Benigno Sales

Hello ??? Someone help me!

Hi,

I´m having problems when i try to create a dynamic menu, getting the params from the data base.

Menu.xhtml

<a4j:outputPanel ajaxRendered="true" id="mainOutPutPanel"> <a4j:form> <rich:toolBar binding="#{indexBackingBean.menu}" itemSeparator="true"> <rich:menuItem action="#{indexBackingBean.setIndex}" value="Home"/> </rich:toolBar> <a4j:include id="principal" viewId="#{indexBackingBean.viewId}" /> </a4j:form> </a4j:outputPanel>

IndexBackingBean.java

public class IndexBackingBean { private String viewId = "principal.xhtml"; private HtmlToolBar menu = new HtmlToolBar(); public IndexBackingBean() throws SQLException { } public HtmlToolBar getMenu() { return menu; } public void setMenu(HtmlToolBar menu) { this.menu = menu; } public String getViewId() { return viewId; } public void setViewId(String paginaAtual) { this.viewId = paginaAtual; } public void setIndex() { this.viewId = "principal.xhtml"; } public void setCrudUsuario() { this.viewId = "crudUsuario.xhtml"; System.out.println("[ Changing page to crudUsuario.xhtml ]"); } public void carregaMenu() throws SQLException { List<Menu> menus = new ArrayList<Menu>(); List<HtmlDropDownMenu> htmlDropDownMenus = new ArrayList<HtmlDropDownMenu>(); Usuario u = (Usuario) Utilitario.getHttpSessionObject("usuario"); PermissaoDAO permissaoDAO = new PermissaoDAO(); List<Permissao> permissoes = permissaoDAO.buscaPermissoesPorPerfil(u.getPerfil()); System.out.println("[ Starting load menu ]"); for (Permissao permissao : permissoes) { Menu m = permissao.getMenu(); if (!menus.contains(m)) { menus.add(m); } } for (Menu m : menus) { List<HtmlMenuItem> htmlMenuItems = new ArrayList<HtmlMenuItem>(); FacesContext facesContext = FacesContext.getCurrentInstance(); for (ItemMenu itemMenu : m.getItensMenu()) { HtmlMenuItem htmlMenuItem = new HtmlMenuItem(); ELContext el = facesContext.getELContext(); Application app = facesContext.getApplication(); ExpressionFactory ef = app.getExpressionFactory(); MethodExpression methodExpression = ef.createMethodExpression(el, itemMenu.getViewId(), String.class, new Class[]{}); htmlMenuItem.setActionExpression(methodExpression); htmlMenuItem.setValue(itemMenu); htmlMenuItem.setSubmitMode("ajax"); htmlMenuItems.add(htmlMenuItem); } HtmlDropDownMenu htmlDropDownMenu = new HtmlDropDownMenu(); htmlDropDownMenu.setValue(m); htmlDropDownMenu.getChildren().addAll(htmlMenuItems); htmlDropDownMenus.add(htmlDropDownMenu); } menu.getChildren().addAll(htmlDropDownMenus); System.out.println("[ Menu loaded. ]"); }

The menu is loades, but when i click on a link of the menu, returns the follow error:

type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception javax.servlet.ServletException: Argument Error: Parameter text is null javax.faces.webapp.FacesServlet.service(FacesServlet.java:256) org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:206) org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290) org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:388) org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515) org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:390) root cause SEVERE: Servlet.service() for servlet Faces Servlet threw exception java.lang.NullPointerException: Argument Error: Parameter text is null at com.sun.faces.renderkit.html_basic.HtmlResponseWriter.writeText(HtmlResponseWriter.java:694) at org.richfaces.renderkit.html.DropDownMenuRenderer.doEncodeBegin(DropDownMenuRenderer.java:191) at org.richfaces.renderkit.html.DropDownMenuRenderer.doEncodeBegin(DropDownMenuRenderer.java:128) at org.ajax4jsf.renderkit.RendererBase.encodeBegin(RendererBase.java:100) at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:788) at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:275) at org.richfaces.renderkit.html.ToolBarRendererBase.encodeChildren(ToolBarRendererBase.java:103) at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812) at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:277) at org.ajax4jsf.renderkit.RendererBase.renderChildren(RendererBase.java:258) at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:279) at org.ajax4jsf.renderkit.RendererBase.renderChildren(RendererBase.java:258) at org.richfaces.renderkit.html.PanelRenderer.doEncodeChildren(PanelRenderer.java:200) at org.richfaces.renderkit.html.PanelRenderer.doEncodeChildren(PanelRenderer.java:195) at org.ajax4jsf.renderkit.RendererBase.encodeChildren(RendererBase.java:120) at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812) at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:277) at org.ajax4jsf.renderkit.RendererBase.renderChildren(RendererBase.java:258) at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:279) at org.ajax4jsf.renderkit.RendererBase.renderChildren(RendererBase.java:258) at org.ajax4jsf.renderkit.html.AjaxOutputPanelRenderer.encodeChildren(AjaxOutputPanelRenderer.java:78) 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:100) at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:176) 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.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:206) at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290) at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:388) at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:390) 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: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:293) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454) at java.lang.Thread.run(Thread.java:619) 21/06/2010 12:29:41 com.sun.faces.lifecycle.LifecycleImpl phase WARNING: executePhase(RENDER_RESPONSE 6,com.sun.faces.context.FacesContextImpl@1372bdb) threw exception javax.faces.FacesException: java.lang.NullPointerException: Argument Error: Parameter text is null at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:675) at javax.faces.component.UIComponentBase.invokeOnComponent(UIComponentBase.java:650) at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:681) at javax.faces.component.UIComponentBase.invokeOnComponent(UIComponentBase.java:650) at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:681) at javax.faces.component.UIComponentBase.invokeOnComponent(UIComponentBase.java:650) at org.ajax4jsf.component.AjaxViewRoot.encodeChildren(AjaxViewRoot.java:551) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:886) at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592) at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:100) at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:176) 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.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:206) at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290) at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:388) at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:390) 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: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:293) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454) at java.lang.Thread.run(Thread.java:619)

Please HELP MEU, and sorry for the bad english!