图片转换成二进制,二进制转换为图片

Posted 2021-01-29 nancheng

package com.cn.Tetute.uitl;
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 TestImageBinary { 
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("D:/ASC1.jpg"); 
BufferedImage bi; 
try { 
bi = ImageIO.read(f); 
ByteArrayOutputStream baos = new ByteArrayOutputStream(); 
ImageIO.write(bi, "jpg", baos); 
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("D:/ASC2.jpg");//可以是jpg,png,gif格式 
ImageIO.write(bi1, "jpg", w2);//
} catch (IOException e) { 
e.printStackTrace(); 
} 
} 

}