图片进行Base64编码和解码

Base64和图片进行转换

public static void main(String[] args) {
        //加密
        String strImg = getImageStr("C:\\Users\\admin-xu\\Desktop\\qq截图.jpg");
        System.out.println(strImg);
        System.out.println("-----------------------------------------------------------------------------");
        //解密
        generateImage(strImg);
        System.out.println("-----------------------------------------------------------------------------");
    }

    //加密
    public static String getImageStr(String imgFile) {
        InputStream inputStream = null;
        byte[] data = null;
        try {
            inputStream = new FileInputStream(imgFile);
            data = new byte[inputStream.available()];
            inputStream.read(data);
            inputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        // 加密
        BASE64Encoder encoder = new BASE64Encoder();
        return encoder.encode(data);
    }

    //解密   //base64字符串转化成图片  imgStr base64编码字符串
    public static boolean generateImage(String imgStr) {
        if (imgStr == null){
            return false;
        }
        BASE64Decoder decoder = new BASE64Decoder();
        try {
            byte[] b = decoder.decodeBuffer(imgStr);
             // 处理数据
             for (int i = 0; i < b.length; ++i) {
                 if (b[i] < 0) {
                     b[i] += 256;
                 }
             }
            OutputStream out = new FileOutputStream("F:/86619-107.jpg");
            out.write(b);
            out.flush();
            out.close();
            return true;
        } catch (Exception e) {
            return false;
        }
    }