java hmac-sha1算法实现，javahmac-sha1算法,oauth2使用hmac

java hmac-sha1算法实现，javahmac-sha1算法,oauth2使用hmac

oauth2使用hmac-sha1算法：

SecretKeySpec keySpec = new SecretKeySpec(        "qnscAdgRlkIhAUPY44oiexBKtQbGY0orf7OV1I50".getBytes(),        "HmacSHA1");Mac mac = Mac.getInstance("HmacSHA1");mac.init(keySpec);byte[] result = mac.doFinal("foo".getBytes());BASE64Encoder encoder = new BASE64Encoder();System.out.println(encoder.encode(result));