MalformedURLException: Protocol not jmxmp: rmi

Question

Hi there,
I'm accessing my MBeans remotely over jmxmp, and all looks fine through JConsole, but when I turn up logging on javax.management.remote I see this exception and the messages which follow, twice in succession the logs:
threadId=10 2009-02-10 Tue 15:49:52.375 JMXConnectorServerFactory getConnectorAsService: FINER: URL[service:jmx:rmi://<mymachinename>] Service provider exception java.net.MalformedURLException: Protocol not jmxmp: rmi
threadId=10 2009-02-10 Tue 15:49:52.375 RMIConnectorServer start: FINER: setting default class loader
threadId=10 2009-02-10 Tue 15:49:52.375 RMIConnectorServer start: FINER: setting RMIServer object
threadId=10 2009-02-10 Tue 15:49:52.390 RMIServerImpl RMIServerImpl: FINER: class=javax.management.remote.rmi.RMIJRMPServerImpl
threadId=10 2009-02-10 Tue 15:49:52.437 RMIConnectorServer start: FINER: getting RMIServer object to export
threadId=10 2009-02-10 Tue 15:49:52.437 RMIConnectorServer start: FINER: Encoding URL
threadId=10 2009-02-10 Tue 15:49:52.453 RMIConnectorServer start: FINER: Encoded URL: service:jmx:rmi://<mymachinename>/stub/rO0ABXNyAC5qYXZheC5tYW5hZ2VtZW50LnJlbW90ZS5ybWkuUk1JU2VydmVySW1wbF9TdHViAAAAAAAAAAICAAB4cgAaamF2YS5ybWkuc2VydmVyLlJlbW90ZVN0dWLp/tzJi+FlGgIAAHhyABxqYXZhLnJtaS5zZXJ2ZXIuUmVtb3RlT2JqZWN002G0kQxhMx4DAAB4cHc2AApVbmljYXN0UmVmAA0xMC4xODMuMjUyLjc1AAAKY8JOWi3aJmq+9lY4KgAAAR9fKdqGgAAAeA==
threadId=10 2009-02-10 Tue 15:49:52.453 RMIConnectorServer start: FINER: Connector Server Address = service:jmx:rmi://<mymachinename>/stub/rO0ABXNyAC5qYXZheC5tYW5hZ2VtZW50LnJlbW90ZS5ybWkuUk1JU2VydmVySW1wbF9TdHViAAAAAAAAAAICAAB4cgAaamF2YS5ybWkuc2VydmVyLlJlbW90ZVN0dWLp/tzJi+FlGgIAAHhyABxqYXZhLnJtaS5zZXJ2ZXIuUmVtb3RlT2JqZWN002G0kQxhMx4DAAB4cHc2AApVbmljYXN0UmVmAA0xMC4xODMuMjUyLjc1AAAKY8JOWi3aJmq+9lY4KgAAAR9fKdqGgAAAeA==
threadId=10 2009-02-10 Tue 15:49:52.453 RMIConnectorServer start: FINER: started.I did find this thread: http://forums.sun.com/thread.jspa?forumID=537&threadID=5137348 but placing the service provider's class name under META-INF/services didn't resolve it.
I also tried setting the environment property of my connector server bean in Spring but to no avail...
     <bean id="jmxServerConnector" class="org.springframework.jmx.support.ConnectorServerFactoryBean"
          lazy-init="default" autowire="default" dependency-check="default">
          <property name="serviceUrl" value="service:jmx:jmxmp://localhost:4567/" />
          <property name="threaded" value="true" />
          <property name="daemon" value="true" />
          <property name="server" ref="jmxMBeanServer" />
          <property name="environment">
               <props>
                    <prop key="jmx.remote.protocol.provider.pkgs">com.sun.jmx.remote.protocol.jmxmp</prop>
               </props>
          </property>
     </bean>(I tried with the value of the prop as com.sun.jmx.remote.protocol also..maybe I’m missing something here)
While the MalformedURLException doesn't seem to affect the functionality, I would like to get it resolved or at least know why it happens/if it can be ignored.
I have jmxremote_optional.jar on my classpath and can access the mbeans by connecting to jconsole with my service url.
Any insight as to how I can resolve this would be much appreciated.
Many thanks!
- Edel

Answer 1

When executing an operation via JMX using JConsole, I get the following error:
Problem invoking getManifest : java.rmi.UnmarshallException: Error unmarshalling return: nested is: java.lang.ClassNotFoundException: foo.bar.InernalServiceException (no security manager: RMI class loader disabled)
Code snippet:
public ArrayList getManifest(String s) throws InternalServiceException, MBeanException{
String path = ".\\foo_services.jar"; // Invalid path on purpose to test exception...
File file = new File(path);
FileInputStream fileInput;
try {
fileInput = new FileInputStream(file);
} catch (FileNotFoundException e) {
String msg = "The manifest file is not found in the given path";
if (logger.isErrorEnabled()) logger.error(msg);
throw new InternalServiceException(msg, ErrorConstants.JMX_FILE_NOT_FOUND);
If I throw new RuntimeException(msg, e) instead of InternalServiceException(msg, ErrorConstants.JMX_FILE_NOT_FOUND), it works and I get the appropriate exception.
What is the reason for this?