[jbossseam-issues] [JBoss JIRA] Commented: (JBSEAM-4029) NPE in JBossClusterMonitor.locateJBoss when other non-JBoss JMX servers are present
[
https://jira.jboss.org/jira/browse/JBSEAM-4029?page=com.atlassian.jira.pl...
]
Joshua Davis commented on JBSEAM-4029:
--------------------------------------
This fixes it:
protected MBeanServer locateJBoss()
{
// JBSEAM-4029 [jsd] Addresses NPE
for (Object o : MBeanServerFactory.findMBeanServer(null))
{
MBeanServer server = (MBeanServer) o;
if ("jboss".equals(server.getDefaultDomain()))
{
return server;
}
}
return null;
}
NPE in JBossClusterMonitor.locateJBoss when other non-JBoss JMX
servers are present
-----------------------------------------------------------------------------------
Key: JBSEAM-4029
URL: https://jira.jboss.org/jira/browse/JBSEAM-4029
Project: Seam
Issue Type: Bug
Affects Versions: 2.1.1.GA
Environment: Seam 2.1.1.GA, JBoss AS 4.2.2.GA, JDK 1.5.0_12, Linux
Reporter: Joshua Davis
Seam 2.1.1.GA doesn't start up when there is another JMX server.
Repro:
1. Specify system properties so that the sun JMX server is also started:
-Dcom.sun.management.jmxremote.port=12345
-Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false
-Djboss.platform.mbeanserver
-Djavax.management.builder.initial=org.jboss.system.server.jmx.MBeanServerBuilderImpl
2. Start JBoss with any Seam 2.1.1.GA application.
3. Observe the following error on startup:
2009-03-21 17:38:51,065 [main ] INFO javax.servlet.ServletContextListener - Welcome to
Seam 2.1.1.GA
2009-03-21 17:38:55,248 [main ] ERROR
org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/] - Exception sending
context initialized event to listener instance of class
org.jboss.seam.servlet.SeamListener
org.jboss.seam.InstantiationException: Could not instantiate Seam component:
org.jboss.seam.jmx.jbossClusterMonitor
at org.jboss.seam.Component.newInstance(Component.java:2106)
at org.jboss.seam.contexts.Contexts.startup(Contexts.java:304)
at org.jboss.seam.contexts.Contexts.startup(Contexts.java:278)
at
org.jboss.seam.contexts.ServletLifecycle.endInitialization(ServletLifecycle.java:112)
at org.jboss.seam.init.Initialization.init(Initialization.java:735)
at org.jboss.seam.servlet.SeamListener.contextInitialized(SeamListener.java:35)
...
Caused by: java.lang.NullPointerException
at
org.jboss.seam.jmx.JBossClusterMonitor.locateJBoss(JBossClusterMonitor.java:145)
at org.jboss.seam.jmx.JBossClusterMonitor.create(JBossClusterMonitor.java:54)
...
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