spring mvc文件上传报错：Expected MultipartHttpServletRequest: is a MultipartResolver configured?

报错原因：spring-mvc.xml 的配置文件中，配置文件上传id不为 “multipartResolver”

 

 

 解决：id 改为 “multipartResolver”

来源：https://www.cnblogs.com/lcsin/p/11674044.html