idea配置spring框架tomcat端口号， port xxxx failed to start. Port 8080 was already in use.

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APPLICATION FAILED TO START
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Description:

The Tomcat connector configured to listen on port 80 failed to start. The port may already be in use or the connector may be misconfigured.

Action:

Verify the connector's configuration, identify and stop any process that's listening on port 80, or configure this application to listen on another port.

端口被占用了，解决方案：1、杀掉占用进程 2、更换端口

1、杀掉占用进程，参考：

https://blog.youkuaiyun.com/q343509740/article/details/80821409

2:、更换端口

这是idea启动项目时，重写了spring.tomcat的参数，还有一种方法，在配置文件中重写：

找到任意*.yml文件，写入server.port=8888，ide会自动格式化