java图片转为二进制 java图片转二进制流

Java实现图片与二进制的互相转换

发布于 2020-2-28|

复制链接

摘记: 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

```java
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 Te ..

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

```java
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();
}
}
}
```