问题：Error was Port already in use: 40001
1. netstat -ano|findstr "40001"
TCP 127.0.0.1:14043 127.0.0.1:40001 CLOSE_WAIT 12644 TCP 127.0.0.1:40001 0.0.0.0:0 LISTENING 15400 TCP 127.0.0.1:40001 127.0.0.1:14043 FIN_WAIT_2 15400
2. tasklist |findstr "15400"
Dict.exe 15400 Console 2 43,316 K
把dict.exe关掉就OK了。