Problems on embeding pluto portlet into web application

[zhaojuan <zh...@cnic.cn>]

Hi,all,
  I want to embed the pluto container into my web application.For testing if it works, I only write a very simple jsp page. and  did step by step following the http://portals.apache.org/pluto/faq.html#simple-embed
But I met problem as follows:
Exception sending context initialized event to listener instance of class org.apache.pluto.driver.PortalStartupListener
java.lang.NullPointerException
 at org.apache.pluto.driver.PortalStartupListener.contextInitialized(PortalStartupListener.java:102)
 at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3843)
 at org.apache.catalina.core.StandardContext.start(StandardContext.java:4342)
 at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
 at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
 at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
 at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
 at org.apache.catalina.core.StandardService.start(StandardService.java:516)
 at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
 at org.apache.catalina.startup.Catalina.start(Catalina.java:578)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
 at java.lang.reflect.Method.invoke(Unknown Source)
 at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
 at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
2008-9-23 16:40:19 org.apache.catalina.core.StandardContext start
严重: Error listenerStart

I include all the nesseary lib :aopalliance-1.0.jar commons-beanutils-1.7.0.jar commons-digester-1.8.jar commons-el.jar commons-fileupload-1.1.1.jar commons-io-1.3.1.jar commons-io-1.3.jar commons-logging-api-1.1.jar jasper-compiler.jar jasper-compiler-jdt.jar jasper-runtime.jar jsp-api.jar jstl-1.0.6.jar jstl.jar naming-factory.jar naming-factory-dbcp.jar naming-resources.jar pluto-portal-driver-1.1.4.jar pluto-portal-driver-impl-1.1.4.jar 
 pluto-descriptor-api.jar and pluto-descriptor-impl.jar, as well as pluto-container.jar. and plulto-taglib.jar and pluto-driver.jar pluto-driver-impl.jar
But still couldn't sovle this problem.
What's the reason?Could anybody know it?Thank you very much.





zhaojuan
2008-09-23