连接服务器JMX，远程和本地代码不同

远程：

String jmxURL = "service:jmx:rmi:///jndi/rmi://192.168.10.93:8999/jmxrmi";
JMXServiceURL serviceURL = new JMXServiceURL(jmxURL); 
Map map = new HashMap(); 
String[] credentials = new String[] { "monitorRole" , "QED" }; 
map.put("jmx.remote.credentials", credentials); 
JMXConnector connector = JMXConnectorFactory.connect(serviceURL, map); 
MBeanServerConnection  mbsc = connector.getMBeanServerConnection(); 
//堆使用率 
ObjectName heapObjName = new ObjectName("java.lang:type=Memory"); 
MemoryUsage heapMemoryUsage =  MemoryUsage.from((CompositeDataSupport)mbsc.getAttribute(heapObjName, "HeapMemoryUsage")); 
long maxMemory = heapMemoryUsage.getMax();//堆最大 
long commitMemory = heapMemoryUsage.getCommitted();//堆当前分配 
long usedMemory = heapMemoryUsage.getUsed();             

本地：
List<MBeanServer> mBeanServers = MBeanServerFactory.findMBeanServer(null);
ClassLoadingMXBean classBean = ManagementFactory.getClassLoadingMXBean();
MemoryMXBean mxBean = ManagementFactory.getMemoryMXBean();
OperatingSystemMXBean osMBean = ManagementFactory.getOperatingSystemMXBean();
ThreadMXBean thrBean = ManagementFactory.getThreadMXBean();

即直接用 MBeanServerFactory 获取MBean.
若使用远程一样的方法，用localhost连接jmx再包装发布在jmx中，会连不上