[WICKET-3570] Wicket Ajax Tree example loggin IllegalStateException on console

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.5-RC3
• Fix Version/s: 1.5-RC4
• Component/s: wicket-examples
• Environment: IE 8, can't reproduce on Chrome
• Assignee: Pedro Santos
• Reporter: Pedro Santos
• Created: 29/Mar/11 12:19
• Updated: 28/Jun/18 15:08
• Resolved: 21/Apr/11 18:20

Description

Simply visiting http://localhost:8080/nested/wicket/bookmarkable/org.apache.wicket.examples.ajax.builtin.tree.SimpleTreePage on wicket-examples site using IE and selecting a node, triggers IllegalStateException.

ERROR - RequestCycle - Error during processing error message
java.lang.IllegalStateException: Header was already written to response!
at org.apache.wicket.protocol.http.HeaderBufferingWebResponse.checkHeader(HeaderBufferingWebResponse.java:62)
at org.apache.wicket.protocol.http.HeaderBufferingWebResponse.setDateHeader(HeaderBufferingWebResponse.java:131)
at org.apache.wicket.protocol.http.BufferedWebResponse$SetDateHeaderAction.invoke(BufferedWebResponse.java:241)
at org.apache.wicket.protocol.http.BufferedWebResponse.writeTo(BufferedWebResponse.java:487)
at org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:225)
at org.apache.wicket.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:139)
at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:715)
at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:63)
at org.apache.wicket.request.cycle.RequestCycle.executeExceptionRequestHandler(RequestCycle.java:274)

Issue Links

• relates to: WICKET-6565 ResponseIOException logged as an error in DefaultExceptionMapper