Java生成水印

package src.wmf.test;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.*;

/**
 * @author
 * @version 1.0
 * @date 2021/4/23 17:22
 */
public class HelloWorld {

    public static void main(String[] args) {
        markImageByText("张菊", "D:\\Users\\31330\\IdeaProjects\\test\\hello\\src\\main\\resources\\01.jpg", "02.jpg", 0, Color.red, "jpg");
        System.out.println("-----结束-----");
    }

    /**
     * @param logoText     要写入的文字
     * @param srcImgPath   源图片路径
     * @param newImagePath 新图片路径
     * @param degree       旋转角度
     * @param color        字体颜色
     * @param formaName    图片后缀
     */
    public static void markImageByText(String logoText, String srcImgPath, String newImagePath, Integer degree, Color color, String formaName) {
        InputStream is = null;
        OutputStream os = null;
        try {
            // 1、源图片
            Image srcImg = ImageIO.read(new File(srcImgPath));
            BufferedImage buffImg = new BufferedImage(srcImg.getWidth(null), srcImg.getHeight(null), BufferedImage.TYPE_INT_RGB);
            // 2、得到画笔对象
            Graphics2D g = buffImg.createGraphics();
            // 3、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), java.awt.Image.SCALE_SMOOTH), 0, 0, null);
            // 4、设置水印旋转
            if (null != degree) {
                g.rotate(Math.toRadians(degree), buffImg.getWidth() / 2, buffImg.getHeight() / 2);
            }
            // 5、设置水印文字颜色
            g.setColor(color);
            // 6、设置水印文字Font
            g.setFont(new java.awt.Font("宋体", java.awt.Font.BOLD, 50));
            // 7、设置水印文字透明度
            g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.85f));
            // 8、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, 10, 50);
            // 9、释放资源
            g.dispose();
            // 10、生成图片
            os = new FileOutputStream(newImagePath);
            ImageIO.write(buffImg, formaName, os);
        } 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();
            }
        }
    }
}