Could not instantiate seam components
1womps1 Aug 25, 2008 10:34 PMHi every body ,i'm trying to merge a table from database to a datatable,i actually made it but i don't know where i touched and it doesn't work anymore,could please help me
here is following stack trace
org.jboss.seam.InstantiationException: Could not instantiate Seam component: userssearch at org.jboss.seam.Component.newInstance(Component.java:1986) at org.jboss.seam.Component.getInstance(Component.java:1876) at org.jboss.seam.Component.getInstan ce(Component.java:1843) 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.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.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getValue(HtmlBasicInputRenderer.java:189) at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.getCurrentValue(HtmlBasicRenderer.java:320) at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeEnd(HtmlBasicRenderer.java:200) at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:836) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:896) at javax.faces.render.Renderer.encodeChildren(Renderer.java:137) at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812) at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:282) at org.ajax4jsf.renderkit.RendererBase.renderChildren(RendererBase.java:262) at org.richfaces.renderkit.html.PanelRenderer.doEncodeChildren(PanelRenderer.java:199) at org.richfaces.renderkit.html.PanelRenderer.doEncodeChildren(PanelRenderer.java:194) at org.ajax4jsf.renderkit.RendererBase.encodeChildren(RendererBase.java:121) at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:886) at javax.faces.render.Renderer.encodeChildren(Renderer.java:137) at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:886) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:892) at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592) at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108) at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:216) 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$FilterChainImpl.doFilter(SeamFilter.java:83) at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:85) at org.jboss.seam.servlet.SeamFilter$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.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141) at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281) at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60) 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.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446) at java.lang.Thread.run(Unknown Source) Caused by: javax.naming.NameNotFoundException: UtilisateursAction not bound at org.jnp.server.NamingServer.getBinding(NamingServer.java:529) at org.jnp.server.NamingServer.getBinding(NamingServer.java:537) at org.jnp.server.NamingServer.getObject(NamingServer.java:543) at org.jnp.server.NamingServer.lookup(NamingServer.java:267) at org.jnp.server.NamingServer.lookup(NamingServer.java:270) at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:667) at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:627) at javax.naming.InitialContext.lookup(Unknown Source) at org.jboss.seam.Component.instantiateSessionBean(Component.java:1290) at org.jboss.seam.Component.instantiate(Component.java:1276) at org.jboss.seam.Component.newInstance(Component.java:1970) ... 75 more
this is my employee.xhtml
<!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <ui:composition xmlns="http://www.w3.org/1999/xhtml" xmlns:s="http://jboss.com/products/seam/taglib" xmlns:ui="http://java.sun.com/jsf/facelets" xmlns:a="http://richfaces.org/a4j" xmlns:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html" xmlns:rich="http://richfaces.org/rich" template="layout/template.xhtml"> <ui:define name="body"> <div class="menu"><h:form> <h:commandButton value="Demandes" ></h:commandButton> <h:commandButton value="Envoyer requete" ></h:commandButton> <h:commandButton value="Utilisateurs"></h:commandButton> </h:form></div> <h:messages styleClass="message" /> <h:form id="admin"> <rich:panel> <f:facet name="header">Administration</f:facet> <div class="section"> <h1>Chercher un utilisateur</h1> <h:form id="searchCriteria"> <fieldset> <h:inputText id="searchString" value="#{userssearch.searchString}" style="width: 165px;"> <a:support id="onkeyup" event="onkeyup" actionListener="#{userssearch.find}" reRender="searchResults" /> </h:inputText>   <a:commandButton id="findUsers" value="Chercher utilisateur" action="#{userssearch.find}" reRender="searchResults"/>   <a:status id="status"> <f:facet id="StartStatus" name="start"> <h:graphicImage id="SpinnerGif" value="/img/spinner.gif"/> </f:facet> </a:status> <br/> <h:outputLabel id="MaximumResultsLabel" for="pageSize">Maximum results:</h:outputLabel>  <h:selectOneMenu id="pageSize" value="#{userssearch.pageSize}"> <f:selectItem id="PageSize5" itemLabel="5" itemValue="5"/> <f:selectItem id="PageSize10" itemLabel="10" itemValue="10"/> <f:selectItem id="PageSize20" itemLabel="20" itemValue="20"/> </h:selectOneMenu> </fieldset> </h:form> </div> <a:outputPanel id="searchResults"> <div class="section"> <h:outputText id="NousersFoundMessage" value="Aucun utilisateur trouve" rendered="#{users != null and users.rowCount==0}"/> <h:dataTable id="users" value="#{users}" var="hot" rendered="#{users.rowCount>0}"> <h:column id="column1"> <f:facet id="NameFacet" name="header" >Username</f:facet> #{hot.username} </h:column> <h:column id="column2"> <f:facet id="AddressFacet" name="header" >name</f:facet> #{hot.name} </h:column> <h:column id="column3"> <f:facet id="passwordFacet" name="header" >Password</f:facet> #{hot.password} </h:column> <h:column id="column4"> <f:facet id="mailFacet" name="header" >Mail</f:facet> #{hot.mail} </h:column> </h:dataTable> <s:link id="MoreResultsLink" value="More results" action="#{userssearch.nextPage}" rendered="#{usersearch.nextPageAvailable}"/> </div> </a:outputPanel> </rich:panel> </h:form> </ui:define> </ui:composition>
UtilisateursAction.java
// package com.bean.workflow; import java.util.List; import javax.ejb.Remove; import javax.ejb.Stateful; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext; import org.jboss.seam.ScopeType; import org.jboss.seam.annotations.Factory; import org.jboss.seam.annotations.Name; import org.jboss.seam.annotations.Scope; import org.jboss.seam.annotations.datamodel.DataModel; import org.jboss.seam.annotations.security.Restrict; @Stateful @Name("userssearch") @Scope(ScopeType.SESSION) @Restrict("#{identity.loggedIn}") public class UtilisateursAction implements Utilisateurs { @PersistenceContext private EntityManager em; private String searchString; private int pageSize = 10; private int page; private boolean nextPageAvailable = false; @DataModel private List<User> users; public void find() { page = 0; queryUsers(); } public void nextPage() { page++; queryUsers(); } private void queryUsers() { List<User> results = em.createQuery("select u from User u where lower(a.name) like #{pattern} or lower(a.username) like #{pattern} or lower(a.mail) like #{pattern}") .setMaxResults(pageSize+1) .setFirstResult( page * pageSize ) .getResultList(); nextPageAvailable = results.size() > pageSize; if (nextPageAvailable) { users = results.subList(0,pageSize); } else { users = results; } } public boolean isNextPageAvailable() { return nextPageAvailable; } public int getPageSize() { return pageSize; } public void setPageSize(int pageSize) { this.pageSize = pageSize; } @Factory(value="pattern", scope=ScopeType.EVENT) public String getSearchPattern() { return searchString==null ? "%" : '%' + searchString.toLowerCase().replace('*', '%') + '%'; } public String getSearchString() { return searchString; } public void setSearchString(String searchString) { this.searchString = searchString; } @Remove public void destroy() {} }
thanks for your help