Hi Robert!
I guess our lookup code does pretty much the same like with every other
Geronimo spec.
We first try to pickup a JsonProvider via the ServiceLoader mechanism. Of
course that means that META-INF/services/javax.json.spi.JsonProvider needs to
be 'visible' via OSGi tricks.
If we don't find that then we try to load the hardcoded default provider which
is
DEFAULT_PROVIDER = "org.apache.johnzon.core.JsonProviderImpl";
I assume since we do not OSGi-import johnzon in the geronimo-json_1.1-spec.jar,
we also don't see the JsonProviderImpl from Johnzon from the spec jar?
I'm not really deep into OSGi, but I assume Romain can help you.
LieGrue,
strub
> Am 23.11.2016 um 23:37 schrieb Robert Munteanu <romb...@apache.org>:
>
> Hi,
>
> I noticed that Johnzon has OSGi headers, which is nice :-)
>
> I am trying to setup Johnzon in a minimal OSGi container. I have a
> bundle which performs a very simple JSON rendering:
>
> try ( JsonGenerator g =
> Json.createGenerator(resp.getOutputStream())) {
> resp.setContentType("application/json");
> g.writeStartObject()
> .write("enabled", routerAdmin.isWlanEnabled() )
> .writeEnd();
> } catch (AuthException e) {
> resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR
> );
> }
>
> I am deploying the following bundles to my container:
>
> - Johnzon :: Core (0.9.4) - org.apache.johnzon:johnzon-core:0.9.4
> - Apache Geronimo JSon Spec 1.0 (1.0.0.alpha-1) -
> org.apache.geronimo.specs:geronimo-json_1.0_spec:1.0-alpha-1
>
> The code fails with
>
> javax.json.JsonException: org.apache.johnzon.core.JsonProviderImpl
> not found
>
> (full stack trace at the end ).
>
> My question is - is this a supported scenario? Looking at the bundle
> headers I don't see how the wiring could happen between these the JSON
> API and Johnzon Core bundles, as they know nothing about each other.
>
> (Please keep me in CC, I am not subscribed).
>
> Thanks,
>
> Robert
>
> 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
