Classnotfound when loading report

Question

Post Author: Codeamazon
CA Forum: Deployment
&#91;I've searched and don't see an answer to this...be happy to be proven wrong.  Also not sure if this should go here, or to the Java forum.&#93;I'm trying to get the Java Reporting Component working.  My environment is OpenVMS, and we've installed Tomcat specifically for this project.  I do have JSPs working with beans with database connections, so the underlying Java side seems to be functional, however I get a classnotfound error when I try to load a report.Here is basic.jsp, the sample JSP that I got from online documentation : http://www.businessobjects.com/pdf/dev_zone/crxi_java_startup_guide.pdf , along with the error it generates.  I have debugged the report path by commenting out the CRConfig.xml report-path option and using an absolute approach.  REPORT1.RPT is in the web-inf/classes directory of my app.  Here is my code:  &#91;HTML STUFF HERE&#93;<%@page import="com.crystaldecisions.reports.sdk." %><%@page import="com.crystaldecisions.sdk.occa.report.reportsource." %><%@page import="com.crystaldecisions.sdk.report.lib.*" %><%    String reportName="REPORT1.RPT";    try    {      //check to see if report source already exists      Object reportSource = session.getAttribute("reportSource");      //if not yet opened      if (reportSource == null)      {        ReportClientDocument oReportClientDocument = new ReportClientDocument();        oReportClientDocument.open(reportName, 0);======more stuff, but the code fails on this line==========Error:root cause java.lang.NoClassDefFoundError     java.lang.Class.forName0(Native Method)     java.lang.Class.forName(Class.java:141)     com.crystaldecisions.proxy.remoteagent.z.a(Unknown Source)     com.crystaldecisions.sdk.occa.report.application.ReportAppSession.int(Unknown Source)     com.crystaldecisions.sdk.occa.report.application.ReportAppSession.initialize(Unknown Source)     com.crystaldecisions.sdk.occa.report.application.ClientDocument.for(Unknown Source)     com.crystaldecisions.sdk.occa.report.application.ReportClientDocument.for(Unknown Source)     com.crystaldecisions.sdk.occa.report.application.ClientDocument.open(Unknown Source)     com.crystaldecisions.reports.sdk.ReportClientDocument.open(Unknown Source)     org.apache.jsp.basic_jsp._jspService(org.apache.jsp.basic_jsp:79)     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)     javax.servlet.http.HttpServlet.service(HttpServlet.java:802) Looks to me like somewhere in the report loader, it isn't finding a class it needs, which suggests a missing .jar, but I can't find one missing based on the documentation.  I've installed these .jars in the apps' web-inf/lib directory:
CONCURRENT.JAR;2  
CrystalCharting.jar;1                  
CRYSTALCOMMON.JAR;1
CRYSTALCONTENTMODELS.JAR;1             
CrystalExporters.jar;1
CrystalExportingBase.jar;1             
CRYSTALFORMULAS.JAR;1
CRYSTALQUERYENGINE.JAR;1               
CRYSTALREPORTENGINE.JAR;1
CRYSTALREPORTINGCOMMON.JAR;1           
ICU4J.JAR;2        
ICU4J.JAR;1
JRCEROM.JAR;1      
KEYCODEDECODER.JAR;1                   
LOG4J.JAR;2
LOG4J.JAR;1        
METAFILERENDERER.JAR;1                 
RASAPP.JAR;1
RASCORE.JAR;1      
RPOIFS.JAR;1       
SERIALIZATION.JAR;1
URIUtil.jar;1
webreporting-jsf.jar;1                 
webreporting.jar;1
XERCESIMPL.JAR;1
XML-APIS.JAR;2     
XML-APIS.JAR;1
I based this list on Crystal Reports 11/Developer
Files/Help/chs/JavaReportingComponent_docs/reference/default.htm ,
"required components" list.  Can anyone help me solve this or suggest how I can debug it or get more information about what it's not finding?Thanks,Shasta 

Answer 1

Thanks for helping me! I'm starting the rmiregistry in
a clean environment (according to the Sun tutorial)
by:
set CLASSPATH=; //Just to make sure all paths are
viped out
rmiregistry -J-Dsun.rmi.loader.logLevel=VERBOSE
If I echo the current CLASSPATH, I can see it's empty.
However, I'm starting the registry in the root
directory of the RMI-server application. Bad idea? As
I understand it, the registry shall be started in an
environment without any references to stub-files or
anything else involving the RMI-server. Still
confused...Looking at your explanation you could run it in two ways
1) Run it in an environrmrnt where classpath is not null and where the java.rmi.codebase property is set appropriately.
2) Run it in an environment where the applications classes are not on the classpath.
The requirements for 2) are
a) CLASSPATH is not null and doesnot include any entry of the your application classes.
b) CLASSPATH is null and working directory (".") is not the root your applications packages structure. The reason being that the null CLASSPATH is interpreted as "."
Or else in case you dont wanna set the codebase property u can acquire a required class via RMIClassLoader.loadClass method.