使用 urllib 发出 post 请求

我正在尝试向 API 提供商提出请求

curl "https://api.infermedica.com/dev/parse" \
  -X "POST" \
  -H "App_Id: 4c177c" -H "App_Key: 6852599182ba85d70066986ca2b3" \
  -H "Content-Type: application/json" \
  -d '{"text": "i feel smoach pain but no couoghing today"}'    

这个curl请求给出响应。

但是当我尝试在代码中提出同样的请求时

self.headers = { "App_Id": "4c177c", "App_Key": "6852599182ba85d70066986ca2b3", "Content-Type": "application/json", "User-Agent": "M$

self.url = "https://api.infermedica.com/dev/parse"

data = { "text": text }
json_data = json.dumps(data)
req = urllib2.Request(self.url, json_data.replace(r"\n", "").replace(r"\r", ""), self.headers)
response = urllib2.urlopen(req).read()

它给

Traceback (most recent call last):
  File "symptoms_infermedia_api.py", line 68, in <module>
    SymptomsInfermedia().getResponse(raw_input("Enter comment"))
  File "symptoms_infermedia_api.py", line 39, in getResponse
    response = urllib2.urlopen(req).read()
  File "/usr/lib/python2.7/urllib2.py", line 127, in urlopen
    return _opener.open(url, data, timeout)
  File "/usr/lib/python2.7/urllib2.py", line 410, in open
    response = meth(req, response)
  File "/usr/lib/python2.7/urllib2.py", line 523, in http_response
    'http', request, response, code, msg, hdrs)
  File "/usr/lib/python2.7/urllib2.py", line 448, in error
    return self._call_chain(*args)
  File "/usr/lib/python2.7/urllib2.py", line 382, in _call_chain
    result = func(*args)
  File "/usr/lib/python2.7/urllib2.py", line 531, in http_error_default
    raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
urllib2.HTTPError: HTTP Error 403: Forbidden

这将是使用 python 的等效请求requests图书馆。

url = "https://api.infermedica.com/dev/parse"
headers = {
    'App_Id': '4c177c',
    'App_Key': '6852599182ba85d70066986ca2b3',
    'Content-Type': 'application/json',
}
data = {'text': 'i feel stomach pain but no coughing today'}

r = requests.post(url, headers=headers, data=json.dumps(data))
print r.status_code
print r.json()

但你真正的问题是你为他们的 api 使用了错误的标头键。它是App-Id and App-key, not App_Id and App_key。它看起来像这样：

headers = {
    'App-Id': 'xx', 
    'App-key': 'xxxx', 
    'Accept': 'application/json', 
    'Content-Type': 'application/json',
    'Dev-Mode': 'true'}

data = {'text': 'i feel stomach pain but no coughing today'}
r = requests.post(url, headers=headers, data=json.dumps(data))

另外值得注意的是，他们有一个蟒蛇API https://github.com/infermedica/python-api这一切都会为你完成。