Java Can'；无法启动JMXConnectorServer

我想通过JMX远程连接到我的应用程序，所以我在main方法中创建了以下配置：

MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
JMXServiceURL url = new JMXServiceURL("service:jmx:rmi:///jndi/rmi://localhost:7890/jmxrmi");
Map<String, Object> envConf = new HashMap<>();
//My custom authenticator
envConf.put(JMXConnectorServer.AUTHENTICATOR, new MyAuthenticator(jmxUsername, jmxPassword));
JMXConnectorServer cs = JMXConnectorServerFactory.newJMXConnectorServer(url, envConf, mbs);
cs.start();

但似乎缺少了什么，我得到了以下例外：

Cannot bind to URL [rmi://localhost:7890/jmxrmi]: javax.naming.NoPermissionException [Root exception is java.rmi.ServerException: RemoteException occurred in server thread; nested exception is: 
    java.rmi.AccessException: Cannot modify this registry]
java.io.IOException: Cannot bind to URL [rmi://localhost:7890/jmxrmi]: javax.naming.NoPermissionException [Root exception is java.rmi.ServerException: RemoteException occurred in server thread; nested exception is: 
    java.rmi.AccessException: Cannot modify this registry]
    at javax.management.remote.rmi.RMIConnectorServer.newIOException(RMIConnectorServer.java:827)
    at javax.management.remote.rmi.RMIConnectorServer.start(RMIConnectorServer.java:432)
    at test.jms.Main.start(JmxModule.java:35)
Caused by: javax.naming.NoPermissionException [Root exception is java.rmi.ServerException: RemoteException occurred in server thread; nested exception is: 
    java.rmi.AccessException: Cannot modify this registry]
    at com.sun.jndi.rmi.registry.RegistryContext.bind(RegistryContext.java:147)
    at com.sun.jndi.toolkit.url.GenericURLContext.bind(GenericURLContext.java:228)
    at javax.naming.InitialContext.bind(InitialContext.java:425)
    at javax.management.remote.rmi.RMIConnectorServer.bind(RMIConnectorServer.java:644)
    at javax.management.remote.rmi.RMIConnectorServer.start(RMIConnectorServer.java:427)
    ... 4 more
Caused by: java.rmi.ServerException: RemoteException occurred in server thread; nested exception is: 
    java.rmi.AccessException: Cannot modify this registry
    at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:420)
    at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:268)
    at sun.rmi.transport.Transport$1.run(Transport.java:200)
    at sun.rmi.transport.Transport$1.run(Transport.java:197)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
    at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568)
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826)
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$254(TCPTransport.java:683)
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$$Lambda$13/8098086.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
    at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:276)
    at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:253)
    at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:379)
    at sun.rmi.registry.RegistryImpl_Stub.bind(Unknown Source)
    at com.sun.jndi.rmi.registry.RegistryContext.bind(RegistryContext.java:141)
    ... 8 more
Caused by: java.rmi.AccessException: Cannot modify this registry
    at sun.management.jmxremote.SingleEntryRegistry.bind(SingleEntryRegistry.java:76)
    at sun.rmi.registry.RegistryImpl_Skel.dispatch(Unknown Source)
    at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:410)
    at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:268)
    at sun.rmi.transport.Transport$1.run(Transport.java:200)
    at sun.rmi.transport.Transport$1.run(Transport.java:197)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
    at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568)
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826)
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$254(TCPTransport.java:683)
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$$Lambda$13/8098086.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

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您能告诉我哪里错了吗？

通过使用 java-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=7890 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false 主要

您正在端口7890上启动默认的RMI JMX连接器。您尝试在同一端口上启动自定义连接器，但失败

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如果要使用自己的连接器实例，可以安全地省略所有-Dcom.sun.management.jmxremote.属性。

问题是我没有运行RMI注册表，所以只需在控制台中运行以下命令：

rmiregistry

或在服务器启动之前添加这行代码：

LocateRegistry.createRegistry(1099);

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解决了一个问题。

下面是JDK 1.8从和扩展而来的一个最简单的工作示例

链接中代码中缺少的关键步骤和可接受的答案如下：

LocateReigstry.createRegistry（端口）

Thread.sleep（）循环以确保应用程序不会关闭

答案并没有描述MyAuthenticator。我的答案使用默认验证器，该验证器期望访问和密码文件的路径

工作代码Main.java：

import javax.management.MBeanServer;
import javax.management.remote.JMXConnectorServer;
import javax.management.remote.JMXConnectorServerFactory;
import javax.management.remote.JMXServiceURL;

import java.lang.management.ManagementFactory;
import java.rmi.registry.LocateRegistry;
import java.util.*;

public class Main {

    public static void main(String[] args) throws Exception {
        if(args.length != 2) {
            throw new IllegalArgumentException("Main <port> <path suffix>"
                            + "\nservice:jmx:rmi:///jndi/rmi://localhost:<port>/<pathsuffix>"
                            );
        }

        int port = Integer.parseInt(args[0]);
        String pathSuffix = args[1];

        LocateRegistry.createRegistry(port);

        MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
        JMXServiceURL url = new JMXServiceURL("service:jmx:rmi:///jndi/rmi://0.0.0.0:" + port + "/" + pathSuffix);

        Map<String, Object> envConf = new HashMap<>();
        envConf.put("jmx.remote.x.password.file", "password.properties");
        envConf.put("jmx.remote.x.access.file", "access.properties");

        JMXConnectorServer cs = JMXConnectorServerFactory.newJMXConnectorServer(url, envConf, mbs);
        cs.start();

        while(true) {
            Thread.sleep(1000);
        }
    }

}

jmx.remote.x.password.file的内容：

admin password

我使用（假设8474可用）从maven执行代码：

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在这种情况下，我有另一个例外：

无法绑定到URL[rmi://localhost:7890/jmxrmi]：javax.naming.ServiceUnavailableException[根异常为java.rmi.ConnectException:拒绝连接主机：localhost；嵌套异常为：java.net.ConnectException:拒绝连接：connect]

。端口未关闭且未被防火墙阻止通常情况下，人们应使用此解决方案。您不应该自己启动JMX服务器。但是，如果您需要某种定制，并且需要自己启动，请查看Oleskii或我的答案。如何运行rmiregistry，或者您在哪里添加了这行代码？

admin readwrite

admin password

javac Main.java
java Main  8474 jmxrmi