原图如下:
代码如下:
package test; import java.awt.AlphaComposite; import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Image; import java.awt.RenderingHints; import java.awt.image.BufferedImage; import java.io.File; import java.io.FileOutputStream; import java.io.OutputStream; import javax.imageio.ImageIO; import javax.swing.ImageIcon; import com.sun.image.codec.jpeg.JPEGCodec; import com.sun.image.codec.jpeg.JPEGEncodeParam; import com.sun.image.codec.jpeg.JPEGImageEncoder; public class ImageMark { /** * 添加文字水印 * @param targetImg 目标图片路径,如:D://fj.jp * @param pressText 水印文字, 如:XingKong22star * @param fontName 字体名称, 如:宋体 * @param fontStyle 字体样式,如:粗体和斜体(Font.BOLD|Font.ITALIC) * @param fontSize 字体大小,单位为像素 * @param color 字体颜色 * @param x 水印文字距离目标图片左侧的偏移量,如果x<0, 则在正中间 * @param y 水印文字距离目标图片上侧的偏移量,如果y<0, 则在正中间 * @param alpha 透明度(0.0 -- 1.0, 0.0为完全透明,1.0为完全不透明) */ public static boolean createMark(String filePath,String newFilePath) { float watermarkAlpha = (float) 0.5; // 读取原图片 ImageIcon imgIcon = new ImageIcon(filePath); Image theImg = imgIcon.getImage(); int width = theImg.getWidth(null); int height = theImg.getHeight(null); // 创建一个和原图片同大小的新空白图片 BufferedImage bimage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); Graphics2D g = bimage.createGraphics(); // bimage = g.getDeviceConfiguration().createCompatibleImage(width, // height, Transparency.TRANSLUCENT); // g.dispose(); // g = bimage.createGraphics(); //设置字体 Font font = new Font("SansSerif", Font.BOLD, 18); g.setFont(font); // 设置前景色 g.setColor(Color.white); // 设置背景色 g.setBackground(Color.white); // 画原图 g.drawImage(theImg, 0, 0, null); // 值从0f-1.0f g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, watermarkAlpha)); // 画字 g.drawString("XingKong22star", imgIcon.getIconWidth() - 150 ,imgIcon.getIconHeight() - 20); // 透明度设置 结束 g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER)); g.dispose(); FileOutputStream out = null; try { String newWaterFile = newFilePath; out = new FileOutputStream(newWaterFile); JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out); JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bimage); param.setQuality(50f, true); encoder.encode(bimage, param); } catch (Exception e) { System.out.println("---生成失败---"); return false; } finally { if (out != null) { try { out.close(); out = null; } catch (Exception e) { } } } System.out.println("水印文字加载完毕"); return true; } /** * 把图片印刷到图片上 * * @param iconPath -- * 水印文件 * @param srcImgPath -- * 目标文件 * @param targerPath * 保存位置 * @param x * --x坐标 * @param y * --y坐标 */ public static void markImageByIcon(String iconPath, String srcImgPath, String targerPath, Integer degree,int x,int y) { OutputStream os = null; try { Image srcImg = ImageIO.read(new File(srcImgPath)); BufferedImage buffImg = new BufferedImage(srcImg.getWidth(null), srcImg.getHeight(null), BufferedImage.TYPE_INT_RGB); // 得到画笔对象 // Graphics g= buffImg.getGraphics(); Graphics2D g = buffImg.createGraphics(); // 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), Image.SCALE_SMOOTH), 0, 0, null); if (null != degree) { // 设置水印旋转 g.rotate(Math.toRadians(degree), (double) buffImg.getWidth() / 2, (double) buffImg .getHeight() / 2); } // 水印图象的路径 水印一般为gif或者png的,这样可设置透明度 ImageIcon imgIcon = new ImageIcon(iconPath); // 得到Image对象。 Image img = imgIcon.getImage(); float alpha = 0.5f; // 透明度 g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha)); // 表示水印图片的位置 g.drawImage(img, x, y, null); g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER)); g.dispose(); os = new FileOutputStream(targerPath); // 生成图片 ImageIO.write(buffImg, "JPG", os); System.out.println("图片完成添加Icon。。。。。。"); } catch (Exception e) { e.printStackTrace(); } finally { try { if (null != os) os.close(); } catch (Exception e) { e.printStackTrace(); } } } public static void main(String[] args) { String filePath = "D:/fj.jpg"; String newFilePath = "D:/fj_water.jpg"; ImageMark.createMark(filePath,newFilePath); String srcImgPath = "D:/fj.jpg"; String iconPath = "D:/3.png"; String targerPath = "D:/markImageByIcon.jpg"; // 给图片添加水印 ImageMark.markImageByIcon(iconPath, srcImgPath, targerPath, null, 800, 730); } }
水印文字效果:
图片水印效果
水印图片:
添加完后:
原文地址:http://blog.csdn.net/xingkong22star/article/details/39521961