Re: tiles:initComponentDefinitions and NullPointerException

Cedric Dumoulin Wed, 28 May 2003 18:55:10 -0700

This will not work with this tag because it checks for the factory existence.

You can use the special action o.a.s.tiles.actions.ReloadDefinitionsAction.java to reload the factory.

Cedric

Bastian Zapf wrote:

Salut Cedric and everybody else,
can you also use <tiles:initComponentDefinitions ...> to re-initialize the
factory? We're working here with a Websphere App. Server and would like to
do that without restarting the server/whole application.
Thanks,
bas & marco.
Dienstag, 27. Mai 2003 15:51
To: Struts Users Mailing List <[EMAIL PROTECTED]>
cc:
From: Cedric Dumoulin <[EMAIL PROTECTED]>
Subject: Re: tiles:initComponentDefinitions and NullPointerException
Hi,
 The  <tiles:initComponentDefinitions ...> tag can be used to
 initialize the tiles factory without Struts. However, the preferred way
 to initialize Tiles without Struts is to use an initialization servlet,
 like the TilesServlet.
 A blank war file initializing a Tiles factory without Struts can be
 found in the bin dist from http://www.lifl.fr/~dumoulin/tiles/. Locate
 the file tiles-blank.war.
Cedric

Umit VARDAR wrote:

Hello all,

I am trying to replace jsp pages of an application with tiles. All I do: 1. added <taglib> tags to web.xml 2. created tiles-defs.xml under the WEB-INF 3. added <tiles:initComponentDefinitions file="tiles-defs.xml" /> as the

first

tiles tag into the index.jsp

I am getting the following error, when I acces index.jsp:

java.lang.NullPointerException at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:140) at

org.apache.struts.tiles.TilesUtilImpl.applicationClass(TilesUtilImpl.java:
238)
...
the rest is in the error.txt file.

What could be the reason? Can you help me please.
Best regards
Umit VARDAR
PS. error.txt, index.jsp and tiles-defs.xml are attached.

------------------------------------------------------------------------

java.lang.NullPointerException at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:140) at
org.apache.struts.tiles.TilesUtilImpl.applicationClass(TilesUtilImpl.java:238)

at

org.apache.struts.tiles.TilesUtilImpl.createDefinitionFactoryInstance(TilesUtilImpl.java:187)

at

org.apache.struts.tiles.TilesUtilImpl.createDefinitionsFactory(TilesUtilImpl.java:166)

at

org.apache.struts.tiles.TilesUtil.createDefinitionsFactory(TilesUtil.java:206)

at

org.apache.struts.taglib.tiles.InitDefinitionsTag.doStartTag(InitDefinitionsTag.java:127)

at org.apache.jsp.index$jsp._jspService(index$jsp.java:68) at

org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at

org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet$JspServletWrapper.service(IDEJspServlet.java:173)

at

org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet.serviceJspFile(IDEJspServlet.java:246)

at

org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet.service(IDEJspServlet.java:339)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at

org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)

at

org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)

at

org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:223)

at

org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)

at

org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)

at

org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)

at

org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)

at

org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)

at

org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)

at

org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:201)

at

org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)

at

org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)

at

org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)

at

org.netbeans.modules.web.monitor.catalina.MonitorValve.invoke(MonitorValve.java:142)

at

org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)

at

org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)

at

org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)

at

org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2344)

at

org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)

at

org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)

at

org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)

at

org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)

at

org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)

at

org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)

at

org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:462)

at

org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)

at

org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)

at

org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)

at

org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:163)

at

org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)

at

org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)

at

org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)

at

org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1011)

at

org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1106)
at java.lang.Thread.run(Thread.java:536)

------------------------------------------------------------------------
<[EMAIL PROTECTED] contentType="text/html; charset=UTF-8"%>
<[EMAIL PROTECTED] prefix="tiles" uri="/WEB-INF/struts-tiles.tld" %>
<tiles:initComponentDefinitions file="tiles-defs.xml" />
<tiles:insert definition="deneme.default" flush="true" />
------------------------------------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE tiles-definitions PUBLIC
  "-//Apache Software Foundation//DTD Tiles Configuration//EN"
  "tiles-config_1_1.dtd">

<tiles-definitions>
  <definition name="deneme.default" path="deneme_def.jsp">
      <put name="header" value="header.jsp" />
      <put name="body" value="body.jsp" />
      <put name="footer" value="footer.jsp" />
  </definition>
</tiles-definitions>
------------------------------------------------------------------------
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Re: tiles:initComponentDefinitions and NullPointerException

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