The Standardmbean of Jmx Getting Started Helloword

Standard|word


This simple Mbean has only one attribute and one method, Stardbeandemomain for the calling class, and the following three methods are called in the Main method, with detailed comments in the code: Sbean.doregistbean ();        Sbean.domanagebean (); Sbean.reghtmladaptor ();

After running, you can see the information that the console prints, register Standmbean sucess. Attribute:state-init valueattribute:state 2-new statemy service start ....

Because the Htmladaptor service is started, the program is always running, and (Htmladaptor is one of the adapters that Sun JMX implements) the test can be accessed in the browser: http://localhost:8082 You can manage the MBean in the browser, and by pressing the StartService button under the list of MBean operations, you can see the information that the console is playing, indicating that the StartService method was invoked.



/** * Mbean Interface * Standbeanmbean.java * @author ZMXJ */public interface Standbeanmbean {public String getState ();        public void SetState (String s); public void StartService ();}



/** * Mbean Implementation * Standbean.java * @author ZMXJ */public class Standbean implements Standbeanmbean {

Private String state = "init value";

Public String GetState () {return state; }

public void SetState (String s) {state = S; }

public void StartService () {System.out.println ("My service start ..."); }

}

Import Javax.management.attribute;import Javax.management.attributenotfoundexception;import Javax.management.instancenotfoundexception;import Javax.management.invalidattributevalueexception;import Javax.management.mbeanexception;import Javax.management.mbeanserver;import javax.management.MBeanServerFactory; Import Javax.management.malformedobjectnameexception;import Javax.management.objectname;import Javax.management.ReflectionException;

Import Com.sun.jdmk.comm.HtmlAdaptorServer;

/** * Agent class * Stardbeandemomain.java * @author ZMXJ */public class Stardbeandemomain {

    private Mbeanserver mbserver = null;        objectname Mbeanobjectname = null; string Domain = null; string mbeanname = "Standbean";     public static void Main (string[] args) {                 Stardbeandemomain Sbean = new Stardbeandemomain ();                 Sbean.doregistbean ();        Sbean.domanagebean ();        sbean.reghtmladaptor ();   }        /**     * Create mbeanserver and register a mbean      */    private void Doregistbean ()     {        //create mbeanserver        Mbserver = Mbeanserverfactory.creatembeanserver () ;         domain = Mbserver.getdefaultdomain ();

     try {         mbeanobjectname = new objectname (domain + ": Type= "+ mbeanname);                 /*         //Here you can create and register an Mbean to mbeanserver.          Server.creatembean (mbeanname,mbeanobjectname);         */                   standbean bean = new Standbean ();          Mbserver.registermbean (Bean, mbeanobjectname);                   System.out.println ("Register Standmbean sucess ...");     &nbsp} catch (Malformedobjectnameexception e) {         E.printstacktrace ();         system.exit (1);     &NBSP} catch (Exception e) {         e.printstacktrace ();         system.exit (1);     }        }



* * Demo admin Mbean, through Mbserver modify Mbean properties and execute Mbean method * * private void Domanagebean () {try {Obje                                   Ctname mbeanobjectname = new objectname (domain + ": type=" + mbeanname); System.out.println ("Attribute:state-" +mbserver.getattribute (Mbeanobjectname, "State"));

           //Modify Properties state             attribute Stateattribute = new Attribute ("state", "new state");             Mbserver.setattribute (Mbeanobjectname, Stateattribute);                         //Get property value             System.out.println ("Attribute:state 2-" +mbserver.getattribute (Mbeanobjectname, "State"));                         //Call method startservice            MBserver.invoke ( Mbeanobjectname, "StartService", Null,null);                   } catch (Exception e) {            E.printstacktrace ();       }   }        /*     * Registration Htmladaptor, after registration can be performed via http://localhost:8082 Mbean management operations       */    private void Reghtmladaptor ()     {      Htmladaptorserver html = new Htmladaptorserver ();     objectname html_name = null;      try {         html_name = new ObjectName ("adaptor:name=html,port=8082 ");         Mbserver.registermbean (HTML, html_name);     } catch (Exception e) {         System.out.println ("\ t!!! Could not create the HTML adaptor!!! ");          e.printstacktrace ();      &NBsp;  return;     }     html.start ();    }}