How to close the dos command when the port is occupied

1. Use netstat-aon|findser "port number"          to view the port number occupied by which application process number
2. Use tasklist|findstr "application process number"   to view the application with the process number, then you can use the application manager or dos command to close
3. Kill the process with taskkill /pid process 　　                ID

For example, to solve the problem that port "8090" is occupied, see the figure below

Then other programs can use this port

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