Classe DiscoverSingleton not found

Bonjour,

J'avais des conflits au lancement de Tomcat et j'ai donc essayé de faire le ménage
dans les jar utilisées par mon appli.
Mon problème c'est que Tomcat ne se lance plus du tout et m'affiche le message ci-dessous.

Est-ce que quelqu'un pourrait m'aider svp?

Merci

Citation:

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GRAVE: An exception occurred
java.lang.NoClassDefFoundError: org/apache/commons/discovery/tools/DiscoverSingleton
at org.apache.myfaces.config.annotation.LifecycleProviderFactory.getLifecycleProviderFactory(LifecycleProviderFactory.java:38)
at org.apache.myfaces.config.ManagedBeanBuilder.buildManagedBean(ManagedBeanBuilder.java:82)
at org.apache.myfaces.el.unified.resolver.ManagedBeanResolver.createManagedBean(ManagedBeanResolver.java:198)
at org.apache.myfaces.el.unified.resolver.ManagedBeanResolver.getValue(ManagedBeanResolver.java:164)
at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53)
at org.apache.myfaces.el.unified.resolver.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:140)
at org.apache.myfaces.el.VariableResolverImpl.resolveVariable(VariableResolverImpl.java:64)
at org.apache.myfaces.el.convert.VariableResolverToELResolver.getValue(VariableResolverToELResolver.java:95)
at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53)
at org.apache.myfaces.el.unified.resolver.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:140)
at org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:61)
at org.apache.el.parser.AstValue.getValue(AstValue.java:107)
at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
at org.apache.jasper.el.JspValueExpression.getValue(JspValueExpression.java:101)
at javax.faces.component.UISelectItems.getValue(UISelectItems.java:78)
at org.apache.myfaces.trinidadinternal.renderkit.uix.SelectItemSupport.addSelectItems(SelectItemSupport.java:301)
at org.apache.myfaces.trinidadinternal.renderkit.uix.SelectItemSupport.getSelectItems(SelectItemSupport.java:119)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.SimpleSelectOneRenderer.getSelectItems(SimpleSelectOneRenderer.java:382)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.SimpleSelectOneRenderer.encodeAllAsElement(SimpleSelectOneRenderer.java:269)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.FormElementRenderer.encodeAll(FormElementRenderer.java:109)
at org.apache.myfaces.trinidad.render.CoreRenderer.delegateRenderer(CoreRenderer.java:446)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.InputLabelAndMessageRenderer.renderFieldCellContents(InputLabelAndMessageRenderer.java:146)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.LabelAndMessageRenderer._renderFieldCell(LabelAndMessageRenderer.java:450)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.LabelAndMessageRenderer.encodeAll(LabelAndMessageRenderer.java:332)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.InputLabelAndMessageRenderer.encodeAll(InputLabelAndMessageRenderer.java:124)
at org.apache.myfaces.trinidad.render.CoreRenderer.encodeEnd(CoreRenderer.java:335)
at org.apache.myfaces.trinidad.component.UIXComponentBase.encodeEnd(UIXComponentBase.java:751)
at org.apache.myfaces.trinidad.render.CoreRenderer.encodeChild(CoreRenderer.java:415)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.PanelHorizontalLayoutRenderer.encodeChild(PanelHorizontalLayoutRenderer.java:177)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.PanelHorizontalLayoutRenderer._encodeChildren(PanelHorizontalLayoutRenderer.java:160)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.PanelHorizontalLayoutRenderer.encodeAll(PanelHorizontalLayoutRenderer.java:85)
at org.apache.myfaces.trinidad.render.CoreRenderer.encodeEnd(CoreRenderer.java:335)
at org.apache.myfaces.trinidad.component.UIXComponentBase.encodeEnd(UIXComponentBase.java:751)
at org.apache.myfaces.trinidad.render.CoreRenderer.encodeChild(CoreRenderer.java:415)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.PanelFormLayoutRenderer._encodeFormItem(PanelFormLayoutRenderer.java:908)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.PanelFormLayoutRenderer.access$100(PanelFormLayoutRenderer.java:47)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.PanelFormLayoutRenderer$FormColumnEncoder.processComponent(PanelFormLayoutRenderer.java:1386)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.PanelFormLayoutRenderer$FormColumnEncoder.processComponent(PanelFormLayoutRenderer.java:1305)
at org.apache.myfaces.trinidad.component.UIXComponent.processFlattenedChildren(UIXComponent.java:126)
at org.apache.myfaces.trinidad.component.UIXComponent.processFlattenedChildren(UIXComponent.java:202)
at org.apache.myfaces.trinidad.component.UIXComponent.processFlattenedChildren(UIXComponent.java:168)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.PanelFormLayoutRenderer._encodeChildren(PanelFormLayoutRenderer.java:298)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.PanelFormLayoutRenderer.encodeAll(PanelFormLayoutRenderer.java:136)
at org.apache.myfaces.trinidad.render.CoreRenderer.encodeEnd(CoreRenderer.java:335)
at org.apache.myfaces.trinidad.component.UIXComponentBase.encodeEnd(UIXComponentBase.java:751)
at org.apache.myfaces.trinidad.render.RenderUtils.encodeRecursive(RenderUtils.java:70)
at org.apache.myfaces.trinidad.render.CoreRenderer.encodeChild(CoreRenderer.java:410)
at org.apache.myfaces.trinidad.render.CoreRenderer.encodeAllChildren(CoreRenderer.java:432)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.PanelPartialRootRenderer.renderContent(PanelPartialRootRenderer.java:69)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.BodyRenderer.renderContent(BodyRenderer.java:142)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.PanelPartialRootRenderer.encodeAll(PanelPartialRootRenderer.java:151)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.BodyRenderer.encodeAll(BodyRenderer.java:78)
at org.apache.myfaces.trinidad.render.CoreRenderer.delegateRenderer(CoreRenderer.java:446)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.DocumentRenderer.encodeAll(DocumentRenderer.java:80)
at org.apache.myfaces.trinidad.render.CoreRenderer.encodeEnd(CoreRenderer.java:335)
at org.apache.myfaces.trinidad.component.UIXComponentBase.encodeEnd(UIXComponentBase.java:751)
at org.apache.myfaces.trinidad.component.UIXComponentBase.__encodeRecursive(UIXComponentBase.java:1494)
at org.apache.myfaces.trinidad.component.UIXComponentBase.encodeAll(UIXComponentBase.java:771)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:257)
at org.apache.myfaces.application.jsp.JspViewHandlerImpl.actuallyRenderView(JspViewHandlerImpl.java:427)
at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:383)
at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:48)
at org.apache.myfaces.trinidadinternal.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:188)
at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:140)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:155)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:630)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
at org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:696)
at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:667)
at org.apache.jsp.index_jsp._jspService(index_jsp.java:64)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.discovery.tools.DiscoverSingleton
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)

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comme l'exception l'indique, il te faut les classes de commons-discovery.jar.

Ah oui :oops:. Merci de ton aide!

Une question toute bête :
Il me manquait cette jar dans /WEBINF/lib mais elle était dans mon src/Librairie.
Je me rends compte que je n'ai pas bien compris la différence entre ces 2 emplacements contenant des jar?

pour une webapp J2EE, l'emplacement des jars, c'est toujours dans WEB-INF/lib

l'autre dossier, il doit être généré par ton IDE, ou juste un lien vers WEB-INF/lib.

OK, merci encore de ton aide.