web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app version="3.1" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"> <servlet> <servlet-name>DisplaySession</servlet-name> <servlet-class>DisplaySession</servlet-class> </servlet> <servlet-mapping> <servlet-name>DisplaySession</servlet-name> <url-pattern>/DisplaySession</url-pattern> </servlet-mapping> </web-app>
import java.io.IOException; import java.io.PrintWriter; import javax.servlet.ServletException; import javax.servlet.http.*; public class DisplaySession extends HttpServlet { @Override public void doGet(HttpServletRequest req, HttpServletResponse res)throws ServletException, IOException{ try(PrintWriter out = res.getWriter()){ StringBuilder msg = new StringBuilder(); HttpSession mySession = req.getSession(); Integer accessCount = (Integer)mySession.getAttribute("count"); if(accessCount == null){ msg.append("Welcome"); mySession.setAttribute("count", 0); accessCount = 0; } else{ accessCount = accessCount + 1; mySession.setAttribute("count", accessCount); msg.append("Welcome Back"); } String sessionId = mySession.getId(); long createdTime = mySession.getCreationTime(); long lastAccessedTime = mySession.getLastAccessedTime(); out.println("<html><head><title>Your Session Data</title></head>"); out.println("<body><h1>" + msg); out.println("Your visit count " + accessCount +"<br />"); out.println("Session Id :" + sessionId +"<br />"); out.println("Created Time :" + createdTime +"<br />"); out.println("Last Accessed Time :" + lastAccessedTime +"<br />"); out.println("</h1></body></html>"); } } }
Sample
Output
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