[Solved] SpringBoot Startup Error: Description:Web server failed to start. Port 9090 was already in use.(win10)

1. Error reporting picture:

2. Win + R, enter CMD, find the port,

Invalid instruction

Valid instruction

3. End the process of occupying the port. The occupied process here is 25588

(1) open the Task Manager and click the details option

(2) Find Java.exe with PID 25588 in the name of java.exe

(3) Right click to end the task -> End process

4. Start springboot again to see if it is resolved.

Successfully started, solved.

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