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https://issues.apache.org/jira/browse/MYFACES-3581?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13420617#comment-13420617
]
Leonardo Uribe commented on MYFACES-3581:
-----------------------------------------
Sounds like something that shouldn't be fixed in that way. Take a look at the
fragment:
@ManagedBean
@ViewScoped
public class BlogMB implements Serializable {
private static final long serialVersionUID = 1L;
@EJB
private CategoryService categoryService;
}
When view scope implements Serializable, it means all info is
serialized/deserialized automatically. So, the serialization algorithm doesn't
understand the bean annotation, just serialize CategoryService and the
exception is received when the bean in deserialized, because it tries to create
CategoryService, which clearly shouldn't be included into view state.
The solution is create a request scope bean and execute the operations between
the view scope bean and the service there. Even if with the patch works, the
reference stored by categoryService will be invalid.
Maybe it is a good idea to create a custom scope that understand the logic
behind the annotations and can deal with serialization/deserialization process
in a gracefully way, but it maybe sounds overkill. If no objections I'll close
this one as invalid.
> @EJB injection into a @ViewScoped bean causes CNFE
> --------------------------------------------------
>
> Key: MYFACES-3581
> URL: https://issues.apache.org/jira/browse/MYFACES-3581
> Project: MyFaces Core
> Issue Type: Bug
> Affects Versions: 2.1.8
> Environment: Oracle JVM 1.7.04, Apache TomEE
> Reporter: Jonathan S Fisher
> Assignee: Leonardo Uribe
> Attachments: MYFACES-3581.patch
>
> Original Estimate: 48h
> Remaining Estimate: 48h
>
> If you have a ViewScoped ManagedBean, @EJB injection appears to fail when an
> ajax request is submitted. This may be because the MyFacesObjectInputStream
> is not using the context class loader.
> See original bug report here:
> http://stackoverflow.com/questions/11371573/jsf2-0-ejb-injection-into-viewscoped-causing-myfaces-to-cfne/11371846#11371846
> @ManagedBean
> @ViewScoped
> public class BlogMB implements Serializable {
> private static final long serialVersionUID = 1L;
> @EJB
> private CategoryService categoryService;
> }
> Here's the view code:
> <h:commandLink value="#{category.name}">
> <f:setPropertyActionListener
> target="#{blogMB.selectedCategory}"
> value="#{category}" />
> <f:ajax
> listener="#{blogMB.filterPostsByCategory()}"
> execute="@this"
> render=":blogPosts" />
> </h:commandLink>
> This will cause the following exception:
> Jul 06, 2012 8:25:51 PM org.apache.myfaces.renderkit.ServerSideStateCacheImpl
> deserializeView
> SEVERE: Exiting deserializeView - Could not deserialize state:
> com.xxx.blog.service.CategoryService
> java.lang.ClassNotFoundException: com.xxx.blog.service.CategoryService
> at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
> at java.lang.Class.forName0(Native Method)
> at java.lang.Class.forName(Class.java:264)
> at java.io.ObjectInputStream.resolveProxyClass(ObjectInputStream.java:694)
> at java.io.ObjectInputStream.readProxyDesc(ObjectInputStream.java:1549)
> at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1511)
> at
> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1750)
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347)
> at
> java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1964)
> at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1888)
> at
> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771)
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347)
> at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369)
> at java.util.HashMap.readObject(HashMap.java:1043)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:601)
> at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1004)
> at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1866)
> at
> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771)
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347)
> at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1685)
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1341)
> at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369)
> at java.util.HashMap.readObject(HashMap.java:1043)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:601)
> at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1004)
> at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1866)
> at
> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771)
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347)
> at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1685)
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1341)
> at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369)
> at
> org.apache.myfaces.renderkit.ServerSideStateCacheImpl.deserializeView(ServerSideStateCacheImpl.java:497)
> at
> org.apache.myfaces.renderkit.ServerSideStateCacheImpl.getSerializedViewFromServletSession(ServerSideStateCacheImpl.java:289)
> at
> org.apache.myfaces.renderkit.ServerSideStateCacheImpl.restoreSerializedView(ServerSideStateCacheImpl.java:891)
> at
> org.apache.myfaces.renderkit.html.HtmlResponseStateManager.getState(HtmlResponseStateManager.java:205)
> at
> org.apache.myfaces.view.facelets.DefaultFaceletsStateManagementStrategy.restoreView(DefaultFaceletsStateManagementStrategy.java:207)
> at
> org.apache.myfaces.application.StateManagerImpl.restoreView(StateManagerImpl.java:130)
> at
> org.apache.myfaces.shared.view.ViewDeclarationLanguageBase.restoreView(ViewDeclarationLanguageBase.java:106)
> at
> org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage.restoreView(FaceletViewDeclarationLanguage.java:2109)
> at
> org.apache.myfaces.application.ViewHandlerImpl.restoreView(ViewHandlerImpl.java:300)
> at
> com.ocpsoft.pretty.faces.application.PrettyViewHandler.restoreView(PrettyViewHandler.java:109)
> at
> javax.faces.application.ViewHandlerWrapper.restoreView(ViewHandlerWrapper.java:83)
> at
> org.apache.myfaces.lifecycle.RestoreViewExecutor.execute(RestoreViewExecutor.java:127)
> at
> org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:170)
> at
> org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
> at javax.faces.webapp.FacesServlet.service(FacesServlet.java:197)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
> at com.ocpsoft.pretty.PrettyFilter.doFilter(PrettyFilter.java:145)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
> at
> org.omnifaces.filter.GzipResponseFilter.doFilter(GzipResponseFilter.java:147)
> at org.omnifaces.filter.HttpFilter.doFilter(HttpFilter.java:75)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
> at org.apache.tomee.catalina.OpenEJBValve.invoke(OpenEJBValve.java:44)
> at
> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
> at
> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
> at
> org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:999)
> at
> org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:565)
> at
> org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
> at java.lang.Thread.run(Thread.java:722)
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