创建RMI连接器客户端

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 . 但我有一个与此相关的例外

无法检索RMIServer存根：javax.naming.ServiceUnavailableException [根异常是java.rmi.ConnectException：连接拒绝主机：localhost;嵌套异常是：

有人可以帮我解决这个问题 .

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();
    }

}

我用以下参数运行此代码 .

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

但我得到了例外

线程“main”中的异常java.io.IOException：无法检索RMIServer存根：javax.naming.ServiceUnavailableException [根异常是java.rmi.ConnectException：连接拒绝主机：localhost;嵌套异常是：java.net.ConnectException：Connection refused：connect] at javax.management.remote.rmi.RMIConnector.connect（RMIConnector.java:338）at javax.management.remote.JMXConnectorFactory.connect（JMXConnectorFactory.java:248） ）在com.demo1.jmx.SystemConfigClient.main（SystemConfigClient.java:29）的javax.management.remote.JMXConnectorFactory.connect（JMXConnectorFactory.java:207）引起：javax.naming.ServiceUnavailableException [root异常是java.rmi .ConnectException：连接拒绝主机：localhost;嵌套异常是：java.net.ConnectException：Connection refused：connect] at com.sun.jndi.rmi.registry.RegistryContext.lookup（RegistryContext.java:101）at com.sun.jndi.toolkit.url.GenericURLContext.lookup （GenericURLContext.java:185）位于javax.management.remup.r上的javax.management.remote.rmi.RMIConnector.findRMIServerJNDI（RMIConnector.java:1886）的javax.naming.InitialContext.lookup（InitialContext.java:392） . RMIConnector.findRMIServer（RMIConnector.java:1856）at javax.management.remote.rmi.RMIConnector.connect（RMIConnector.java:257）... 3 more引起：java.rmi.ConnectException：连接拒绝主机：localhost;嵌套异常是：java.net.ConnectException：拒绝连接：在sun.rmi.transport.tcp.TCPChannel.createConnection（TCPChannel.java： 198）sun.rmi.transport.tcp.TCPChannel.newConnection（TCPChannel.java:184）at sun.rmi.server.UnicastRef.newCall（UnicastRef.java:322）at sun.rmi.registry.RegistryImpl_Stub.lookup（Unknown）来自）com.sun.jndi.rmi.registry.RegistryContext.lookup（RegistryContext.java：97）... 8更多引起：java.net.ConnectException：连接被拒绝：连接java.net.PlainSocketImpl.socketConnect（ java.net.PlainSocket上的java.net.PlainSocketImpl.connectToAddress（PlainSocketImpl.java：195）中java.net.PlainSocketImpl.connect（PlainSocketImpl.java:182）的java.net.PlainSocketImpl.doConnect（PlainSocketImpl.java:333）中的Native Method） .net.SocksSocketImpl.connect（SocksSocketImpl.java：366），java.net.Socket.connect（Socket.java：529），java.net.Socket.connect（Socket.java:478），java.net.Socket . （Socket.java:3 75）at java..Socket . （Socket.java:189）at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket（RMIDirectSocketFactory.java:22）at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket（RMIMasterSocketFactory . java：128）at sun.rmi.transport.tcp.TCPEndpoint.newSocket（TCPEndpoint.java:595）... 13更多Java结果：1