使用 python 2.7 进行身份验证和嵌入 Tableau Rest API

Question

我正在尝试使用Tableau提供的示例代码使用Tableau Rest API身份验证和生成受信任的令牌。我正在使用Python v2.7

以下是代码（与Tableau提供的样本相同） - ：

try:
    from urllib.request import urlopen, Request
except ImportError:
        from urllib2 import urlopen, Request
import xml.etree.ElementTree as ET # For parsing XML responses
server_name = "http://dashboard.crgroup.com"
user_name = "abc"    
password = "abc"
site_url_id = "default_site"          
signin_url = "http://{server}/api/2.4/auth/signin".format(server=server_name)
request_xml = ET.Element('tsRequest')
credentials = ET.SubElement(request_xml, 'credentials',
                            name=user_name, password=password)
site_element = ET.SubElement(credentials, 'site',
                             contentUrl=site_url_id)
request_data = ET.tostring(request_xml)
req = Request(signin_url, data=request_data)
req = urlopen(req)
server_response = req.read()
response_xml = ET.fromstring(server_response)
token = response_xml.find('.//t:credentials',
                          namespaces={'t': "http://tableau.com/api"}).attrib['token']
site_id = response_xml.find('.//t:site',
                            namespaces={'t': "http://tableau.com/api"}).attrib['id']
print('Sign in successful!')
print('tToken: {token}'.format(token=token))
print('tSite ID: {site_id}'.format(site_id=site_id))
headers = {'X-tableau-auth': token}
signout_url = "http://{server}/api/2.4/auth/signout".format(server=server_name)
req = Request(signout_url, headers=headers, data=b'')
req = urlopen(req)
print('Sign out successful!')

但是我遇到了以下错误 - ：

    Traceback (most recent call last):
  File "C:/Extract Api/testapi.py", line 42, in <module>
    req = urlopen(req)
  File "C:Python27liburllib2.py", line 154, in urlopen
    return opener.open(url, data, timeout)
  File "C:Python27liburllib2.py", line 429, in open
    response = self._open(req, data)
  File "C:Python27liburllib2.py", line 447, in _open
    '_open', req)
  File "C:Python27liburllib2.py", line 407, in _call_chain
    result = func(*args)
  File "C:Python27liburllib2.py", line 1228, in http_open
    return self.do_open(httplib.HTTPConnection, req)
  File "C:Python27liburllib2.py", line 1198, in do_open
    raise URLError(err)
URLError: <urlopen error [Errno 11001] getaddrinfo failed>

我很肯定我正在使用正确的用户名/密码。另外，我可以使用浏览器访问URL。

请建议。

Answer 1

您的.format()调用正在创建不良的URL。在python repl中测试这一点，我得到以下内容：

$ server_name = "http://dashboard.crgroup.com" $ "http://{server}/api/2.4/auth/signin".format(server=server_name) (output): 'http://http://dashboard.crgroup.com/api/2.4/auth/signin'

您需要从server_name或从呼叫.format()的字符串开头删除" http：//"。<urlopen error [Errno 11001] getaddrinfo failed>的错误使我陷入了这样一个事实，可能是一个URL问题，而不是Tableau问题。

Answer 2

它已解决。

i与API v2.4一起使用Tableau V10.0。我将API更改为版本2.3，并且可以使用。

感谢您的帮助。