• 上傳文件*/
  @RequestMapping("/onefile")
  br/>*/
  @RequestMapping("/onefile")
  HttpServletRequest request, Model model, AAccidentManagement management)
  

  {

  // 傳入一個事故ID
  String accidentID = request.getParameter("accidentID");
  accidentID = "00520180509002";
  if (StringUtils.isEmpty(accidentID))
  {
      model.addAttribute("msg", "事故ID為空");
      model.addAttribute("code", 1);
      return model;
  }
  if (file == null)
  {
      model.addAttribute("msg", "上傳失敗：文件為空");
      model.addAttribute("code", 111);
      return model;
  }
  
  // 獲得原始文件名
  String fileName = file.getOriginalFilename();
  System.out.println("原文件名:" + fileName);
  
  // 獲取上傳文件擴展名
  String fileExt = fileName.substring(fileName.lastIndexOf(".") + 1, fileName.length());
  // 對擴展名進行小寫轉換
  fileExt = fileExt.toLowerCase();
  // 圖片文件大小過濾
  if (!"jpg".equals(fileExt) && !"png".equals(fileExt) && !"mp4".equals(fileExt))
  {
      model.addAttribute("msg", "上傳失敗:無效的圖片/視頻類型");
      model.addAttribute("code", 111);
      return model;
  }
  // long fileSize = file.getSize();
  // if (fileSize > (500 * 1024))
  // {
  // model.addAttribute("msg", "上傳失敗:文件大小不能超過500K");
  // model.addAttribute("code", 111);
  // return model;
  // }
  // 新文件名
  String newFileName = UUID.randomUUID() + fileName;
  
  String realPath = request.getServletContext().getRealPath("/");
  String realPathParent = (new File(realPath)).getParent();
  // 上傳位置
  String path = realPathParent + "/img/"; // 設定文件保存的目錄
  File f = new File(path);
  if (!f.exists())
      f.mkdirs();
  if (!file.isEmpty())
  {
      try
      {
          FileOutputStream fos = new FileOutputStream(path + newFileName);
          InputStream in = file.getInputStream();
          int b = 0;
          while ((b = in.read()) != -1)
          {
              fos.write(b);
          }
          fos.close();
          in.close();
      } catch (Exception e)
      {
          e.printStackTrace();
      }
  }
  management.setAccidentID(accidentID);
  List<String> strList = new ArrayList<String>();
  List<String> mapList = new ArrayList<String>();
  List<String> listMap = new ArrayList<String>();
  String pathNew = "/img/" + newFileName;
  // 往數據庫中插入(路徑拼接)數組
  String strMap = uploadService.selectPaths(management);
  if (StringUtils.isEmpty(strMap))
  {
      strList.add(pathNew);
  } else
  {
      String[] str1 = strMap.split(",");
      for (String list : str1)
      {
          strList.add(list);
      }
      strList.add(pathNew);
  }
  
  for (String map : strList)
  {
      mapList.add(map);
  }
  
  // 集合
  System.out.println("上傳圖片到:" + path + newFileName);
  String imgDir = mapList.toString().replace("[", "").replace("]", "");
  management.setImgDir(imgDir);
  model.addAttribute("code", uploadService.updatePath(management) > 0 ? 0 : 1);
  
  // 返回所有圖片的絕對路徑
  for (String map : strList)
  {
      fileExt=map.substring(map.indexOf(".")).replace("]", "");
      switch (fileExt)
      {
      case ".jpg":
          map = map.substring(map.indexOf("img") - 1, map.indexOf(".jpg") + 4);
          break;
      case ".png":
          map = map.substring(map.indexOf("img") - 1, map.indexOf(".png") + 4);
          break;
      case ".mp4":
          map = map.substring(map.indexOf("img") - 1, map.indexOf(".mp4") + 4);
          break;
      default:
          break;
      }
      // 封裝圖片顯示路徑（根據當前訪問的客戶端請求的地址來封裝）
      String request_path = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort();
      listMap.add(request_path + map);
  }
  
  imgDir = listMap.toString().replace("[", "").replace("]", "");
  model.addAttribute("imgDir", imgDir);
  model.addAttribute("code", 99);
  return null;
   
  

  }

service:

dao:

serviceImpl:

xml:

ssm 框架下的上傳文件功能