Mega Code Archive
Get Set Session Value in a Servlet
<![CDATA[
import java.util.*;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class MyServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
response.setContentType("text/html");
PrintWriter out = response.getWriter();
HttpSession session = request.getSession(true);
Integer counter2 = (Integer) getServletContext().getAttribute ("counter2");
if (counter2 == null) {
counter2 = new Integer(1);
} else {
counter2 = new Integer(counter2.intValue() + 1);
}
getServletContext().setAttribute("counter2", counter2);
Integer counter = (Integer) session.getAttribute("counter");
if (counter == null) {
counter = new Integer(1);
} else {
counter = new Integer(counter.intValue() + 1);
}
session.setAttribute("counter", counter);
out.println("<HTML>");
out.println("<HEAD>");
out.println("<TITLE>");
out.println("Using Contexts");
out.println("</TITLE>");
out.println("</HEAD>");
out.println("<BODY>");
out.println("<H1>Using Contexts</H1>");
out.println("Welcome! You have been here " + counter + " times.<BR>");
out.println("Total page accesses: " + counter2 + "<BR>");
if(session.isNew()){
out.println("This is a new session.<BR>");
} else {
out.println("This is not a new session.<BR>");
}
out.println("The session ID: " + session.getId() + "<BR>");
out.println("Last time accessed: " + new Date(session.getLastAccessedTime()) + "<BR>");
out.println("Creation time: " + new Date(session.getCreationTime()) + "<BR>");
out.println("Timeout length: " + session.getMaxInactiveInterval() + " seconds<BR>");
out.println("</BODY>");
out.println("</HTML>");
}
}
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN"
"http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
<web-app>
<servlet><servlet-name>MyServletName</servlet-name>
<servlet-class>MyServlet</servlet-class>
</servlet>
<servlet-mapping><servlet-name>MyServletName</servlet-name>
<url-pattern>/index.html</url-pattern>
</servlet-mapping>
</web-app>
]]>