Java Base64圖片加密解密原始碼註解
阿新 • • 發佈:2019-01-02
需要匯入的包
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;
引數介紹
static BASE64Encoder encoder = new sun.misc.BASE64Encoder(); //加密
static BASE64Decoder decoder = new sun.misc.BASE64Decoder(); //解密
主要方法
private static String getImageBinary(File f){ 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; }
private static File base64StringToImage(String base64String){ try { byte[] bytes1 = decoder.decodeBuffer(base64String); ByteArrayInputStream bais = new ByteArrayInputStream(bytes1); BufferedImage bi1 =ImageIO.read(bais); File w2 = new File("D://ok.png");//可以是jpg,png,gif格式 ImageIO.write(bi1, "jpg", w2);//不管輸出什麼格式圖片,此處不需改動 return w2; } catch (IOException e) { e.printStackTrace(); } return null; }
測試
public static void main(String[] args) {
System.out.println(getImageBinary(new File("D://flyStar.jpg")));
base64StringToImage(getImageBinary(new File("D://flyStar.jpg")));
}
~~註釋: 分別實現flyStar.jpg圖片的加密解密