mvc 上传文件 MultipartFile参数对像为空

Question

这是 jsp代码

<form:form id="inputForm" modelAttribute="mbSchoolInfo" action="${ctx}/mbschool/mbSchoolInfo/save" method="post" class="form-horizontal" enctype="multipart/form-data">
    <div class="control-group">
        <label class="control-label">上传文件：</label>
        <div class="controls">
            <form:input path="files" name="file" type="file"/>
        </div>
    </div>  
</form:form>

这是 controller 代码

@RequiresPermissions("mbschool:mbSchoolInfo:edit")
@RequestMapping(value = "save" ,method=RequestMethod.POST)
public String save(MultipartFile file,HttpServletRequest request,MbSchoolInfo mbSchoolInfo, Model model, RedirectAttributes redirectAttributes) {
}

还有配置

<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">  
    <property name="maxUploadSize" value="${web.maxUploadSize}" />  
</bean>

Answer 1

。。怎么看着像jeesite？