文件上传到服务器

/**
 * SpringBoot上传文件
 * @param request
 * @param path 文件路径
 * @return
 */
public static Object uploadFile(HttpServletRequest request, String path){
   MultipartHttpServletRequest params=((MultipartHttpServletRequest) request);
   MultiValueMap<String, MultipartFile> filesMap = params.getMultiFileMap();
   List<String> fileNames = new ArrayList<String>();
   JSONObject json = new JSONObject();
   boolean flag = true;
   String errorFile = "";
   ERROR:
   for (String key: filesMap.keySet() ) {
   List<MultipartFile> files =  filesMap.get(key) ;
      for (MultipartFile file  :files
            ) {
         String filename = file.getOriginalFilename();
         String serverFileName =  String.valueOf(new Date().getTime())+ (int)(Math.random()*100)
               +filename.substring(filename.indexOf("."));

         try {
            filename = writeFile(file.getBytes(), path, serverFileName);
            if(StringUtil.isNotEmpty(filename)){
               //导入成功
               fileNames.add(serverFileName);
            }

         } catch (Exception e) {
            flag = false;
            errorFile = filename;
            break ERROR;
         }
      }
   }
   //如果有一个文件失败了，则返回false 已经成功的文件在fileNames（List<String>）内存储，失败的文件在errorFile（String）
   json.put("success",flag);
   json.put("fileNames",fileNames);
   json.put("errorFile",errorFile);
   return json;
}