报错信息：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).
突然在eclipse中启动不了Tomcat了，报错原因是端口(8005, 8080, 8009)被占用了，想起来上一次用完eclipse没有关Tomcat就直接退出了。
解决方式也很粗暴：直接在windows任务管理器里面找到javaw.exe，结束进程。
方法参考自博客：https://blog.csdn.net/xinxin19881112/article/details/6148507