日志显示为：
Looking up handler method for path /***
Did not find handler method for [/***]
No mapping found for HTTP request with URI [/springMVC/***] in DispatcherServlet with name 'spring'
Successfully completed request
网上很多人的解决方法都无效，最后才找到一个解决方法：
applicationContext.xml 里面不能<context:component-scan /> controller的包,
就是写了的话,那也得把controller的包用context:exclude-filter 去掉
<!-- 扫描注解对象 -->
<context:component-scan base-package="org.fgq.study">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
https://www.oschina.net/question/1015582_125252?sort=default&p=2
更深层的原因未知。spring文档中没有找到线索。