Seam Framework - action for s:link is tried to be resolved as property

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
	xmlns:ui="http://java.sun.com/jsf/facelets"
	xmlns:h="http://java.sun.com/jsf/html"
	xmlns:f="http://java.sun.com/jsf/core"
	xmlns:c="http://java.sun.com/jstl/core"
	xmlns:a4j="https://ajax4jsf.dev.java.net/ajax"
	xmlns:s="http://jboss.com/products/seam/taglib"
	xmlns:fn="http://java.sun.com/jsp/jstl/functions">

  <head>
  <title>Test</title>
  </head>
  <body id="body">
    <s:link value="Logout" action="#{identity.logout}"/>
  </body>
</html>

I would expect that a link will be created that will call the logout method on a bean registered with the name identity. However when the pages gets rendered the following stacktrace is written to sterr:

14:25:41,407 ERROR [STDERR] May 22, 2008 2:25:41 PM com.sun.facelets.FaceletViewHandler handleRenderException
SEVERE: Error Rendering View[/test.xhtml]
javax.el.ELException: /test.xhtml: Property 'logout' not found on type org.jboss.seam.security.Identity
        at com.sun.facelets.compiler.AttributeInstruction.write(AttributeInstruction.java:53)
        at com.sun.facelets.compiler.UIInstructions.encodeBegin(UIInstructions.java:39)
        at com.sun.facelets.compiler.UILeaf.encodeAll(UILeaf.java:149)
        at javax.faces.component.UIComponent.encodeAll(UIComponent.java:892)
        at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592)
        at org.ajax4jsf.framework.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
        at org.ajax4jsf.framework.ajax.AjaxViewHandler.renderView(AjaxViewHandler.java:233)
        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 javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
        at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
        at org.jboss.seam.servlet.SeamFilter$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:45)
        at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
        at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
        at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
        at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
        at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:241)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
        at org.apache.coyote.http11.Http11Protocol$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)

The correct bean is resolved (org.jboss.seam.security.Identity), but instead of a method I read that a property cannot be found with the name logout. This is true of course, but I was expecting a link to a method, not to a property.

This is actually my first real Seam project, so if it's due to a really basic issue I apologise in advance ;)

Jboss 4.2.1.GA Java HotSpot(TM) 64-Bit Server VM (build 1.5.0_15-b04, mixed mode)

Any help is appreciated!

Regards, Aede

Tags: ICEFaces | facelets

5 Replies:

Re: action for s:link is tried to be resolved as property

22. May 2008, 16:29 CET | Link

Daniel Roth

Try to add form tags.


<h:form>
    <s:link value="Logout" action="#{identity.logout}"/>
</h:form>

Re: action for s:link is tried to be resolved as property

22. May 2008, 17:46 CET | Link

Aede van der Weij

Thank you for you response! Unfortunately I get the same stackstrace.Putting it in a form tag does not appear to be the answer.

Re: action for s:link is tried to be resolved as property

23. May 2008, 16:20 CET | Link

Aede van der Weij

I think I'm on to something. After comparing the old (working) version to the new build I discovered to be missing the jboss-seam-ui.jar (the one with the org.jboss.seam.ui.component.html.* classes).

When I over come another emerged problem I'll try it out, and report back with the result.

Re: action for s:link is tried to be resolved as property

23. May 2008, 17:21 CET | Link

Aede van der Weij

The javax.el.ELException exception is gone. Instead a new one appears in my logs:

java.lang.NoClassDefFoundError: com/sun/facelets/tag/jsf/ComponentHandler
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at org.jboss.mx.loading.RepositoryClassLoader.findClassLocally(RepositoryClassLoader.java:675)
        at org.jboss.mx.loading.RepositoryClassLoader.findClass(RepositoryClassLoader.java:655)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        at org.jboss.mx.loading.RepositoryClassLoader.loadClassLocally(RepositoryClassLoader.java:193)
        at org.jboss.mx.loading.ClassLoadingTask$ThreadTask.run(ClassLoadingTask.java:131)
        at org.jboss.mx.loading.LoadMgr3.nextTask(LoadMgr3.java:399)
        at org.jboss.mx.loading.RepositoryClassLoader.loadClassImpl(RepositoryClassLoader.java:520)
        at org.jboss.mx.loading.RepositoryClassLoader.loadClass(RepositoryClassLoader.java:408)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
        at java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:579)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1345)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:242)
        at com.sun.facelets.util.ReflectionUtil.forName(ReflectionUtil.java:36)
        at com.sun.facelets.compiler.TagLibraryConfig$LibraryHandler.createClass(TagLibraryConfig.java:291)
        at com.sun.facelets.compiler.TagLibraryConfig$LibraryHandler.endElement(TagLibraryConfig.java:210)
        at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
        at org.apache.xerces.impl.dtd.XMLDTDValidator.endNamespaceScope(Unknown Source)
        at org.apache.xerces.impl.dtd.XMLDTDValidator.handleEndElement(Unknown Source)
        at org.apache.xerces.impl.dtd.XMLDTDValidator.endElement(Unknown Source)
        at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown Source)
        at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
        at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
        at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
        at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
        at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
        at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
        at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
        at javax.xml.parsers.SAXParser.parse(SAXParser.java:375)
        at javax.xml.parsers.SAXParser.parse(SAXParser.java:176)
        at com.sun.facelets.compiler.TagLibraryConfig.create(TagLibraryConfig.java:407)
        at com.sun.facelets.compiler.TagLibraryConfig.loadImplicit(TagLibraryConfig.java:431)
        at com.sun.facelets.compiler.Compiler.initialize(Compiler.java:87)
        at com.sun.facelets.compiler.Compiler.compile(Compiler.java:104)
        at com.sun.facelets.impl.DefaultFaceletFactory.createFacelet(DefaultFaceletFactory.java:197)
        at com.sun.facelets.impl.DefaultFaceletFactory.getFacelet(DefaultFaceletFactory.java:144)
        at com.sun.facelets.impl.DefaultFaceletFactory.getFacelet(DefaultFaceletFactory.java:95)
        at com.sun.facelets.FaceletViewHandler.buildView(FaceletViewHandler.java:517)
        at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:567)
        at org.ajax4jsf.framework.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
        at org.ajax4jsf.framework.ajax.AjaxViewHandler.renderView(AjaxViewHandler.java:233)
        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 javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        ... 30 more

I'll take it further from here...

Re: action for s:link is tried to be resolved as property

27. May 2008, 09:10 CET | Link

Aede van der Weij

Problems solved...

Lots of problems were caused by switching to Maven 2. Maven itself was not the problem but the way I had specified the dependencies. The seam jar for example would not only be packaged into the ear but also into the war. Also a JBoss jar (dom4j) was packaged causing ClassCastExceptions. This was actually caused by a dependency specified in JBoss Seam's parent POM which I used.

For anyone who encounters exceptions that are not addressed in this forum or others, check your jars... :)