spring上传文件（request未被CommonsMultipartResolver处理）

/** * @Description:  * @param request * @param nameParam:要获取的表单的file名 * @Return: String */public static HashMap<String,Object> uploadFileWidthLimit(HttpServletRequest request, String nameParam){String fileUrl = "";boolean isFail= false;String errMsg = "";try{//获取上传文件的类型img,flash,fileString type = request.getParameter("type");CommonsMultipartResolver commonsMultipartResolver = new CommonsMultipartResolver(request.getSession().getServletContext());//根据type类型获取限制上传的大小，单位字节long limit = UtilConfig.getLong(type+".limit", 1024*1024);commonsMultipartResolver.setMaxUploadSize(limit);MultipartHttpServletRequest multipartRequest =  commonsMultipartResolver.resolveMultipart(request);//文件存储路径String currentPath = Constants.NEWS_UPLOADPATH+"/"+type;String currentDirPath = request.getServletContext().getRealPath(currentPath);// 将路径前加上web应用名currentPath = request.getContextPath()+"/" + currentPath;logger.debug("currentPath>>>>>>{}",currentPath);logger.debug("currentDirPath>>>{}",currentDirPath);MultipartFile file = multipartRequest.getFile(nameParam);String fileName = file.getOriginalFilename();logger.debug("fileName>>>>{}",fileName);// 获取文件扩展名String ext = fileName.substring(fileName.lastIndexOf(".") + 1);//检测扩展名是否合法ArrayList allowList = (ArrayList) allowedExtensions.get(type);if(allowList.contains(ext)){fileName = UtilDate.formatDateTime2()+ RandomStringUtil.getRandomNum(3)+ fileName.substring(fileName.lastIndexOf("."));File pathToSave = new File(currentDirPath,fileName);if(!pathToSave.exists())pathToSave.mkdirs();fileUrl = currentPath + "/" + fileName;file.transferTo(pathToSave);}else {isFail = true;errMsg="无效的文件类型： ";}}catch(Exception ex){ex.printStackTrace();isFail = true;errMsg="未知错误！";}HashMap<String,Object> map = new HashMap();map.put("isFail", isFail);map.put("errMsg", errMsg);map.put("fileUrl", fileUrl);logger.debug("isFail>>>{}",isFail);logger.debug("errMsg>>>>{}",errMsg);logger.debug("fileUrl>>>{}",fileUrl);return map;}

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