3 Replies Latest reply on Jul 20, 2005 9:23 AM by eldiosyeldiablo

    Unable to execute methods on MBean proxy

    eldiosyeldiablo Newbie

      I have implemented a simple MBean and tested it using the JMX Console but I get an error when I try to execute any method programatically from my ejb session.

      The error is

      [STDOUT] java.lang.reflect.UndeclaredThrowableException
      18:39:36,931 INFO [STDOUT] at $Proxy57.getDbDriver(Unknown Source)
      18:39:36,932 INFO [STDOUT] at com.relevant.e3.ejb.item.ItemBO.getDbDriverMBean(ItemBO.java:41)
      18:39:36,932 INFO [STDOUT] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      18:39:36,932 INFO [STDOUT] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
      18:39:36,932 INFO [STDOUT] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      18:39:36,932 INFO [STDOUT] at java.lang.reflect.Method.invoke(Method.java:585)
      18:39:36,932 INFO [STDOUT] at com.relevant.e3.ejb.businesscontroller.BusinessController.execute(BusinessController.java:293)
      18:39:36,932 INFO [STDOUT] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      18:39:36,933 INFO [STDOUT] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
      18:39:36,933 INFO [STDOUT] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      18:39:36,933 INFO [STDOUT] at java.lang.reflect.Method.invoke(Method.java:585)
      18:39:36,933 INFO [STDOUT] at org.jboss.invocation.Invocation.performCall(Invocation.java:345)
      18:39:36,933 INFO [STDOUT] at org.jboss.ejb.StatefulSessionContainer$ContainerInterceptor.invoke(StatefulSessionContainer.java:584)
      18:39:36,933 INFO [STDOUT] at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:123)
      18:39:36,933 INFO [STDOUT] at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:185)
      18:39:36,933 INFO [STDOUT] at org.jboss.ejb.plugins.StatefulSessionInstanceInterceptor.invoke(StatefulSessionInstanceInterceptor.java:294)
      18:39:36,933 INFO [STDOUT] at org.jboss.ejb.plugins.CallValidationInterceptor.invoke(CallValidationInterceptor.java:48)
      18:39:36,934 INFO [STDOUT] at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:105)
      18:39:36,934 INFO [STDOUT] at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:313)
      18:39:36,934 INFO [STDOUT] at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:146)
      18:39:36,934 INFO [STDOUT] at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:192)
      18:39:36,934 INFO [STDOUT] at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:122)
      18:39:36,934 INFO [STDOUT] at org.jboss.ejb.SessionContainer.internalInvoke(SessionContainer.java:624)
      18:39:36,934 INFO [STDOUT] at org.jboss.ejb.Container.invoke(Container.java:870)
      18:39:36,934 INFO [STDOUT] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      18:39:36,934 INFO [STDOUT] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
      18:39:36,935 INFO [STDOUT] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      18:39:36,935 INFO [STDOUT] at java.lang.reflect.Method.invoke(Method.java:585)
      18:39:36,935 INFO [STDOUT] at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:144)
      18:39:36,935 INFO [STDOUT] at org.jboss.mx.server.Invocation.dispatch(Invocation.java:80)
      18:39:36,935 INFO [STDOUT] at org.jboss.mx.server.Invocation.invoke(Invocation.java:72)
      18:39:36,935 INFO [STDOUT] at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:249)
      18:39:36,935 INFO [STDOUT] at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:642)
      18:39:36,935 INFO [STDOUT] at org.jboss.invocation.jrmp.server.JRMPInvoker$MBeanServerAction.invoke(JRMPInvoker.java:805)
      18:39:36,935 INFO [STDOUT] at org.jboss.invocation.jrmp.server.JRMPInvoker.invoke(JRMPInvoker.java:406)
      18:39:36,935 INFO [STDOUT] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      18:39:36,936 INFO [STDOUT] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
      18:39:36,936 INFO [STDOUT] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      18:39:36,936 INFO [STDOUT] at java.lang.reflect.Method.invoke(Method.java:585)
      18:39:36,936 INFO [STDOUT] at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:294)
      18:39:36,936 INFO [STDOUT] at sun.rmi.transport.Transport$1.run(Transport.java:153)
      18:39:36,936 INFO [STDOUT] at java.security.AccessController.doPrivileged(Native Method)
      18:39:36,936 INFO [STDOUT] at sun.rmi.transport.Transport.serviceCall(Transport.java:149)
      18:39:36,936 INFO [STDOUT] at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)
      18:39:36,936 INFO [STDOUT] at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:701)
      18:39:36,937 INFO [STDOUT] at java.lang.Thread.run(Thread.java:595)
      18:39:36,939 INFO [STDOUT] Caused by: javax.management.InstanceNotFoundException: com.relevant:name=E3Settings is not registered.
      18:39:36,939 INFO [STDOUT] at org.jboss.mx.server.registry.BasicMBeanRegistry.get(BasicMBeanRegistry.java:509)
      18:39:36,940 INFO [STDOUT] at org.jboss.mx.server.MBeanServerImpl.getAttribute(MBeanServerImpl.java:533)
      18:39:36,940 INFO [STDOUT] at javax.management.MBeanServerInvocationHandler.invoke(MBeanServerInvocationHandler.java:175)
      18:39:36,940 INFO [STDOUT] ... 46 more
      


      The code to retrieve the MBean reference is

      protected final E3SettingsMBean getServerSettings() {
      
       E3SettingsMBean mbean = null;
      
       //target MBean
       ObjectName objectName = null;
       try {
       objectName = new ObjectName("com.relevant:name=E3Settings");
       } catch (MalformedObjectNameException e) {
       return null;
       }
      
       if (objectName != null) {
       //find the local MBeanServer
      // MBeanServer server = MBeanServerLocator.locateJBoss();
       MBeanServer server = ManagementFactory.getPlatformMBeanServer();
      
       // Get a type-safe dynamic proxy
       mbean =
       (E3SettingsMBean)MBeanServerInvocationHandler.newProxyInstance(
       server,
       objectName,
       E3SettingsMBean.class,
       false);
       // Use the proxy
       String dbURL = mbean.getDbURL();
       mbean.sayHello();
       }
      
       return mbean;
       }


      The MBean interface is
      package com.relevant.e3.ejb.resource;
      
      import org.jboss.system.ServiceMBean;
      
      public interface E3SettingsMBean extends ServiceMBean {
      
       public void sayHello();
       public int add(int x, int y);
      
       public String getDbDriver();
       public void setDbDriver(String driver);
       public String getDbURL();
       public void setDbURL(String url);
       public String getDbUser();
       public void setDbUser(String user);
       public String getDbPassword();
       public void setDbPassword(String password);
      }

      The implementation of the interface is..
      package com.relevant.e3.ejb.resource;
      import javax.management.*;
      
      import org.apache.log4j.Logger;
      import org.jboss.system.ServiceMBeanSupport;
      
      public class E3Settings extends ServiceMBeanSupport
      //public class E3Settings extends NotificationBroadcasterSupport
       implements E3SettingsMBean {
      
       protected static Logger logger;
      
       private static final String DEFAULT_DBDRIVER =
       "net.sourceforge.jtds.jdbc.Driver";
       private String dbDriver = DEFAULT_DBDRIVER;
       private static final String DEFAULT_DBURL =
       "jdbc:jtds:sqlserver://sql2003:1433/patbiz";
       private String dbURL = DEFAULT_DBURL;
       private static final String DEFAULT_DBUSER = "java";
       private String dbUser = DEFAULT_DBUSER;
       private static final String DEFAULT_DBPASSWORD = "java";
       private String dbPassword = DEFAULT_DBPASSWORD;
      
       private String name="E3Settings";
      
       //Used for notifications
       private long sequenceNumber = 1;
      
       public E3Settings() {
       if (logger == null) {
       logger = Logger.getLogger(E3Settings.class);
       }
       }
      
       /**
       * Testing java docs
       * @jmx Testing
       * @jmx.desc Testing jmx.desc
       */
       public void sayHello() {
       System.out.println("hello, world");
       }
      
       public int add(int x, int y) {
       return x + y;
       }
      
       public String getDbDriver() {
       return dbDriver;
       }
      
       /**
       * Sets the database connection string for the MBean.
       * @jmx.desc
       *
       * @param Value to set the database connection string to.
       */
       public synchronized void setDbDriver(String driver) {
       String oldStr = dbDriver;
       dbDriver = driver;
      
      logger.debug("dbDriver now " + dbDriver);
      
       Notification n =
       new AttributeChangeNotification(this,
       sequenceNumber++,
       System.currentTimeMillis(),
       "dbDriver changed",
       "DbDriver",
       "int",
       oldStr,
       dbDriver);
      
       sendNotification(n);
       }
      
       public String getDbURL() {
       return dbURL;
       }
      
       public synchronized void setDbURL(String url) {
       String oldStr = dbURL;
       dbURL = url;
      
      logger.debug("dbURL now " + dbURL);
      
       Notification n =
       new AttributeChangeNotification(this,
       sequenceNumber++,
       System.currentTimeMillis(),
       "dbURL changed",
       "DbURL",
       "int",
       oldStr,
       dbURL);
      
       sendNotification(n);
       }
      
       public String getDbUser() {
       return dbUser;
       }
      
       public synchronized void setDbUser(String user) {
       String oldStr = dbUser;
       dbUser = user;
      
      logger.debug("dbUser now " + dbUser);
      
       Notification n =
       new AttributeChangeNotification(this,
       sequenceNumber++,
       System.currentTimeMillis(),
       "dbUser changed",
       "DbUser",
       "int",
       oldStr,
       dbUser);
      
       sendNotification(n);
       }
      
       public String getDbPassword() {
       return dbPassword;
       }
      
       public synchronized void setDbPassword(String password) {
       String oldStr = dbPassword;
       dbPassword = password;
      
      logger.debug("dbPassword now " + dbPassword);
      
       Notification n =
       new AttributeChangeNotification(this,
       sequenceNumber++,
       System.currentTimeMillis(),
       "dbPassword changed",
       "DbPassword",
       "int",
       oldStr,
       dbPassword);
      
       sendNotification(n);
       }
      
       //The lifecycle
       protected void startService() throws Exception {
       log.info("Starting with message= E3Settings");
       }
       protected void stopService() throws Exception {
       log.info("Stopping with message= E3Settings");
       }
      }


      The jboss-service.xml file is..
      <?xml version="1.0" encoding="UTF-8"?>
      
      <server>
       <mbean code="com.relevant.e3.ejb.resource.E3Settings"
       name="com.relevant:service=E3Settings">
       <!-- A plain attribute -->
       <attribute name="DbDriver">net.sourceforge.jtds.jdbc.Driver</attribute>
       <attribute name="DbURL">jdbc:jtds:sqlserver://sql2003:1433/patbiz</attribute>
       <attribute name="DbUser">java</attribute>
       <attribute name="DbPassword">java</attribute>
       </mbean>
      </server>

      Again sorry for the long post but I'm sure someone would have asked for one of the above files if I had left them out.

      Thank you,
      -David