out.println("</ol>");
out.close();
}

1 comment:

HarishFebruary 12, 2026 at 10:27 PM
Very useful and informative content! I really appreciate the way you explained the concepts in a simple and clear manner. For learners who want practical exposure and hands-on experience, the Java Real Time Projects Online Training is a great option to build industry-level skills. Thank you for sharing such valuable information!

Varnan alias vellaivaranan-JAVA TRAINER

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Shopping cart using Servlets

1 comment:

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