Java实现图片与二进制的互相转换

• Z时代
• 2024-01-10
• 分类：综合

本文实例为大家分享了Java将图片转二进制再将二进制转成图片，供大家参考，具体内容如下

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());  
  }  
  static String getImageBinary(){  
    File f = new File("c://20090709442.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;  
  }  
  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("c://QQ.bmp");//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();  
    }  
  }  
}

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