java 图片水印(图片水印和文字水印)

package com.text.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 java.io.InputStream;
import java.io.OutputStream;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;

/**
 * 图片水印处理
 */
public class ImageMarkUtil {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		String srcImgPath = "d:/2.jpg";
		String iconPath = "d:/3.png";
		String targerPath = "d:/4.jpg";
		String targerPath3 = "d:/5.jpg";
		String logoText = "[图片水印 http://563525042.iteye.com]";
		// 给图片添加图片水印
		ImageMarkUtil.markImageByIcon(iconPath, srcImgPath, targerPath,0,0.5f, 50, 80);

		// 给图片添加文字水印
		ImageMarkUtil.markByText(logoText, srcImgPath, targerPath3,0, 0.5f,60, 90,"0",20);


	}
    

	/**
	 * 给图片添加水印、可设置水印图片旋转角度
	 * 
	 * @param iconPath
	 *            水印图片路径
	 * @param srcImgPath
	 *            源图片路径
	 * @param targerPath
	 *            目标图片路径
	 * @param degree
	 *            水印图片旋转角度
	 * @param transparency
	 *            水印透明度 如0.5f
	 * @param sWidth
	 *            水印图片离原图左边框距离百分比
	 * @param sHeight 水印图片离原图上边框距离百分比
	 */
	public static  void markImageByIcon(String iconPath, String srcImgPath,String targerPath, 
			Integer degree, float transparency,Integer sWidth, Integer sHeight) 
	{
		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
			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 = transparency; // 透明度
			g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,
					alpha));
			ImageIcon imgtarget = new ImageIcon(srcImgPath);
			Image theImg = imgtarget.getImage();
			int  width = theImg.getWidth(null);
			int height = theImg.getHeight(null);
			// 表示水印图片的位置
			g.drawImage(img,(int)(width*((float)sWidth/(float)100)), (int)(height*(float)sHeight/(float)100), null);
			g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER));
			g.dispose();
			os = new FileOutputStream(targerPath);
			// 生成图片
			ImageIO.write(buffImg, "JPG", os);
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				if (null != os)
					os.close();
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
	}

	/**
	 * 给图片添加文字水印、可设置水印的旋转角度
	 * 
	 * @param logoText
	 * @param srcImgPath
	 * @param targerPath
	 * @param degree
	 * @param transparency
	 *            水印透明度 如0.5f
	 * @param sWidth
	 *            水印图片离原图左边框距离百分比
	 * @param sHeight
	 *           水印图片离原图上边框距离百分比
	 *@param sfontbold 字体是否加粗（0：加粗，1：正常）
	 *@param sforntsize 字体大小        
	 */
	public static void markByText(String logoText, String srcImgPath,String targerPath, Integer degree,
			float transparency,Integer sWidth, Integer sHeight,String sfontbold,Integer sforntsize) {
		// 主图片的路径
		InputStream is = null;
		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
			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);
			}
			// 设置颜色
			g.setColor(Color.blue);
			// 设置 Font(字体，字体样式，字体大小) 如font("宋体",Font.BOLD,20)
			if(sfontbold!=null&&sfontbold.equals("0"))
			{
			g.setFont(new Font("宋体", Font.BOLD, sforntsize));
			}
			else {
				g.setFont(new Font("宋体", Font.ITALIC, sforntsize));
			}
			// 设置透明度 1f 不透明，0.5f半透明，0f完全透明
			float alpha = transparency;
			g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,
					alpha));
			ImageIcon imgIcon = new ImageIcon(srcImgPath);
			Image theImg = imgIcon.getImage();
			int width = theImg.getWidth(null);
			int height = theImg.getHeight(null);
			// 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, width*((float)sWidth/(float)100), height*(float)sHeight/(float)100);

			g.dispose();

			os = new FileOutputStream(targerPath);

			// 生成图片
			ImageIO.write(buffImg, "JPG", 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();
			}
		}
	}

}