折腾：
【未解决】Python实现小花生中addSignature的md5加密生成签名的逻辑
期间，需要去找找Python中如何计算字符串的md5值。
python java md5
# Python 3 code to demonstrate the
# working of MD5 (string - hexadecimal)
import hashlib
# initializing string
str = "GeeksforGeeks"
# encoding GeeksforGeeks using encode()
# then sending to md5()
result = hashlib.md5(str.encode())
# printing the equivalent hexadecimal value.
print("The hexadecimal equivalent of hash is : ", end ="")
print(result.hexdigest())->
The hexadecimal equivalent of hash is : f1e069787ece74531d112559945c6871
去试试
101 – Python Vs Java Md5 Hexdigest – pad.yohdah.com
【总结】
此处用代码：
from hashlib import md5
def generateSignature(timestampInt, paramString):
userId = "1134723"
timestamp = "%s" % timestampInt
localObject = "/Reading.svc/parentChildReadingBookQuery2"
fixedSault = “AyGt7ohMR!xx#N"
strToCalc = userId + timestamp + localObject + paramString + fixedSault
print("strToCalc=%s" % strToCalc)
encodedStr = strToCalc.encode()
# encodedStr = strToCalc.encode("UTF-8")
print("encodedStr=%s" % encodedStr)
md5Result = md5(encodedStr)
print("md5Result=%s" % md5Result) # md5Result=<md5 HASH object @ 0x1044f1df0>
md5Hexdigest = md5Result.hexdigest()
print("md5Hexdigest=%s" % md5Hexdigest) # md5Hexdigest=585ad2765d147c7e918478a4ce843ed2
return md5Hexdigest
if __name__ == "__main__":
timestampInt = 1553845899
paramString = "{\"userId\":\"1134723\",\"fieldName\":\"\",\"fieldValue\":\"全部类别\",\"theStageOfTheChild\":\"\",\"parentalEnglishLevel\":\"\",\"supportingResources\":\"有音频\",\"offset\":20,\"limit\":10}"
generatedSignature = generateSignature(timestampInt, paramString)
print("timestampInt=%d, paramString=%s-> %s" % (timestampInt, paramString, generatedSignature))是可以生成md5值的：
timestampInt=1553845899, paramString={"userId":"1134723","fieldName":"","fieldValue":"全部类别","theStageOfTheChild":"","parentalEnglishLevel":"","supportingResources":"有音频","offset":20,"limit":10}-> 585ad2765d147c7e918478a4ce843ed2【后记】
但是生成的值是：
585ad2765d147c7e918478a4ce843ed2
不是希望的：
c687d5dfa015246e6bdc6b3c27c2afea
继续参考：
试试.digest()
结果：
md5Digest = md5Result.digest()
得到的却是byte的：
md5Digest=b'XZ\xd2v]\x14|~\x91\x84x\xa4\xce\x84>\xd2'
看来本身md5方法没啥问题。
怀疑是参数不对，所以继续研究参数。
然后去：
【已解决】为何Python中32字节的md值和小花生中getMD5Str计算出的md5值不同
后来证明上述计算方法是对的，只是参数问题而已。
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