Hi,
I am (still!) trying to set up Tiles in my Struts app.
I am hoping to use Tiles definitions, but can't find any usable (working) simple examples to build from. Even the one at Cedric Dumoulin's site doesn't use this (best practice?) feature.
I have tried a 'cut n shut' from the stuff bundled with Struts to no avail.
As far as I can work out, to get Tiles working (with Struts already configured), you need to:
Add the following to web.xml:
<servlet> etc... <init-param> <param-name>definitions-config</param-name> <param-value>/WEB-INF/tiles-defs.xml</param-value> </init-param> </servlet>
<taglib> <taglib-uri>/WEB-INF/struts-tiles.tld</taglib-uri> <taglib-location>/WEB-INF/struts-tiles.tld</taglib-location> </taglib>
Add the following to struts-config.xml:
<action path="/login" forward="fulluser"/>
<plug-in className="org.apache.struts.tiles.TilesPlugin" >
<set-property property="definitions-config" value="/WEB-INF/tiles-defs.xml />
</plug-in>
I have the following in my tiles defs.xml file:
<!DOCTYPE tiles-definitions PUBLIC "-//Apache Software Foundation//DTD Tiles Configuration//EN"
"http://jakarta.apache.org/struts/dtds/tiles-config.dtd";>
<tiles-definitions> <definition name="fulluser" path="/tiles/layout.jsp"> <put name="header" value="/tiles/header.jsp" /> <put name="menu" value="/tiles/menu.jsp" /> <put name="body" value="/tiles/body.jsp" /> <put name="footer" value="/tiles/footer.jsp" /> </definition> </tiles-definitions>
Then I invoke the action forward in a jsp file with the following:
<html:link page="/do/login">Login</html:link>
and get this...
java.lang.NullPointerException
org.apache.struts.util.RequestUtils.pageURL(RequestUtils.java:1532)
org.apache.struts.util.RequestUtils.computeURL(RequestUtils.java:487)
org.apache.struts.taglib.html.RewriteTag.doStartTag(RewriteTag.java:99)
org.apache.strutsel.taglib.html.ELRewriteTag.doStartTag(ELRewriteTag.java:291)
org.apache.jsp.index_jsp._jspx_meth_html_rewrite_0(index_jsp.java:110)
org.apache.jsp.index_jsp._jspService(index_jsp.java:69)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)All the webapp/tiles/*.jsp files are where they should be and the Struts stuff alone works OK.
I have tried adding the following to struts-config with the same result.
<controller processorClass="org.apache.struts.tiles.TilesRequestProcessor"></controller>
I have also read somewhere that I may need an XML parser?
Can anyone spot anything obviously wrong or know of a simple up-to-date example?
Thanks, Andy
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