Tomcat启动出错and端口占用等问题

这个小视频介绍得很详细，可以看看

https://www.bilibili.com/video/BV1J4411877m?p=222

 

"Error running 'Tomcat 9.0.43': Address localhost:8080 is already is use"

端口占用问题，参考

https://blog.csdn.net/eagleuniversityeye/article/details/79985027