Port 8080 required by Apache Tomcat v7.0 (2) at localhost is 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).
报上面这个错误，一番查看没发现哪里使用该端口
用以下方法查询8080端口在哪使用
最终发现是hbuilder x中的预览占用了8080端口，关闭预览，再打开tomcat即可
