[jira] [Commented] (GERONIMO-6560) JSON spec jar is not able to load provider in an OSGi environment

["Konrad Windszus (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/GERONIMO-6560?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17001907#comment-17001907 ] 

Konrad Windszus commented on GERONIMO-6560:
-------------------------------------------

Just for the reference: the bundle at https://github.com/apache/sling-org-apache-sling-commons-johnzon embeds both Johnzon and JSON-P API and overwrites the JSONProvider code to always load Johnzon (instead of relying on the service loader API).

> JSON spec jar is not able to load provider in an OSGi environment
> -----------------------------------------------------------------
>
>                 Key: GERONIMO-6560
>                 URL: https://issues.apache.org/jira/browse/GERONIMO-6560
>             Project: Geronimo
>          Issue Type: Bug
>      Security Level: public(Regular issues) 
>            Reporter: Robert Munteanu
>            Priority: Major
>
> I am trying to use org.apache.geronimo.specs:geronimo-json_1.0_spec:1.0-alpha-1 together with Apache Johnzon in a minimal OSGi environment ( see https://lists.apache.org/thread.html/52ecda6f7b859fa9cdd4d9fb64d6f7a3b54f29f971e5536e844d9150@%3Cdev.johnzon.apache.org%3E for more details ).
> Looking at the manifest of the JSON spec I can see it has no way of loading classes from another jar, and it fails at runtime:
> {noformat}javax.json.JsonException: org.apache.johnzon.core.JsonProviderImpl not
> found
>         at
> javax.json.spi.JsonProvider.doLoadProvider(JsonProvider.java:132)
>         at javax.json.spi.JsonProvider.provider(JsonProvider.java:64)
>         at javax.json.Json.createGenerator(Json.java:48)
>         at
> ro.lmn.routeradmin.web.impl.AdminServlet.doGet(AdminServlet.java:33)
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:618)
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
>         at
> org.apache.felix.http.base.internal.handler.ServletHandler.handle(Servl
> etHandler.java:85)
>         at
> org.apache.felix.http.base.internal.dispatch.InvocationChain.doFilter(I
> nvocationChain.java:79)
>         at
> org.apache.felix.http.base.internal.dispatch.Dispatcher.dispatch(Dispat
> cher.java:124)
>         at
> org.apache.felix.http.base.internal.DispatcherServlet.service(Dispatche
> rServlet.java:61)
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
>         at
> org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:845)
>         at
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:5
> 83)
>         at
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler
> .java:224)
>         at
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler
> .java:1174)
>         at
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:51
> 1)
>         at
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.
> java:185)
>         at
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.
> java:1106)
>         at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.jav
> a:141)
>         at
> org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(Contex
> tHandlerCollection.java:213)   
>         at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.j
> ava:134)
>         at org.eclipse.jetty.server.Server.handle(Server.java:524)
>         at
> org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:319)
>         at
> org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:
> 253)
>         at
> org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(Abstract
> Connection.java:273)
>         at
> org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)
>         at
> org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.
> java:93)
>         at
> org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executePro
> duceConsume(ExecuteProduceConsume.java:303)
>         at
> org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceCon
> sume(ExecuteProduceConsume.java:148)
>         at
> org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(Execut
> eProduceConsume.java:136)
>         at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.
> java:671)
>         at
> org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.j
> ava:589)
>         at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.ClassNotFoundException:
> org.apache.johnzon.core.JsonProviderImpl
>         at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
>         at
> sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
>         at
> javax.json.spi.JsonProvider.doLoadProvider(JsonProvider.java:129)
>         ... 32 more{noformat}



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