java图片添加水印和压缩，java图片水印,图片添加水印和压缩[Ja

java图片添加水印和压缩，java图片水印,图片添加水印和压缩[Ja

图片添加水印和压缩

[Java]代码 ```javapackage net.leebao.core.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.IOException;import java.io.InputStream;import java.io.OutputStream;

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

/ * 图片水印 */public class ImageUtil { / * @param args */ public static void main(String[] args) { String srcImgPath = "E:/zhzq/1.png"; String iconPath = "E:/zhzq/2.jpg"; String targerPath = "E:/zhzq/4.png"; // 给图片添加水印// ImageUtil.waterMarkImageByIcon("java水印图片", iconPath, srcImgPath, targerPath, 0, 0, 0, 0.5f); ImageUtil.waterMarkByText("java水印图片", srcImgPath, targerPath, 0, 0, 0, 0.5f); // 给图片添加水印,水印旋转-45 //
}

/** * 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 width *            宽度(与左相比) * @param height *            高度(与顶相比) * @param clarity *            透明度(小于1的数)越接近0越透明 */public static void waterMarkImageByIcon(String logoText, String iconPath, String srcImgPath, String targerPath,        Integer degree, Integer width, Integer height, float clarity) {    OutputStream os = null;    try {        Image srcImg = ImageIO.read(new File(srcImgPath));        System.out.println("width:" + srcImg.getWidth(null));        System.out.println("height:" + srcImg.getHeight(null));        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 = clarity; // 透明度        g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha));        // 表示水印图片的位置        //          g.drawImage(img, width, height, null);        g.drawImage(img, srcImg.getWidth(null) - img.getWidth(null), srcImg.getHeight(null) - img.getHeight(null), null);        //          g.drawString(logoText, srcImg.getWidth(null) - img.getWidth(null), srcImg.getHeight(null) - img.getHeight(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("添加水印图片完成!");    } catch (Exception e) {        e.printStackTrace();    } finally {        try {            if (null != os)                os.close();        } catch (Exception e) {            e.printStackTrace();        }    }}/** * 给图片添加水印、可设置水印图片旋转角度 *  * @param logoText *            水印文字 * @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 width *            宽度(与左相比) * @param height *            高度(与顶相比) * @param clarity *            透明度(小于1的数)越接近0越透明 */public static void waterMarkByText(String logoText, String srcImgPath, String targerPath, Integer degree, Integer width,        Integer height, Float clarity) {    // 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        // 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);        }        // 设置颜色        g.setColor(Color.red);        // 设置 Font        g.setFont(new Font("宋体", Font.BOLD, 30));        float alpha = clarity;        g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha));        // 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, height);        g.dispose();        os = new FileOutputStream(targerPath);        // 生成图片        ImageIO.write(buffImg, "JPG", os);        System.out.println("添加水印文字完成!");    } 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();        }    }}/** * 图片缩放(图片等比例缩放为指定大小，空白部分以白色填充) *  * @param srcPath *            源图片路径 * @param destPath *            缩放后图片路径 */public static void zoomImage(String srcPath, String destPath, int destHeight, int destWidth) {    try {        BufferedImage srcBufferedImage = ImageIO.read(new File(srcPath));        int imgWidth = destWidth;        int imgHeight = destHeight;        int srcWidth = srcBufferedImage.getWidth();        int srcHeight = srcBufferedImage.getHeight();        if (srcHeight >= srcWidth) {            imgWidth = (int) Math.round(((destHeight * 1.0 / srcHeight) * srcWidth));        } else {            imgHeight = (int) Math.round(((destWidth * 1.0 / srcWidth) * srcHeight));        }        BufferedImage destBufferedImage = new BufferedImage(destWidth, destHeight, BufferedImage.TYPE_INT_RGB);        Graphics2D graphics2D = destBufferedImage.createGraphics();        graphics2D.setBackground(Color.WHITE);        graphics2D.clearRect(0, 0, destWidth, destHeight);        graphics2D.drawImage(srcBufferedImage.getScaledInstance(imgWidth, imgHeight, Image.SCALE_SMOOTH), (destWidth / 2)                - (imgWidth / 2), (destHeight / 2) - (imgHeight / 2), null);        graphics2D.dispose();        ImageIO.write(destBufferedImage, "JPEG", new File(destPath));    } catch (IOException e) {        e.printStackTrace();    }}

}

```