I think I found my answer here:
https://cwiki.apache.org/confluence/display/WICKET/Page+Storage
I'll grab the Wicket sources tomorrow and hook my IntelliJ IDEA debugger to the
DiskDataStore and work it backwards to see what happens.
Stay tuned... ;)
Have a great day,
Paul Bors
> On Sep 25, 2013, at 5:59 PM, Paul Bors <p...@bors.ws> wrote:
>
> Hey guys,
>
> Just wondering what could be the cause of the many page expired exceptions I
> am running into with this webapp whenever the user changes tabs and then
> selects the browser’s “Back” button or whenever the user downloads a resource
> via a button and the form is being submitted a second time.
>
> My first guess is that the page might have issues with its stateless flags
> but help is welcomed as I’m still new to Wicket 6.x.
>
> If needed I can create a quick-start.
>
> The following is an example of the log right after the button has been hit a
> second time to submit the form:
>
> DEBUG: 09/25 17:35:40.954: ServletWebRequest: Calculating context relative
> path from: context path '', filterPrefix 'app/', uri '/app/wicket/page'
> DEBUG: 09/25 17:35:40.955: ServletWebRequest: Calculating context relative
> path from: context path '', filterPrefix 'app/', uri '/app/wicket/page'
> DEBUG: 09/25 17:35:40.955: ServletWebRequest: Calculating context relative
> path from: context path '', filterPrefix 'app/', uri '/app/wicket/page'
> DEBUG: 09/25 17:35:40.956: CompoundRequestMapper: One compatible mapper found
> for URL 'wicket/page?53-1.IFormSubmitListener-exportForm' -> 'Mapper:
> org.apache.wicket.core.request.mapper.PageInstanceMapper; Score: 2147483647'
> DEBUG: 09/25 17:35:40.956: ServletWebRequest: Calculating context relative
> path from: context path '', filterPrefix 'app/', uri '/app/wicket/page'
> DEBUG: 09/25 17:35:40.956: PageAccessSynchronizer: 'http-thread-pool-5311(4)'
> attempting to acquire lock to page with id '53'
> DEBUG: 09/25 17:35:40.956: PageAccessSynchronizer: http-thread-pool-5311(4)
> acquired lock to page 53
> DEBUG: 09/25 17:35:40.957: DiskDataStore: Removing data for pages in session
> with id '702b17085b39e8a599d07e81df51'
> DEBUG: 09/25 17:35:40.960: DiskDataStore: Returning data(null) for page with
> id '53' in session with id '702b17085b39e8a599d07e81df51'
> DEBUG: 09/25 17:35:40.960: AsynchronousDataStore: Returning the data of a
> stored entry with sessionId '702b17085b39e8a599d07e81df51' and pageId '53'
> DEBUG: 09/25 17:35:40.961: PageAccessSynchronizer: 'http-thread-pool-5311(4)'
> released lock to page with id '53'
> DEBUG: 09/25 17:35:40.961: PageAccessSynchronizer: 'http-thread-pool-5311(4)'
> notifying blocked threads
> DEBUG: 09/25 17:35:40.961: ServletWebRequest: Calculating context relative
> path from: context path '', filterPrefix 'app/', uri '/app/wicket/page'
> DEBUG: 09/25 17:35:40.964: PageAccessSynchronizer: 'http-thread-pool-5311(4)'
> attempting to acquire lock to page with id '55'
> DEBUG: 09/25 17:35:40.964: PageAccessSynchronizer: http-thread-pool-5311(4)
> acquired lock to page 55
> DEBUG: 09/25 17:35:40.966: MarkupContainer: Add homePageLink to [Page class =
> org.apache.wicket.markup.html.pages.PageExpiredErrorPage, id = 55, render
> count = 0]
> DEBUG: 09/25 17:35:40.966: Component: Begin render [Page class =
> org.apache.wicket.markup.html.pages.PageExpiredErrorPage, id = 55, render
> count = 1]
> DEBUG: 09/25 17:35:40.967: MarkupContainer: Add _header_0 to [Page class =
> org.apache.wicket.markup.html.pages.PageExpiredErrorPage, id = 55, render
> count = 1]
> DEBUG: 09/25 17:35:40.967: Component: Begin render [HtmlHeaderContainer
> [Component id = _header_0]]
> DEBUG: 09/25 17:35:40.967: Component: renderHead: [BookmarkablePageLink
> [Component id = homePageLink]]
> DEBUG: 09/25 17:35:40.967: Component: renderHead: [HtmlHeaderContainer
> [Component id = _header_0]]
> DEBUG: 09/25 17:35:40.967: Component: renderHead: [PageExpiredErrorPage
> [Component id = 55]]
> DEBUG: 09/25 17:35:40.968: Component: End render [HtmlHeaderContainer
> [Component id = _header_0]]
> DEBUG: 09/25 17:35:40.968: Component: Begin render [BookmarkablePageLink
> [Component id = homePageLink]]
> DEBUG: 09/25 17:35:40.969: ServletWebRequest: Calculating context relative
> path from: context path '', filterPrefix 'app/', uri '/app/wicket/page'
> DEBUG: 09/25 17:35:40.970: ServletWebRequest: Calculating context relative
> path from: context path '', filterPrefix 'app/', uri '/app/wicket/page'
> DEBUG: 09/25 17:35:40.970: ServletWebRequest: Calculating context relative
> path from: context path '', filterPrefix 'app/', uri '/app/wicket/page'
> DEBUG: 09/25 17:35:40.970: ServletWebRequest: Calculating context relative
> path from: context path '', filterPrefix 'app/', uri '/app/wicket/page'
> DEBUG: 09/25 17:35:40.971: Component: End render [BookmarkablePageLink
> [Component id = homePageLink]]
> DEBUG: 09/25 17:35:40.971: Component: End render [Page class =
> org.apache.wicket.markup.html.pages.PageExpiredErrorPage, id = 55, render
> count = 1]
> DEBUG: 09/25 17:35:40.971: PageAccessSynchronizer: 'http-thread-pool-5311(4)'
> attempting to acquire lock to page with id '53'
> DEBUG: 09/25 17:35:40.971: PageAccessSynchronizer: http-thread-pool-5311(4)
> acquired lock to page 53
> DEBUG: 09/25 17:35:40.972: DiskDataStore: Returning data(null) for page with
> id '53' in session with id '702b17085b39e8a599d07e81df51'
> DEBUG: 09/25 17:35:40.972: AsynchronousDataStore: Returning the data of a
> stored entry with sessionId '702b17085b39e8a599d07e81df51' and pageId '53'
> DEBUG: 09/25 17:35:40.972: PageAccessSynchronizer: 'http-thread-pool-5311(4)'
> released lock to page with id '53'
> DEBUG: 09/25 17:35:40.972: PageAccessSynchronizer: 'http-thread-pool-5311(4)'
> notifying blocked threads
> DEBUG: 09/25 17:35:40.972: PageAccessSynchronizer: 'http-thread-pool-5311(4)'
> attempting to acquire lock to page with id '53'
> DEBUG: 09/25 17:35:40.972: PageAccessSynchronizer: http-thread-pool-5311(4)
> acquired lock to page 53
> DEBUG: 09/25 17:35:40.973: DiskDataStore: Returning data(null) for page with
> id '53' in session with id '702b17085b39e8a599d07e81df51'
> DEBUG: 09/25 17:35:40.973: AsynchronousDataStore: Returning the data of a
> stored entry with sessionId '702b17085b39e8a599d07e81df51' and pageId '53'
> DEBUG: 09/25 17:35:40.973: PageAccessSynchronizer: 'http-thread-pool-5311(4)'
> released lock to page with id '53'
> DEBUG: 09/25 17:35:40.973: PageAccessSynchronizer: 'http-thread-pool-5311(4)'
> notifying blocked threads
> DEBUG: 09/25 17:35:40.973: PageAccessSynchronizer: 'http-thread-pool-5311(4)'
> attempting to acquire lock to page with id '53'
> DEBUG: 09/25 17:35:40.973: PageAccessSynchronizer: http-thread-pool-5311(4)
> acquired lock to page 53
> DEBUG: 09/25 17:35:40.974: DiskDataStore: Returning data(null) for page with
> id '53' in session with id '702b17085b39e8a599d07e81df51'
> DEBUG: 09/25 17:35:40.974: AsynchronousDataStore: Returning the data of a
> stored entry with sessionId '702b17085b39e8a599d07e81df51' and pageId '53'
> DEBUG: 09/25 17:35:40.974: PageAccessSynchronizer: 'http-thread-pool-5311(4)'
> released lock to page with id '53'
> DEBUG: 09/25 17:35:40.974: PageAccessSynchronizer: 'http-thread-pool-5311(4)'
> notifying blocked threads
> DEBUG: 09/25 17:35:40.974: PageAccessSynchronizer: 'http-thread-pool-5311(4)'
> attempting to acquire lock to page with id '53'
> DEBUG: 09/25 17:35:40.974: PageAccessSynchronizer: http-thread-pool-5311(4)
> acquired lock to page 53
> DEBUG: 09/25 17:35:40.975: DiskDataStore: Returning data(null) for page with
> id '53' in session with id '702b17085b39e8a599d07e81df51'
> DEBUG: 09/25 17:35:40.975: AsynchronousDataStore: Returning the data of a
> stored entry with sessionId '702b17085b39e8a599d07e81df51' and pageId '53'
> DEBUG: 09/25 17:35:40.975: PageAccessSynchronizer: 'http-thread-pool-5311(4)'
> released lock to page with id '53'
> DEBUG: 09/25 17:35:40.975: PageAccessSynchronizer: 'http-thread-pool-5311(4)'
> notifying blocked threads
> DEBUG: 09/25 17:35:40.975: Page: ending request for page [Page class =
> org.apache.wicket.markup.html.pages.PageExpiredErrorPage, id = 55, render
> count = 1], request
> org.apache.wicket.protocol.http.servlet.ServletWebRequest@5b454b
> DEBUG: 09/25 17:35:40.975: Page: ending request for page [Page class =
> org.apache.wicket.markup.html.pages.PageExpiredErrorPage, id = 55, render
> count = 1], request
> org.apache.wicket.protocol.http.servlet.ServletWebRequest@5b454b
> DEBUG: 09/25 17:35:40.976: PageAccessSynchronizer: 'http-thread-pool-5311(4)'
> released lock to page with id '55'
> DEBUG: 09/25 17:35:40.976: PageAccessSynchronizer: 'http-thread-pool-5311(4)'
> notifying blocked threads
