Java Base64 和 File 之间互转

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1、Base64 转 File

public File base64ToFile(String base64, String filePath) {
        File file = new File(filePath);
        byte[] buffer;
        try {
            BASE64Decoder base64Decoder = new BASE64Decoder();
            buffer = base64Decoder.decodeBuffer(base64);
            FileOutputStream out = new FileOutputStream(filePath);
            out.write(buffer);
            out.close();
        } catch (Exception e) {
            Log.e("TAG", "异常信息:" + e.getMessage());
        }
        return file;
    }

2、File 转 Base64

public String fileToBase64(String filePath) {
	File file = new File(filePath);
	FileInputStream inputFile;
	try {
		inputFile = new FileInputStream(file);
		byte[] buffer = new byte[inputFile.available()];
		inputFile.read(buffer);
		inputFile.close();
		BASE64Encoder base64Encoder = new BASE64Encoder();
		Log.i("encodeFileToBase64", "encode = " + base64Encoder.encode(buffer));
		return base64Encoder.encode(buffer);
	} catch (Exception e) {
		Log.e("TAG", "异常信息:" + e.getMessage());
	}
	return "";
}

文章来源:https://blog.csdn.net/victor_E_N_01185/article/details/130274460
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