Spring MVC 警告: No mapping found for HTTP request with URI [/SpringMVCProject/hello.from] in DispatcherServlet with name 'spring'

异常描述:

　　访问地址:http://127.0.0.1:8967/SpringMVCProject/hello.from

　　控制台打印错误:

　　　　警告: No mapping found for HTTP request with URI [/SpringMVCProject/hello.from] in DispatcherServlet with name 'spring'

　　　　

　　浏览器异常:

　　　　

异常处理:

　　

　　需要加上请求的后缀.