java实现给图片加水印

由于网上加水印需要RMB……，在别人的小轮子上面又改了改：

package club.housy.watermark.util;


import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Font;
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 javax.imageio.ImageIO;

public class ImageUtil {
	  public void mark(BufferedImage bufImg, Image img, String text, Font font, Color color, int x, int y) { 
	        
			RenderingHints rh=new RenderingHints(RenderingHints. KEY_ANTIALIASING,
	                RenderingHints. VALUE_ANTIALIAS_ON);
	        rh.put(RenderingHints.KEY_STROKE_CONTROL
	                , RenderingHints.VALUE_STROKE_PURE);
	        rh.put(RenderingHints.KEY_ALPHA_INTERPOLATION
	                , RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY);
	        Graphics2D g = bufImg.createGraphics(); 
	       
	        g.setRenderingHints(rh);
	        g.drawImage(img, 0, 0, bufImg.getWidth(), bufImg.getHeight(), null); 
	        g.setColor(color); 
	        g.setFont(font); 
	        g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.5f));
	        g.rotate(Math.toRadians(15), (double) bufImg.getWidth() / 2,
                    (double) bufImg.getHeight() / 2);
	        g.drawString(text, x, y); 
	    
	        g.dispose(); 
	        
	    } 
	public void mark(String imgPath, String outImgPath, String text, Font font, Color color, int x, int y) { 
        try { 
            // 读取原图片信息 
            File imgFile = null; 
            Image img = null; 
            if (imgPath != null) { 
                imgFile = new File(imgPath); 
            } 
            if (imgFile != null && imgFile.exists() && imgFile.isFile() && imgFile.canRead()) { 
                img = ImageIO.read(imgFile); 
            } 
            int imgWidth = img.getWidth(null); 
            int imgHeight = img.getHeight(null); 
            // 加水印 
            BufferedImage bufImg = new BufferedImage(imgWidth, imgHeight, BufferedImage.TYPE_INT_RGB); 
            mark(bufImg, img, text, font, color, x, y); 
            // 输出图片 
            FileOutputStream outImgStream = new FileOutputStream(outImgPath); 
            ImageIO.write(bufImg, "jpg", outImgStream); 
            outImgStream.flush(); 
            outImgStream.close(); 
        } catch (Exception e) { 
            e.printStackTrace(); 
        } 
    } 
	public static void main(String[] args) { 
        Font font = new Font("微软雅黑", Font.BOLD, 24); 
//        for(int i = 1; i <= 33; i ++) 
//         new ImageUtil().mark("D:/Pictures/linux/sy1/sy1 (" + i + ").png", "D:/Pictures/linux/sy1/watermark/sy1 (" + i + ").png", "XXXX", font, Color.ORANGE, 350, 150);
        for(int i = 1; i <= 23; i ++) 
            new ImageUtil().mark("D:/Pictures/linux/sy2/sy2 (" + i + ").png", 
            		"D:/Pictures/linux/sy2/watermark/sy2 (" + i + ").png", 
            		"XXX", font, Color.ORANGE, 100, 80); 
    
	} 
}