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https://issues.apache.org/jira/browse/CXF-6480?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Colm O hEigeartaigh closed CXF-6480.
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> InjectionUtils createThreadLocalServletApiContext better error message for
> invalid @Context classes
> ---------------------------------------------------------------------------------------------------
>
> Key: CXF-6480
> URL: https://issues.apache.org/jira/browse/CXF-6480
> Project: CXF
> Issue Type: Bug
> Components: JAX-RS
> Reporter: Ravi Luthra
> Assignee: Sergey Beryozkin
> Priority: Trivial
> Fix For: 3.0.6, 2.7.17, 3.1.2
>
>
> When you have an \@Context field in a JAXRS class (maybe JAXWS too?) there is
> a select list of possible proxy classes. This method checks for the proxy
> class using an if/else/if/else... structure, but there is no final else
> clause with a good exception. Instead the method attempts to instantiate a
> null class name (proxyClassName), which throws a NullPointerException. This
> leaves the method wrapped inside a RuntimeException. A common forgetful
> change someone might make is to add
> {code}@Context private HttpSession session; //(instead of private
> HttpServletRequest){code}
> Which leaves a massive stack trace leaving just an NPE and Spring also tends
> to obscure the stack-trace of this issue. A better error would be to suggest
> that the given class ...HttpSession is not a valid Context type. No proxy
> classes can be created for this type.
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