[jboss-user] [JBoss Seam] - ResourceServlet with injection
Hi guys,
Just been having a little play with the ResourceServlet - looks pretty sweet - I got some
resources serving in a couple of minutes!
I initially copied code from CaptchaImage, then wanted to get a bit of injection going, so
removed the @Intercept(NEVER) annotation.
20:04:31,140 ERROR [[SeamResourceServlet]] Allocate exception for servlet
SeamResourceServlet
| java.lang.IllegalArgumentException: Protected method:
setServletContext(Ljavax/servlet/ServletContext;)V
| at net.sf.cglib.proxy.MethodProxy$1.invoke(MethodProxy.java:55)
| at
org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:89)
| at
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:57)
| at
org.jboss.seam.interceptors.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:34)
| at
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
| at
org.jboss.seam.interceptors.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:47)
| at
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
| at
org.jboss.seam.interceptors.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:27)
| at
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
| at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:113)
| at
org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:145)
| at
org.jboss.seam.intercept.JavaBeanInterceptor.intercept(JavaBeanInterceptor.java:80)
| at
uk.co.this.isnt.really.my.domain.AttachmentResource$$EnhancerByCGLIB$$5ca4ae58.setServletContext(<generated>)
| at
org.jboss.seam.servlet.ResourceServlet.loadResourceProviders(ResourceServlet.java:48)
| at org.jboss.seam.servlet.ResourceServlet.init(ResourceServlet.java:35)
| at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1105)
| at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:757)
| at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:130)
| at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
| at
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
| at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
| at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
| at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
| at
org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
| at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
| at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
| at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
| at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
| at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
| at
org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
| at java.lang.Thread.run(Thread.java:595)
Looks like the CGLIB enhanced class doesnt like calling protected methods... I overrided
the get+setServletContext with public modifiers, and also the getResourcePath. And now it
seems to work fine.
So my question is - is it safe / intended to do injection like this (I hope so!), its a
bit different to the way the CaptchaImage works, but presumably
because the CaptchaImage doesnt have any dependencies, it doesnt need it.
And generally, are there any other bits i should know about when creating resources like
this?
Cheers - Ben
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