java 实现图片加文字水印

工具类WaterMarkUtils 字体 大小可改。
//width长 height宽 根据pressText水印名称长度调整
水印我是放右下角，如果觉得不喜欢可以自己去调整位置

import lombok.extern.slf4j.Slf4j;
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;


@Slf4j
public class WaterMarkUtils {

    public static void pressText(String targetImg) {
        try {
            File file = new File(targetImg);
            String pressText = "@水印名称";
            Image src = ImageIO.read(file);
            int weidth = src.getWidth(null);
            int height = src.getHeight(null);
            BufferedImage image = new BufferedImage(weidth, height, BufferedImage.TYPE_INT_RGB);
            Graphics g = image.createGraphics();
            g.drawImage(src, 0, 0, weidth, height, null);
            g.setColor(new Color(205, 205, 205));
            g.setFont(new Font("宋体", 0, 40));
            //width长 height宽 根据pressText水印名称长度调整
            g.drawString(pressText, image.getWidth() - 240, image.getHeight() - 35);
            g.dispose();
            ImageIO.write(image, "jpeg", new FileOutputStream(targetImg));

        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
    	//加水印图片路径
        pressText("/Users/zilei/Desktop/files/图片/e50df4adddc30f56f3006b83b00857fd.jpeg");
    }
}

效果图：