Luc*_*tos 2 python authentication here-api
我有一个有效的 HereMaps API 密钥,并且正在使用 python requestslib 对异步调用后返回的链接执行 GET 请求。我试图像这样执行它:
尽管我之前已经提供了正确的密钥来生成上面的此链接,但上面此请求的结果返回:
{
"error": "Unauthorized",
"error_description": "No credentials found"
}
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我们应该如何进行身份验证以检查 Matrix Routing v8 API 上异步请求的状态结果?
小智 6
您可以使用两种身份验证方法来使用 HERE API:API 密钥和 OAuth 令牌。
由于处理凭据的方式,当您发出异步请求时,您需要在使用 API 密钥时禁用自动客户端重定向,因为客户端不会再次将参数添加到apiKey它已重定向到的 URL。
使用 Python 和 时,这个问题有很多解决方案requests,下面是一个可能有帮助的完整示例:
import requests, time
api_key = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
# "Profile mode (car fastest)" example request
request = {
"origins": [{"lat": 52.5309, "lng": 13.3849}, {"lat": 54.0924, "lng": 12.0991}],
"destinations": [
{"lat": 51.3397, "lng": 12.3731},
{"lat": 51.0504, "lng": 13.7373},
],
"regionDefinition": {"type": "world"},
"profile": "carFast",
}
# Using a Session object allows you to persist certain parameters accross requests
# see: https://requests.readthedocs.io/en/master/user/advanced/
session = requests.Session()
# Add `?apiKey=xxxxxx` to all requests
session.params = {"apiKey": api_key}
# Raise an exception for any non 2xx or 3xx HTTP return codes
session.hooks = {"response": lambda r, *args, **kwargs: r.raise_for_status()}
# Send an asynchronous request, see: https://developer.here.com/documentation/matrix-routing-api/8.3.0/dev_guide/topics/get-started/asynchronous-request.html
status_response = session.post(
"https://matrix.router.hereapi.com/v8/matrix", json=request
).json()
# Polling for the job status for 100 times
# You might want to use exponential back-off instead of time.sleep
for _ in range(0, 100):
# do not follow the redirect here
status_response = session.get(
status_response["statusUrl"], allow_redirects=False
).json()
if status_response["status"] == "completed":
# download the result
matrix_response = session.get(status_response["resultUrl"]).json()
print(matrix_response)
break
elif status_response["accepted"] or status_response["inProgress"]:
continue
else:
print(f"An error occured: {status_response}")
break
time.sleep(0.5) # sleep for 500 ms
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