Several ports (8005, 8080, 8009) required by Tomcat v8.5 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).
最近调项目，发布到Tomcat显示错误，
这个错误显示端口8005,8080,8009被占用，有两种解决方案：
一、打开项目管理器，找到javaw.exe,点击结束进程，再重启就OK了。
二、找到安装Tomcat的安装目录
apache-tomcat-8.5.37\conf底下的server.xml配置文件，修改如下端口号：
改为8015
改为8088
改为8019