给指定的图片增加水印

package cn.lyc;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Random;

public class ImageIO02 {
    //给指定的图片加水印
    public static void main(String[] args) {
        //图片的路径
        String src = "C:\\Users\\86176\\Desktop\\p\\DM.jpg";
        //随机类
        Random random = new Random();
        try {
            //读取这个图片
            BufferedImage i = ImageIO.read(new File(src));
            //开启画笔
            Graphics2D g = i.createGraphics();
            //去锯齿
            g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
            g.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_DEFAULT);
            g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
            //设置字体文件
            Font bmp = Font.createFont(Font.TRUETYPE_FONT, new File("C:\\Users\\86176\\Desktop\\\\ADKS____.TTF"));
            //设置字体格式 大小
            Font font = bmp.deriveFont(Font.BOLD,30);
            //使用这个字体
            g.setFont(font);
            //水印内容
            String aa = "版权所有:2647871520";
            //坐标
            int x = 20;
            int y = 40;
            //设置随机颜色及透明度
            g.setColor(new Color(random.nextInt(255),random.nextInt(255),random.nextInt(255),random.nextInt(100)+100));
            //把水印文字写进去
            g.drawString(aa,x,y);
            //关闭画笔
            g.dispose();
            //输出一个新文件
            ImageIO.write(i,"jpg",new FileOutputStream("C:\\Users\\86176\\Desktop\\123.jpg"));
        } catch (IOException | FontFormatException e) {
            e.printStackTrace();
        }
    }
}



//执行效果：