如何以编程方式检查JMX MBean操作和属性？
假设我们有一个具有以下属性和操作的MBean。
属性：名称大小
操作：getName（）getSize（）
有没有办法以编程方式检查属性和操作？ 我一直在使用IBM WebSphere MBeans，他们的文档不是很好。
例如，如果您转到IBM Infocenter并导航到Network Deployment – > Reference – > Programming interfaces – > Mbean interfaces – > ThreadPool。 它们只列出属性而没有操作。
使用WebSphere wsadmin工具，我实际上可以检查以查看操作和属性。 我想知道是否有办法对所有MBean这样做。
wsadmin>print Help.attributes(object) Attribute Type Access name java.lang.String RO maximumSize int RW minimumSize int RW inactivityTimeout long RW growable boolean RW stats javax.management.j2ee.statistics.Stats RO wsadmin>print Help.operations(object) Operation java.lang.String getName() int getMaximumPoolSize() void setMaximumPoolSize(int) int getMinimumPoolSize() void setMinimumPoolSize(int) long getKeepAliveTime() void setKeepAliveTime(long) boolean isGrowAsNeeded() void setGrowAsNeeded(boolean) javax.management.j2ee.statistics.Stats getStats() 我无法确定您是否正在讨论以编程方式从当前JVM内部或从客户端远程查找MBean。 有许多JMX客户端库。 我写的那个可以在这里找到：
使用我的代码，您可以执行以下操作：
JmxClient client = new JmxClient(hostName, port); Set objectNames = getBeanNames() for (ObjectName name : objectNames) { MBeanAttributeInfo[] attributes = getAttributesInfo(name); MBeanOperationInfo[] operations = getOperationsInfo(name); }
如果您询问当前的JVM，那么您应该能够以这种方式从内部bean获取bean信息：
MBeanServer server = ManagementFactory.getPlatformMBeanServer(); Set objectNames = server.queryNames(null, null); for (ObjectName name : objectNames) { MBeanInfo info = server.getMBeanInfo(name); }
这是一个简单的JMX for ActiveMQ的例子。 只需替换activeMQ值，对将来的某些人有用：
String brokerName = "AMQBroker"; String username = ""; String password = ""; String hostname = "localhost"; int port = 1099; Map env = new HashMap(); if (username != null || password != null) { String[] credentials = new String[] { username, password }; env.put("jmx.remote.credentials", credentials); } JMXServiceURL url = new JMXServiceURL("service:jmx:rmi:///jndi/rmi://" + hostname + ":" + port + "/jmxrmi"); JMXConnector jmxc = JMXConnectorFactory.connect(url, env); MBeanServerConnection conn = jmxc.getMBeanServerConnection(); // here is example for Type=Broker, can be different like // "org.apache.activemq:BrokerName=" + brokerName + ",Type=Connection,ConnectorName=openwire,Connection=*" // "org.apache.activemq:BrokerName=" + brokerName + ",*,Type=NetworkBridge" or same for Queue, Topic, Subscription ObjectName name = new ObjectName("org.apache.activemq:BrokerName=" + brokerName + ",Type=Broker"); Set queryNames = conn.queryNames(name, null); // here is set with one element, but can be more depending on ObjectName query for (ObjectName objectName : queryNames) { System.out.println(objectName.getCanonicalName()); // use attribute you can be interested in System.out.println(conn.getAttribute(objectName, "Slave")); }