您确定您的键和输入是相同的并且在java和python中都正确编码吗？
HMAC-SHA256在两个平台上均相同。
爪哇
Mac sha256_HMAC = Mac.getInstance("HmacSHA256");
SecretKeySpec secretKey = new SecretKeySpec("1234".getBytes(), "HmacSHA256");
sha256_HMAC.init(secretKey);
byte[] hash = sha256_HMAC.doFinal("test".getBytes());
String check = Hex.encodeHexString(hash);
System.out.println(new String(check));
Output
24c4f0295e1bea74f9a5cb5bc40525c8889d11c78c4255808be00defe666671f
蟒蛇
print hmac.new("1234", "test", hashlib.sha256).hexdigest();
Output
24c4f0295e1bea74f9a5cb5bc40525c8889d11c78c4255808be00defe666671f
602392714
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