The reason for this exception is that the server port is occupied, so the solution is as follows:
1. CMD enters the command line to check whether the port is occupied
Use command: netstat – ANO
C:\Users\admin> netstat -ano
Protocol local address external address status PID
TCP 0.0.0.0:8009 0.0.0.0:0 LISTENING 1256
TCP 0.0.0.0:8080 0.0.0.0:0 LISTENING 5500
2. execute tasklist | findstr “5500” command under CMD to query which program is occupied
C:\Users\admin> tasklist|findstr “5500”
javaw.exe 1256 Console 1 81,864 K