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From Leon Rosenberg <struts_u...@anotheria.net>
Subject Re: Struts in Resin: 500 Servlet Exception
Date Wed, 04 May 2005 08:35:05 GMT
Are you sure that listen.jar has no futher dependencies? 
It looks like something in listen.jar (a class) which is initialized 
from JdbcUser.java:238 requires some other libs.

example: 
Class A 
 B = new B();
now B is in b.jar and in class B you have something like
class B{
 private static C c;
}

if C is now in c.jar, and c.jar isn't in your libs, the call new B()
will fail, even B is in the classpath.

regards
Leon


On Tue, 2005-05-03 at 17:26 -0700, T. B. wrote:
> Hi all,
> 
> I am new to struts and tried to write a little logon
> application which has a LogonAction using other
> objects from different jar files to look up user
> accounts in DB via JDBC. But this is the error I got
> when loging in:
> 
> 500 Servlet Exception
> 
> java.lang.NoClassDefFoundError
> 	at
> com.listen.toollib.login.auth.jdbc.JdbcUser.getUser(JdbcUser.java:238)
> 	at
> com.listen.toollib.login.auth.jdbc.JdbcUser.login(JdbcUser.java:71)
> 	at logon.LogonAction.isUserLogon(LogonAction.java:30)
> 	at logon.LogonAction.execute(LogonAction.java:65)
> 	at
> org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:446)
> 	at
> org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:266)
> 	at
> org.apache.struts.action.ActionServlet.process(ActionServlet.java:1292)
> 	at
> org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:510)
> 	at
> javax.servlet.http.HttpServlet.service(HttpServlet.java:165)
> 	at
> javax.servlet.http.HttpServlet.service(HttpServlet.java:103)
> 	at
> com.caucho.server.http.FilterChainServlet.doFilter(FilterChainServlet.java:96)
> 	at
> com.caucho.server.http.Invocation.service(Invocation.java:315)
> 	at
> com.caucho.server.http.CacheInvocation.service(CacheInvocation.java:135)
> 	at
> com.caucho.server.http.RunnerRequest.handleRequest(RunnerRequest.java:346)
> 	at
> com.caucho.server.http.RunnerRequest.handleConnection(RunnerRequest.java:274)
> 	at
> com.caucho.server.TcpConnection.run(TcpConnection.java:139)
> 	at java.lang.Thread.run(Thread.java:536)
> 
> Note that at this point, lib dir contains all the jar
> files that this stack trace complains it can't find as
> shown below.
> 
> webdev:/pool/113/resin/webapps/myApp/WEB-INF/lib$ ls
> -ltr
> total 5232
> -rw-r--r--    1 tbui     webdev     456709 Aug 14 
> 2002 struts.jar
> -rw-r--r--    1 tbui     webdev      65368 Aug 14 
> 2002 jakarta-oro.jar
> -rw-r--r--    1 tbui     webdev      28755 Aug 14 
> 2002 commons-validator.jar
> -rw-r--r--    1 tbui     webdev      22146 Aug 14 
> 2002 commons-services.jar
> -rw-r--r--    1 tbui     webdev      28528 Aug 14 
> 2002 commons-resources.jar
> -rw-r--r--    1 tbui     webdev      28940 Aug 14 
> 2002 commons-pool.jar.old
> -rw-r--r--    1 tbui     webdev      20357 Aug 14 
> 2002 commons-logging.jar
> -rw-r--r--    1 tbui     webdev      29461 Aug 14 
> 2002 commons-lang.jar
> -rw-r--r--    1 tbui     webdev      14416 Aug 14 
> 2002 commons-fileupload.jar
> -rw-r--r--    1 tbui     webdev      93903 Aug 14 
> 2002 commons-digester.jar
> -rw-r--r--    1 tbui     webdev      81146 Aug 14 
> 2002 commons-dbcp.jar
> -rw-r--r--    1 tbui     webdev     146737 Aug 14 
> 2002 commons-collections.jar
> -rw-r--r--    1 tbui     webdev      81171 Aug 14 
> 2002 commons-beanutils.jar
> -rw-r--r--    1 tbui     webdev      42492 Apr 21
> 12:06 commons-pool-1.2.jar
> -rw-r--r--    1 tbui     webdev       3941 May  2
> 11:13 newtools.jar
> drwxr-xr-x    2 tbui     webdev       4096 May  3
> 15:48 META-INF
> -rw-r--r--    1 tbui     webdev    2768333 May  3
> 16:47 listen.jar
> -rw-r--r--    1 tbui     webdev     731775 May  3
> 16:48 tools.jar
> -rw-r--r--    1 tbui     webdev     651224 May  3
> 16:48 listen-xmlbeans.jar
> 
> Also,
> 
> 1) logon.LogonAction.isUserLogon calls
> com.listen.toollib.login.auth.jdbc.JdbcUser.login
> which is in tools.jar
> 2)
> com.listen.toollib.login.auth.jdbc.JdbcUser.getUser(JdbcUser.java:238)
> refers to an object in listen.jar which also exists in
> the lib dir above
> 
> I have spent the past week trying to figure out why
> but it has been in vain. Can anyone help me figure out
> which dir this application expects the jar to be if my
> set up is not correct?
> 
> Thanks so much for your help,
> 
> Thong Bui
> 
> 
> 
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