Home Tutorials Java Servlet Creating a Session

Creating a Session

Posted in : Servlet Posted on : November 20, 2010 at 3:46 PM Comments : [ 0 ]

In this tutorial you will learn how to create session in servlet

Creating A Session Example

To create a new session you need to call the getSession(true) or getSession() methods of the HttpervletRequest interfac.

An example of creating a new session is given below.

login.html

<HTML>
<HEAD>
<TITLE> Login Page </TITLE>
</HEAD>
<BODY>
<BODY bgcolor=lightblue>
<form name=login method="get" 
action="http://localhost:8080/destroysession/create">
<center>
<h1>Enter your Name and Pasword </h1><br>
<table border=1>
<tr><td>Enter Your Name :</td>
<td><input type="text" name="userName" value=""></td>
<tr><td align=center><input type="submit" name="Submit" value="Submit" ></td>
<td align=center><input type="reset" name="reset" value="Refresh"></td>
<table>
</center>
</form>
</BODY> 
</HTML>

CreateSession.java

package roseindia.net;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class CreateSession extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException {
PrintWriter out = response.getWriter();
response.setContentType("text/html");
String name = request.getParameter("userName");
if (name.equalsIgnoreCase("web")) {
out.println("<Center><h3>");
out.println("Creating A New Session...........");
out.println("</h3></Center>");
HttpSession session = request.getSession(true);
out.println("<Center><h3>");
out.println("Session Created");
out.println("<br>Session Id - ");
out.println(session.getId());
out.println("<br>Session Creation Time - ");
out.println(session.getCreationTime());
out.println("<br>Session Last Access Time - ");
out.println(session.getLastAccessedTime());
out.println("<br>Session Default MaxInactiveTime - ");
out.println(session.getMaxInactiveInterval());
out.println("</h3></Center>");
} else {
out.println("<h1>");
out.println("Please enter the name \"web\"");
out.println("<h1>");
}
}

public void doPost(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException {
doGet(request, response);
}
}

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="
 http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>CreateSession</display-name>
<!-- Servlet -->

<servlet>
<servlet-name>CreateSession</servlet-name>
<servlet-class>roseindia.net.CreateSession</servlet-class>
</servlet>

<!-- Servlet Mapping-->

<servlet-mapping>
<servlet-name>CreateSession</servlet-name>
<url-pattern>/create</url-pattern>
</servlet-mapping>

</web-app>

When you run this application it will display message as shown below: