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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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