创建RMI连接器客户端

Question

我正在尝试连接到MBean服务器。我需要编写JMX客户端应用程序。这是用于客户端应用程序的代码。但我有一个例外

检索RMIServer存根失败：javax.naming.ServiceUnavailableException[根异常为java.rmi.ConnectException：连接拒绝主机：localhost；嵌套异常为：

谁能帮我把这个修好。

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 = "localhost";
    public static final String PORT = "1099";


    public static void main(String[] args) throws IOException, MalformedObjectNameException {
        JMXServiceURL url =new JMXServiceURL("service:jmx:rmi:///jndi/rmi://" + HOST + ":" +PORT+ "/jmxrmi");

        JMXConnector jmxConnector = JMXConnectorFactory.connect(url);
        MBeanServerConnection mbeanServerConnection = jmxConnector.getMBeanServerConnection();
        //ObjectName should be same as your MBean name
        ObjectName mbeanName = new ObjectName("ifs.demo1.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();
    }

}

我使用以下参数运行了这段代码。

dcom.sun.management.jmxRemote dcom.sun.management.jmxRemote.port=1099 dcom.sun.management.jmxRemote.authenticate=false dcom.sun.management.jmxRemote.ssl=false

但我有一个例外

Answer 1

您是否注意到您使用的VM参数带有“d”而不是“-d”？还是只是一个错别字？正确的是：

-Dcom.sun.management.jmxremote 
-Dcom.sun.management.jmxremote.port=1099 
-Dcom.sun.management.jmxremote.authenticate=false 
-Dcom.sun.management.jmxremote.ssl=false