错误信息：Several ports (8005, 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).
原因：重复启动tomcat服务器
解决办法：到tomcat安装目录bin文件夹中执行“shutdown.sh”程序关闭服务器。