如何向WebSphere7上的MBean添加NotificationListener。侦听器从未添加到mbean？
我正在尝试添加NotificationListener以侦听来自已注册MBean的通知 通过我的MBean设置，我可以连接到我的WAS7测试环境，并查看/管理我的“HelloMBean”。此外，我还可以通过如何向WebSphere7上的MBean添加NotificationListener。侦听器从未添加到mbean？,websphere,jmx,Websphere,Jmx,我正在尝试添加NotificationListener以侦听来自已注册MBean的通知 通过我的MBean设置，我可以连接到我的WAS7测试环境，并查看/管理我的“HelloMBean”。此外，我还可以通过com.ibm.websphere.management.AdminClient对其调用方法。我创建了一个测试侦听器类： /** * Inner class that will handle the notifications. */ public static c
com.ibm.websphere.management.AdminClient/**
* Inner class that will handle the notifications.
*/
public static class ClientListener implements NotificationListener {
public void handleNotification(Notification notification, Object handback) {
RasMessage rasMessage = (RasMessage) notification.getUserData();
System.out.println("Localized message: " + rasMessage.getLocalizedMessage(null));
System.out.println("\nReceived notification:");
System.out.println("\tClassName: " + notification.getClass().getName());
System.out.println("\tSource: " + notification.getSource());
System.out.println("\tType: " + notification.getType());
System.out.println("\tMessage: " + notification.getMessage());
if (notification instanceof AttributeChangeNotification) {
AttributeChangeNotification acn = (AttributeChangeNotification) notification;
System.out.println("\tAttributeName: " + acn.getAttributeName());
System.out.println("\tAttributeType: " + acn.getAttributeType());
System.out.println("\tNewValue: " + acn.getNewValue());
System.out.println("\tOldValue: " + acn.getOldValue());
}
}
}
- 创建MBean
- 注册MBean（我可以在控制台上看到它）
- 然后，使用正确的ObjectName，我尝试添加三个通知侦听器 不同的方式
ClientListener listener = new ClientListener();
adminClient.addNotificationListenerExtended(objectName, listener, null, null);
adminClient.addNotificationListener(objectName, listener, null, null);
AdminServiceFactory.getMBeanFactory().getMBeanServer().addNotificationListener(MBeanServerDelegate.DELEGATE_NAME, listener, null, null);
public interface HelloMBean extends TUFMBean {
public void addNotificationListener(NotificationListener listener, NotificationFilter filter, Object handback);
public abstract String getName();
public abstract int getCacheSize();
public abstract void setCacheSize(int size);
public abstract void sayHello();
public abstract int add(int x, int y);
public abstract MBeanNotificationInfo[] getNotificationInfo();
public String getIdentification();
public void initialize(Object paramObject);
package cat.dcs.core.services.mbean;
import javax.management.AttributeChangeNotification;
import javax.management.MBeanNotificationInfo;
import javax.management.Notification;
import javax.management.NotificationBroadcasterSupport;
import javax.management.NotificationFilter;
import javax.management.NotificationListener;
import junitx.util.PrivateAccessor;
public class HelloNotificationImpl extends NotificationBroadcasterSupport implements HelloMBean {
private String name = "HelloMBean";
private int cacheSize = DEFAULT_CACHE_SIZE;
private static final int DEFAULT_CACHE_SIZE = 200;
private long sequenceNumber = 1;
public HelloNotificationImpl() {
System.out.println(">>>>> CONSTRUCTOR " + this);
}
/*
* ***************************************************
* TUFMBeanImpl req's
* ***************************************************
*/
public HelloNotificationImpl(String paramString) {
setIdentification(paramString);
}
private void setIdentification(String paramString) {
name = paramString;
}
@Override
public String getIdentification() {
System.out.println(">>>>> getIdentification " + this);
return name;
}
@Override
public void initialize(Object paramObject) {
System.out.println(">>>>> INIT "+ this);
}
@Override
public void addNotificationListener(NotificationListener listener, NotificationFilter filter, Object handback) {
System.out.println(">>>>> ADD NOTIFICATION LISTENER " + this);
super.addNotificationListener(listener, filter, handback);
try {
System.out.println(PrivateAccessor.getField(this, "listenerList"));
} catch (NoSuchFieldException e) {
e.printStackTrace();
}
}
/*
* ***************************************************
* notification broadcaster use
* ***************************************************
*/
/**
* TODO Update method documentation for Hello.setCacheSize Description of the method.
*
* @param size
* @see cat.cis.junk.x#setCacheSize(int)
* @since 1.0 Jul 5, 2012 9:40:01 AM DudekTA
*/
public synchronized void setCacheSize(int size) {
System.out.println(">>>>> SET CACHE SIZE ON"+ this);
int oldSize = cacheSize;
cacheSize = size;
System.out.println("Cache size now " + cacheSize);
Notification n = new AttributeChangeNotification(this, sequenceNumber++, System.currentTimeMillis(),
"CacheSize changed", "CacheSize", "int", oldSize, cacheSize);
try {
System.out.println(">>>LISTENER LIST ON MBEAN: " + PrivateAccessor.getField(this, "listenerList"));
} catch (NoSuchFieldException e) {
e.printStackTrace();
}
sendNotification(n);
}
/**
* TODO Update method documentation for Hello.getNotificationInfo Description of the method.
*
* @return
* @since 1.0 Jul 5, 2012 9:40:01 AM DudekTA
*/
@Override
public MBeanNotificationInfo[] getNotificationInfo() {
String[] types = new String[] { AttributeChangeNotification.ATTRIBUTE_CHANGE };
String name = AttributeChangeNotification.class.getName();
String description = "An attribute of this MBean has changed";
MBeanNotificationInfo info = new MBeanNotificationInfo(types, name, description);
return new MBeanNotificationInfo[] { info };
}
/*
* ***************************************************
* test methods
* ***************************************************
*/
/**
* TODO Update method documentation for Hello.sayHello Description of the method.
*
* @see cat.cis.junk.x#sayHello()
* @since 1.0 Jul 5, 2012 9:40:01 AM DudekTA
*/
public void sayHello() {
System.out.println("hello, world : " + this);
}
/**
* TODO Update method documentation for Hello.add Description of the method.
*
* @param x
* @param y
* @return
* @see cat.cis.junk.x#add(int, int)
* @since 1.0 Jul 5, 2012 9:40:01 AM DudekTA
*/
public int add(int x, int y) {
return x + y;
}
/**
* TODO Update method documentation for Hello.getName Description of the method.
*
* @return
* @see cat.cis.junk.x#getName()
* @since 1.0 Jul 5, 2012 9:40:01 AM DudekTA
*/
public String getName() {
return name;
}
/**
* TODO Update method documentation for Hello.getCacheSize Description of the method.
*
* @return
* @see cat.cis.junk.x#getCacheSize()
* @since 1.0 Jul 5, 2012 9:40:01 AM DudekTA
*/
public int getCacheSize() {
return cacheSize;
}
}
adminClient.invoke(objectName,"addNotificationListener" ,new Object[]{listener,null, null},new String[]{ "javax.management.NotificationListener","javax.management.NotificationFilter", "java.lang.Object" });
<?xml version="1.0" encoding="UTF-8"?>
委托模式：父级优先 mbean的类加载器和管理客户端在哪里不同？ ：可能更容易阅读：
如果您发布HelloMBean的代码，将会有所帮助。这里有几点建议： 它是实现还是扩展的 确保调用的方法调用
也有可能（不确定WAS）bean必须在描述可以订阅的通知的WAS中发布。。。。结果如何 我将RMI连接更改为SOAP连接，并且可以注册侦听器 我不知道为什么RMI连接允许我对MBean进行操作，但不设置侦听器，而我可以通过使用soap连接的adminclient完成所有操作
我没有很好的理由，但我就是这样修复的。下面是实现。是的，它确实扩展了NotificationBroadcaster支持。您可以看到“setCacheSize”调用sendNotification，但listenerList上没有任何侦听器。正如您所说，似乎没有任何类似于>>>>>>>添加通知侦听器的输出。您是从远程JVM注册侦听器，还是从其他类加载器注册侦听器？AdminClient可能无法完成侦听器注册请求，因为A:侦听器类不可序列化，和/或B:MBean impl的类加载器无法加载侦听器类。这都是相同的jvm。启动时，mbean通过一个隐藏websphere“mbfactory.activateMeban（）”的抽象进行注册。我给听众添加了Serilizable，没有任何进展。好的，到达这里。。。。。您是否扫描了所有WAS日志以查看MBeanServer是否排除了任何异常？更糟糕的是，在创建MBean和侦听器的类加载器时，您能打印出它们吗？试图确定这是否是类路径范围问题。仅供参考，所有内容都会显示在控制台上。我删除了抽象并手动注册了mbean，但这不起作用，所以我知道这不是“activateMBean”的过程。另外，我不知道，但是当我调用：
adminClient.invoke（objectName，“addNotificationListener”，新对象[]{listener，null，null}，n
<attribute name="name" getMethod="getName" type="java.lang.String"
proxyInvokeType="unicall" />
<attribute name="cacheSize" getMethod="getCacheSize" type="int"
setMethod="setCacheSize" proxyInvokeType="unicall" />
<operation name="sayHello" role="operation" type="void"
targetObjectType="objectReference" impact="ACTION" proxyInvokeType="multicall">
<signature>
</signature>
</operation>
<operation name="add" role="operation" type="int"
targetObjectType="objectReference" impact="ACTION" proxyInvokeType="multicall">
<signature>
<parameter name="x" description="x" type="int" />
<parameter name="y" description="x" type="int" />
</signature>
</operation>
<operation name="getNotificationInfo" role="operation" type="javax.management.MBeanNotificationInfo[]"
targetObjectType="objectReference" impact="ACTION" proxyInvokeType="multicall">
<signature>
</signature>
</operation>
<operation name="addNotificationListener" role="operation" type="void"
targetObjectType="objectReference" impact="ACTION" proxyInvokeType="multicall">
<signature>
<!-- javax.management.NotificationListener","javax.management.NotificationFilter", "java.lang.Object -->
<parameter name="listener" description="javax.management.NotificationListener" type="javax.management.NotificationListener" />
<parameter name="filter" description="javax.management.NotificationFilter" type="javax.management.NotificationFilter" />
<parameter name="handback" description="java.lang.Object" type="java.lang.Object" />
</signature>
</operation>
[7/9/12 10:28:08:813 CDT] 00000017 SystemOut O >>>>> CONSTRUCTOR cat.dcs.core.services.mbean.HelloNotificationImpl@7f4c7f4c
[7/9/12 10:28:08:813 CDT] 00000017 SystemOut O >>>>> INIT cat.dcs.core.services.mbean.HelloNotificationImpl@7f4c7f4c
[7/9/12 10:28:08:813 CDT] 00000017 SystemOut O >>>>> getIdentification cat.dcs.core.services.mbean.HelloNotificationImpl@7f4c7f4c
[7/9/12 10:28:08:820 CDT] 00000017 servlet I com.ibm.ws.webcontainer.servlet.ServletWrapper init SRVE0242I: [TestItEAR] [/TestIt] [TUFMBeanInitializerServlet]: Initialization successful.
[7/9/12 10:28:08:824 CDT] 00000017 SystemOut O O1: [WebSphere:name=TestItEAR/TestIt.war/HelloMBean,TUFimpl=cat.dcs.core.services.mbean.HelloNotificationImpl,process=server1,TUFinterface=cat.dcs.core.services.mbean.HelloMBean,TUFtype=APPMBean,platform=dynamicproxy,node=C001460186Node02,version=7.0.0.17,type=HelloMBean,mbeanIdentifier=TestItEAR/TestIt.war/HelloMBean,cell=C001460186Node02Cell,spec=1.0]
[7/9/12 10:28:08:826 CDT] 00000017 SystemOut O >>>>> TRYING TO ADD LISTENER
[7/9/12 10:28:08:826 CDT] 00000017 SystemOut O hello, world : cat.dcs.core.services.mbean.HelloNotificationImpl@7f4c7f4c
[7/9/12 10:28:08:827 CDT] 00000017 SystemOut O >>>> CALLING METHOD WITH NOTIFICATION
[7/9/12 10:28:08:827 CDT] 00000017 SystemOut O >>>>> SET CACHE SIZE ONcat.dcs.core.services.mbean.HelloNotificationImpl@7f4c7f4c
[7/9/12 10:28:08:827 CDT] 00000017 SystemOut O Cache size now 999
[7/9/12 10:28:08:829 CDT] 00000017 SystemOut O >>>LISTENER LIST ON MBEAN: []
[7/9/12 14:00:48:811 CDT] 00000012 SystemOut O >>>>> AC CLASSLOADER IS: