I agree with the Filter and Action approach. If you do want a check login custom tag, look at the sample application that comes with the struts distribution. It is very simple and you should need to just modify a couple lines to check your own login.
- GZ -----Original Message----- From: David Graham [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 11, 2003 2:49 PM To: [EMAIL PROTECTED] Subject: RE: tiles and logic:forward You really shouldn't be using the forward or redirect tags anyways. I consider that business logic that belongs in java classes. A checklogin tag is also not a good idea because then you have to remember to place it in every page. The authentication code should be in a Filter or Action. David >From: "Laker Shen" <[EMAIL PROTECTED]> >Reply-To: "Struts Users Mailing List" <[EMAIL PROTECTED]> >To: [EMAIL PROTECTED] >Subject: RE: tiles and logic:forward >Date: Tue, 11 Mar 2003 19:44:00 +0000 > >Understand. I think that's the case. Thanks. > >But, still, it may cause a lot of extra troubles. I may need to create >an >extra action to handle those forward logic. > >In Ted's Blueprinting Struts, he suggested to create a CheckLogin >custom >tag. To use tiles with the tag, either the check login logic is very simple >and we can put the tag in the layout.jsp or the check login tag needs to be >very smart and handle all the logic based on dynamic user information. > >Still try to find a way around this. > >>From: "Zheng, Gang" <[EMAIL PROTECTED]> >>Reply-To: "Struts Users Mailing List" <[EMAIL PROTECTED]> >>To: 'Struts Users Mailing List' <[EMAIL PROTECTED]> >>Subject: RE: tiles and logic:forward >>Date: Tue, 11 Mar 2003 14:43:01 -0500 >> >>I did not look at struts source code, but I guess the underlying >>implementation of <logic:forward> is by using >>javax.servlet.RequestDispatcher forward method. And <logic:redirect> >>is by using sendRedirect. >> >>In either case, as indicated by the Java documentation, the forward or >>redirect will fail once you have already commit the output to HTTP >>response. I think this is HTTP and servlet nature, rather than a tile >>issue. >> >>IMHO, tile enables you to assemble the web page by including the >>outcome >>of >>all the content tiles. The login redirect/forward logic should be handled >>outside of tile's scope. >> >>- GZ >> >> >>-----Original Message----- >>From: Laker Shen [mailto:[EMAIL PROTECTED] >>Sent: Tuesday, March 11, 2003 2:14 PM >>To: [EMAIL PROTECTED] >>Subject: RE: tiles and logic:forward >> >> >>Thanks. >> >>However, if it is the case, tiles is really silly. >> >>The forward logic should be inside each content tile. There's no way I >>can move the logic into a jsp page before calling any tile, e.g. >>layout.jsp. >> >>There should be a better way, otherwise, tiles is not useful at all. >> >> >From: "Zheng, Gang" <[EMAIL PROTECTED]> >> >Reply-To: "Struts Users Mailing List" >> ><[EMAIL PROTECTED]> >> >To: 'Struts Users Mailing List' <[EMAIL PROTECTED]> >> >Subject: RE: tiles and logic:forward >> >Date: Tue, 11 Mar 2003 14:08:04 -0500 >> > >> >You have to make sure the the "forward" or "redirect" happens before >> >anything is written out to the HTTP response. >> > >> >One way is to invoke the <logic:forward name="logon"/> the first >> >thing in your JSP page before you call any tiles. >> > >> >- GZ >> > >> >-----Original Message----- >> >From: Laker Shen [mailto:[EMAIL PROTECTED] >> >Sent: Tuesday, March 11, 2003 1:50 PM >> >To: [EMAIL PROTECTED] >> >Subject: tiles and logic:forward >> > >> > >> >I tried to migrate my struts project to use tiles. Hit some problems >> >with forward. >> > >> >In a tile, I have: >> > <logic:notPresent scope="session" name="user"> >> > <logic:forward name="logon"/> >> > </logic:notPresent> >> > >> >If the user is not logged on, he will be directed to the logon page. >> >It works as a standalone jsp page. However, once I put it into a >> >tile, it is not working. The following exception is thrown: >> >[ServletException in:/docs/SubmitFile.jsp] Exception forwarding for >> >name >> >logon: java.lang.IllegalStateException: Cannot forward after response >> >has been committed' >> > >> >Looks like the way tiles works is to put all the tile definition >> >into one http response and write to the response even before the >> >forward happens. >> > >> >I tried to use logic:redirect, no exception is thrown, but the user >> >is not directed to the logon page. >> > >> >Can someone help? Thanks. >> > >> > >> >_________________________________________________________________ >> >The new MSN 8: advanced junk mail protection and 2 months FREE* >> >http://join.msn.com/?page=features/junkmail >> > >> > >> >-------------------------------------------------------------------- >> >- >> >To unsubscribe, e-mail: [EMAIL PROTECTED] >> >For additional commands, e-mail: [EMAIL PROTECTED] >> > >> >-------------------------------------------------------------------- >> >- >> >To unsubscribe, e-mail: [EMAIL PROTECTED] >> >For additional commands, e-mail: [EMAIL PROTECTED] >> >> >>_________________________________________________________________ >>Protect your PC - get McAfee.com VirusScan Online >>http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963 >> >> >>--------------------------------------------------------------------- >>To unsubscribe, e-mail: [EMAIL PROTECTED] >>For additional commands, e-mail: [EMAIL PROTECTED] >> >>--------------------------------------------------------------------- >>To unsubscribe, e-mail: [EMAIL PROTECTED] >>For additional commands, e-mail: [EMAIL PROTECTED] > > >_________________________________________________________________ >Protect your PC - get McAfee.com VirusScan Online >http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963 > > >--------------------------------------------------------------------- >To unsubscribe, e-mail: [EMAIL PROTECTED] >For additional commands, e-mail: [EMAIL PROTECTED] _________________________________________________________________ STOP MORE SPAM with the new MSN 8 and get 2 months FREE* http://join.msn.com/?page=features/junkmail --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
