<!--工具包-->
    <dependency>
      <groupId>cn.hutool</groupId>
      <artifactId>hutool-all</artifactId>
      <version>${hutool.version}</version>
    </dependency>

@Component
public class GoFastdfsClientUtil {

  @Value("${camera.upload.path}")
  private String uploadPath;

  @Value("${camera.delete.path}")
  private String deletePath;

  private final Logger logger = LoggerFactory.getLogger(GoFastdfsClientUtil.class);

  /**
   * 圖片上傳
   * 
   * @param file
   * @param sixCode
   * @return
   * @throws IOException 
   */
  public UploadResult upload(MultipartFile file, String sixCode) throws IOException {
    UploadResult uploadResult = new UploadResult();
    ByteArrayOutputStream bos = addWatermark(file, sixCode);
    byte[] b = bos.toByteArray();
    ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(b);
    InputStreamResource isr = new InputStreamResource(byteArrayInputStream, file.getOriginalFilename());
    Map<String, Object> params = new HashMap<>();
    params.put("file", isr);
    params.put("path", "image");
    params.put("output", "json");
    // 場(chǎng)景
    params.put("scene", "image");
    String resp = HttpUtil.post(uploadPath, params);
    Console.log("resp: {}", resp);
    JSONObject exJson = JSONObject.parseObject(resp);
    uploadResult = JSON.toJavaObject(exJson, UploadResult.class);
    return uploadResult;
  }

  /**
   * 圖片刪除
   * 
   * @param fileUrl
   */
  public void deleteImage(String md5) {
    if (StringUtils.isEmpty(md5)) {
      return;
    }
    try {
      Map<String, Object> params = new HashMap<>();
      params.put("md5", md5);
      HttpUtil.post(deletePath, params);
    } catch (Exception e) {
      logger.warn(e.getMessage());
    }
  }

  /**
   * 加水印
   * 
   * @param myfile
   * @param sixCode
   * @return
   * @throws IOException
   */
  private ByteArrayOutputStream addWatermark(MultipartFile myfile, String sixCode) throws IOException {
    InputStream in = myfile.getInputStream();
    BufferedInputStream bis = new BufferedInputStream(in);
    BufferedImage image = ImageIO.read(bis);
    int height = image.getHeight();
    int width = image.getWidth();
    // 加水印
    Graphics2D g = image.createGraphics();
    g.drawImage(image, 0, 0, width, height, null);
    g.setColor(new Color(128, 128, 128));
    // 字體
    int num = 0;
    if (width > height) {
      num = height / 30;
    } else {
      num = width / 30;
    }
    g.setFont(new Font("微軟雅黑", Font.PLAIN, num));
    SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    String date = formatter.format(new Date());
    String watermarkContent = "拍攝時(shí)間:" + date + "&攝像頭編碼:" + sixCode;
    // 設(shè)置水印坐標(biāo)
    String[] split = watermarkContent.split("&");
    int x = 10;
    int y = height - 10;
    for (int i = 0; i < split.length; i++) {
      g.drawString(split[i], x, y -= g.getFontMetrics().getHeight());
    }
    g.dispose();
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    ImageIO.write(image, "jpg", bos);
    return bos;
  }
}

camera: 
 upload:
  path: http://localhost:8080/group1/upload 
 delete:
  path: http://localhost:8080/group1/delete
 visit:
  path: http://localhost:8080

public class UploadResult implements Serializable{

/**
 * 
 */
private static final long serialVersionUID = 5534287808864118463L;
private String url;
private String md5;
private String path;
private String domain;
private String scene;
private BigInteger size;
private BigInteger mtime;
private String scenes;
private String retmsg;
private int retcode;
private String src;
......get,set方法.....
}