Hi Florian, This is an old thread, but I had a similar bug that is related. The problem isn't that LDAP is, or is not, used. I was having the same issue (blank page whenever <security:authentication property="principal.fullName"/> was present). I was going mad trying to find a problem in my Struts2 action classes using a debugger, but the problem was happening much later in the page rendering (footer.jsp!).
However, I'm not using LDAP as you were. The problem seems to be related to the getFullName() method. I had modified it from the AppFuse default, and it had an NPE when called. So for anyone reading this that's getting blank JSPs, try turning off the filters to see the true stacktrace, and check that the JSPs are rendering correctly. -Jason Florian Kirchhoff wrote: > > Nathan, > > I am using Spring MVC, but the problem appears to be somwhat similar. The > blank screen was caused > by some exception, I have no idea why I could not find any signes of the > exception until I turned off > the GZIP filter. Once I did that I could see the error page and find the > problem. > My issue was that for an application generated using appfuse:gen. The > generated web app has a footer.jsp > which uses the following tag: > > <authz:authentication operation="fullName"/> > > which if the principal implements UserDetails, will call the "getFullName" > on it. Problem is when > we use LDAP authentication, the UserDetails are in > org.acegisecurity.userdetails.ldap.LdapUserDetailsImpl, which doesn't have > a getFullName method, > which thru a JspException which for some unknown reason resulted in a zero > size response... > So I changed the footer.jsp to reference the "Username" operation which is > part of the UserDetails > interface and should therefore work no matter what the implementation > is... > > Florian > > melinate wrote: >> >> Which web layer are you using in your app? I had a zero size response in >> a Struts 2 app which I found to be caused by trying to read from a >> non-existent session variable [which was caused by a typo ;)]. >> >> Nathan >> >> >> ----- Original Message ----- >> From: "Florian Kirchhoff" <florian.kirchh...@qwest.com> >> To: users@appfuse.dev.java.net >> Sent: Friday, October 19, 2007 11:10:56 AM (GMT-0800) America/Los_Angeles >> Subject: [appfuse-user] Zero size response when using LDAP based >> authentication >> >> >> Hi, >> >> I have successfully used AppFuse 2.0 to create a CRUD type app for >> several >> entities. >> I am trying to switch from DB based to LDAP based authentication. I have >> followed >> the steps in http://appfuse.org/display/APF/LDAP+Authentication (which >> are >> great). >> I checked my LDAP setup with some unit tests and confirmed that I can >> bind >> to >> LDAP to authenticate successfully. I can see that all the roles are found >> from the Groups >> in LDAP. When I switch to my web app, the same applies (bind is ok, roles >> are OK) >> but in after the redirect to mainI get a zero size response from the >> server, >> resulting in a blank page. >> I get the same whether I run in IE or Firefox or if I use jetty:run-war >> or >> Tomcat 5.5 >> which makes me think this is a Acegi related issue... >> >> Now here is the weird think, before I log on I can browse the non >> protected >> JSPs, like login.jsp, 404.jsp and 403.jsp. Once I succesfully log in I >> get a >> zero size response/blank page for all pages I try to access, even these >> unprotected pages... >> >> When I compare the log files for the DB vs. LDAP setup, I see no >> difference >> that would give me a clue as to the problem. >> >> Is there some additional change I should make when changing from DB to >> LDAP >> based AAA? >> >> Any help with this would be greatly appreciated. >> >> Thanks, >> >> Florian >> -- >> View this message in context: >> http://www.nabble.com/Zero-size-response-when-using-LDAP-based-authentication-tf4654949s2369.html#a13300084 >> Sent from the AppFuse - User mailing list archive at Nabble.com. >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: users-unsubscr...@appfuse.dev.java.net >> For additional commands, e-mail: users-h...@appfuse.dev.java.net >> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: users-unsubscr...@appfuse.dev.java.net >> For additional commands, e-mail: users-h...@appfuse.dev.java.net >> >> >> > > -- View this message in context: http://www.nabble.com/Zero-size-response-when-using-LDAP-based-authentication-tp13300084s2369p21138021.html Sent from the AppFuse - User mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@appfuse.dev.java.net For additional commands, e-mail: users-h...@appfuse.dev.java.net
