skip unusable Store and Transport classes

[glassfishrobot]

In complex class loading situations, it can be possible for there to be
multiple copies of the JavaMail classes. A Store or Transport defined
by one copy may be loaded by another copy, but it won't be usable because
they're in different ClassLoaders. In this case, JavaMail should skip
over the unusable class and try to load the class from another ClassLoader.

This can happen, for example, in GlassFish if the application includes the
JavaMail classes, the application class loader is configured to prefer
application classes over system classes, and the app server itself tries
to use JavaMail when running in the context of the application.

Affected Versions

1.5.2

Environment

All
All

[glassfishrobot]

@glassfishrobot Commented
Reported by @bshannon

[glassfishrobot]

@glassfishrobot Commented
@bshannon said:
I've fixed this for JavaMail 1.5.3.

[glassfishrobot]

@glassfishrobot Commented
Jason-Mehrens said:
I've confirmed that this patch fixes GLASSFISH-20800 for both the MailHandler and the SMTPHandler when installed in the lib/ext or in lib/endorsed.

The GlassFish issue NoSuchMethodException when attempting to install log handler in GlassFish server can be found at https://java.net/jira/i#browse/GLASSFISH-20800

[glassfishrobot]

@glassfishrobot Commented
This issue was imported from Bugzilla JAVAMAIL-6668

[glassfishrobot]

@glassfishrobot Commented
Marked as fixed on Tuesday, May 2nd 2017, 1:08:44 pm

[glassfishrobot]

• Issue Imported From: https://github.com/javaee/javamail/issues/144
• Original Issue Raised By:@glassfishrobot
• Original Issue Assigned To: @bshannon
• Original Issue Closed By:@glassfishrobot