Exception when clicking two times rapidly on the "next" button in a wizard
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Key: WICKET-928
URL: https://issues.apache.org/jira/browse/WICKET-928
Project: Wicket
Issue Type: Bug
Components: wicket-extensions
Affects Versions: 1.3.0-beta3, 1.3.0-beta2
Reporter: Joël Vimenet
On a tree steps wizard, the first step contains two fields without any
validation. The second one contains only one field that must be an integer. The
last step will display the data entered in the two first steps.
When I am on the first step, and I click two times rapidly on the "next"
button, it throws an exception.
Here is the stack trace :
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WicketMessage: Method onFormSubmitted of interface
org.apache.wicket.markup.html.form.IFormSubmitListener targeted at component
[MarkupContainer [Component id = form, page = test.www.factory.TestPage, path =
0:wizard:form.Form, isVisible = true, isVersioned = false]] threw an exception
Root cause:
java.lang.NullPointerException
at
org.apache.wicket.util.convert.converters.AbstractConverter.parse(AbstractConverter.java:50)
at
org.apache.wicket.util.convert.converters.AbstractNumberConverter.parse(AbstractNumberConverter.java:71)
at
org.apache.wicket.util.convert.converters.IntegerConverter.convertToObject(IntegerConverter.java:44)
at
org.apache.wicket.markup.html.form.FormComponent.convertInput(FormComponent.java:1159)
at
org.apache.wicket.markup.html.form.FormComponent.validate(FormComponent.java:1027)
at org.apache.wicket.markup.html.form.Form$15.validate(Form.java:1671)
at
org.apache.wicket.markup.html.form.Form$ValidationVisitor.formComponent(Form.java:160)
at
org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrderHelper(FormComponent.java:403)
at
org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrderHelper(FormComponent.java:390)
at
org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrderHelper(FormComponent.java:390)
at
org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrderHelper(FormComponent.java:390)
at
org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrder(FormComponent.java:368)
at
org.apache.wicket.markup.html.form.Form.visitFormComponentsPostOrder(Form.java:1004)
at org.apache.wicket.markup.html.form.Form.validateComponents(Form.java:1667)
at org.apache.wicket.markup.html.form.Form.validate(Form.java:1658)
at org.apache.wicket.markup.html.form.Form.process(Form.java:811)
at org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:783)
at java.lang.reflect.Method.invoke(Method.java:585)
at
org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:186)
at
org.apache.wicket.request.target.component.listener.ListenerInterfaceRequestTarget.processEvents(ListenerInterfaceRequestTarget.java:73)
at
org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:90)
at
org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1032)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1108)
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1177)
at org.apache.wicket.RequestCycle.request(RequestCycle.java:500)
at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:261)
at org.apache.wicket.protocol.http.WicketServlet.doPost(WicketServlet.java:144)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870)
at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)
at java.lang.Thread.run(Thread.java:595)
Complete stack:
org.apache.wicket.WicketRuntimeException: Method onFormSubmitted of interface
org.apache.wicket.markup.html.form.IFormSubmitListener targeted at component
[MarkupContainer [Component id = form, page = test.www.factory.TestPage, path =
0:wizard:form.Form, isVisible = true, isVersioned = false]] threw an exception
at
org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:197)
at
org.apache.wicket.request.target.component.listener.ListenerInterfaceRequestTarget.processEvents(ListenerInterfaceRequestTarget.java:73)
at
org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:90)
at
org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1032)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1108)
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1177)
at org.apache.wicket.RequestCycle.request(RequestCycle.java:500)
at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:261)
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at java.lang.reflect.Method.invoke(Method.java:585)
at
org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:186)
at
org.apache.wicket.request.target.component.listener.ListenerInterfaceRequestTarget.processEvents(ListenerInterfaceRequestTarget.java:73)
at
org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:90)
at
org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1032)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1108)
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1177)
at org.apache.wicket.RequestCycle.request(RequestCycle.java:500)
at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:261)
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The first click on "next" seems to make the wizard go into the second step but
the second click sends a request from the first step, which is not correct with
the actual state of the wizard...
Am I clear?
Please find enclosed a sample of code to reproduce the bug.
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