Use Of @@PostConstruct JSF

Hi All
Can Any body explain be what is the use of @PostConstruct in JSF .
How we can implement it.
If any example ....it's better to understand ...
With thanks

You may find those articles useful:
http://weblogs.java.net/blog/edburns/archive/2005/08/using_ejb_annot.html
http://blogs.sun.com/rlubke/entry/jsf_ri_1_2_and

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Hi guys
I am trying to connect Pojos with jsf. I 've found that the problem is in the ejbs.
I am using eclipse 3.1.1, jboss-4.0.4RC1 and myfaces.
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0:20:29,981 ERROR [[jsp]] Servlet.service() for servlet jsp threw exception
javax.faces.el.EvaluationException: Cannot get value for expression '#{PropiedadesBean.allProperties}'
     at org.apache.myfaces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:397)
     at javax.faces.component.UIData.getValue(UIData.java:779)
     at javax.faces.component.UIData.createDataModel(UIData.java:545)
     at javax.faces.component.UIData.getDataModel(UIData.java:534)
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     at org.apache.myfaces.renderkit.html.HtmlTableRendererBase.encodeChildren(HtmlTableRendererBase.java:94)
     at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:319)
     at javax.faces.webapp.UIComponentTag.encodeChildren(UIComponentTag.java:343)
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     at org.apache.myfaces.taglib.UIComponentBodyTagBase.doEndTag(UIComponentBodyTagBase.java:55)
     at org.apache.jsp.paginas.propiedades_jsp._jspx_meth_h_dataTable_0(org.apache.jsp.paginas.propiedades_jsp:196)
     at org.apache.jsp.paginas.propiedades_jsp._jspx_meth_h_form_0(org.apache.jsp.paginas.propiedades_jsp:145)
     at org.apache.jsp.paginas.propiedades_jsp._jspx_meth_f_view_0(org.apache.jsp.paginas.propiedades_jsp:113)
     at org.apache.jsp.paginas.propiedades_jsp._jspService(org.apache.jsp.paginas.propiedades_jsp:78)
     at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
     at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
     at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
     at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
     at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
     at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
     at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
     at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:415)
     at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
     at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:352)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:107)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
     at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
     at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
     at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
     at org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:693)
     at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:660)
     at org.apache.jsp.index_jsp._jspService(org.apache.jsp.index_jsp:49)
     at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
     at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
     at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
     at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
     at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
     at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
     at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
     at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:415)
     at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
     at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:352)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:107)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.apache.myfaces.component.html.util.ExtensionsFilter.doFilter(ExtensionsFilter.java:122)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
     at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:54)
     at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:174)
     at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:868)
     at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:663)
     at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
     at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
     at java.lang.Thread.run(Unknown Source)
Caused by: javax.faces.el.EvaluationException: org.jboss.jose.db.PropiedadesBean
     at org.apache.myfaces.el.PropertyResolverImpl.getValue(PropertyResolverImpl.java:78)
     at org.apache.myfaces.el.ELParserHelper$MyPropertySuffix.evaluate(ELParserHelper.java:532)
     at org.apache.commons.el.ComplexValue.evaluate(ComplexValue.java:145)
     at org.apache.myfaces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:378)
     ... 77 more
Caused by: javax.faces.el.EvaluationException: Bean: org.jboss.jose.db.PropiedadesBean, property: allProperties
     at org.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolverImpl.java:404)
     at org.apache.myfaces.el.PropertyResolverImpl.getValue(PropertyResolverImpl.java:71)
     ... 80 more
Caused by: java.lang.reflect.InvocationTargetException
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
     at org.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolverImpl.java:400)
     ... 81 more
Caused by: java.lang.NullPointerException
     at org.jboss.jose.db.PropiedadesBean.getAllProperties(PropiedadesBean.java:71)
     ... 86 more
10:20:30,001 ERROR [[Faces Servlet]] Servlet.service() for servlet Faces Servlet threw exception
javax.faces.FacesException: Cannot get value for expression '#{PropiedadesBean.allProperties}'
     at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:421)
     at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
     at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:352)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:107)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
     at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
     at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
     at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
     at org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:693)
     at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:660)
     at org.apache.jsp.index_jsp._jspService(org.apache.jsp.index_jsp:49)
     at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
     at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
     at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
     at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
     at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
     at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
     at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
     at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:415)
     at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
     at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:352)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:107)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.apache.myfaces.component.html.util.ExtensionsFilter.doFilter(ExtensionsFilter.java:122)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
     at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:54)
     at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:174)
     at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:868)
     at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:663)
     at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
     at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
     at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.jasper.JasperException: Cannot get value for expression '#{PropiedadesBean.allProperties}'
     at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:370)
     at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
     at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
     at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
     at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
     at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
     at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:415)
     ... 50 more
10:20:30,022 ERROR [[jsp]] Servlet.service() for servlet jsp threw exception
javax.faces.FacesException: Cannot get value for expression '#{PropiedadesBean.allProperties}'
     at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:421)
     at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
     at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:352)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:107)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
     at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
     at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
     at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
     at org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:693)
     at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:660)
     at org.apache.jsp.index_jsp._jspService(org.apache.jsp.index_jsp:49)
     at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
     at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
     at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
     at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
     at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
     at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
     at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
     at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:415)
     at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
     at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:352)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:107)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.apache.myfaces.component.html.util.ExtensionsFilter.doFilter(ExtensionsFilter.java:122)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
     at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:54)
     at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:174)
     at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:868)
     at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:663)
     at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
     at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
     at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.jasper.JasperException: Cannot get value for expression '#{PropiedadesBean.allProperties}'
     at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:370)
     at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
     at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
     at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
     at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
     at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
     at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:415)
     ... 50 more
10:20:30,032 ERROR [[Faces Servlet]] Servlet.service() for servlet Faces Servlet threw exception
javax.faces.FacesException: Cannot get value for expression '#{PropiedadesBean.allProperties}'
     at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:421)
     at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
     at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:352)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:107)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.apache.myfaces.component.html.util.ExtensionsFilter.doFilter(ExtensionsFilter.java:122)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
     at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:54)
     at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:174)
     at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:868)
     at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:663)
     at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
     at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
     at java.lang.Thread.run(Unknown Source)
Caused by: javax.servlet.ServletException: Cannot get value for expression '#{PropiedadesBean.allProperties}'
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:121)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
     at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
     at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
     at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
     at org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:693)
     at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:660)
     at org.apache.jsp.index_jsp._jspService(org.apache.jsp.index_jsp:49)
     at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
     at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
     at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
     at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
     at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
     at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
     at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
     at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:415)
     ... 25 moreMy jsf is that
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>propiedad</title>
</head>
<body>
<f:view>
     <h:form id ="Properties">
          <h:dataTable id ="Propiedades" value="#{PropiedadesBean.allProperties}" var="prop" border="1">
               <h:column>
                    <f:facet name="header">
                         <h:outputText value="Referencia"></h:outputText>
                    </f:facet>
                    <h:outputText value="#{prop.referencia}"></h:outputText>
               </h:column>
               <h:column>
                    <f:facet name="header">
                         <h:outputText value="Habitaciones"></h:outputText>
                    </f:facet>
                    <h:outputText value="#{prop.nHabitaciones}"></h:outputText>
               </h:column>
          </h:dataTable>
     </h:form>
</f:view>
</body>
</html>My bean is that
import java.io.Serializable;
import java.util.List;
import java.util.ArrayList;
import javax.ejb.Local;
import javax.ejb.Remote;
import javax.ejb.Stateless;
import javax.faces.context.FacesContext;
import javax.faces.el.ValueBinding;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;
@Stateless (name="propiedadesLocal")
public class PropiedadesBean implements LocalPropiedades, Serializable {
     @PersistenceContext (unitName="test")
     private EntityManager em;
     public List <Propiedad> getAllProperties() {
          ArrayList<Propiedad> propiedades = new ArrayList<Propiedad>();
          ValueBinding beanValueBinding = facesContext.getApplication().createValueBinding("#{propiedadesBean.allProperties}");*/
          Query q = em.createQuery("From propiedades");
          for (Object o: q.getResultList()) {
               propiedades.add((Propiedad) o);
          return propiedades;
}this statement doesn't work
Query q = em.createQuery("From propiedades");
When I put a checkpoint. I see the em variable is null.
Here I've got only a function returns a ArrayList. This class implements the business logic.
My another class implements the pesistence is that.
package org.jboss.jose.db;
import javax.persistence.*;
import java.util.*;
import java.io.Serializable;
import javax.persistence.*;
import javax.persistence.Id;
@Entity
@Table(name="propiedades")
public class Propiedad implements Serializable{
     private int referencia;
     private double precio1;
     private String referenciaCliente;
     private int nHabitaciones;
     private int cuartosDeBa�o;
     private Empleado empleado;
     //static final long serialVersionUID = 1L;;
     public Propiedad(){};
     public int getCuartosDeBa�o() {
          return cuartosDeBa�o;
     public void setCuartosDeBa�o(int cuartosDeBa�o) {
          this.cuartosDeBa�o = cuartosDeBa�o;
     public int getNHabitaciones() {
          return nHabitaciones;
     public void setNHabitaciones(int habitaciones) {
          nHabitaciones = habitaciones;
     public double getPrecio1() {
          return precio1;
     public void setPrecio1(double precio1) {
          this.precio1 = precio1;
     @Id //(generate = GeneratorType.AUTO)
     @GeneratedValue
     @Column (name = "Referencia")
     public int getReferencia() {
          return referencia;
     public void setReferencia(int referencia) {
          this.referencia = referencia;
     public String getReferenciaCliente() {
          return referenciaCliente;
     public void setReferenciaCliente(String referenciaCliente) {
          this.referenciaCliente = referenciaCliente;
     //@JoinColumn (name = "idEmpleado")
     @ManyToOne
     public Empleado getEmpleado() {
          return empleado;
     public void setEmpleado(Empleado empleado) {
          this.empleado = empleado;
The servlet that works
package org.jboss.jose.web;
import javax.servlet.http.HttpServlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
//import java.io.IOException;
import org.jboss.jose.db.*;
//import org.jboss.ejb.PropiedadesBean;
public class PropiedadServlet extends HttpServlet {
     private LocalPropiedades propiedadesBean;
     private EmpleadosBean empleadosBean;
     protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
          this.mostrarPropiedades(req, resp);
     public void init() throws ServletException {
          try {
               Context context = new InitialContext();
               this.propiedadesBean = (LocalPropiedades) context.lookup("inmovil/propiedadesLocal/local");
               this.propiedadesBean.addEmpleadoPropiedad("jose",1,"1",1000.00,"1000",1,1);
          } catch (NamingException e) {
               // TODO Auto-generated catch block
               System.out.println(e.getMessage());
//               e.printStackTrace();
     private void mostrarPropiedades(HttpServletRequest req, HttpServletResponse resp) throws ServletException ,IOException {
          PrintWriter out = resp.getWriter();
          for (Propiedad prop: this.propiedadesBean.getAllProperties()) {
               out.p

I think that I don't load. But I don't know where I write the below line.Than it's clear that you'll get a NullPointerException.
But I don't know where I write the below line.
Context context = new InitialContext();
this.propiedadesBean = (LocalPropiedades)
context.lookup("inmovil/propiedadesLocal/local");Whenever you need it. For example within an ActionHandler which loads the bean
and makes a DTO Object (Bean used by the JSF Page) available for the JSF Page.
But where you actually have to load the Bean depends on your design.
andi

How Can I use EL in JSF

Dear All
I want to add If condition in JSF page .
How can I use EL at JSF page
I want ot Add If condition .
With Thanks and Regards
Gunjan Bohra

Actually By Problem Is Regarding DataTable Binding Method
<f:subview id="vesselist" rendered="#{vesselBaseVO.dfsVO.dfsData.dfsResultBeanListSize>0}" >
      <t:dataTable value="#{vesselBaseVO.dfsVO.dfsData.dfsResultBeanList}"
                          sortable="false"
                          var="result"
                          id="dfsTable"
                           forceId="true"
                          rowClasses="AlternateRow1, AlternateRow2"
                          columnClasses="TableColumnText, TableColumnText, TableColumnText, TableColumnText, TableColumnText, TableColumnText, TableColumnText, TableColumnNumber, TableColumnNumber, TableColumnText"
                          headerClass="TableHeader"
                          frame="box"
                          width="100%"
                          preserveDataModel="false"
                          rows="10" binding="#{vesselBackingBean.searchResultDataTable}" rendered="true">
         </t:dataTable>
</f:subview>Although I had block it with renderer attribute ,
DataTable would not show if resultList size is 0 but
DATA Table binding method is still called even dataTable is not rendered on page I want to block that binding method calling ...
How can I do that !!!!

Using expressions in jsf tags

I have a problem with using expressions in jsf tags! I know this
topic was discussed before but it doesn`t work.
I want to use the following jsf-code:
<h:panel_data id="tab" var="vari" modelReference="Bean.varis">
<h:output_text id="Id" modelReference="vari.id"/>
<h:command_hyperlink id="hyper" href="next.jsp" label="Detail">
<f:parameter id="Param1" name="id" value="vari.id"/>
</h:command_hyperlink>
</h:panel_data>
The value of the parameter should have the value of vari.id!! Why doesn`t it work?? I also tried to use value="${vari.id}" and value=<%= vari.id %>.
I have also changed the jsf_core.tld from
     <rtexprvalue>false</rtexprvalue>
to
     <rtexprvalue>true</rtexprvalue>
Does anybody know what to do? Where should the .tld-files be localized when i deploy the webapplication??

On May 19th, 2003 HydraD == "HD" wrote:
HD> I have a problem with using expressions in jsf tags! I
HD> know this
HD> topic was discussed before but it doesn`t work.
HD>
HD> I want to use the following jsf-code:
HD>
HD> <h:panel_data id="tab" var="vari" modelReference="Bean.varis">
HD> <h:output_text id="Id" modelReference="vari.id"/>
HD> ...
HD> <h:command_hyperlink id="hyper" href="next.jsp" label="Detail">
HD> <f:parameter id="Param1" name="id" value="vari.id"/>
HD> </h:command_hyperlink>
HD> </h:panel_data>
HD>
HD> The value of the parameter should have the value of
HD> vari.id!! Why doesn`t it work?? I also tried to use
HD> value="${vari.id}" and value=<%= vari.id %>.
HD>
HD> I have also changed the jsf_core.tld from
HD>      <rtexprvalue>false</rtexprvalue>
HD> to
HD>      <rtexprvalue>true</rtexprvalue>
HD>
HD> Does anybody know what to do? Where should the
HD> .tld-files be localized when i deploy the
HD> webapplication??
If you want your parameter's value to be pulled from the model, you must
use modelReference instead of value. Try that and see if it works.
Ed

Using Frames in JSF

Can anyone provide an example on how to use frames inside JSF? I don't know how to define the framesets inside the jsf file. A simple example will go a long way. Thanks.

Nope, I'm not big on samples, especially of code I've never tried to write. Give it a try, if you have a problem post your code and we'll take a look.

Using EL in JSF

Hello,
maybe a stupid question but I asked myself why I can't use the $ symbol when using EL in JSF. Can somebody tell me the difference between using # or $ when writing EL in JSP/JSF
Thx
Chris

Yes, it very depends.
JSF 1.1 and JSP2.0 have their own EL. They do not understand each other.
#{} uses only for jsf tag attributes. You cannot able to use it outside (Except with Facelets, but it is not about JSP at all).
In contrast, ${} cannot be used inside the JSF tag attributes.
JSF1.2 and JSP2.1 use unified EL. Now, you can use them both everywhere on the page, but the major difference still exists.
${} is a immediate EL
#{} is a deferral EL
#{} orginizes binding instead of immediate replacement. You can use #{} as an L-Value expression.
For more information read this article:
http://today.java.net/pub/a/today/2006/03/07/unified-jsp-jsf-expression-language.html

Methodaology to use a commom JSF/JSP page for both PDA and PC Browser

hello,
I am planing to write an application that should work on both PDA(Windows CE 4.2 Client) and PC(Desktop).I choosed JSF as it supports Rendering.Is there any methodology so that i can use a common JSF/JSP for both the client.
As the PDA browser space constrint i can not use the same page for both.
One way as i know is Conditional Component display whre there are ceparate components for PDA & PC ..But i need a methadology where in i can use same component for both PDA & PC .
I came to know about the XML rendering capability of JSF can this be used?..
can anybody please hep me in this regard.
thanks & regards
ullas kumar

Firefox Mobile sends "Android" in its browser identification. If the site is checking for that, then you should get a mobile page. If the site requires more, e.g., Chrome, Webkit, or some other text, then that's a problem because Firefox doesn't use those terms. With server-based redirection, you cannot see what the site is checking for.
For testing, or to work around sites not knowing about Firefox Mobile, you could try the Phony extension: https://addons.mozilla.org/en-us/mobile/addon/phony/

How to use HtmlDataTable in JSF

Hi,
I am going to use HtmlDataTable in a bean. The scenario like this: User submit a symbol (a String) then get stock history information corresponding to this symbol. I put the stock history information in an Arraylist, every element of this Arraylist is a java bean, which contains historical information for this stock according to the time.
The java bean:
public class StockHistory {
     private String symbol;
     private String date;
     private long dayVolume;
     private double openPrice;
     private double closePrice;
     private double dayHighPrice;
     private double dayLowPrice;
     public String getSymbol()
          return symbol;
     public void setSymbol(String Symbol)
          this.symbol = Symbol;
     public String getDate()
          return date;
     public void setDate(String date)
          this.date = date;
     public long getDayVolume()
          return dayVolume;
     public void setDayVolume(long dayVolume)
          this.dayVolume = dayVolume;
     public double getOpenPrice()
          return openPrice;
     public void setOpenPrice(double openPrice)
          this.openPrice = openPrice;
     public double getClosePrice()
          return closePrice;
     public void setClosePrice(double closePrice)
          this.closePrice = closePrice;
     public double getDayHighPrice()
          return dayHighPrice;
     public void setDayHighPrice(double dayHighPrice)
          this.dayHighPrice = dayHighPrice;
     public double getDayLowPrice()
          return dayLowPrice;
     public void setDayLowPrice(double dayLowPrice)
          this.dayLowPrice = dayLowPrice;
}The Arraylist:
ArrayList data = new ArrayList( 100 );
Collection threadSafeList = Collections.synchronizedCollection( data );
StockHistory stock = new StockHistory();
stock.setSymbol("IBM");
stock.setDate("01/01/2000");
stock.setDayVolume(100000);
stock.setOpenPrice(76.08);
stock.setClosePrice(78.08);
stock.setDayLowPrice(75.05);
stock.setDayHighPrice(79.93);
data.add(stock);
stock.setSymbol("IBM");
stock.setDate("01/01/2002");
stock.setDayVolume(100300);
stock.setOpenPrice(86.08);
stock.setClosePrice(88.08);
stock.setDayLowPrice(85.05);
stock.setDayHighPrice(89.93);
data.add(stock););
I set HTMLDataTable lke:
// DataTable
historyDataTable = new HtmlDataTable();
// Column1
UIColumn columnComponent = new UIColumn();
List childrenList = historyDataTable.getChildren();
childrenList.add(columnComponent);
// Header information 1
HtmlOutputText headerComponent = new HtmlOutputText();
headerComponent.setValue("symbol");
columnComponent.setHeader(headerComponent);
// Column 2
columnComponent = new UIColumn();
childrenList.add(columnComponent);
// Header information 2
headerComponent = new HtmlOutputText();
headerComponent.setValue("date");
columnComponent.setHeader(headerComponent);
// Column3
columnComponent = new UIColumn();
childrenList.add(columnComponent);
// Header information 3
headerComponent = new HtmlOutputText();
headerComponent.setValue("dayVolume");
columnComponent.setHeader(headerComponent);
// Column 4
columnComponent = new UIColumn();
childrenList.add(columnComponent);
// Header information 4
headerComponent = new HtmlOutputText();
headerComponent.setValue("openPrice");
columnComponent.setHeader(headerComponent);
// Column5
columnComponent = new UIColumn();
childrenList.add(columnComponent);
// Header information 5
headerComponent = new HtmlOutputText();
headerComponent.setValue("closePrice");
columnComponent.setHeader(headerComponent);
// Column 6
columnComponent = new UIColumn();
childrenList.add(columnComponent);
// Header information 6
headerComponent = new HtmlOutputText();
headerComponent.setValue("dayHighPrice");
columnComponent.setHeader(headerComponent);
// Column 7
columnComponent = new UIColumn();
childrenList.add(columnComponent);
// Header information 7
headerComponent = new HtmlOutputText();
headerComponent.setValue("dayLowPrice");
columnComponent.setHeader(headerComponent);
//get data
ArrayList list=history(symbol);
list=(ArrayList) columnComponent.getChildren();
for(int i=1; i<=list.size(); i++)
     HtmlOutputText rowComponent = new HtmlOutputText();
     rowComponent.setValue("Row"+i);
     rowComponent.setId("Row"+i);
     list.add(rowComponent);
// DataModel
ListDataModel listDataModel = new ListDataModel();
listDataModel.setWrappedData(list);The JSP code to display this table
<h:dataTable id="Historytable" value="#{stockHistoryBean.historyDataTable}" var="varstockHistory" styleClass="dataTable" headerClass="headerClass" footerClass="footerClass" rowClasses="rowClass1" columnClasses="columnClass1" border="0" cellpadding="2" cellspacing="0" binding="#{stockHistoryBean.historyDataTable}">
<h:column id="column1" >
<f:facet name="header">
<h:outputText styleClass="outputText" value="DATE" id="col1text1"></h:outputText>
</f:facet>
<h:outputText id="col1text2" value="#{varstockHistory.symbol}" styleClass="outputText" >
<f:convertDateTime/>
</h:outputText>
</h:column>
               <h:column id="column2" >
                    <f:facet name="header">
                    <h:outputText styleClass="outputText" value="DATE" id="col2text1"></h:outputText>
                    </f:facet>
                    <h:outputText id="col2text2" value="#{varstockHistory.date}" styleClass="outputText" >
                    <f:convertDateTime/>
                    </h:outputText>
               </h:column>
               <h:column id="column3" >
                    <f:facet name="header">
                    <h:outputText styleClass="outputText" value="Dayvolume" id="col3text1"></h:outputText>
                    </f:facet>
                    <h:outputText id="col3text2" value="#{varstockHistory.dayVolume}" styleClass="outputText" >
                    <f:convertNumber/>
                    </h:outputText></h:column>
                    <h:column id="column4" >
                    <f:facet name="header">
                    <h:outputText styleClass="outputText" value="Openprice" id="col4text1"></h:outputText>
                    </f:facet>
                    <h:outputText id="col4text2" value="#{varstockHistory.openPrice}" styleClass="outputText" >
                    <f:convertNumber/>
                    </h:outputText>
               </h:column>
               <h:column id="column5" >
                    <f:facet name="header">
                    <h:outputText styleClass="outputText" value="Closeprice" id="col5text1"></h:outputText>
                    </f:facet>
                    <h:outputText id="col5text2" value="#{varstockHistory.closePrice}" styleClass="outputText" >
                    <f:convertNumber/>
                    </h:outputText>
               </h:column>
               <h:column id="column6" >
                    <f:facet name="header">
                    <h:outputText styleClass="outputText" value="Dayhighprice" id="col6text1"></h:outputText>
                    </f:facet>
                    <h:outputText id="col6text2" value="#{varstockHistory.dayHighPrice}" styleClass="outputText" >
                    <f:convertNumber/>
                    </h:outputText>
               </h:column>
               <h:column id="column7" >
                    <f:facet name="header">
                    <h:outputText styleClass="outputText" value="Daylowprice" id="col7text1"></h:outputText>
                    </f:facet>
                    <h:outputText id="col7text2" value="#{varstockHistory.dayLowPrice}" styleClass="outputText" >
                    <f:convertNumber/>
                    </h:outputText>
               </h:column>
     </h:dataTable>The problem is when I tried to run, there is this page is not display. But if I remove the HTMLDataTable part from both bean class and JSP, then it works correctly. So much be something wrong with using HTMLDataTable.
Really appreciate your help

You should write your own JSF component that generates html frame as you need or
download already written custom component that generates html frame.

Using IFRAME in JSF to display a PDF file

2 all,
How do i display a PDF file inside a JSF page in a IFRAME tag?
I store the PDF file location (like d:\images\pdf1.pdf) in my database. I cant give this location directly into the src attribute cos then the file will be rendered to only users who have access to that folder (the application is a internet application). IFRAME would be ideal as the display is very very neat (esp for pdf files).
To get this working i tried the examples given in balusc blogs (on image servlet) but the problem is that my servlet is not getting called. Find below the web.xml and imageDisplay.jsp pages that i tried
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>WorkFlowTool</display-name>
<context-param>
<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
<param-value>server</param-value>
</context-param>
<filter>
<filter-name>MyFacesExtensionsFilter</filter-name>
<filter-class>org.apache.myfaces.webapp.filter.ExtensionsFilter</filter-class>
<init-param>
   <param-name>maxFileSize</param-name>
   <param-value>20m</param-value>
</init-param>
</filter>
<filter>
<display-name>SecurityCheckFilter</display-name>
<filter-name>SecurityCheckFilter</filter-name>
<filter-class>filters.SecurityCheckFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>MyFacesExtensionsFilter</filter-name>
<url-pattern>/faces/*</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>MyFacesExtensionsFilter</filter-name>
<url-pattern>*.faces</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>MyFacesExtensionsFilter</filter-name>
<url-pattern>*.jsf</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>SecurityCheckFilter</filter-name>
<url-pattern>/faces/*</url-pattern>
</filter-mapping>
<listener>
<listener-class>com.sun.faces.config.ConfigureListener</listener-class>
</listener>
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet>
<servlet-name>Image Servlet</servlet-name>
<servlet-class>servlets.ImageServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Image Servlet</servlet-name>
<url-pattern>/imageServlet/*</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>/faces/*</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.faces</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.jsf</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>60</session-timeout>
</session-config>
<welcome-file-list>
<welcome-file>/jsp/index.jsp</welcome-file>
</welcome-file-list>
<error-page>
<error-code>500</error-code>
<location>/jsp/error.jsp</location>
</error-page>
<resource-ref>
<res-ref-name>jdbc/JDDS</res-ref-name>
<res-type>java.lang.Object</res-type>
<res-auth>Container</res-auth>
<res-sharing-scope>Shareable</res-sharing-scope>
</resource-ref>
</web-app>
imageDisplay.jsp
<HTML>
<HEAD>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%>
<%@ taglib uri='http://java.sun.com/jsp/jstl/core' prefix='c'%>
<f:loadBundle basename="messages" var="msg" />
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<LINK rel="stylesheet" type="text/css" href="../theme/Styles.css"
     title="Style">
</HEAD>
<body topmargin="0" leftmargin="0">
<f:view>
     <h:form id="CaseLookUp">
          <h:dataTable value="#{pc_ImageDisplay.dataModel}" var="var">
               <h:column id="one">
                    <f:facet name="header">
                         <h:outputText value="H1" id="HOne"/>
                    </f:facet>
                    <h:outputText value="#{var.caseID}" id="IDONE"/>
               </h:column>
               <h:column id="two">
                    <f:facet name="header">
                         <h:outputText value="H2" id="HTwo"/>
                    </f:facet>
                    <h:graphicImage value="imageServlet?file=#{var.PODocPath}" id="image"/>
               </h:column>
          </h:dataTable>
     </h:form>
</f:view>
</body>
</HTML>The image servlet is what i got from balusc's site (http://balusc.blogspot.com/2007/04/imageservlet.html).
I dont know why my servlet is not getting called. Can someone help me with this pls?
okay let me post the modified code for my image servlet here
public class ImageServlet extends HttpServlet {
     private static final long serialVersionUID = 1L;
     public void doGet(HttpServletRequest request, HttpServletResponse response) {
        // Define base path somehow. You can define it as init-param of the servlet.
//        String imageFilePath = "/images";
        // In a Windows environment with the Applicationserver running on the
        // c: volume, the above path is exactly the same as "c:\images".
        // In UNIX, it is just straightforward "/images".
        // If you have stored images in the WebContent of a WAR, for example in the
        // "/WEB-INF/images" folder, then you can retrieve the absolute path by:
        // String imageFilePath = getServletContext().getRealPath("/WEB-INF/images");
        // Get file name from request.
        String imageFileName = request.getParameter("file");
        System.out.println("Inside the image servlet ---->>>> " + imageFileName);
        // Check if file name is supplied to the request.
//        if (imageFileName != null) {
//            // Strip "../" and "..\" (avoid directory sniffing by hackers!).
//            imageFileName = imageFileName.replaceAll("\\.+(\\\\|/)", "");
//        } else {
//            // Do your thing if the file name is not supplied to the request.
//            // Throw an exception, or show default/warning image, or just ignore it.
//            return;
        // Prepare file object.
        File imageFile = new File(imageFileName);
        // Check if file actually exists in filesystem.
        if (!imageFile.exists()) {
            // Do your thing if the file appears to be non-existing.
            // Throw an exception, or show default/warning image, or just ignore it.
            return;
        // Get content type by filename.
        String contentType = URLConnection.guessContentTypeFromName(imageFileName);
        // Check if file is actually an image (avoid download of other files by hackers!).
        // For all content types, see: http://www.w3schools.com/media/media_mimeref.asp
        if (contentType == null || !contentType.startsWith("image")) {
            // Do your thing if the file appears not being a real image.
            // Throw an exception, or show default/warning image, or just ignore it.
            return;
        // Prepare streams.
        BufferedInputStream input = null;
        BufferedOutputStream output = null;
        try {
            // Open image file.
            input = new BufferedInputStream(new FileInputStream(imageFile));
            int contentLength = input.available();
            // Init servlet response.
            response.reset();
            response.setContentLength(contentLength);
            response.setContentType(contentType);
            response.setHeader(
                "Content-disposition", "inline; filename=\"" + imageFileName + "\"");
            output = new BufferedOutputStream(response.getOutputStream());
            // Write file contents to response.
            while (contentLength-- > 0) {
                output.write(input.read());
            // Finalize task.
            output.flush();
        } catch (IOException e) {
            // Something went wrong?
            e.printStackTrace();
        } finally {
            // Gently close streams.
            if (input != null) {
                try {
                    input.close();
                } catch (IOException e) {
                    e.printStackTrace();
                    // This is a serious error. Do more than just printing a trace.
            if (output != null) {
                try {
                    output.close();
                } catch (IOException e) {
                    e.printStackTrace();
                    // This is a serious error. Do more than just printing a trace.
    }

Thanks Balusc!!
I have made use of your code to display PDF files in an IFRAME tag too!!! I just dint believe that this would be possible. Please just take a look at my JSP page.
<h:form id="CaseLookUp">
     <%
     String path = request.getContextPath()+"";
     out.print(path);
     %>
<iframe scrolling="auto" src="<%=path%>/imageServlet?file=D:\70-229 V5.pdf" width="80%" height="600" ></iframe>
     </h:form>

Problem in using MySQL in JSF Pages

Hi,
I am facing a problem regarding use of MySQL in JSF.
I am using IBM RAD 6.0 for application developement.
Previously creating a normal java application which is used of retrieval of the data from the database was working fine. by including j/connector jar file in java build path.
But when same program is converted to web service and accessed through a JSF page using a managed bean it is not working. It throws classNotFoundException
Please reply at your earliest.
Thanks in advance.
Regards,
Amit
code :-
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class BeanClass
     public String display()
          Connection conn = null;
          Statement stmt = null;
          ResultSet rs = null;
          String returnDate = "";
          try
               Class.forName("com.mysql.jdbc.Driver").newInstance();
               System.out.println("Sucess");
               conn=DriverManager.getConnection("jdbc:mysql://localhost/switching","root","pspl");
               System.out.println("Sucess******");
               stmt = conn.createStatement();
               System.out.println("Sucess^^^^^^^^^");
               rs = stmt.executeQuery("SELECT * FROM log1 where senderId = '008' ");
               System.out.println("Sucess#########");
               while(rs.next())
                    System.out.println("Date : " + rs.getString("expDate"));
                    returnDate = rs.getString("expDate");
               System.out.println("Final success");
               System.out.println("Sucess@@@@@@@@@@@@@@@@");
          }catch(ClassNotFoundException cnfe)
               System.err.println("Drivers not found " + cnfe.toString());
               cnfe.printStackTrace();
          catch(IllegalAccessException iae)
               System.err.println("Access Exception");
          catch(InstantiationException ie)
               System.err.println("Instatiation Exception");
          catch(SQLException se)
               System.err.println("SQL EXCEPTION");
               se.printStackTrace();
          System.out.println("Date is = " + returnDate);
          return returnDate;
Errors are :-
[5/3/06 10:47:33:358 IST] 00000061 SystemErr R java.lang.ClassNotFoundException: com.mysql.jdbc.Driver     at com.ibm.ws.classloader.CompoundClassLoader.findClass(CompoundClassLoader.java(Compiled Code))
     at com.ibm.ws.classloader.CompoundClassLoader.loadClass(CompoundClassLoader.java(Compiled Code))
     at java.lang.ClassLoader.loadClass(ClassLoader.java(Compiled Code))
     at java.lang.Class.forName1(Native Method)
     at java.lang.Class.forName(Class.java(Compiled Code))
     at packBean.BeanClass.display(BeanClass.java:29)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java(Compiled Code))
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java(Compiled Code))
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java(Compiled Code))
     at java.lang.reflect.Method.invoke(Method.java(Compiled Code))
     at com.ibm.ws.webservices.engine.dispatchers.java.JavaDispatcher.invokeMethod(JavaDispatcher.java:178)
     at com.ibm.ws.webservices.engine.dispatchers.java.JavaDispatcher.invokeOperation(JavaDispatcher.java:141)
     at com.ibm.ws.webservices.engine.dispatchers.SoapRPCProcessor.processRequestResponse(SoapRPCProcessor.java:423)
     at com.ibm.ws.webservices.engine.dispatchers.SoapRPCProcessor.processMessage(SoapRPCProcessor.java:388)
     at com.ibm.ws.webservices.engine.dispatchers.BasicDispatcher.processMessage(BasicDispatcher.java:134)
     at com.ibm.ws.webservices.engine.dispatchers.java.SessionDispatcher.invoke(SessionDispatcher.java:203)
     at com.ibm.ws.webservices.engine.PivotHandlerWrapper.invoke(PivotHandlerWrapper.java:225)
     at com.ibm.ws.webservices.engine.handlers.jaxrpc.JAXRPCHandler.invoke(JAXRPCHandler.java:151)
     at com.ibm.ws.webservices.engine.handlers.WrappedHandler.invoke(WrappedHandler.java:64)
     at com.ibm.ws.webservices.engine.PivotHandlerWrapper.invoke(PivotHandlerWrapper.java:225)
     at com.ibm.ws.webservices.engine.PivotHandlerWrapper.invoke(PivotHandlerWrapper.java:225)
     at com.ibm.ws.webservices.engine.WebServicesEngine.invoke(WebServicesEngine.java:279)
     at com.ibm.ws.webservices.engine.transport.http.WebServicesServlet.doPost(WebServicesServlet.java:717)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
     at com.ibm.ws.webservices.engine.transport.http.WebServicesServletBase.service(WebServicesServletBase.java:341)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
     at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1282)
     at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:673)
     at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:80)
     at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:1802)
     at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:84)
     at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:469)
     at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:408)
     at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:286)
     at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminaters(NewConnectionInitialReadCallback.java:201)
     at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:103)
     at com.ibm.ws.tcp.channel.impl.WorkQueueManager.requestComplete(WorkQueueManager.java(Compiled Code))
     at com.ibm.ws.tcp.channel.impl.WorkQueueManager.attemptIO(WorkQueueManager.java(Compiled Code))
     at com.ibm.ws.tcp.channel.impl.WorkQueueManager.workerRun(WorkQueueManager.java(Compiled Code))
     at com.ibm.ws.tcp.channel.impl.WorkQueueManager$Worker.run(WorkQueueManager.java(Compiled Code))
     at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java(Compiled Code))

You have to put myfaces jar on the web-inf/lib

Javascript and html menu to be used with ADF/JSF using JDeveloper

I have a menu for a webpage that was originally built using html and javascript. I need to convert it to be used with JSF and ADF. In the html, the menu items used an unordered list inside of a div tag.
It looks something like this:

AND
the submenu(s) have links that look something like:

It is unclear to me how to work with my javascript menu to get the same look and feel with JSF or ADF as I did with html. Any insights would be great. Thanks.
Daniel
Message was edited by:
dannyc

Hello,
If you do not find any existing JSF component (in ADF Faces/Trinidad, or any other JSF library) you can for sure extend/create your own component with specific renderer that will be the HTML/Javscript that you want.
So here some interesting pointers about the subject:
- Buildin Custom JSF component (Chris Schalk)
- Build Custom JSF Components) (Jonas Jacobi
- Extending Default Render (and lot of other JavaEE blueprints)
These links will give you a starting point.
Regards
Tugdual Grall

Using workflow from jsf pages...

We have built a simple JSF page on OC4J app server..
We want to call our workflow program from this page.
How should I use the CREATE PROCESS() AND START PROCESS() inside the JSF page?
We are using 10.1.2. application server. And We SSO connection between
OC4J 10 1. 3.2
we deploy our java application to this OC4J..
But we when we call workflow functions we get get_remote_user error.
Can we call direct PL/SQL API over JDBC connection without using OWF Java API.
Or we need (must) use Java aPI to supply this.
Thanks...

We see that we can call CREATE PROCESS() OR START PROCESS() inside the JSF page..
But the problem are about notifications which needs authentication now
How can we use notifications from java...
Can we call direct PL/SQL API over JDBC connection without using OWF Java API.
Or we need (must) use Java aPI to supply this.
Thanks...

Use Of @@PostConstruct JSF

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