1、具体报错如下：
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.
2、截图如下：
3、解决办法
<Connector connectionTimeout="20000" port="8086" protocol="HTTP/1.1" redirectPort="8443"/>
修改为：
<Connector connectionTimeout="100000" port="8086" protocol="HTTP/1.1" redirectPort="8443"/>