Yes, you can easily write a Java app to access MBeans within JBoss, and you
don't need JDK 5 to do it. Here is some simple code that prints out the
attribute value of a particular mbean:
package foo.bar;
| import java.util.Hashtable;
| import javax.management.MBeanServerConnection;
| import javax.management.ObjectName;
| import javax.naming.Context;
| import javax.naming.InitialContext;
| public class MBean {
| public static void main(String[] args) throws Exception {
| Hashtable env = new Hashtable();
| String factory = "org.jnp.interfaces.NamingContextFactory";
| env.put(Context.INITIAL_CONTEXT_FACTORY, factory);
| String url1 = "jnp://localhost:1099";
| env.put(Context.PROVIDER_URL, url1);
| Context ctx = new InitialContext(env);
| MBeanServerConnection mconn =
(MBeanServerConnection)ctx.lookup("jmx/invoker/RMIAdaptor");
| ObjectName name = new
ObjectName("jboss.jca:name=ds/ProductDS,service=ManagedConnectionPool");
| Object val = mconn.getAttribute(name, "InUseConnectionCount");
| System.out.println(name + "\n\tInUseConnectionCount=" + val);
| }
| }
Note that the MBeanServerConnection is accessed via JNDI, and not via a
JMXServiceURL. (My search for a way to use a JMXServiceURL never turned up any
schemes that worked.)
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