Hi all,
I'm having trouble getting ContextResolver implementations to work. I want
to be able to inject arbitrary classes into my JAX-RS resources using
@Context but regardless of how I try to do this it always causes either
exceptions or the field remains null. I'm using the servlet container. I've
reduced it to the simplest possible case :
@Provider
@Produces(MediaType.APPLICATION_JSON)
public class TestResolver implements ContextResolver<TestInjectedObject> {
@Override
public TestInjectedObject getContext(Class<?> c) {
return new TestInjectedObject();
}
}
and in a resource :
@Context
TestInjectedObject test;
Depending on the jersey version and some settings fiddling this either
remains null or throws this exception :
WARNING: StandardWrapperValve[config]: PWC1382: Allocate exception for
servlet config
com.sun.jersey.spi.inject.Errors$ErrorMessagesException
at com.sun.jersey.spi.inject.Errors.processErrorMessages(Errors.java:170)
at com.sun.jersey.spi.inject.Errors.postProcess(Errors.java:137)
at com.sun.jersey.spi.inject.Errors.processWithErrors(Errors.java:203)
at
com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:695)
at
com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:690)
at
com.sun.jersey.spi.container.servlet.ServletContainer.initiate(ServletContainer.java:438)
at
com.sun.jersey.spi.container.servlet.ServletContainer$InternalWebComponent.initiate(ServletContainer.java:287)
at
com.sun.jersey.spi.container.servlet.WebComponent.load(WebComponent.java:587)
at
com.sun.jersey.spi.container.servlet.WebComponent.init(WebComponent.java:213)
at
com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:342)
at
com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:516)
at javax.servlet.GenericServlet.init(GenericServlet.java:242)
at
com.exmachina.play2tv.commons.services.ServiceServlet.init(ServiceServlet.java:19)
at
org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1428)
at
org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:1060)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:187)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:641)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:97)
at
com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:85)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:185)
at
org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:325)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:226)
at
com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:165)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:693)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:954)
at
com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:170)
at
com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135)
at
com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102)
at
com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
at
com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53)
at
com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57)
at com.sun.grizzly.ContextTask.run(ContextTask.java:69)
at
com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330)
at
com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309)
at java.lang.Thread.run(Thread.java:619)
Am I trying to do something that isn't supposed to work in the first place
or am I doing something wrong? Also, if it is the first, why shouldn't I be
able to use the ContextResolver interface to do custom injection?
Remon.