Hi,
I am trying to load a class with a variable name (string) from an EJB (in JBoss). In a stand-alone application the usual way of doing that is to write a custom classloader and constructing the class from a file through a bytestream if it isn't loaded. I tried to do the same thing from an EJB but that fails.
If I try to instantiate the class like this:
ReplyClass = (Thread.currentThread().getContextClassLoader()).loadClass(replyClassName);
reply=(AAAReply) ReplyClass.newInstance();
reply.generateReply();
I get (for obvious reasons) this:
16:01:17,463 INFO [STDOUT] java.lang.ClassNotFoundException: No ClassLoaders found for: AAAReplyPBAC
If I call the classloader from the EJB like this:
ReplyClass = ccl.loadClass(replyClassName);
reply= (AAAReply) ReplyClass.newInstance();
reply.generateReply();
And in the classloader the class file is looked up (this is a modified version of the CompilingClassLoader from the IBM developerworks classloader tutorial)
File classFile = new File(classFilename);
System.out.println("classFile exists? " + classFile.exists());
System.out.println("Path: " + classFile.getAbsolutePath());
I get this:
16:04:20,479 INFO [STDOUT] classFile exists? false
16:04:20,479 INFO [STDOUT] Path: C:\jboss-4.0.3SP1\bin\AAAReplyPBAC.class
16:04:21,682 INFO [STDOUT] general error : AAAReplyPBAC
16:04:21,682 INFO [STDOUT] java.lang.ClassNotFoundException: AAAReplyPBAC
16:04:21,682 INFO [STDOUT] at java.net.URLClassLoader$1.run(URLClassLoader.java:199)
It seems that the classloader isn't looking in the right place; it should be looking in the EJB/EAR jar in the deployment directory of the application server (JBoss). Is that the case, and how can I get the classloader to look there? Or is something else wrong?
Thanks,
Fred.
