java生成水印

package com.zte.club.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 java.util.UUID;

import javax.imageio.ImageIO;
import javax.swing.ImageIcon;

/*******************************************************************************
 * Description: 图片水印工具类
 ******************************************************************************/
public class WaterMarkImageUtils {

	// 水印透明度
	private static float alpha = 0.15f;
	// 水印横向位置
	private static int positionWidth = -15;
	// 水印纵向位置
	private static int positionHeight = 84;
	// 水印文字字体
	private static Font font = new Font("SimHei", Font.PLAIN, 29);
	// 水印文字颜色
	private static Color color = Color.gray;

	public static void createWaterMarkByName(String name, String imageFile) {

		if (name.length() >= 12) {
			setImageMarkOptions(0.15f, -15, 84, new Font("SimHei", Font.PLAIN, 22), Color.gray);
		} else if (name.length() < 12 && name.length() > 9) {
			setImageMarkOptions(0.15f, -15, 84, new Font("SimHei", Font.PLAIN, 26), Color.gray);
		} else {
			setImageMarkOptions(0.15f, 26, 84, new Font("SimHei", Font.PLAIN, 26), Color.gray);
		}

		markImageByText(name, 148, 148, imageFile, -45);
	}

	/**
	 * 
	 * @param alpha
	 *            水印透明度
	 * @param positionWidth
	 *            水印横向位置
	 * @param positionHeight
	 *            水印纵向位置
	 * @param font
	 *            水印文字字体
	 * @param color
	 *            水印文字颜色
	 */
	public static void setImageMarkOptions(float alpha, int positionWidth, int positionHeight, Font font, Color color) {
		if (alpha != 0.0f)
			WaterMarkImageUtils.alpha = alpha;
		if (positionWidth != 0)
			WaterMarkImageUtils.positionWidth = positionWidth;
		if (positionHeight != 0)
			WaterMarkImageUtils.positionHeight = positionHeight;
		if (font != null)
			WaterMarkImageUtils.font = font;
		if (color != null)
			WaterMarkImageUtils.color = color;
	}

	/**
	 * 给图片添加水印图片
	 * 
	 * @param iconPath
	 *            水印图片路径
	 * @param srcImgPath
	 *            源图片路径
	 * @param targerPath
	 *            目标图片路径
	 */
	public static void markImageByIcon(String iconPath, String srcImgPath, String targerPath) {
		markImageByIcon(iconPath, srcImgPath, targerPath, null);
	}

	/**
	 * 给图片添加水印图片、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
	 */
	public static void markImageByIcon(String iconPath, String srcImgPath, String targerPath, Integer degree) {
		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);

			// 1、得到画笔对象
			Graphics2D g = buffImg.createGraphics();

			// 2、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);
			// 3、设置水印旋转
			if (null != degree) {
				g.rotate(Math.toRadians(degree), (double) buffImg.getWidth() / 2, (double) buffImg.getHeight() / 2);
			}

			// 4、水印图片的路径 水印图片一般为gif或者png的，这样可设置透明度
			ImageIcon imgIcon = new ImageIcon(iconPath);

			// 5、得到Image对象。
			Image img = imgIcon.getImage();

			g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha));

			// 6、水印图片的位置
			g.drawImage(img, positionWidth, positionHeight, null);
			g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER));
			// 7、释放资源
			g.dispose();

			// 8、生成图片
			os = new FileOutputStream(targerPath);
			ImageIO.write(buffImg, "JPG", os);

			System.out.println("图片完成添加水印图片");

		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				if (null != os)
					os.close();
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
	}

	/**
	 * 给图片添加水印文字
	 * 
	 * @param logoText
	 *            水印文字
	 * @param srcImgPath
	 *            源图片路径
	 * @param targerPath
	 *            目标图片路径
	 */
	public static void markImageByText(String logoText, String srcImgPath, String targerPath) {
		markImageByText(logoText, srcImgPath, targerPath, null);
	}

	/**
	 * 给图片添加水印文字、可设置水印文字的旋转角度
	 * 
	 * @param logoText
	 * @param srcImgPath
	 * @param targerPath
	 * @param degree
	 */
	public static void markImageByText(String logoText, String srcImgPath, String targerPath, Integer degree) {

		InputStream is = null;
		OutputStream os = null;
		try {
			// 1、源图片
			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), Image.SCALE_SMOOTH), 0,
					0, null);
			// 4、设置水印旋转
			if (null != degree) {
				g.rotate(Math.toRadians(degree), (double) buffImg.getWidth() / 2, (double) 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(font);
			// 7、设置水印文字透明度
			g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha));
			// 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, positionWidth, positionHeight);
			// 9、释放资源
			g.dispose();
			// 10、生成图片
			os = new FileOutputStream(targerPath);
			ImageIO.write(buffImg, "JPG", os);

			System.out.println("图片完成添加水印文字");

		} 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();
			}
		}
	}

	public static void markImageByText(String logoText, int imgWidth, int imgHeight, String targerPath,
			Integer degree) {

		InputStream is = null;
		OutputStream os = null;
		try {

			BufferedImage buffImg = new BufferedImage(imgWidth, imgHeight, BufferedImage.TYPE_INT_RGB);

			// 2、得到画笔对象
			Graphics2D g = buffImg.createGraphics();

			g.setBackground(Color.WHITE);
			g.clearRect(0, 0, imgWidth, imgHeight);

			// 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();
			// 4、设置水印旋转
			if (null != degree) {
				g.rotate(Math.toRadians(degree), (double) buffImg.getWidth() / 2, (double) 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(font);
			// 7、设置水印文字透明度
			g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha));
			// 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, positionWidth, positionHeight);
			// 9、释放资源
			g.dispose();
			// 10、生成图片
			
			File tmpFile = new File(targerPath);
			if (!tmpFile.getParentFile().exists()) {
				tmpFile.getParentFile().mkdirs();
			}
			
			os = new FileOutputStream(targerPath);
			ImageIO.write(buffImg, "JPG", os);

			System.out.println("图片完成添加水印文字");

		} 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();
			}
		}
	}

	public static void main(String[] args) {

		String logoText = "10066666欧阳锋";
		String logoText1 = "10099999叶问";
		String logoText2 = "10088888西门吹雪";
		String logoText3 = "西门吹雪";
		String logoText4 = "李寻欢";
		String logoText5 = "叶问";

		String targetImage = "e:/10066666.jpg";
		String targetImage1 = "e:/10099999.jpg";
		String targetImage2 = "e:/10088888.jpg";
		String targetImage3 = "e:/10099991.jpg";
		String targetImage4 = "e:/10099992.jpg";
		String targetImage5 = "e:/10099993.jpg";

		System.out.println("生成水印文字开始...");
		
		createWaterMarkByName(logoText,targetImage);
		createWaterMarkByName(logoText1,targetImage1);
		createWaterMarkByName(logoText2,targetImage2);
		createWaterMarkByName(logoText3,targetImage3);
		createWaterMarkByName(logoText4,targetImage4);
		createWaterMarkByName(logoText5,targetImage5);

		System.out.println("生成水印文字结束...");

	}

}