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https://issues.apache.org/jira/browse/KARAF-4912?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15791028#comment-15791028
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Achim Nierbeck edited comment on KARAF-4912 at 1/1/17 1:00 PM:
---------------------------------------------------------------

I opened https://ops4j1.jira.com/browse/PAXWEB-1047 to track this. 
This upgrade does have some rather not so nice implications. 
ASM is an alpha version. 
Pax-Web requires xbeans in a newer version (XBEAN-296) also, but those are also 
only SNAPSHOT versions. 
In the end if we want to be JDK9 compliant it requires quite some 
synchronization between different projects. 


was (Author: achim_nierbeck):
I opened https://ops4j1.jira.com/browse/PAXWEB-1047 to track this. 

> Cannot register Servlet via http-whiteboard under Java 9
> --------------------------------------------------------
>
>                 Key: KARAF-4912
>                 URL: https://issues.apache.org/jira/browse/KARAF-4912
>             Project: Karaf
>          Issue Type: Bug
>          Components: karaf-feature, karaf-webcontainer
>    Affects Versions: 4.1.0
>         Environment: Linux (Ubuntu 12.4)
> Java 9 (JDK and JRE 9 - ea+149)
>            Reporter: Lijun Liao
>            Assignee: Achim Nierbeck
>             Fix For: 4.1.0
>
>         Attachments: ServletTest-0.0.1.jar, ServletTest-src.zip, karaf.log
>
>
> Under JDK / JRE 9 (tested with ea+149), it is impossibile to register the 
> servlet via http-whiteboard.
> Steps to reproduce the problem:
> 1. Delete the folder data
> 2. Start karaf {code}bin/karaf{code}
> 3. Install feature http-whiteboard {code}feature:install http-whiteboard{code}
> 3. Copy the attached ServletTest.jar to $KARAF_HOME/deploy. The blueprint 
> configuration tells karaf to register a servlet under the alias "/hw".
> 4. Open the browser and go to http://localhost:8181/hw, you will get an error.
> And ERROR message as follows will be logged in the data/log/karaf.log.
> {code}
> 2017-01-01T12:34:06,862 | ERROR | 
> fileinstall-/.../apache-karaf-4.1.0-SNAPSHOT/deploy | WebApplication          
>          | 97 - org.ops4j.pax.web.pax-web-extender-whiteboard - 6.0.0 | 
> Registration skipped for 
> [ServletWebElement{mapping=DefaultServletMapping{httpContextId=null,urlPatterns=null,initParams={},servlet=foo.HelloWorldServlet@61a63ed6,
>  alias=/hw, servletNamenull}}] due to error during registration
> {code}



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