Spring MVC 文件上传

转： http://www.bitiliu.com/archives/33

 

我在关注点二出了问题： 未添加  ENCTYPE="multipart/form-data"

 

关注点一：文件上传的代码很简单：

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@RequestMapping(value = "/attachment/upload", method = RequestMethod.POST) public String upload(ModelMap model, HttpServletRequest request, HttpServletResponse response) { MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request; MultipartFile attachmentFile = multipartRequest.getFile("attachment"); //.... }

关注点二：form表单也指定了enctype：

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<form method="post" action="/attachment/upload.do" ENCTYPE="multipart/form-data"> <input type="file" name="attachment" ><br/> <input type="submit"> </form>

关注点三：上传的时候却抛入如下的异常：

1	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：

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<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>

Posted by bitiliu at 下午