Use Plugin Classpath with Openfire Plugin

When creating an Openfire plugin, some classes cannot be found by the
default classpath. This is a result of the way that Openfire loads plugins and their jars into
the classpath. For me, specifically, I got a ClassNotFoundException when trying to create an
IntialContext with WLIntialContextFactory, even though the weblogic.jar was in my plugin lib
folder. One solution is to move everything from the plugin/lib folder into openfire/lib. But
this is messy at best.

Luckily, I found a solution from someone trying
to use
GWT in an Openfire

First, set a PluginClassLoader on your Plugin class.
Here is my trimmed example:

PluginClassLoader pluginClassLoader = null;

public void
initializePlugin(PluginManager pManager, File pluginDirectory) {
= pManager.getPluginClassloader(this);

PluginClassLoader getPluginClassLoader() {
return pluginClassLoader;

Then, in my class that attempts to load
a Context, before loading it I do this:

MyPlugin myPlugin =
(MyPlugin) XMPPServer.getInstance()

if (myPlugin != null &&
myPlugin.getPluginClassLoader() != null) {