mac Tomcat v7.0 Server at localhost are already in use

mac下的Eclipse中内置的Tomcat，启动时报一下错误：

Several ports (8080, 8009) required by Tomcat v7.0 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 or change the port number(s).

解决办法： 
打开终端，输入以下命令

lsof -i :8080
1
1

如果你被占用的端口不是8080，请修改命令中的参数。 
该命令输出以下内容：

COMMAND   PID     USER   FD   TYPE             DEVICE SIZE/OFF NODE NAMEjava    27132    kaige   41u  IPv6 0x9d80e4a27fc1081b      0t0  TCP *:http-alt (LISTEN)
1
2
1
2

我的Mac上占用8080端口的进程ID是27132，所以我再将这个进程杀死

kill -9 27132
1
1

请根据你的进程ID来修改次命令的最后一个参数

然后再次启动Eclipse中的Tomcat，可以正常启动了！