error with tiles , please help

[noon ab]

tiles-defs.xml::

<?xml version='1.0' encoding='windows-1256'?>
 
<tiles-definitions>
    <definition name="tilesDef" path="/template.jsp">
        <put name="header" value="/header.jsp"/>
        <put name="footer" value="/footer.jsp"/>
        <put name="body" value="/body.jsp"/>
    </definition>
    
  <!--
    <definition name="tiles.ext" extends="tilesDef">
          <put name="body" value="body1.jsp"/>
    </definition>
  -->  
</tiles-definitions>

header.jsp:

<DIV align="center">
      <SPAN style="background-color:rgb(153,0,102); background-color:rgb(192,192,192);"><FONT face="Arial" size="7" color="#ff3333">
        <tiles:insert/>
      This is the header</FONT></SPAN>
    </DIV>
    <DIV align="center"> </DIV>

footer.jsp:

 <DIV align="center">
      <SPAN style="background-color:rgb(153,0,102); background-color:rgb(192,192,192);"><FONT face="Arial" size="7" color="#990066">
      
      This is the footer</FONT></SPAN>
    </DIV>
  

body.jsp:

<P> </P>
<H1>ths is the body</H1>

web.xml:

<?xml version = '1.0' encoding = 'windows-1256'?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
  <description>Empty web.xml file for Web Application</description>
  <servlet>
    <servlet-name>action</servlet-name>
    <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
    <init-param>
      <param-name>config</param-name>
      <param-value>/WEB-INF/struts-config.xml</param-value>
    </init-param>
    <init-param>
        <param-name>definitions-config</param-name>
        <param-value>/WEB-INF/tiles-defs.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>action</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>
  <session-config>
    <session-timeout>35</session-timeout>
  </session-config>
  <mime-mapping>
    <extension>html</extension>
    <mime-type>text/html</mime-type>
  </mime-mapping>
  <mime-mapping>
    <extension>txt</extension>
    <mime-type>text/plain</mime-type>
  </mime-mapping>
  <taglib>
    <taglib-uri>/WEB-INF/struts-template.tld</taglib-uri>
    <taglib-location>/WEB-INF/struts-template.tld</taglib-location>
  </taglib>
  <taglib>
    <taglib-uri>/WEB-INF/struts-tiles.tld</taglib-uri>
    <taglib-location>/WEB-INF/struts-tiles.tld</taglib-location>
  </taglib>
  <taglib>
    <taglib-uri>/WEB-INF/struts-logic.tld</taglib-uri>
    <taglib-location>/WEB-INF/struts-logic.tld</taglib-location>
  </taglib>
  <taglib>
    <taglib-uri>/WEB-INF/struts-html.tld</taglib-uri>
    <taglib-location>/WEB-INF/struts-html.tld</taglib-location>
  </taglib>
  <taglib>
    <taglib-uri>/WEB-INF/struts-bean.tld</taglib-uri>
    <taglib-location>/WEB-INF/struts-bean.tld</taglib-location>
  </taglib>
</web-app>

struts-config.xml

<?xml version = '1.0' encoding = 'windows-1256'?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.1//EN" "http://jakarta.apache.org/struts/dtds/struts-config_1_1.dtd">
<struts-config>
  <action-mappings>
    <action
            path="/actioName" 
            type="action.MyAction" 
            parameter="tilesDef">
   
      <forward name="failure" path="/tilesDef"/>
    </action>
</action-mappings>
  <message-resources parameter="tile.mypackage.ApplicationResources"/>
 
  <plug-in className="org.apache.struts.tiles.TilesPlugin" >
    <set-property property="definitions-config" value="/WEB-INF/tiles-defs.xml" />
</plug-in>
 

</struts-config>

MyAction.java

package action;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.ForwardAction;
 
public class MyAction extends ForwardAction 
{
   public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException
    {
      return mapping.findForward("failure");
    }
     
}

template.jsp

<html>
<body>
<table  border="2"  width="300"  bordercolor="Gray">
  <tr>
    <td  bgcolor="Blue"><strong></strong></td>
  </tr>
  <tr>
    <td><tiles:insert attribute="header"/></td>
  </tr>
  <tr>
    <td><tiles:insert attribute="body"/></td>
  </tr>
</table>                     
    
 </body>
</html>

on running the template.jsp the following error appear

java.lang.NullPointerExceptionat org.apache.struts.taglib.tiles.InsertTag.processAttribute(InsertTag.java:689)at org.apache.struts.taglib.tiles.InsertTag.createTagHandler(InsertTag.java:489)at org.apache.struts.taglib.tiles.InsertTag.doStartTag(InsertTag.java:451)at _template._jspService(template.jsp:16)[SRC:/template.jsp]at com.orionserver[Oracle Application Server Containers for J2EE 10g (10.1.2.0.0)].http.OrionHttpJspPage.service(OrionHttpJspPage.java:57)at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:347)at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:509)at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:413)at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.0)].server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:65)at oracle.security.jazn.oc4j.JAZNFilter.doFilter(Unknown Source)at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.0)].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:649)at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.0)].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:322)at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.0)].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:790)at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.0)].server.http.HttpRequestHandler.run(HttpRequestHandler.java:270)at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.0)].server.http.HttpRequestHandler.run(HttpRequestHandler.java:112)at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.0)].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:192)at java.lang.Thread.run(Thread.java:534)



if any one know the reason for the error please help me

and thank you very much

[Doug Slattery]

Hi Noon,

Could it be the empty tiles:insert tag you have in the header.jsp? That's where I would place my bet.

<DIV align="center">
      <SPAN style="background-color:rgb(153,0,102); background-color:rgb(192,192,192);"><FONT face="Arial" size="7" color="#ff3333">
        [B]<tiles:insert/>[/B]
      This is the header</FONT></SPAN>
    </DIV>
    <DIV align="center"> </DIV>

Aloha,
Doug

-- Nothing is impossible if I'mPossible