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Alexander,
On 5/2/14, 1:40 AM, Alexander wrote:
> I am hoping this is the proper forum for my problem. I have enabled
> the JmxRemoteLifeCycleListener and able to connect to tomcat 7
> using jconsole etc. using the following url.
Just so you know, this is likely to end in tears. What settings did
you use with that listener?
> service:jmx:rmi://10.92.12.88:10002/jndi/rmi://10.92.12.88:10001/jmxrmi
>
> However as soon as I try to connect from my own application using
> the code example below I get an error the following error. I
> figure I need to configure the InitialContextFactory, but I don't
> know what class I should specify. I also don't understand how
> jconsole is able to connect without any additional configuration,
> but my client is not.
So, using that URL, JConsole can connect? That's great.
> Perhaps somebody has some pointers on how to make remote JMX
> connections programmatically.
Does anything change if you are running on the same host as the Tomcat
process?
> ------------------------------------------------------------------------
>
> java.io.IOException : Failed to retrieve RMIServer stub:
> javax.naming.NoInitialContextException: Cannot instantiate class:
> com.sun.enterprise.naming.impl.SerialInitContextFactory [Root
> exception is java.lang.ClassNotFoundException:
> com.sun.enterprise.naming.impl.SerialInitContextFactory]
> java.io.IOException: Failed to retrieve RMIServer stub:
> javax.naming.NoInitialContextException: Cannot instantiate class:
> com.sun.enterprise.naming.impl.SerialInitContextFactory [Root
> exception is java.lang.ClassNotFoundException:
> com.sun.enterprise.naming.impl.SerialInitContextFactory] at
> javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:369)
>
>
at
> javax.management.remote.JMXConnectorFactory.connect(JMXConnectorFactory.java:270)
>
>
>
> Caused by: javax.naming.NoInitialContextException: Cannot
> instantiate class:
> com.sun.enterprise.naming.impl.SerialInitContextFactory [Root
> exception is java.lang.ClassNotFoundException:
> com.sun.enterprise.naming.impl.SerialInitContextFactory] at
> javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:674)
>
>
at
> javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:313)
>
>
at javax.naming.InitialContext.init(InitialContext.java:244)
> at javax.naming.InitialContext.<init>(InitialContext.java:216) at
> javax.management.remote.rmi.RMIConnector.findRMIServerJNDI(RMIConnector.java:1927)
>
> at
> javax.management.remote.rmi.RMIConnector.findRMIServer(RMIConnector.java:1896)
>
> at
> javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:287)
>
>
... 3 more
> Caused by: java.lang.ClassNotFoundException:
> com.sun.enterprise.naming.impl.SerialInitContextFactory at
> java.net.URLClassLoader$1.run(URLClassLoader.java:372) at
> java.net.URLClassLoader$1.run(URLClassLoader.java:361) at
> java.security.AccessController.doPrivileged(Native Method) at
> java.net.URLClassLoader.findClass(URLClassLoader.java:360) at
> java.lang.ClassLoader.loadClass(ClassLoader.java:424) at
> sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at
> java.lang.ClassLoader.loadClass(ClassLoader.java:357) at
> java.lang.Class.forName0(Native Method) at
> java.lang.Class.forName(Class.java:340) at
> com.sun.naming.internal.VersionHelper12.loadClass(VersionHelper12.java:72)
>
>
at
> com.sun.naming.internal.VersionHelper12.loadClass(VersionHelper12.java:61)
>
>
at
> javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:672)
>
>
... 9 more
Hmm. Are you using radically different versions of Java on both sides
of the connection? Not being able to find an internal class seems like
a big problem.
Where is your code mentioned in the above stack trace? Which line is
it below? (Also, this error is on the client side, not the server, right?)
> ------------------------------------------------------------------------
>
> Code extract:
>
> Map<String, String[]> env = new HashMap<String, String[]>();
> String[] credentials = new String[] { "username", "password" };
> env.put(JMXConnector.CREDENTIALS, credentials); String url =
> "service:jmx:rmi://10.92.12.88:10002/jndi/rmi://10.92.12.88:10001/jmxrmi";
>
>
serviceUrl = new JMXServiceURL(url);
> JMXConnector connector = JMXConnectorFactory.connect(serviceUrl,
> env); MBeanServerConnection connection =
> connector.getMBeanServerConnection(); ObjectName servicename = new
> ObjectName("java.lang:type=Runtime"); ObjectInstance instance =
> connection.getObjectInstance(servicename);
- -chris
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