ssession doesn't seem to be storing/holding object on server-works local

Hi Everyone,

I am trying to get an app deployed by today into production. I noticed last night that when I promoted up to the tomcat server, the object that I stored into session was not found. Everything seems to work fine on my local tomcat installation, but once I goto server, it is as if its not being held.

For example, I have a form that the user fills out. I check the fields and if there is an error, I store a quick flag, and then redirect to another servlet.

In the other servlet, I am saying:

What happens is if the flag is true, I put up an error message that there is a problem. At the end of the servlet, I state this to clear things out:

Everything works fine on the local tomcat system, but doesn't appear working correctly on a hosted server provider that has me in shared environment.

Thanks for any help you provide today.

I did some quick testing with barebones servlet

I set an object in Servlet 1, then call Servlet 2.

The object is found when running locally with Tomcat. When I put onto the server, the object cannot be found. Here is a local copy version.

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import javax.sql.*;

import SystemLogger;

import java.sql.*;
 
public class SetSession extends HttpServlet {
	
	public PrintWriter out = null;
	public String CONTENT_TYPE = "text/html";

public SetSession() throws ServletException {
	super();
}

public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException{
	
	 
	 response.setHeader ("Cache-Control", "no-cache");
	 response.setHeader ("Pragma", "no-cache"); 
	 System.out.println("Opening doors for servlet");
	 
	 String className = this.getClass().getName();
	 className = className.substring(className.lastIndexOf(".")+1,className.length());
	 SystemLogger.log.info("==> " + className + ".processGet");
	 	 
	 try{
	 response.setContentType(CONTENT_TYPE);
		 out = response.getWriter();
		 
	 out.println("<HTML>\n");
	 out.println("<BODY>\n");
	 out.println("<meta http-equiv=\"cache-control\" content=\"no-cache\" />\n");
 out.println("<meta http-equiv=\"pragma\" content=\"no-cache\" /> \n");
	 out.println("Servlet Name: Set Session \n");
	 out.println("In this servlet, we are going to set a variable object into " +
	 		 "the servlet session. We expect for GetSession to find the session object. \n");
	 		
	 
	 javax.servlet.http.HttpSession mySession = request.getSession(true);
	 mySession.setAttribute("test", "testvalue");
	 
	 out.println("The code: \n");
	 out.println("javax.servlet.http.HttpSession mySession = request.getSession(true); \n");
	 out.println("mySession.setAttribute(\"test\", \"testvalue\"); \n");
	 out.println(" \n");
	 
	 out.println("<a href=\"http://192.168.1.101/servlet/GetSession\">GetSession</a> \n");
	 
	 
		 out.println("<hr>\n");
	 out.close();
	 SystemLogger.log.info("<== " + className + ".processGet");

}catch(Exception e){
		   e.printStackTrace();
		  System.out.println(e);
       }

}

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

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import javax.sql.*;

import SystemLogger;

import java.sql.*;
 
public class GetSession extends HttpServlet {
	
	public PrintWriter out = null;
	public String CONTENT_TYPE = "text/html";

public GetSession() throws ServletException {
	super();
}

public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException{
	
	 
	 response.setHeader ("Cache-Control", "no-cache");
	 response.setHeader ("Pragma", "no-cache"); 
	 System.out.println("Opening doors for servlet");
	 
	 String className = this.getClass().getName();
	 className = className.substring(className.lastIndexOf(".")+1,className.length());
	 SystemLogger.log.info("==> " + className + ".processGet");
	 	 
	 try{
	 response.setContentType(CONTENT_TYPE);
		 out = response.getWriter();
		 
	 out.println("<HTML>\n");
	 out.println("<BODY>\n");
	 out.println("<meta http-equiv=\"cache-control\" content=\"no-cache\" />\n");
 out.println("<meta http-equiv=\"pragma\" content=\"no-cache\" /> \n");
	 out.println("\n");
	 out.println("Servlet Name: Get Session \n");
	 out.println("In this servlet, we are going to get a variable object into " +
	 		 "the servlet session. We expect for GetSession to find the session object. \n");
	 		
	 
	 javax.servlet.http.HttpSession mySession = request.getSession(true);
	 	 String test = (String) mySession.getAttribute("test");
	 	 out.println("Value of 'test' session object is: " + test + " \n");
	 	 
	 	 out.println("The code: \n");
	 out.println("javax.servlet.http.HttpSession mySession = request.getSession(true); \n");
	 out.println("String test = (String) mySession.getAttribute(\"test\"); \n");
	 out.println(" \n");
	 	 
	 	 out.println("<a href=\"http://192.168.1.101/servlet/SetSession\">SetSession</a> \n");
	 
	 out.close();
	 SystemLogger.log.info("<== " + className + ".processGet");

}catch(Exception e){
		   e.printStackTrace();
		  System.out.println(e);
       }

}

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

What's with the hard-coded local IP address?

out.println("<a href=\"http://192.168.1.101/servlet/GetSession\">GetSession</a> \n");