java图片二进制相互转换

java图⽚⼆进制相互转换import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
public class A {
static BASE64Encoder encoder = new sun.misc.BASE64Encoder();
static BASE64Decoder decoder = new sun.misc.BASE64Decoder();
public static void main(String[] args) {
System.out.println(getImageBinary());
base64StringToImage(getImageBinary());
}
/**
* 将图⽚转换成⼆进制
*
* @return
*/
static String getImageBinary() {
File f = new File("e:/1.jpg");
BufferedImage bi;
try {
bi = ImageIO.read(f);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ImageIO.write(bi, "jpg", baos); //经测试转换的图⽚是格式这⾥就什么格式，否则会失真
byte[] bytes = baos.toByteArray();
return encoder.encodeBuffer(bytes).trim();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
/**
* 将⼆进制转换为图⽚
*
* @param base64String
*/
static void base64StringToImage(String base64String) {
try {
byte[] bytes1 = decoder.decodeBuffer(base64String);
ByteArrayInputStream bais = new ByteArrayInputStream(bytes1);
BufferedImage bi1 = ImageIO.read(bais);
File w2 = new File("e://QQ.jpg");// 可以是jpg,png,gif格式
ImageIO.write(bi1, "jpg", w2);// 不管输出什么格式图⽚，此处不需改动
} catch (IOException e) {
e.printStackTrace();
}
}
}。