图片进行Base64编码和解码

﹏ヽ暗。殇╰゛Y 2021-09-07 06:16 625阅读 0赞

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;
            }
        }