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  • java 图形化小工具Abstract Window Toolit ImageIO缩放图片,添加水印

    实现步骤:

    读取图像
    Image src = ImageIO.read
    创建目标图像
    BufferedImage distImage = new BufferedImage(dstWidth, dstHeight, BufferedImage.TYPE_INT_RGB);
    //目标图像画笔画图,把原图像画出来
    Graphics2D graphics2D = (Graphics2D) distImage.getGraphics();
    graphics2D.drawImage(src,0, 0, dstWidth, dstHeight, null);
    //添加文字水印
    graphics2D.setColor(Color.red);
    graphics2D.drawString("V哥教育", 30, 30);
    //保存到文件
    ImageIO.write(distImage,"png", new File("C:\Users\ZHANGMINGDA\Desktop\日报\订单详情-smal.png"));
    import javax.imageio.ImageIO;
    import java.awt.*;
    import java.awt.image.BufferedImage;
    import java.io.File;
    import java.io.IOException;
    
    /**
     * @ClassName ImageIOTest
     * @projectName: object1
     * @author: Zhangmingda
     * @description: XXX
     * date: 2021/5/8.
     */
    public class ImageIOTest {
        public static void main(String[] args) throws IOException {
            //读取图像
            Image src = ImageIO.read(new File("C:\Users\ZHANGMINGDA\Desktop\日报\订单详情.png"));
            //设置目的图像宽高
            int dstWidth = 500;
            int dstHeight = 200;
            //创建目的图像
            BufferedImage distImage = new BufferedImage(dstWidth, dstHeight, BufferedImage.TYPE_INT_RGB);
            //目标图像画笔画图,把原图像画出来
            Graphics2D graphics2D = (Graphics2D) distImage.getGraphics();
            graphics2D.drawImage(src,0, 0, dstWidth, dstHeight, null);
            //添加文字水印
            graphics2D.setColor(Color.red);
            graphics2D.drawString("V哥教育", 30, 30);
            //保存到文件
            ImageIO.write(distImage,"png", new File("C:\Users\ZHANGMINGDA\Desktop\日报\订单详情-smal.png"));
        }
    }
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  • 原文地址:https://www.cnblogs.com/zhangmingda/p/14744500.html
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