Spring MVC中文件上传时的异常HttpRequest -> MultipartHttpServletRequest ClassCastException
@RequestMapping(value="/attachment/upload", method = RequestMethod.POST)publicString upload(ModelMap model, HttpServletRequest request, HttpServletResponse response){MultipartHttpServletRequest multipartRequest =(MultipartHttpServletRequest) request;MultipartFile attachmentFile = multipartRequest.getFile("attachment");//....}
form表单也指定了enctype：
<form method="post" action="/attachment/upload.do" ENCTYPE="multipart/form-data">
<input type="file" name="attachment" ><br/>
<input type="submit">
</form>
上传的时候却抛入如下的异常：
java.lang.ClassCastException: com.caucho.server.http.HttpRequest cannot be cast to org.springframework.web.multipart.MultipartHttpServletRequest
原因很简单，我没有配置multipartResolver：
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- one of the properties available; the maximum file size in bytes -->
<property name="maxUploadSize" value="10240000"/>
</bean>
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