Server Tomcat v7.0 Server at localhost was unable to start within 45 seconds.
在重新运行之前的项目时，运行项目出现了这个tomcat小问题。
Server Tomcat v7.0 Server at localhost was unable to start within 45 seconds. If the server requires more time, try increasing the timeout in the server editor.
经过一番分析加上道友分享的经验，终于解决了。
先在Window -> Show View -> Servers
双击Servers进入
将45修改为75即可
保存重新运行，问题就解决了