ClassCast Exception when Using RemoteAuthenticationManager
Hi together,
we just implemented a client-server-application, by using spring-security 2.0.3, spring-rcp-snapshot (patched to work with spring-security) and hessian 3.1.3.
As the spring example does not work, we implemented our own (de-)serializer for hessian (see the following code).
Code:public class GrantedAuthoritySerializerFactory extends SerializerFactory{ private GrantedAuthorityDeserializer grantedAuthorityDeserializer = new GrantedAuthorityDeserializer(); private GrantedAuthoritySerializer grantedAuthoritysSerializer = new GrantedAuthoritySerializer(); @Override public Deserializer getDeserializer(Class clazz) throws HessianProtocolException { if (GrantedAuthority.class.isAssignableFrom(clazz)){ return grantedAuthorityDeserializer; } return super.getDeserializer(clazz); } @Override public Serializer getSerializer(Class clazz) throws HessianProtocolException { if (GrantedAuthority.class.isAssignableFrom(clazz)){ return grantedAuthoritysSerializer; } return super.getSerializer(clazz); }Code:public class GrantedAuthorityDeserializer extends AbstractDeserializer { @Override public Object readObject(AbstractHessianInput in) throws IOException { return super.readObject(in); } public GrantedAuthority readMap(AbstractHessianInput in) throws IOException { String clazz = null; String value = null; while (!in.isEnd()) { clazz = in.readString(); value = in.readString(); } in.readMapEnd(); if (clazz == null) throw new IOException( "Expected GrantedAuthorityImpl class name"); if (value == null) throw new IOException( "Expected GrantedAuthorityImpl class value"); GrantedAuthority authority = new GrantedAuthorityImpl(value); return authority; }We registered the service in the server like this:Code:public class GrantedAuthoritySerializer extends AbstractSerializer{ @Override public void writeObject(Object obj, AbstractHessianOutput out) throws IOException { if (!(obj instanceof GrantedAuthorityImpl)) throw new IOException("GrantedAuthoritySerializer can only serialize GrantedAuthorityImpl objects"); GrantedAuthority authority = (GrantedAuthorityImpl) obj; Class cl = obj.getClass(); out.writeMapBegin(cl.getName()); out.writeString(cl.getName()); out.writeString(authority.getAuthority()); out.writeMapEnd(); } }
and in the client:Code:<!-- Hessian exporter for the RemoteAuthenticationManager --> <bean name="/RemoteAuthenticationManager" class="org.springframework.remoting.caucho.HessianServiceExporter"> <property name="service" ref="remoteAuthenticationManager"/> <property name="serviceInterface" value="org.springframework.security.providers.rcp.RemoteAuthenticationManager" /> <property name="serializerFactory" ref="serializerFactory"/> <property name="debug" value="true"/> </bean> <bean id="serializerFactory" class="de.hr.ec.fsm.common.GrantedAuthoritySerializerFactory"/>
Our problem is an internal ClassCastException (see the stacktrace):Code:<!-- Proxy for the Hessian-exported RemoteAuthenticationManager --> <bean id="remoteAuthenticationManager" class="org.springframework.remoting.caucho.HessianProxyFactoryBean"> <property name="serviceInterface" value="org.springframework.security.providers.rcp.RemoteAuthenticationManager" /> <property name="serviceUrl" value="http://${serverName}:${httpPort}${contextPath}/ws/RemoteAuthenticationManager" /> <property name="serializerFactory" ref="serializerFactory"/> <property name="debug" value="true"/> </bean> <bean id="serializerFactory" class="de.hr.ec.fsm.common.GrantedAuthoritySerializerFactory"/>
Does anyone has an idea, whats going wrong here?Code:java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to [Lorg.springframework.security.GrantedAuthority; at $Proxy22.attemptAuthentication(Unknown Source) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.remoting.caucho.HessianClientInterceptor.invoke(HessianClientInterceptor.java:218) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) at $Proxy23.attemptAuthentication(Unknown Source) at org.springframework.security.providers.rcp.RemoteAuthenticationProvider.authenticate(RemoteAuthenticationProvider.java:61) at org.springframework.security.providers.ProviderManager.doAuthentication(ProviderManager.java:195) at org.springframework.security.AbstractAuthenticationManager.authenticate(AbstractAuthenticationManager.java:46) at org.springframework.richclient.security.support.DefaultApplicationSecurityManager.doLogin(DefaultApplicationSecurityManager.java:160) at de.hr.ec.fsm.gui.commands.LoginCommand$1.onFinish(LoginCommand.java:122) at org.springframework.richclient.dialog.ApplicationDialog$1.doExecuteCommand(ApplicationDialog.java:502) at org.springframework.richclient.command.ActionCommand.execute(ActionCommand.java:195) at org.springframework.richclient.command.ActionCommand$1.actionPerformed(ActionCommand.java:126) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2028) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2351) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236) at java.awt.Component.processMouseEvent(Component.java:6126) at javax.swing.JComponent.processMouseEvent(JComponent.java:3265) at java.awt.Component.processEvent(Component.java:5891) at java.awt.Container.processEvent(Container.java:2102) at java.awt.Component.dispatchEventImpl(Component.java:4497) at java.awt.Container.dispatchEventImpl(Container.java:2160) at java.awt.Component.dispatchEvent(Component.java:4327) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4366) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4030) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3960) at java.awt.Container.dispatchEventImpl(Container.java:2146) at java.awt.Window.dispatchEventImpl(Window.java:2440) at java.awt.Component.dispatchEvent(Component.java:4327) at java.awt.EventQueue.dispatchEvent(EventQueue.java:599) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:300) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:210) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:204) at java.awt.Dialog$1.run(Dialog.java:1045) at java.awt.Dialog$3.run(Dialog.java:1097) at java.security.AccessController.doPrivileged(Native Method) at java.awt.Dialog.show(Dialog.java:1095) at java.awt.Component.show(Component.java:1422) at java.awt.Component.setVisible(Component.java:1375) at java.awt.Window.setVisible(Window.java:806) at java.awt.Dialog.setVisible(Dialog.java:985) at org.springframework.richclient.dialog.ApplicationDialog.showDialog(ApplicationDialog.java:421) at de.hr.ec.fsm.gui.commands.LoginCommand.doExecuteCommand(LoginCommand.java:157) at org.springframework.richclient.command.ActionCommand.execute(ActionCommand.java:195) at de.hr.ec.fsm.gui.FSMLifecycleAdvisor.onCommandsCreated(FSMLifecycleAdvisor.java:42) at org.springframework.richclient.application.support.AbstractApplicationWindow.<init>(AbstractApplicationWindow.java:85) at com.jidesoft.spring.richclient.docking.JideApplicationWindow.<init>(JideApplicationWindow.java:56) at com.jidesoft.spring.richclient.docking.JideApplicationWindow.<init>(JideApplicationWindow.java:51) at com.jidesoft.spring.richclient.docking.JideApplicationWindowFactory$1.<init>(JideApplicationWindowFactory.java:76) at com.jidesoft.spring.richclient.docking.JideApplicationWindowFactory.createApplicationWindow(JideApplicationWindowFactory.java:76) at org.springframework.richclient.application.Application.createNewWindow(Application.java:182) at org.springframework.richclient.application.Application.openWindow(Application.java:163) at org.springframework.richclient.application.Application.start(Application.java:244) at org.springframework.richclient.application.ApplicationLauncher$1.run(ApplicationLauncher.java:307) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:199) at java.awt.EventQueue.dispatchEvent(EventQueue.java:597) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:300) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:210) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:200) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:195) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:187) at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)
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