java 实现base64图片转BufferedImage

A：

可以使用Java的Base64类将Base64编码的图片字符串转换为字节数组，然后使用ImageIO类将字节数组转换为BufferedImage。以下是示例代码：

import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.util.Base64;
import javax.imageio.ImageIO;

public class Base64ToBufferedImage {
    public static BufferedImage convert(String base64Image) throws IOException {
        String[] parts = base64Image.split(",");
        String imageString = parts[1];

        byte[] decodedBytes = Base64.getDecoder().decode(imageString);

        ByteArrayInputStream bis = new ByteArrayInputStream(decodedBytes);
        BufferedImage image = ImageIO.read(bis);

        bis.close();

        return image;
    }
}

使用方法：

String base64Image = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg==";
BufferedImage image = Base64ToBufferedImage.convert(base64Image);