Access WebSphere Variables in J2EE Applications

Accessing WebSphere Variables from inside your J2EE application isn’t as easy as it looks. They’re not environment variables or system properties, but a portion of the WebSphere configuration that is used by the WebSphere Application Server Runtime.

You can access these variables by invoking an operation on “AdminOperations” MBean as follows:

    	try
    	{
    		AdminService adminService = AdminServiceFactory.getAdminService();
    		ObjectName queryName = new ObjectName( "WebSphere:*,type=AdminOperations" );
    		Set objs = adminService.queryNames( queryName, null );
    		if ( !objs.isEmpty() )
    		{
    			ObjectName thisObj = (ObjectName)objs.iterator().next();
    			String opName = "expandVariable";
    			String signature[] = { "java.lang.String" };
    			String params[] = { "${VARIABLE_NAME}" } ;
    			Object retVal = adminService.invoke( thisObj, opName, params, signature );
    			System.out.println( retVal );
    		}
    	} catch (MalformedObjectNameException e) {
		e.printStackTrace();
	} catch (InstanceNotFoundException e) {
		e.printStackTrace();
	} catch (MBeanException e) {
		e.printStackTrace();
	} catch (ReflectionException e) {
		e.printStackTrace();
	}

This code will only work from an application running inside the server.