報錯：

Several ports (8005, 8080, 8009) required by Tomcat v9.0 Server at
localhost are already in use. The server may already be running in
another process, or a system process may be using the port. To start
this server you will need to stop the other process or change the port
number(s).

如圖：

解決辦法：

找到任務管理器，點擊詳細信息， 禁用javax.exe進程即可。

總結

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