spring 支持文件上传配置

spring 文件上传时遇到错误信息：

Servlet.service() for servlet [springmvc] in context with path [/**] threw exception [Required MultipartFile[] parameter 'photos' is not present] with root cause

org.springframework.web.bind.MissingServletRequestParameterException: Required MultipartFile[] parameter 'photos' is not present

用MultipartFile接收文件需增加配置：

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

<!--可设置上传文件大小限制，1024*200即200k-->

<property name="maxUploadSize" value="204800"/>

</bean>