$ sudo lsof -i -n -P | grep 8080
java 17957 fanguangjian 34u IPv6 0xa9c84c1aa70df083 0t0 TCP *:8080 (LISTEN)
$ sudo kill -9 17957
$ sudo lsof -i -n -P | grep 8080
java 17957 fanguangjian 34u IPv6 0xa9c84c1aa70df083 0t0 TCP *:8080 (LISTEN)
$ sudo kill -9 17957