Block repeat requests in Wicket

Question

There are links on the wicket page that are activated by pressing a number key. onClick() method calls the database logic to save some values. The problem occurs when the user presses the button continuously, and the gate receives another request before he finishes the first. The result is a StalePageException .

  org.apache.wicket.request.mapper.StalePageException at org.apache.wicket.request.handler.PageProvider.getStoredPage(PageProvider.java:301) at org.apache.wicket.request.handler.PageProvider.resolvePageInstance(PageProvider.java:257) at org.apache.wicket.request.handler.PageProvider.getPageInstance(PageProvider.java:165) at org.apache.wicket.request.handler.ListenerInterfaceRequestHandler.getPage(ListenerInterfaceRequestHandler.java:100) at org.apache.wicket.request.handler.ListenerInterfaceRequestHandler.respond(ListenerInterfaceRequestHandler.java:165) at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:784) at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64) at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:255) at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:212) at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:283) at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:188) at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:244) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:562) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:395) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:250) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:166) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:662) 

The question is, how to filter out all the requests until the first one is executed?

Answer 1

Similar questions were asked earlier in the user gate lists, and the answer was to disable your components / prevent further interaction until the request is complete.

In your case, just remove / block the onClick() behavior.

• Double click submit
• AjaxButtons Double-Click Prevention in ModalWindow
• How to prevent a user from double-clicking a non-Ajax component

It's also worth mentioning that if you are using Ajax requests, you can specify the transition behavior so that only the last one is processed in the script for sending multiple requests. You can achieve this by overriding AbstractDefaultAjaxBehavior.getChannelName() and returning everything that ends with |d .