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
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> 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
>
>
>
>
>
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