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https://issues.apache.org/jira/browse/WICKET-7071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17762584#comment-17762584
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Martin Tzvetanov Grigorov commented on WICKET-7071:
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{quote}see the linked runnable example
{quote}
Unfortunately the linked example is not created by the Wicket Quickstart
([https://wicket.apache.org/start/quickstart.html).] We recommend the
quickstart because it makes it easier to debug the application.
{quote} "{{{}java.lang.IllegalStateException: getInputStream() has already been
called for this request{}}}".
{quote}
Please paste the exception stack trace. It would make it clear why/where it
breaks.
> Problems when calling request.getInputStream() before executing WicketFilter
> ----------------------------------------------------------------------------
>
> Key: WICKET-7071
> URL: https://issues.apache.org/jira/browse/WICKET-7071
> Project: Wicket
> Issue Type: Bug
> Components: wicket-core
> Affects Versions: 10.0.0-M1, 9.14.0
> Environment: Java 17 or 21-ea; Jetty 11 or Tomcat 10.1.x; Wicket
> 10.0.0-M1 or 9.3+.
> Reporter: Sam Peters
> Priority: Major
> Fix For: 9.15.0, 10.0.0-M2
>
>
> Calling request.getInputStream() (without reading any data from the stream),
> followed by a WicketFilter, causes certain wicket requests to fail.
> If no call to request.getInputStream() is made, everything works as expected.
> See runnable, minimal Maven project here:
> [https://github.com/gluser1357/jerseyissues/tree/issue-4867-wicket10|https://github.com/gluser1357/jerseyissues/tree/issue-4867-wicket10]
> > readme.txt.
> The issue is always reproducable e. g. in Jetty 11 and Tomcat 10.1.x (Jakarta
> Servlet 5+).
> A use case for the described filter combination is e. g. to add an existing
> Jersey-based authorization filter in front of a Wicket application. Since
> Jersey calls at some point request.getInputStream(), our Wicket application
> fails at then. See more details on this here:
> [https://github.com/eclipse-ee4j/jersey/issues/4867|https://github.com/eclipse-ee4j/jersey/issues/4867]
>
>
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