Open HanteIsHante opened 6 years ago
获取MD5:
fun getFileMd5(file: File): String? { var value: String? = null var fileInputStream: FileInputStream? = null try { fileInputStream = FileInputStream(file) val byteBuffer = fileInputStream.channel.map(FileChannel.MapMode.READ_ONLY, 0, file.length()) val md5 = MessageDigest.getInstance("MD5") md5.update(byteBuffer) val bi = BigInteger(1, md5.digest()) value = bi.toString(16) } catch (ignore: Exception) { } finally { if (null != fileInputStream) { try { fileInputStream.close() } catch (ignore: IOException) { } } } return value }
上面方法产生的MD5值,如果首位是0,则会发生省略现象
例:0724b7ec028c33f072ed2e6b3fe1a41a, 获取到的是 724b7ec028c33f072ed2e6b3fe1a41a
获取MD5:
上面方法产生的MD5值,如果首位是0,则会发生省略现象