当我运行SystemConfigClient.java时出现此错误：
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线程“main”中的异常 java.lang.reflect.UndeclaredThrowableException at com.sun.proxy。$ Proxy0.doConfig（未知来源）at com.jmx.SystemConfigClient.main（SystemConfigClient.java:37）引起： javax.management.InstanceNotFoundException：com.jmx：type = SystemConfig 在 com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getMBean（未知 来源）at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getClassLoaderFor（未知 来源）at com.sun.jmx.mbeanserver.JmxMBeanServer.getClassLoaderFor（未知 来源）at javax.management.remote.rmi.RMIConnectionImpl $ 6.run（未知来源） 在java.security.AccessController.doPrivileged（Native Method）at javax.management.remote.rmi.RMIConnectionImpl.getClassLoaderFor（未知 来源）at javax.management.remote.rmi.RMIConnectionImpl.invoke（未知来源） at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method）at sun.reflect.NativeMethodAccessorImpl.invoke（未知来源）at sun.reflect.DelegatingMethodAccessorImpl.invoke（未知来源）at java.lang.reflect.Method.invoke（未知来源）at sun.rmi.server.UnicastServerRef.dispatch（未知来源）at sun.rmi.transport.Transport $ 1.run（未知来源）at sun.rmi.transport.Transport $ 1.run（未知来源）at java.security.AccessController.doPrivileged（Native Method）at sun.rmi.transport.Transport.serviceCall（未知来源）at sun.rmi.transport.tcp.TCPTransport.handleMessages（未知来源）at sun.rmi.transport.tcp.TCPTransport $ ConnectionHandler.run0（未知 来源）at sun.rmi.transport.tcp.TCPTransport $ ConnectionHandler.lambda $运行$ 0（未知 来自java.security.AccessController.doPrivileged（Native Method） at sun.rmi.transport.tcp.TCPTransport $ ConnectionHandler.run（未知 来自）java.util.concurrent.ThreadPoolExecutor.runWorker（未知 来自java.util.concurrent.ThreadPoolExecutor $ Worker.run（未知 来自）java.lang.Thread.run（未知来源）at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer（未知 来源）在sun.rmi.transport.StreamRemoteCall.executeCall（未知 来源）在sun.rmi.server.UnicastRef.invoke（未知来源）at com.sun.jmx.remote.internal.PRef.invoke（未知来源）at javax.management.remote.rmi.RMIConnectionImpl_Stub.invoke（未知 来源）at javax.management.remote.rmi.RMIConnector $ RemoteMBeanServerConnection.invoke（未知 来源）at javax.management.MBeanServerInvocationHandler.invoke（未知来源） ......还有2个
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我的Mbean：
package com.jmx;
public interface SystemConfigMBean {
public void setThreadCount (int noOfThreads);
public int getThreadCount();
public void setSchemaName (String schemaName);
public String getSchemaName();
public String doConfig();
}
这是我的SystemConfig.java：
package com.jmx;
public class SystemConfig implements SystemConfigMBean{
private int threadCount;
private String schemaName;
public SystemConfig(int numThreads, String schema) {
this.threadCount = numThreads;
this.schemaName=schema;
}
@Override
public void setThreadCount(int noOfThreads) {
// TODO Auto-generated method stub
this.threadCount=noOfThreads;
}
@Override
public int getThreadCount() {
// TODO Auto-generated method stub
return this.threadCount;
}
@Override
public void setSchemaName(String schemaName) {
// TODO Auto-generated method stub
this.schemaName= schemaName;
}
@Override
public String getSchemaName() {
// TODO Auto-generated method stub
return this.schemaName;
}
@Override
public String doConfig() {
// TODO Auto-generated method stub
return "No.of Threads="+this.threadCount+" and DB SchemaName"+ this.schemaName;
}
}
这是我的SystemConfigManagement.java文件
package com.jmx;
import java.lang.management.ManagementFactory;
import javax.management.InstanceAlreadyExistsException;
import javax.management.MBeanRegistrationException;
import javax.management.MBeanServer;
import javax.management.MalformedObjectNameException;
import javax.management.NotCompliantMBeanException;
import javax.management.ObjectName;
public class SystemConfigManagement {
private static final int DEFAULT_NO_THREADS=10;
private static final String DEFAULT_SCHEMA="default";
public static void main(String[] args) throws MalformedObjectNameException, InterruptedException, InstanceAlreadyExistsException, MBeanRegistrationException, NotCompliantMBeanException {
//Get the MBean server
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
//register the MBean
SystemConfig mBean = new SystemConfig(DEFAULT_NO_THREADS, DEFAULT_SCHEMA);
ObjectName name = new ObjectName("com.jmx:type=SystemConfig");
mbs.registerMBean(mBean, name);
do{
Thread.sleep(3000);
System.out.println("Thread Count="+mBean.getThreadCount()+":::Schema Name="+mBean.getSchemaName());
}while(mBean.getThreadCount() !=0);
}
}
这是我的SystemConfigClient.java：
package com.jmx;
import java.io.IOException;
import javax.management.MBeanServerConnection;
import javax.management.MBeanServerInvocationHandler;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import javax.management.remote.JMXConnector;
import javax.management.remote.JMXConnectorFactory;
import javax.management.remote.JMXServiceURL;
public class SystemConfigClient {
//public static final String HOST = "10.61.3.171";
//public static final String PORT = "1099";
public static void main (String[] args) throws IOException, MalformedObjectNameException {
JMXServiceURL url = new JMXServiceURL ("service:jmx:rmi:///jndi/rmi://:1099/jmxrmi");
JMXConnector jmxConnector = JMXConnectorFactory.connect(url);
MBeanServerConnection mbeanServerConnection = jmxConnector.getMBeanServerConnection();
//ObjectName should be same as your MBean nam
ObjectName mbeanName = new ObjectName ("com.jmx:type=SystemConfig");
//Get MBean proxy instance that will be used to make calls to registered MBean
SystemConfigMBean mbeanProxy = (SystemConfigMBean) MBeanServerInvocationHandler.newProxyInstance(mbeanServerConnection, mbeanName, SystemConfigMBean.class, true);
//let's make some calls to mbean through proxy and see the results.
System.out.println("current systemConfig::" + mbeanProxy.doConfig());
mbeanProxy.setSchemaName("NEwSchema");
mbeanProxy.setThreadCount(5);
System.out.println("New SystemConfig::" + mbeanProxy.doConfig());
//let's terminate the mbean by making thread count as 0
mbeanProxy.setThreadCount(0);
//close the connection
jmxConnector.close();
}
}