We're running into problems with existing custom java classes
as we move to MX7. It appears that the MX7 java class loader does
not behave as expected - it certainly behaves differently than in
Symptom: When calling some custom java class methods the
browser displays and error message: 500 java/package/name and a
java.lang.NoClassDefFoundError is generated in the exception.log
To reproduce the error, place a custom java classes in the
WEB-INF/classes directory or a custom jar file in the WEB-INF/lib
directory and invoke using a cf wrapper. If you look at the
exception log, you will see a java.lang.NoClassDefFoundError, which
indicates that the class was not correctly or fully loaded. The
class loader appears to load the class - no Object Instantiation
exception occurs - yet it throws the NoClassDefFoundError exception
when invoking _some_ methods. The problem is difficult to isolate
because _some_ class methods work while others do not.
The CFMX 7 release notes for J2EE servers mention new class
loading. Specifically, the context-param items in the web.xml file.
These are the cf.lib.path and the cf.class.path. I'm not sure how
this applies to CFMX servers not loaded on a J2EE server ...
Anyway, the workaround I have found is placing the jar file
in WEB-INF/cfform/jars or in the CFusionMX7/lib directory and
restarting the server. This is an obvious problem for development
as the these are not dynamic class loading directories and any
changes made to classes therein require a server restart to be
effectuated. We also used to add the following code to the
jrun-web.xml file in order to facilitate dynamic class loading:
But this has no effect in CFMX7.
So, these are the issues:
1. Classes located in WEB-INF/classes or jars located in
WEB-INF/lib are not loaded as expected and can throw
java.lang.NoClassDefFoundError. This seems to go against the J2EE
spec, but it's been a while since I've actually read it ;-)
2. Dynamic loading of java classes does not appear to be
enabled in the server.
Occurs on both boxes and all JVMs:
OS: Windows 2003 Server and XP Pro
Web Server: IIS and built in dev
JVMs: 1.4.2_05, 1.4.2_06, 1.4.2_11
Adobe, any help is appreciated resolving these issues.