spring上传文件报错Expected MultipartHttpServletRequest: is a MultipartResolver configured?

multipartResolver未配置或名称配置错误:

正确配置:

  <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">  

        <property name="defaultEncoding" value="utf-8"></property>   

        <property name="maxUploadSize" value="10485760000"></property>  

        <property name="maxInMemorySize" value="40960"></property>  

   </bean> 

导入上传相关jar包:commons-fileupload-1.3.1.jar