Re: JSF Chart Creator and JSF Client Side Validators

Thu, 12 Jan 2006 11:02:17 -0800 

Hi,
I'd like to use the chart creator component in one of my JSF applications. I followed the installation steps in the manual[1] and copied the jars to the /lib folder. I followed the example in the manual, but when my jsf page is rendered, I just get a broken image icon and a "NullPointerException"[2] in the log file. 

Any pointers? Any help really appreciated!

Thanks and by the way, there's an upper/lowercase typo in the manual.

Installation: step3: the component-type should be "chartCreator" not 
"chartcreator", right?


Enjoy,

        Kurt

[1] http://www.jroller.com/resources/c/cagataycivici/manual.jar

[2] Here's the detailed trace:

ERROR: Servlet.service() for servlet ChartWriter threw exception (2006-01-12 
10:47:48,578 
http-8080-Processor25_org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/sakai-ecgviewer-tool].[ChartWriter])

java.lang.NullPointerException
        at chartcreator.ChartWriter.doGet(ChartWriter.java:83)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

	at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
	at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
	at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)

        at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
        at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)

	at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)

        at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
        at 
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)

	at 
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
	at 
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
	at 
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
	at 
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
























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