3 Replies Latest reply on Jan 18, 2008 4:06 AM by nickarls

Could not instantiate Seam component

hanram Dec 11, 2007 3:26 AM

hello friends,

Why this error will occur? Can any one tell me proper reason..

org.jboss.seam.InstantiationException: Could not instantiate Seam component: WDActionWService
 org.jboss.seam.Component.newInstance(Component.java:1962)
 org.jboss.seam.Component.getInstance(Component.java:1865)
 org.jboss.seam.Component.getInstance(Component.java:1832)
 org.jboss.seam.Namespace.getComponentInstance(Namespace.java:55)
 org.jboss.seam.Namespace.getComponentInstance(Namespace.java:50)
 org.jboss.seam.el.SeamELResolver.resolveBase(SeamELResolver.java:166)
 org.jboss.seam.el.SeamELResolver.getValue(SeamELResolver.java:53)
 javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53)
 com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:64)
 org.jboss.el.parser.AstIdentifier.getValue(AstIdentifier.java:44)
 org.jboss.el.parser.AstValue.getTarget(AstValue.java:34)
 org.jboss.el.parser.AstValue.invoke(AstValue.java:95)
 org.jboss.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276)
 com.sun.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:68)
 javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:77)
 com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:91)
 javax.faces.component.UICommand.broadcast(UICommand.java:383)
 javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:447)
 javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:752)
 com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:97)
 com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
 com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
 javax.faces.webapp.FacesServlet.service(FacesServlet.java:244)
 org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)


root cause

java.lang.NullPointerException
 org.jboss.seam.example.withdrawal.WithDrawalActionWService.<init>(WithDrawalActionWService.java:32)
 sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
 sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java

thx in advance,
Han

1. Re: Could not instantiate Seam component

pmuir Dec 26, 2007 4:45 PM (in response to hanram)

Please post the whole stack trace from the server log
Actions

2. Re: Could not instantiate Seam component

axismundi Jan 18, 2008 4:01 AM (in response to hanram)

I get the same exception. I suppose it has a root cause, which is a cycle in page-redirection. But I wonder why the root-cause is not logged.
As you can draw from the stacktrace, we are using Icefaces (1.6.1).
Btw., the ApplicationUser-class is not the problem.

2008-01-18 09:51:02,984 ERROR [com.icesoft.faces.facelets.D2DFaceletViewHandler] Problem in renderResponse: Could not instantiate Seam component: applicationUser
org.jboss.seam.InstantiationException: Could not instantiate Seam component: applicationUser
 at org.jboss.seam.Component.newInstance(Component.java:1962)
 at org.jboss.seam.Component.getInstance(Component.java:1865)
 at org.jboss.seam.Component.getInstance(Component.java:1832)
 at org.jboss.seam.Namespace.getComponentInstance(Namespace.java:55)
 at org.jboss.seam.Namespace.getComponentInstance(Namespace.java:50)
 at org.jboss.seam.el.SeamELResolver.resolveBase(SeamELResolver.java:166)
 at org.jboss.seam.el.SeamELResolver.getValue(SeamELResolver.java:53)
 at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53)
 at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:64)
 at org.jboss.el.parser.AstIdentifier.getValue(AstIdentifier.java:44)
 at org.jboss.el.parser.AstValue.getValue(AstValue.java:63)
 at org.jboss.el.parser.AstDeferredExpression.getValue(AstDeferredExpression.java:26)
 at org.jboss.el.parser.AstCompositeExpression.getValue(AstCompositeExpression.java:31)
 at org.jboss.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
 at com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:71)
 at javax.faces.component.UIOutput.getValue(UIOutput.java:173)
 at com.icesoft.faces.renderkit.dom_html_basic.DomBasicInputRenderer.getValue(DomBasicInputRenderer.java:60)
 at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.getValue(DomBasicRenderer.java:153)
 at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeEnd(DomBasicRenderer.java:125)
 at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:836)
 at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:361)
 at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:357)
 at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:357)
 at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:357)
 at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:357)
 at com.icesoft.faces.renderkit.dom_html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:92)
 at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
 at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:351)
 at com.icesoft.faces.renderkit.dom_html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:92)
 at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
 at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:585)
 at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:589)
 at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:589)
 at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:589)
 at com.icesoft.faces.facelets.D2DFaceletViewHandler.renderResponse(D2DFaceletViewHandler.java:322)
 at com.icesoft.faces.application.D2DViewHandler.renderView(D2DViewHandler.java:153)
 at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)
 at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
 at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144)
 at com.icesoft.faces.webapp.http.core.PageServer$1.respond(PageServer.java:26)
 at com.icesoft.faces.webapp.http.servlet.ServletRequestResponse.respondWith(ServletRequestResponse.java:147)
 at com.icesoft.faces.webapp.http.servlet.ThreadBlockingAdaptingServlet$ThreadBlockingRequestResponse.respondWith(ThreadBlockingAdaptingServlet.java:36)
 at com.icesoft.faces.webapp.http.core.PageServer.service(PageServer.java:31)
 at com.icesoft.faces.webapp.http.core.SingleViewServer.service(SingleViewServer.java:46)
 at com.icesoft.faces.webapp.http.common.standard.PathDispatcherServer$Matcher.serviceOnMatch(PathDispatcherServer.java:50)
 at com.icesoft.faces.webapp.http.common.standard.PathDispatcherServer.service(PathDispatcherServer.java:19)
 at com.icesoft.faces.webapp.http.servlet.ThreadBlockingAdaptingServlet.service(ThreadBlockingAdaptingServlet.java:19)
 at com.icesoft.faces.webapp.http.servlet.EnvironmentAdaptingServlet.service(EnvironmentAdaptingServlet.java:29)
 at com.icesoft.faces.webapp.http.servlet.MainSessionBoundServlet.service(MainSessionBoundServlet.java:110)
 at com.icesoft.faces.webapp.http.servlet.SessionDispatcher.service(SessionDispatcher.java:35)
 at com.icesoft.faces.webapp.http.servlet.PathDispatcher$Matcher.serviceOnMatch(PathDispatcher.java:52)
 at com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:29)
 at com.icesoft.faces.webapp.http.servlet.MainServlet.service(MainServlet.java:97)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at de.swm.kundenportal.web.NtlmAuthenticationFilter.doFilter(NtlmAuthenticationFilter.java:37)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
 at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
 at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
 at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:85)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
 at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
 at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:44)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
 at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
 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.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
 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.valves.AccessLogValve.invoke(AccessLogValve.java:543)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:241)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:580)
 at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
 at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.InstantiationException: de.swm.kundenportal.model.ApplicationUser
 at java.lang.Class.newInstance0(Class.java:335)
 at java.lang.Class.newInstance(Class.java:303)
 at org.jboss.seam.Component.instantiateJavaBean(Component.java:1304)
 at org.jboss.seam.Component.instantiate(Component.java:1260)
 at org.jboss.seam.Component.newInstance(Component.java:1958)
 ... 90 more
2008-01-18 09:51:03,531 ERROR [org.jboss.seam.web.ExceptionFilter] handling uncaught exception
javax.faces.FacesException: Problem in renderResponse: Could not instantiate Seam component: applicationUser
 at com.icesoft.faces.facelets.D2DFaceletViewHandler.renderResponse(D2DFaceletViewHandler.java:329)
............

the same stacktrace is repeating numerous times

3. Re: Could not instantiate Seam component

nickarls Jan 18, 2008 4:06 AM (in response to hanram)

And you have a no-args constructor on ApplicationUser?
Actions

Go to original post