java添加多个水印

package com.zhx.util.imgutil;

import com.zhx.util.stringutil.ArithUtil;
import net.coobird.thumbnailator.Thumbnails;
import net.coobird.thumbnailator.filters.Watermark;
import net.coobird.thumbnailator.geometry.Positions;
import sun.font.FontDesignMetrics;

import javax.imageio.ImageIO;
import javax.imageio.ImageReader;
import javax.imageio.stream.ImageInputStream;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.Iterator;


public class ImgHandle {

    public static void main(String[] args) {
        String filePath = "C:\Users\admin\Desktop\3333.jpg";
        String newFilePath = "C:\Users\admin\Desktop\33d333ada1111.png";
//        boolean sc2 = waterMarkWithText(filePath, newFilePath, "https://licd.beijing2022.cn", 1f, 1.0f, 1000, 1000, 1);
        boolean sc23 = autoWaterMarkWithText(filePath, newFilePath, "licd.beijing2022.cn", 250, 250, 1.0f, 1);
    }

    /**
     * 图片缩放加水印
     *
     * @param filePath      原图路径
     * @param newFilePath   处理后新图片路径
     * @param waterMarkPath 水印图片路径
     * @param scale         比例（0.1- 1.0）
     * @param transparency  水印透明度
     */
    public static boolean waterMark(String filePath, String newFilePath, String waterMarkPath, float scale, float transparency) {
        try {
            Thumbnails.of(filePath)
                    .scale(scale).
                    watermark(Positions.BOTTOM_RIGHT, ImageIO.read(new File(waterMarkPath)), transparency).toFile(newFilePath);
            return true;
        } catch (IOException e) {
            e.printStackTrace();
            return false;
        }
    }

    /**
     * 图片天加文字水印（默认缩小scale）
     * 备注：
     * Positions.BOTTOM_RIGHT  表示水印位置
     *
     * @param filePath     原图路径
     * @param newFilePath  处理后新图片路径
     * @param markText     水印文字
     * @param scale        比例（0.1- 1.0）
     * @param transparency 水印透明度
     * @param type         1 按比例 2按宽高
     * @param widthSize    缩放宽
     * @param heightSize   缩放高
     */
    public static boolean waterMarkWithText(String filePath, String newFilePath,
                                            String markText, float scale, float transparency,
                                            int widthSize, int heightSize, int type) {
        try {
            //先进行图片缩放
            if (type == 1) {
                imgScale(scale, filePath, newFilePath);
            } else {
                imgSize(widthSize, heightSize, filePath, newFilePath);
            }
            //获取缩放图分辨率
            File file = new File(newFilePath);
            BufferedImage imgBi = null;
            try {
                imgBi = ImageIO.read(file);
            } catch (Exception e) {
                e.printStackTrace();
            }
            //图片原始宽度
            int width = imgBi.getWidth();
            //图片原始高度
            int height = imgBi.getHeight();
            //计算右下角水印高宽
            int waterWidth = new Double(width * 0.75).intValue();
            int waterWidth2 = new Double(width * 0.5).intValue();
            int waterHeight = new Double(height).intValue();
            ImgHandle im = new ImgHandle();
            String randomNum = "NO." + String.valueOf(System.currentTimeMillis());
            if (randomNum.length() > 16) {
                randomNum = randomNum.substring(0, 16);
            }
            BufferedImage bi = im.apply(imgBi, waterWidth, waterHeight, markText, 1, randomNum);
            BufferedImage bi2 = im.apply(imgBi, waterWidth2, waterHeight, randomNum, 1, markText);
            Watermark watermark = new Watermark(Positions.BOTTOM_LEFT,
                    bi, transparency);
            Watermark watermark2 = new Watermark(Positions.BOTTOM_RIGHT,
                    bi2, transparency);

            Thumbnails.of(newFilePath).scale(1).
                    watermark(watermark).toFile(newFilePath);
            watermark2(watermark2, newFilePath);
            return true;
        } catch (IOException e) {
            e.printStackTrace();
            return false;
        }
    }

    /**
     * 生成的水印
     *
     * @param img
     * @return
     */
    public BufferedImage apply(BufferedImage img, int waterWidth, int waterHeight, String markText, float scale,
                               String markText2) {
        int width = img.getWidth();
        int height = img.getHeight();

        BufferedImage imgWithWatermark = new BufferedImage(waterWidth, waterHeight, BufferedImage.TYPE_INT_RGB);
        Graphics2D g = imgWithWatermark.createGraphics();

        //设置透明  start
        imgWithWatermark = g.getDeviceConfiguration().createCompatibleImage(waterWidth, waterHeight, Transparency.TRANSLUCENT);
        g = imgWithWatermark.createGraphics();
        g.setColor(new Color(159, 160, 160));
        //设置透明  end
        int[] sizes = new int[]{60, 30, 20, 16, 14, 9, 8, 6, 4};
        int contentLength = 0;
        Font font = null;
        for (int i = 0; i < 8; i++) {
            //设置字体及大小
            font = new Font("Helvetica", Font.BOLD, sizes[i]);
            g.setFont(font);
            g.drawRect(0, 0, 0, 0);
            contentLength = getWatermarkLength(markText + markText2, g);
            if (contentLength < width) {
                //找到最合适的字体
                int contentLength2 = getWatermarkLength(markText, g);
//                System.out.println("水印长度contentLength2----" + contentLength2);
                break;
            }
        }
        //设置水印的坐标
        FontDesignMetrics metrics = FontDesignMetrics.getMetrics(g.getFont());
        int fontHeight = metrics.getHeight();
        char[] data = markText.toCharArray();
        //x1水印1距离左边距和底边距
        //x2水印2距离右边距和底边距
        int x1 = 0;
        int x2 = 0;
        if (width > 500) {
            x1 = 20;
        } else {
            x1 = 8;
        }
        int y = waterHeight - x1;
//        System.out.println("水印高度waterHeight----"+waterHeight);
//        System.out.println("字体高度fontHeight----"+fontHeight);
        x2 = width / 2 - getWatermarkLength(markText, g) - x1;
        if (markText.contains("beijing2022")) {
//            System.out.println("距离中心位置x1：----" + x1);
//            System.out.println("距离顶部位置y：----" + y);
            g.drawChars(data, 0, data.length, x1, y);
        } else {
//            System.out.println("距离中心位置x2：----" + x2);
//            System.out.println("距离顶部位置y：----" + y);
            g.drawChars(data, 0, data.length, x2, y);
        }
        return imgWithWatermark;
    }

    /**
     * 缩放
     *
     * @param scale
     * @param filePath
     * @param newFilePath
     * @return
     */
    public static boolean imgScale(float scale, String filePath, String newFilePath) {
        try {
            Thumbnails.of(filePath).scale(scale).toFile(newFilePath);
            return true;
        } catch (IOException e) {
            e.printStackTrace();
            return false;
        }
    }

    /**
     * 大小缩放
     *
     * @param width
     * @param height
     * @param filePath
     * @param newFilePath
     * @return
     */
    public static boolean imgSize(int width, int height, String filePath, String newFilePath) {
        try {
            Thumbnails.of(filePath).size(width, height).toFile(newFilePath);
            return true;
        } catch (IOException e) {
            e.printStackTrace();
            return false;
        }
    }

    public static boolean watermark2(Watermark watermark2, String filePath) {
        try {
            Thumbnails.of(filePath).scale(1).
                    watermark(watermark2).toFile(filePath);
            return true;
        } catch (IOException e) {
            e.printStackTrace();
            return false;
        }
    }


    /**
     * 计算水印文字宽度
     *
     * @param waterMarkContent
     * @param g
     * @return
     */
    public static int getWatermarkLength(String waterMarkContent, Graphics2D g) {
        return g.getFontMetrics(g.getFont()).charsWidth(waterMarkContent.toCharArray(), 0, waterMarkContent.length());
    }

    /**
     * @param filePath
     * @param newFilePath
     * @param markText
     * @param minWidth     文件缩放宽
     * @param minHeight    文件缩放高
     * @param transparency
     * @param addWater     是否用加水印1是2否
     * @return
     */
    public static boolean autoWaterMarkWithText(String filePath, String newFilePath, String markText, int minWidth, int minHeight, float transparency, int addWater) {
        String fileP = filePath;
        try {
            //获取原图分辨率
            //https://www.cnblogs.com/SimonHu1993/p/9396375.html
            RotateImage.RotateImg(filePath, newFilePath);
            fileP = newFilePath;
        } catch (Exception e) {
            e.printStackTrace();
        }
        File file = new File(fileP);
        BufferedImage imgBi = null;
        try {
            imgBi = ImageIO.read(file);
        } catch (Exception e) {
            e.printStackTrace();
        }
        // 图片原始宽度
        int width = imgBi.getWidth();
        int height = imgBi.getHeight();
        double min = ArithUtil.getDouble(String.valueOf(minWidth));
        double real = ArithUtil.getDouble(String.valueOf(width));
        float scale = (float) ArithUtil.div(min, real, 5);
        //缩放规则1 按比例 2按宽高
        int type = 1;
        if (minWidth != 0 && minHeight != 0) {
            type = 2;
            //如果按比例缩放的高度大于要求高度再缩放高
            double realHeight = ArithUtil.getDouble(String.valueOf(height));
            float afterHeight = (float) ArithUtil.mul(realHeight, scale);
            if (afterHeight > minHeight) {
                float scale2 = (float) ArithUtil.div(minHeight, afterHeight, 5);
                minWidth = new Double(minWidth * scale2).intValue();
                afterHeight = minHeight;
            }
            minHeight = (int) afterHeight;
        }
        Boolean result = false;
        //最大的缩略图上加水印，其他的缩略图在加完水印的缩略图上进行压缩
        if (addWater == 1) {
            result = waterMarkWithText(fileP, newFilePath, markText, scale, transparency,
                    minWidth, minHeight, type);
        } else if (addWater == 2) {
            result = imgSize(minWidth, minHeight, fileP, newFilePath);
        }
        return result;
    }

    /**
     * 图片缩放
     *
     * @param filePath    图片路径
     * @param newFilePath 缩略图路径
     * @param scale       比例（0.1- 1.0）
     * @return
     */
    public static boolean scaleImg(String filePath, String newFilePath, float scale) {
        try {
            Thumbnails.of(filePath).scale(scale).toFile(newFilePath);
        } catch (IOException e) {
            e.printStackTrace();
            return false;
        }
        return true;
    }

    /**
     * 获得图片的格式，例如：JPEG、GIF等
     *
     * @param file
     * @return
     */
    public static String getImageFormat(File file) {
        try {
            ImageInputStream iis = ImageIO.createImageInputStream(file);
            Iterator<ImageReader> iterator = ImageIO.getImageReaders(iis);
            while (iterator.hasNext()) {
                ImageReader reader = iterator.next();
                return reader.getFormatName().toLowerCase();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }


}

贴上横竖效果图: