[jbossseam-issues] [JBoss JIRA] Updated: (JBSEAM-4029) NPE in JBossClusterMonitor.locateJBoss when other non-JBoss JMX servers are present

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 Assignee: Norman Richards Fix For: 2.2.1.CR1 Attachments: JBSEAM-4029_fix_for_NPE_in_JBossClusterMonitor.patch 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) ...