Can anybody please
tell what is this exception about?
Thanks,
Lieyong
java.lang.NullPointerException
at com.sun.faces.renderkit.html_basic.CommandLinkRenderer.getHiddenFieldName(CommandLinkRenderer.java:136)
at com.sun.faces.renderkit.html_basic.CommandLinkRenderer.encodeEnd(CommandLinkRenderer.java:320)
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:712)
at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:443)
at com.sun.faces.renderkit.html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:130)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:693)
at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:435)
at com.sun.faces.renderkit.html_basic.GridRenderer.encodeChildren(GridRenderer.java:233)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:693)
at org.apache.myfaces.renderkit.RendererUtils.renderChild(RendererUtils.java:444)
at org.apache.myfaces.renderkit.RendererUtils.renderChildren(RendererUtils.java:427)
at org.apache.myfaces.renderkit.RendererUtils.renderChild(RendererUtils.java:448)
at org.apache.myfaces.custom.layout.HtmlLayoutRenderer.renderTableCell(HtmlLayoutRenderer.java:259)
at org.apache.myfaces.custom.layout.HtmlLayoutRenderer.renderClassic(HtmlLayoutRenderer.java:101)
at org.apache.myfaces.custom.layout.HtmlLayoutRenderer.encodeEnd(HtmlLayoutRenderer.java:66)
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:712)
at javax.faces.webapp.UIComponentTag.encodeEnd(UIComponentTag.java:616)
at javax.faces.webapp.UIComponentTag.doEndTag(UIComponentTag.java:539)
at org.apache.myfaces.taglib.UIComponentBodyTagBase.doEndTag(UIComponentBodyTagBase.java:55)
at jsp_servlet._jsp.__home_orders._jspService(home_orders.jsp:65)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:33)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1006)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:419)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:463)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:315)
at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:328)
at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:322)
at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:147)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:352)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:198)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1006)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:419)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:28)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at org.apache.myfaces.component.html.util.ExtensionsFilter.doFilter(ExtensionsFilter.java:122)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6724)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3764)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2644)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:219)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:178)
>
at com.sun.faces.renderkit.html_basic.CommandLinkRenderer.getHiddenFieldName(CommandLinkRenderer.java:136)
at com.sun.faces.renderkit.html_basic.CommandLinkRenderer.encodeEnd(CommandLinkRenderer.java:320)
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:712)
at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:443)
at com.sun.faces.renderkit.html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:130)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:693)
at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:435)
at com.sun.faces.renderkit.html_basic.GridRenderer.encodeChildren(GridRenderer.java:233)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:693)
at org.apache.myfaces.renderkit.RendererUtils.renderChild(RendererUtils.java:444)
at org.apache.myfaces.renderkit.RendererUtils.renderChildren(RendererUtils.java:427)
at org.apache.myfaces.renderkit.RendererUtils.renderChild(RendererUtils.java:448)
at org.apache.myfaces.custom.layout.HtmlLayoutRenderer.renderTableCell(HtmlLayoutRenderer.java:259)
at org.apache.myfaces.custom.layout.HtmlLayoutRenderer.renderClassic(HtmlLayoutRenderer.java:101)
at org.apache.myfaces.custom.layout.HtmlLayoutRenderer.encodeEnd(HtmlLayoutRenderer.java:66)
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:712)
at javax.faces.webapp.UIComponentTag.encodeEnd(UIComponentTag.java:616)
at javax.faces.webapp.UIComponentTag.doEndTag(UIComponentTag.java:539)
at org.apache.myfaces.taglib.UIComponentBodyTagBase.doEndTag(UIComponentBodyTagBase.java:55)
at jsp_servlet._jsp.__home_orders._jspService(home_orders.jsp:65)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:33)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1006)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:419)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:463)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:315)
at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:328)
at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:322)
at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:147)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:352)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:198)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1006)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:419)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:28)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at org.apache.myfaces.component.html.util.ExtensionsFilter.doFilter(ExtensionsFilter.java:122)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6724)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3764)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2644)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:219)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:178)
>
