Mac 查看端口占用情况

前言

由于意外导致IDEA退出，之后重新启动服务发现端口被占用，错误提示如下

??: ????????: java.rmi.server.ExportException: Port already in use: 1099; nested exception is: 
    java.net.BindException: Address already in use (Bind failed)
sun.management.AgentConfigurationError: java.rmi.server.ExportException: Port already in use: 1099; nested exception is: 
    java.net.BindException: Address already in use (Bind failed)
    at sun.management.jmxremote.ConnectorBootstrap.startRemoteConnectorServer(ConnectorBootstrap.java:480)
    at sun.management.Agent.startAgent(Agent.java:262)
    at sun.management.Agent.startAgent(Agent.java:452)
Caused by: java.rmi.server.ExportException: Port already in use: 1099; nested exception is: 
    java.net.BindException: Address already in use (Bind failed)
    at sun.rmi.transport.tcp.TCPTransport.listen(TCPTransport.java:346)
    at sun.rmi.transport.tcp.TCPTransport.exportObject(TCPTransport.java:254)
    at sun.rmi.transport.tcp.TCPEndpoint.exportObject(TCPEndpoint.java:411)
    at sun.rmi.transport.LiveRef.exportObject(LiveRef.java:147)
    at sun.rmi.server.UnicastServerRef.exportObject(UnicastServerRef.java:237)
    at sun.rmi.registry.RegistryImpl.setup(RegistryImpl.java:213)
    at sun.rmi.registry.RegistryImpl.<init>(RegistryImpl.java:173)
    at sun.management.jmxremote.SingleEntryRegistry.<init>(SingleEntryRegistry.java:49)
    at sun.management.jmxremote.ConnectorBootstrap.exportMBeanServer(ConnectorBootstrap.java:816)
    at sun.management.jmxremote.ConnectorBootstrap.startRemoteConnectorServer(ConnectorBootstrap.java:468)
    ... 2 more
Caused by: java.net.BindException: Address already in use (Bind failed)
    at java.net.PlainSocketImpl.socketBind(Native Method)
    at java.net.AbstractPlainSocketImpl.bind(AbstractPlainSocketImpl.java:387)
    at java.net.ServerSocket.bind(ServerSocket.java:375)
    at java.net.ServerSocket.<init>(ServerSocket.java:237)
    at java.net.ServerSocket.<init>(ServerSocket.java:128)
    at sun.rmi.transport.proxy.RMIDirectSocketFactory.createServerSocket(RMIDirectSocketFactory.java:45)
    at sun.rmi.transport.proxy.RMIMasterSocketFactory.createServerSocket(RMIMasterSocketFactory.java:345)
    at sun.rmi.transport.tcp.TCPEndpoint.newServerSocket(TCPEndpoint.java:666)
    at sun.rmi.transport.tcp.TCPTransport.listen(TCPTransport.java:335)
    ... 11 more
Disconnected from server
Disconnected from the target VM, address: '127.0.0.1:65034', transport: 'socket'

解决方案

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