Java servlet sessions within multiple iframes -


i have site, call www.main.com 4 iframes loads www.iframe.com/foo each of iframes. upon initial load of www.iframe.com/foo make call config.bar() servlet (foo) load user data session. before make call config.bar() i'm checking see if config loaded session , if so, skip fetch config.bar() , load session.

my problem is, since session not yet established in foo, getting 4 unique session id's, making 4 calls config.bar(). when refresh www.main.com page, 4 iframes load again assigned sessionid of first iframe load (from previous request).

i tried moving logic filter hoping right things had no effect. possible load servlet multiple times within iframes different url , have 1 session id @ time of initial load?

here's snippets demonstrate i'm trying do:

www.iframe.com/foo:

//--foocontroller.java @controller class foocontroller {     @requestmapping(value = "/foo", method = requestmethod.get)     public string foo(model model, httpservletrequest request)     {         config c = request.getsession().getattribute("config");         reqest.setattribute("bazz", bazz.domagic(c));         return "foo";     } }  //--configfilter.java public class configfilter implements filter {     @autowired     private configservice cs;      public void init(filterconfig config) throws servletexception     {     }      public void dofilter(servletrequest request, servletresponse response, filterchain chain)         throws java.io.ioexception, servletexception     {         httpservletrequest req = (httpservletrequest) request;          httpsession sess = req.getsession();          //first request these different each iframe         //second request match         system.out.println("sess="+sess.getid());          //only fetch config if not in session             if(sess.getattribute("config") == null) {             sess.setattribute("config", cs.getcfg());          // pass request down filter chain         chain.dofilter(request,response);     }      public void destroy()     {     } }

www.main.com:

<html> <body>     <iframe src="http://www.iframe.com/foo?page=1"></iframe>     <iframe src="http://www.iframe.com/foo?page=2"></iframe>     <iframe src="http://www.iframe.com/foo?page=3"></iframe>     <iframe src="http://www.iframe.com/foo?page=4"></iframe> </body> </html>


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