Expected MultipartHttpServletRequest: is a MultipartResolver configured?

出现这种异常就是在配置spring mvc文件上传解析器时id名不是 multipartResolver

<!--文件上传解析器 id 为 multipartResolver-->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
    <property name="defaultEncoding" value="UTF-8"/>
    <property name="maxUploadSize" value="5242880"/>
</bean>