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After mysqld.exe runs, the task manager does not have this process, and port 3306 is not occupied.
Start-run -cmd, enter netstat -ano, look at the first column, followed by the port, find 80, and remember the corresponding PID! !

Then open the task manager to view-> Select column-> Check PID (process identifier)-> of course

Find the PID process in the task manager, check what program occupies the port, and close it! ! ! Ask, but the process shown in 4896 is that there is no response to debugging after tomcat6 is closed.

Tomcat is already running in another process. Open it again and it will repeat. Did you run other server programs and start the comcat process ~