Java後臺簡單的圖片上傳並利用Thumbnails實現壓縮

public void uploadPicture(
			@RequestParam(value = "file", required = false) MultipartFile file,
			HttpServletRequest request, HttpServletResponse response) {
		ResultDataModel result = new ResultDataModel();
		// 獲取圖片原始文件名
		String originalFileName = file.getOriginalFilename();
		//後綴
		String suffix = originalFileName.substring(originalFileName.lastIndexOf("."));
		//String name = "" + System.currentTimeMillis();
		
		SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmssSSS");
		String fileName = sdf.format(new Date())
				+ suffix;
		String smallFileName =  sdf.format(new Date())
				+ "small"
				+ suffix;
		String path = "D:/upload/img";

		String filePathName = path + "/" + fileName;
		String thumbnailFilePathName = path + "/" + smallFileName;
		System.out.println(filePathName);
		File dest = new File(filePathName);

		// 上傳圖片
		try {
			// 將上傳的文件寫到服務器上指定的文件。
			file.transferTo(dest);
			double scale = 0.25d;
			Thumbnails
					.of(filePathName)
					.scale(1f)
					.outputQuality(scale)
					.outputFormat(
							originalFileName.substring(originalFileName
									.lastIndexOf(".") + 1))
					.toFile(thumbnailFilePathName);
			dest.delete();
			JSONObject obj = new JSONObject();
			obj.put("name", smallFileName);
			obj.put("url", thumbnailFilePathName);
			result = ResultDataModel.returnSuccess(JSON.toJSONString(obj));
		} catch (Exception e) {
			e.printStackTrace();
			result.setStatus(false);
			result.setMessage("系統異常，圖片上傳失敗");
		}

		toClient(result);
	}