启动异常：

2018-08-31 10:39:21.722  INFO 9872 --- [nio-8030-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring FrameworkServlet 'dispatcherServlet'
2018-08-31 10:39:21.722  INFO 9872 --- [nio-8030-exec-1] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization started
2018-08-31 10:39:21.822  INFO 9872 --- [nio-8030-exec-1] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization completed in 100 ms

访问异常：

Whitelabel Error Page

This application has no explicit mapping for /error, so you are seeing this as a fallback.

Fri Aug 31 10:39:21 CST 2018

There was an unexpected error (type=Not Found, status=404).

No message available