SpringMVC无法访问到页面

[anabiosispe]

maven的tomcat插件启动项目，访问localhost:8081，提示404
console报错如下：
http-bio-8081-exec-4] [org.springframework.web.servlet.PageNotFound]-[WARN] No mapping found for HTTP request with URI [/] in DispatcherServlet with name 'taotao-manager-web'

请指教