Android 中 Base64的操作应用

 

 

    /**
     * <p>将文件转成base64 字符串</p>
     * @param path 文件路径
     * @return
     * @throws Exception
     */
    public static String encodeBase64File(String path) throws Exception {
        File  file = new File(path);
        FileInputStream inputFile = new FileInputStream(file);
        byte[] buffer = new byte[(int)file.length()];
        inputFile.read(buffer);
        inputFile.close();
//        return new android.util.Base64;
        MyUtils.myLog("------------", file+"===="+ "");
        return android.util.Base64.encodeToString(buffer, Base64.DEFAULT);
    }
    /**
     * <p>将base64字符解码保存文件</p>
     * @param base64Code
     * @param targetPath
     * @throws Exception
     */
    public static void decoderBase64File(String base64Code,String targetPath) throws Exception {
        byte [] baseByte = android.util.Base64.decode(base64Code, Base64.DEFAULT);
        
//        byte[] buffer = new BASE64Decoder().decodeBuffer(base64Code);
        FileOutputStream out = new FileOutputStream(targetPath);
        out.write(baseByte);
        out.close();
    }
    /**
     * <p>将base64字符保存文本文件</p>
     * @param base64Code
     * @param targetPath
     * @throws Exception
     */
    public static void toFile(String base64Code,String targetPath) throws Exception {
        byte[] buffer = base64Code.getBytes();
        FileOutputStream out = new FileOutputStream(targetPath);
        out.write(buffer);
        out.close();
    }
    public static void main(String[] args) {
        try {
            String base64Code =encodeBase64File("D:\\1.jpg");
            System.out.println(base64Code);
            decoderBase64File(base64Code, "D:\\2.jpg");
            toFile(base64Code, "D:\\three.txt");            
        } catch (Exception e) {
            e.printStackTrace();
        }
    }