1. Win+R to open Run, enter cmd to open the command line window.
2. Assuming that you want to query the occupancy of port 8080, enter in the command line: netstat -aon|findstr "8080"
3. Get the process number 2996, continue to enter the command: tasklist|findstr "2996"
4. Get the process image name TNSLSNR.EXE
5. Ctrl + Alt + delete Open the task manager, find the process named TNSLSNR.EXE, right-click, and end the process.
6. In this way, the problem that the port is occupied is solved.