JAVA给图片添加水印

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package com.test;   import org.junit.Test; import javax.imageio.ImageIO; import java.awt.*; import java.awt.image.BufferedImage; import java.io.File; import java.io.FileOutputStream; import java.io.InputStream; import java.io.OutputStream;   public class JunitImage {     @Test     public void testImage(){         markImageByText("hello world","D:/1.jpg","D:2.jpg",45,new Color(0,0,0),"JPG");     }         /**      * 给图片添加水印文字、可设置水印文字的旋转角度      * @param logoText 要写入的文字      * @param srcImgPath 源图片路径      * @param newImagePath 新图片路径      * @param degree 旋转角度      * @param color  字体颜色      * @param formaName 图片后缀      */     public static void markImageByText(String logoText, String srcImgPath,String newImagePath,Integer degree,Color color,String formaName) {         InputStream is = null;         OutputStream os = null;         try {             // 1、源图片             java.awt.Image srcImg = ImageIO.read(new File(srcImgPath));             BufferedImage buffImg = new BufferedImage(srcImg.getWidth(null),srcImg.getHeight(null), BufferedImage.TYPE_INT_RGB);             // 2、得到画笔对象             Graphics2D g = buffImg.createGraphics();             // 3、设置对线段的锯齿状边缘处理             g.setRenderingHint(RenderingHints.KEY_INTERPOLATION,RenderingHints.VALUE_INTERPOLATION_BILINEAR);             g.drawImage(srcImg.getScaledInstance(srcImg.getWidth(null), srcImg.getHeight(null), java.awt.Image.SCALE_SMOOTH), 0, 0, null);             // 4、设置水印旋转             if (null != degree) {                 g.rotate(Math.toRadians(degree),  buffImg.getWidth()/2,buffImg.getHeight() /2);             }             // 5、设置水印文字颜色             g.setColor(color);             // 6、设置水印文字Font             g.setFont(new java.awt.Font("宋体", java.awt.Font.BOLD, buffImg.getHeight() /2));             // 7、设置水印文字透明度             g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, 0.15f));             // 8、第一参数->设置的内容，后面两个参数->文字在图片上的坐标位置(x,y)             g.drawString(logoText,  buffImg.getWidth()/2 , buffImg.getHeight()/2);             // 9、释放资源             g.dispose();             // 10、生成图片             os = new FileOutputStream(newImagePath);             ImageIO.write(buffImg, formaName, os);         } catch (Exception e) {             e.printStackTrace();         } finally {             try {                 if (null != is)                     is.close();             } catch (Exception e) {                 e.printStackTrace();             }             try {                 if (null != os)                     os.close();             } catch (Exception e) {                 e.printStackTrace();             }         }     }     }