现象dubbo服务的默认端口是20880，按照网上教程想查看dubbo服务，报错telnet127.0.0.120880dubbo>lsDubboTelnetUnsupportedcommand:ls原因PleaseusethespecificQOSportforQOScommands,bydefaultis 22222从dubbo2.5.8开始，引入了QoS模块，别问我QoS啥意思，我查