BufferedImage --- base64(互相轉換)

/**
     * BufferedImage 編碼轉換爲 base64
     * @param bufferedImage
     * @return
     */
    private static String BufferedImageToBase64(BufferedImage bufferedImage) {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();//io流
        try {
            ImageIO.write(bufferedImage, "png", baos);//寫入流中
        } catch (IOException e) {
            e.printStackTrace();
        }
        byte[] bytes = baos.toByteArray();//轉換成字節
        BASE64Encoder encoder = new BASE64Encoder();
        String png_base64 = encoder.encodeBuffer(bytes).trim();//轉換成base64串
        png_base64 = png_base64.replaceAll("\n", "").replaceAll("\r", "");//刪除 \r\n
        System.out.println("值爲：" + "data:image/jpg;base64," + png_base64);
        return "data:image/jpg;base64," + png_base64;
    }

    /**
     * base64 編碼轉換爲 BufferedImage
     * @param base64
     * @return
     */
    private  static BufferedImage base64ToBufferedImage(String base64) {
        BASE64Decoder decoder = new sun.misc.BASE64Decoder();
        try {
            byte[] bytes1 = decoder.decodeBuffer(base64);
            ByteArrayInputStream bais = new ByteArrayInputStream(bytes1);
            return ImageIO.read(bais);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }