Discussion :

[marone219]

Bonjour à tous,

je suis débutant en java

j'ai un Mbean serveur qui fonctionne correctement grâce au tuto
http://skebir.developpez.com/tutoriels/java/jmx/

mais dans le tuto Selim KEBIR a utilisé jconsole comme client.

je vais créer un client que j'utiliserai dans mon interface graphique, le problème est que tous les exemples j'ai trouvé sur Internet en commençant par celles d'Oracle génère des erreurs.

quelques idées ou propositions m'aideraient beaucoup

[Gugelhupf]

Bonjour,

Peux-tu nous décrire tes étapes et nous indiquer les erreurs ?

Cordialement,

[marone219]

Voici mon mbean

Code Java :

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/*
 * Hello.java
 *
 * Created on 7 septembre 2016, 17:56
 */
package monitor.sdf;
 
import javax.management.*;
 
/**
 * Class Hello
 *
 * @MARONE219
 */
public class Hello implements HelloMBean {
    /**
     * Attribute : Helloword
     */
    private String helloword;
 
    public Hello() {
    }
 
    /**
     * Get NewAttribute0 Description
     */
    public String getHelloword() {
        return helloword;
    }
 
    /**
     * Set NewAttribute0 Description
     */
    public void setHelloword(String value) {
        helloword = value;
    }
 
    /**
     * newOperation0 Description
     * @param x parameter0 Description
     * @param y parameter1 Description
     * @return int
     */
    public int add(int x, int y) {
        //TODO add your own implementation
        return x + y;
    }
 
    /**
     * newOperation1 Description
     */
    public void sayHello() {
        System.out.println(helloword);
    }
}

Son interface

Code Java :

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/*
 * HelloMBean.java
 *
 * Created on 7 septembre 2016, 17:56
 */
package monitor.sdf;
 
/**
 * Interface HelloMBean
 *
 * @author 3tête
 */
public interface HelloMBean {
 
    /**
     * Get NewAttribute0 Description
     */
    public String getHelloword();
 
    /**
     * Set NewAttribute0 Description
     */
    public void setHelloword(String value);
 
    /**
     * newOperation0 Description
     * @param x parameter0 Description
     * @param y parameter1 Description
     * @return int
     */
    public int add(int x, int y);
 
    /**
     * newOperation1 Description
     */
    public void sayHello();
 
}

Mon serveur

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package monitor;
 
import java.lang.management.ManagementFactory;
import java.rmi.registry.LocateRegistry;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.management.MBeanServer;
import javax.management.ObjectName;
import javax.management.remote.JMXConnectorServer;
import javax.management.remote.JMXConnectorServerFactory;
import javax.management.remote.JMXServiceURL;
import monitor.sdf.Hello;
 
/**
 *
 * @ MARONE219
 */
public class Monitor {
 
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
        try {
            LocateRegistry.createRegistry(9999);
            ObjectName name = new ObjectName("Hello:type=helloObject");
            Hello h = new Hello();
            h.setHelloword("Bonjour MC Marone");
            mbs.registerMBean(h, name);
            JMXServiceURL url = new JMXServiceURL("service:jmx:rmi://localhost/jndi/rmi://localhost:9999/server");
            JMXConnectorServer cs = JMXConnectorServerFactory.newJMXConnectorServer(url, null, mbs);
            cs.start();
            System.out.println("ecoute ........");
            int n = 1;
            while (true) {                
                System.out.println(h.getHelloword());
                Thread.sleep(3000);
 
            }
        } catch (Exception ex) {
            Logger.getLogger(Monitor.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
 
}

Mon client

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package client;
 
import java.util.HashMap;
import javax.management.Attribute;
import javax.management.JMX;
import javax.management.MBeanServerConnection;
import javax.management.ObjectName;
import javax.management.remote.JMXConnector;
import javax.management.remote.JMXConnectorFactory;
import javax.management.remote.JMXServiceURL;
import monitor.sdf.HelloMBean;
 
public class Client {
 
    public static void main(String[] args) {
        try {
            // Environment map
            //
            System.out.println("\nInitialize the environment map");
            HashMap env = new HashMap();
 
            // Provide the credentials required by the server to successfully
            // perform user authentication
            //
//            String[] credentials = new String[] { "username" , "password" };
//            env.put("jmx.remote.credentials", credentials);
 
            // Create an RMI connector client and
            // connect it to the RMI connector server
            //
            System.out.println("\nCreate an RMI connector client and " +
                               "connect it to the RMI connector server");
            JMXServiceURL url = new JMXServiceURL(
              "service:jmx:rmi://localhost/jndi/rmi://localhost:9999/server");
            // Get an MBeanServerConnection
            //
            try (JMXConnector jmxc = JMXConnectorFactory.connect(url, null)) {
                // Get an MBeanServerConnection
                //
                System.out.println("\nGet an MBeanServerConnection");
                MBeanServerConnection mbsc = jmxc.getMBeanServerConnection();
 
                // Get domains from MBeanServer
                //
                System.out.println("\nDomains:");
                String domains[] = mbsc.getDomains();
                for (int i = 0; i < domains.length; i++) {
                    System.out.println("\tDomain[" + i + "] = " + domains[i]);
                }
                // Create SimpleStandard MBean
                //
//                ObjectName mbeanName = new ObjectName("monitor.sdf:type=Hello");
                ObjectName mbeanName = ObjectName.getInstance("monitor.sdf:type=helloObject");
                System.out.println("\nCreate Hello MBean...");
                mbsc.createMBean("Hello", mbeanName);
//                mbsc.createMBean("Hello", mbeanName, null, null);
 
                // Get MBean count
                //
                System.out.println("\nMBean count = " + mbsc.getMBeanCount());
 
                // Get State attribute
                //
                System.out.println("\nState = " +
                        mbsc.getAttribute(mbeanName, "helloword"));
 
                // Set State attribute
                //
                mbsc.setAttribute(mbeanName,
                        new Attribute("helloword", "MC MARONE"));
 
                // Get State attribute
                //
                // Another way of interacting with a given MBean is through a
                // dedicated proxy instead of going directly through the MBean
                // server connection
                //
                HelloMBean proxy = JMX.newMBeanProxy(
                        mbsc, mbeanName, HelloMBean.class);
                System.out.println("\nHelloword = " + proxy.getHelloword());
 
                // Add notification listener on SimpleStandard MBean
                //
                ClientListener listener = new ClientListener();
                System.out.println("\nAdd notification listener...");
                mbsc.addNotificationListener(mbeanName, listener, null, null);
 
                // Invoke "reset" in SimpleStandard MBean
                //
                // Calling "reset" makes the SimpleStandard MBean emit a
                // notification that will be received by the registered
                // ClientListener.
                //
                System.out.println("\nInvoke reset() in SimpleStandard MBean...");
                mbsc.invoke(mbeanName, "sayHello", null, null);
 
                // Sleep for 2 seconds in order to have time to receive the
                // notification before removing the notification listener.
                //
                System.out.println("\nWaiting for notification...");
                Thread.sleep(2000);
 
                // Remove notification listener on SimpleStandard MBean
                //
                System.out.println("\nRemove notification listener...");
                mbsc.removeNotificationListener(mbeanName, listener);
 
                // Unregister SimpleStandard MBean
                //
                System.out.println("\nUnregister Hello MBean...");
                mbsc.unregisterMBean(mbeanName);
 
                // Close MBeanServer connection
                //
                System.out.println("\nClose the connection to the server");
            }
            System.out.println("\nBye! Bye!");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

Et l’erreur affichée par le client

Code :

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javax.management.ReflectionException: The MBean class could not be loaded by the default loader repository
	at com.sun.jmx.mbeanserver.MBeanInstantiator.findClassWithDefaultLoaderRepository(Unknown Source)
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.createMBean(Unknown Source)
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.createMBean(Unknown Source)
	at com.sun.jmx.mbeanserver.JmxMBeanServer.createMBean(Unknown Source)
	at javax.management.remote.rmi.RMIConnectionImpl.doOperation(Unknown Source)
	at javax.management.remote.rmi.RMIConnectionImpl.access$300(Unknown Source)
	at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(Unknown Source)
	at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(Unknown Source)
	at javax.management.remote.rmi.RMIConnectionImpl.createMBean(Unknown Source)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at sun.rmi.server.UnicastServerRef.dispatch(Unknown Source)
	at sun.rmi.transport.Transport$1.run(Unknown Source)
	at sun.rmi.transport.Transport$1.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.Transport.serviceCall(Unknown Source)
	at sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown Source)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(Unknown Source)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)
	at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(Unknown Source)
	at sun.rmi.transport.StreamRemoteCall.executeCall(Unknown Source)
	at sun.rmi.server.UnicastRef.invoke(Unknown Source)
	at com.sun.jmx.remote.internal.PRef.invoke(Unknown Source)
	at javax.management.remote.rmi.RMIConnectionImpl_Stub.createMBean(Unknown Source)
	at javax.management.remote.rmi.RMIConnector$RemoteMBeanServerConnection.createMBean(Unknown Source)
	at client.Client.main(Client.java:46)
Caused by: java.lang.ClassNotFoundException: Hello
	at com.sun.jmx.mbeanserver.ClassLoaderRepositorySupport.loadClass(Unknown Source)
	at com.sun.jmx.mbeanserver.ClassLoaderRepositorySupport.loadClass(Unknown Source)
	at com.sun.jmx.mbeanserver.MBeanInstantiator.findClassWithDefaultLoaderRepository(Unknown Source)
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.createMBean(Unknown Source)
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.createMBean(Unknown Source)
	at com.sun.jmx.mbeanserver.JmxMBeanServer.createMBean(Unknown Source)
	at javax.management.remote.rmi.RMIConnectionImpl.doOperation(Unknown Source)
	at javax.management.remote.rmi.RMIConnectionImpl.access$300(Unknown Source)
	at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(Unknown Source)
	at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(Unknown Source)
	at javax.management.remote.rmi.RMIConnectionImpl.createMBean(Unknown Source)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at sun.rmi.server.UnicastServerRef.dispatch(Unknown Source)
	at sun.rmi.transport.Transport$1.run(Unknown Source)
	at sun.rmi.transport.Transport$1.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.Transport.serviceCall(Unknown Source)
	at sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown Source)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(Unknown Source)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)