java圖片添加水印文字

public Map uploadImg(MultipartFile file) throws IOException {
 OutputStream os = null;
 InputStream is = file.getInputStream();
 try {
 String path = "D:/testFile/";
 byte[] bs = new byte[1024];
 // 輸出的文件流保存到本地文件
 File tempFile = new File(path);
 if (!tempFile.exists()) {
 tempFile.mkdirs();
 }
 os = new FileOutputStream(tempFile.getPath() + File.separator + file.getOriginalFilename());
 // 讀取到的數據長度
 int len;
 // 開始讀取
 while ((len = is.read(bs)) > 0) {
 os.write(bs, 0, len);
 }

 String urlPath = path + file.getOriginalFilename();
 logger.info(urlPath);

 Color markContentColor = new Color(234,17,92);
 Font font = new Font("新宋體",Font.BOLD,30);
 String waterMarkContent = "德瑪西亞";
 String tarImgPath = "D:/"+file.getOriginalFilename();

 try {
 // 讀取原圖片信息
 File srcImgFile = new File(urlPath);
 //文件轉化為圖片
 Image srcImg = ImageIO.read(srcImgFile);
 //獲取圖片的寬
 int srcImgWidth = srcImg.getWidth(null);
 //獲取圖片的高
 int srcImgHeight = srcImg.getHeight(null);
 // 加水印
 BufferedImage bufImg = new BufferedImage(srcImgWidth, srcImgHeight, BufferedImage.TYPE_INT_RGB);
 Graphics2D g = bufImg.createGraphics();
 g.drawImage(srcImg, 0, 0, srcImgWidth, srcImgHeight, null);
 //根據圖片的背景設置水印顏色
 g.setColor(markContentColor);
 //設置字體
 g.setFont(font);

 //設置水印的坐標
 int x1 = srcImgWidth - 2*getWatermarkLength(waterMarkContent, g);
 int x = 380;
 int y = 285;
 int y1 = srcImgHeight - 2*getWatermarkLength(waterMarkContent, g);
 g.drawString(waterMarkContent, x, y);
 g.dispose();
 // 輸出圖片
 FileOutputStream outImgStream = new FileOutputStream(tarImgPath);
 try {
 ImageIO.write(bufImg, "png",outImgStream);
 } catch (IOException e) {
 e.printStackTrace();
 }
 logger.info("添加水印完成");
 outImgStream.flush();
 outImgStream.close();

 } catch (Exception e) {
 }

　　return null;

 } catch (IOException e) {
 e.printStackTrace();
 } catch (Exception e) {
 e.printStackTrace();
 } finally {
 // 完畢，關閉所有鏈接
 try {
 os.close(); is.close(); 
　　　　　　} catch (IOException e) { e.printStackTrace(); } 
} return null;}

public int getWatermarkLength(String waterMarkContent, Graphics2D g) {
 return g.getFontMetrics(g.getFont()).charsWidth(waterMarkContent.toCharArray(), 0, waterMarkContent.length());
}