1:13 p.m.
Hi - I'm looking at using Seam as a solution for a large-scale web application,
however I am growing increasingly frustrated by two errors that keep coming up:
1. "NoClassDefFoundError" for beans I have created and definitely exist in the
EAR
2. "value of context variable is not an instance of the component bound to the
context variable: ..."
Usually, redeploying once (sometimes more) will fix these problems when they crop up.
What are causing these? It doesn't seem like it's my code, since a redeployment
fixes them. What can I do so that these stop becoming an issue?
(I'm using JBoss 4.2.1 and Seam 1.2.1)
Here's an example stacktrace of simply calling my authenticator bean from a login
form. Thanks in advance!
13:03:55,841 ERROR [SeamLoginModule] Error invoking login method
| java.lang.IllegalArgumentException: value of context variable is not an instance of
the component bound to the context variable: authenticator
| at org.jboss.seam.Component.getInstance(Component.java:1655)
| at org.jboss.seam.Component.getInstance(Component.java:1610)
| at org.jboss.seam.Component.getInstance(Component.java:1604)
| at org.jboss.seam.jsf.SeamELResolver.getValue(SeamELResolver.java:49)
| at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53)
| at
com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:64)
| at org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:45)
| at org.apache.el.parser.AstValue.getTarget(AstValue.java:42)
| at org.apache.el.parser.AstValue.invoke(AstValue.java:127)
| at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276)
| at
com.sun.faces.application.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:77)
| at
org.jboss.seam.actionparam.ActionParamBindingHelper.invokeTheExpression(ActionParamBindingHelper.java:58)
| at
org.jboss.seam.actionparam.ActionParamMethodBinding.invoke(ActionParamMethodBinding.java:75)
| at org.jboss.seam.core.Expressions$2.invoke(Expressions.java:148)
| at
org.jboss.seam.security.jaas.SeamLoginModule.login(SeamLoginModule.java:104)
| 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 javax.security.auth.login.LoginContext.invoke(LoginContext.java:769)
| at javax.security.auth.login.LoginContext.access$000(LoginContext.java:186)
| at javax.security.auth.login.LoginContext$5.run(LoginContext.java:706)
| at java.security.AccessController.doPrivileged(Native Method)
| at
javax.security.auth.login.LoginContext.invokeCreatorPriv(LoginContext.java:703)
| at javax.security.auth.login.LoginContext.login(LoginContext.java:575)
| at org.jboss.seam.security.Identity.authenticate(Identity.java:247)
| at org.jboss.seam.security.Identity.authenticate(Identity.java:240)
| at org.jboss.seam.security.Identity.login(Identity.java:170)
| 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.apache.el.parser.AstValue.invoke(AstValue.java:131)
| at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276)
| at
com.sun.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:68)
| at
javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:77)
| at
com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:91)
| at javax.faces.component.UICommand.broadcast(UICommand.java:383)
| at
org.ajax4jsf.framework.ajax.AjaxViewRoot.processEvents(AjaxViewRoot.java:180)
| at
org.ajax4jsf.framework.ajax.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:158)
| at
org.ajax4jsf.framework.ajax.AjaxViewRoot.processApplication(AjaxViewRoot.java:346)
| at
com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:97)
| at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
| at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
| at javax.faces.webapp.FacesServlet.service(FacesServlet.java:244)
| at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
| at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
| at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
| at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
| at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
| at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:57)
| at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
| at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
| at
org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:127)
| at
org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:277)
| at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
| at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
| at
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
| at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
| at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
| at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
| at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
| at
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
| at
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
| at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
| at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
| at
org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
| at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
| at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:241)
| at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:437)
| at
org.apache.coyote.ajp.AjpProtocol$AjpConnectionHandler.process(AjpProtocol.java:381)
| at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
| at java.lang.Thread.run(Thread.java:619)
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