Unable to open debugger port (127.0.0.1:5471): java.net.SocketException "socket closed"

如果tomcat的server.xml这段代码被注释了，就会报错：所以打开注释或者直接复制一份就可以了

<Connector port="8443" protocol="org.apache.coyote.http11.Http11NioProtocol"
               maxThreads="150" SSLEnabled="true">
        <SSLHostConfig>
            <Certificate certificateKeystoreFile="conf/localhost-rsa.jks"
                         type="RSA" />
        </SSLHostConfig>
</Connector>