亚马逊产品广告API签名

Question

我正在尝试为亚马逊产品广告API制作一个签名,已经花了几个小时,我仍然得到一个403 - 任何人都可以快速查看代码并告诉我,如果我做错了什么吗？

这是我用来创建签名的功能

def create_signature(service, operation, version, search_index, keywords, associate_tag, time_stamp, access_key):
start_string = "GET\n" + \
               "webservices.amazon.com\n" + \
               "/onca/xml\n" + \
               "AWSAccessKeyId=" + access_key + \
               "&AssociateTag=" + associate_tag + \
               "&Keywords=" + keywords + \
               "&Operation=" + operation + \
               "&SearchIndex=" + search_index + \
               "&Service=" + service + \
               "&Timestamp=" + time_stamp + \
               "&Version=" + version

dig = hmac.new("MYSECRETID", msg=start_string, digestmod=hashlib.sha256).digest()
sig = urllib.quote_plus(base64.b64encode(dig).decode())

return sig;

这是我用来返回请求字符串的函数

def ProcessRequest(request_item):
    start_string = "http://webservices.amazon.com/onca/xml?" + \
                   "AWSAccessKeyId=" + request_item.access_key + \
                   "&AssociateTag=" + request_item.associate_tag + \
                   "&Keywords=" + request_item.keywords + \
                   "&Operation=" + request_item.operation + \
                   "&SearchIndex=" + request_item.search_index + \
                   "&Service=" + request_item.service + \
                   "&Timestamp=" + request_item.time_stamp + \
                   "&Version=" + request_item.version + \
                   "&Signature=" + request_item.signature
    return start_string;

这是运行代码

_AWSAccessKeyID = "MY KEY"
_AWSSecretKey= "MY SECRET KEY"

def ProduceTimeStamp():
    time = datetime.datetime.now().isoformat()
    return time;

item = Class_Request.setup_request("AWSECommerceService", "ItemSearch", "2011-08-01", "Books", "harry%20potter", "PutYourAssociateTagHere", ProduceTimeStamp(), _AWSAccessKeyID)
item2 = Class_Request.ProcessRequest(item)

它在403处产生的示例Web请求是: -

http://webservices.amazon.com/onca/xml?AWSAccessKeyId=AKIAIY4QS5QNDAI2NFLA&AssociateTag=PutYourAssociateTagHere&Keywords=harry%20potter&Operation=ItemSearch&SearchIndex=Books&Service=AWSECommerceService&Timestamp=2015-02-26T23:53:14.330000&Version=2011-08-01&Signature=KpC%2BUsyJcw563LzIgxf7GkYI5IV6EfmC0%2FsH8LuP%2FEk%3D

还有一个名为ClassRequest的holder类,它只为每个请求字段都有一个字段

如果有人有兴趣,我所遵循的指示就在这里: - http://docs.aws.amazon.com/AWSECommerceService/latest/DG/rest-signature.html

我希望有人可以提供帮助,我是Python新手,有点迷失

Answer 1

您只需使用现有的解决方案之一即可

• 宽吻
• python-amazon-product-api
• python-amazon-simple-product-api

可从PyPI获取。

或者

将您的解决方案与其中之一进行比较： https://bitbucket.org/basti/python-amazon-product-api/src/41529579819c75ff4f03bc93ea4f35137716ebf2/amazonproduct/api.py ?at=default#cl-143

例如，您的时间戳看起来有点短。