Hi Martin Yes, I have insured that the stack, request and response objects are not null.
Here is an extract of mergeTemplate function in Anchor class. I tried setting the template as well before initializing Anchor object but no luck. ======================================================================== ==== protected void mergeTemplate(Writer writer, Template template) throws Exception { final TemplateEngine engine = templateEngineManager.getTemplateEngine(template, templateSuffix); if (engine == null) { throw new ConfigurationException("Unable to find a TemplateEngine for template " + template); } if (LOG.isDebugEnabled()) { LOG.debug("Rendering template " + template); } final TemplateRenderingContext context = new TemplateRenderingContext(template, writer, getStack(), getParameters(), this); engine.renderTemplate(context); } ======================================================================== ==== Manoj -----Original Message----- From: Martin Gainty [mailto:mgai...@hotmail.com] Sent: 24 March 2009 19:38 To: Struts Users Mailing List Subject: RE: Using Anchor Component for creating custom anchor tag Have you verified the Anchor Tag's 3 required parameters stack, request, response are initialised properrly and non null before constructing the anchor tag ? Martin ______________________________________________ Disclaimer and confidentiality note This message is confidential and may be privileged. If you are not the intended recipient, we kindly ask you to please inform the sender. Any unauthorised dissemination or copying hereof is prohibited. This message serves for information purposes only and shall not have any legally binding effect. Given that e-mails can easily be subject to manipulation, we can not accept any liability for the content provided. > Subject: Using Anchor Component for creating custom anchor tag > Date: Tue, 24 Mar 2009 16:15:29 +0000 > From: manoj.dh...@sword-soft.com > To: user@struts.apache.org > > Hi, > > > > I am trying to create a custom anchor component using > org.apache.struts2.components.Anchor. This is done inside a custom > component that I am creating. > > Method that initializes Anchor component is as follows : > > > private void createLink(String action, Containable item, Writer > writer) { > > > > Component a = createAnchor(action, item); > > a.start(writer); > > a.end(writer, item.getName()); > > } > > > > private Anchor createAnchor(String action, Containable item){ > > Anchor a = new Anchor(stack, req, resp); > > a.setHref(action); > > return a; > > } > > However, if my code tries to create a link I get follwing error : > > > java.lang.NullPointerException > > at > org.apache.struts2.components.UIBean.mergeTemplate(UIBean.java:549) > > at > org.apache.struts2.components.ClosingUIBean.start(ClosingUIBean.java:59) > > at > com.poc.struts2.component.FolderBrowserComponent.createLink(FolderBrowse > rComponent.java:70) > > at > com.poc.struts2.component.FolderBrowserComponent.processItem(FolderBrows > erComponent.java:116) > > at > com.poc.struts2.component.FolderBrowserComponent.start(FolderBrowserComp > onent.java:58) > > at > org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTag > Support.java:53) > > at > org.apache.jsp.Folderbrowser_jsp._jspx_meth_bol_005ffolderbrowser_005f0( > Folderbrowser_jsp.java:145) > > at > org.apache.jsp.Folderbrowser_jsp._jspService(Folderbrowser_jsp.java:90) > > at > org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) > > at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) > > at > org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.ja > va:374) > > at > org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342) > > at > org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) > > at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) > > > Could you please guide me what is the problem with template ? Do I need > to create a custom template or need to set a default template ? > > > > Thanks in advance. > > > > Regards, > > > > Manoj Dhore > > > > > > _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ > > This email and any files transmitted with it are confidential and > intended solely for the use of the individual or entity to whom > they are addressed. > If you have received this email in error please notify the > originator of the message. 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