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从byte[]到BufferedImage的转换涉及InputStream和ImageIO.read的使用，如下所示：
InputStream in = new ByteArrayInputStream(imageInByte);
BufferedImage bImageFromConvert = ImageIO.read(in);
以下示例将读取一个名为“ darksouls.jpg ”的图像文件，将其转换为字节数组，然后重新使用转换后的字节数组，并将其转换回新的BufferedImage ，然后将其保存回新的名称“ new-darksouls .jpg ”。
package com.mkyong.image;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import javax.imageio.ImageIO;
public class ImageTest {
public static void main(String[] args) {
try {
byte[] imageInByte;
BufferedImage originalImage = ImageIO.read(new File(
"c:/darksouls.jpg"));
// convert BufferedImage to byte array
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ImageIO.write(originalImage, "jpg", baos);
baos.flush();
imageInByte = baos.toByteArray();
baos.close();
// convert byte array back to BufferedImage
InputStream in = new ByteArrayInputStream(imageInByte);
BufferedImage bImageFromConvert = ImageIO.read(in);
ImageIO.write(bImageFromConvert, "jpg", new File(
"c:/new-darksouls.jpg"));
} catch (IOException e) {
System.out.println(e.getMessage());
}
}
}
标签： 缓冲 图像imageio Java
翻译自: https://mkyong.com/java/how-to-convert-byte-to-bufferedimage-in-java/
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