eclipse不能启动tomcat，提示： Several ports (8005, 8080, 8009) required by Tomcat v9.0 Server at local

eclipse启动tomcat时，提示： 
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 

解决： 
进入本地tomcat的安装目录找到 tomcat安装目录/conf/server.xml 
编辑，把8005, 8080, 8009全部改为8885, 8888, 8889，再重启Tomcat