Yelp API产生无效签名错误

在查看了几篇在线文章，StackOverflow和Yelp Google Group之后，我一直无法找出问题，因为我的Yelp API请求产生Invalid Signature错误。Yelp API产生无效签名错误

这里是确切的错误：

{'error': {'text': 'Signature was invalid', 'description': 'Invalid signature. Expected signature base string: [some text here with keys]}}

而且我已经写了与它一起去的代码：

import rauth 
import time 

def get_results(): 

    #Obtain these from Yelp's manage access page 
    consumer_key = '' 
    consumer_secret = '' 
    token = '' 
    token_secret = '' 

    session = rauth.OAuth1Session(
      consumer_key = consumer_key 
      ,consumer_secret = consumer_secret 
      ,access_token = token 
      ,access_token_secret = token_secret) 

    request = session.get("http://api.yelp.com/v2/search?location=Boston&term=food") 

    #Transforms the JSON API response into a Python dictionary 
    data = request.json() 
    print(data) 
    session.close() 

    return data 

if __name__=="__main__": 
    print(get_results())

那么究竟是什么造成这个错误？在这次尝试之前，我做了一些修改，而我之前的尝试也得到了类似的错误;除了有一次我只得到了一个“无效签名”的错误，没有“期待签名基本字符串”消息

来源

2015-10-16 freddiev4

有更多的步骤来认证为每docs

提出请求

Each request must contain the following OAuth protocol parameters:

OAuth Parameter Value 
oauth_consumer_key Your OAuth consumer key (from Manage API Access). 
oauth_token The access token obtained (from Manage API Access). 
oauth_signature_method hmac-sha1 
oauth_signature The generated request signature, signed with the oauth_token_secret obtained (from Manage API Access). 
oauth_timestamp Timestamp for the request in seconds since the Unix epoch. 
oauth_nonce A unique string randomly generated per request.

These parameters may be passed in the HTTP (Authorization) header as URL query keys or in the POST data. Generating the OAuth signature is done by applying the HMAC-SHA1 with the oauth_token_secret. You may view your OAuth consumer key at Manage API Access. OAuth libraries are available to generate these requests.

您没有通过oauth_timestamp这是必需的或应用HMAC-SHA1，因此您得到Invalid Signature错误，上面的文档清楚地列出了您需要发送的内容。

import requests 
import oauth2 

def request(url, url_params=None): 
    consumer_key = "" 
    consumer_secret = "" 
    token = "" 
    token_secret ="" 
    url_params = url_params or {} 
    consumer = oauth2.Consumer(consumer_key, consumer_secret) 
    oauth_request = oauth2.Request(method="GET", url=url, parameters=url_params) 

    oauth_request.update(
     { 
      'oauth_nonce': oauth2.generate_nonce(), 
      'oauth_timestamp': oauth2.generate_timestamp(), 
      'oauth_token': token, 
      'oauth_consumer_key': consumer_key 
     } 
    ) 
    token = oauth2.Token(token, token_secret) 
    oauth_request.sign_request(oauth2.SignatureMethod_HMAC_SHA1(), consumer, token) 
    signed_url = oauth_request.to_url() 

    print(u'Querying {0} ...'.format(url)) 

    return requests.get(signed_url).json()

其中使用：

还有一个实际python yelp api，你可以使用，但让你可以使用下面基于来自example code:的request功能例如使用oauth2和requests做出请求的请求您的网址输出JSON的整体负载，这开始是：

Querying http://api.yelp.com/v2/search?location=Boston&term=food ... 
{'region': {'center': {'longitude': -71.05460875, 'latitude': 42.35028894954365}, 'span': {'latitude_delta': 0.0325510910039668, 'longitude_delta': 0.04668455000000904}}, 'total': 8351, 'businesses': [{'name': "Giacomo's Ristorante", 'url': 'http://www.yelp.com/biz/giacomos-ristorante-boston', 'mobile_url': 'http://m.yelp.com/biz/giacomos-ristorante-boston', 'rating_img_url_large': 'http://s3-media2.fl.yelpcdn.com/assets/2/www/img/ccf2b76faa2c/ico/stars/v1/stars_large_4.png', 'phone': 
............................................................... 
...............................................................

我不知道如果API支持Python 3，但是代码ABO ve已经用python3和python2进行了测试，并且它工作正常，要安装oauth2，你可以简单地使用pip install oauth2，如果你没有安装它，请求和请求一样。

来源

2015-10-21 17:33:49

很好的答案，非常详细。 – dotcomly

@Dotcomly，谢谢。 –

太棒了！这工作！谢谢@PadraicCunningham – freddiev4

另一个常见问题是服务器时间不同步。在Linux上，一个可以运行

sudo ntpdate -s time.nist.gov

来源

2016-04-24 03:46:02

Yelp API产生无效签名错误

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