使用 python 2.7 验证和嵌入 Tableau Rest API

Question

我正在尝试使用 Tableau 提供的示例代码通过 Tableau Rest API 来验证和生成受信任的令牌。我正在使用 python v2.7

下面是代码（与Tableau提供的示例相同）-：

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!')

但是我收到如下错误：

    Traceback (most recent call last):
  File "C:/Extract Api/testapi.py", line 42, in <module>
    req = urlopen(req)
  File "C:\Python27\lib\urllib2.py", line 154, in urlopen
    return opener.open(url, data, timeout)
  File "C:\Python27\lib\urllib2.py", line 429, in open
    response = self._open(req, data)
  File "C:\Python27\lib\urllib2.py", line 447, in _open
    '_open', req)
  File "C:\Python27\lib\urllib2.py", line 407, in _call_chain
    result = func(*args)
  File "C:\Python27\lib\urllib2.py", line 1228, in http_open
    return self.do_open(httplib.HTTPConnection, req)
  File "C:\Python27\lib\urllib2.py", line 1198, in do_open
    raise URLError(err)
URLError: <urlopen error [Errno 11001] getaddrinfo failed>

我确信我使用的是正确的 Username/Password。另外，我可以使用我的浏览器访问 URL。

请多多指教。

Answer 1

您的 .format() 调用造成了错误 url。在 Python REPL 中对此进行测试，我得到以下信息：

$ 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 或您调用 .format() 的字符串的开头删除 "http://"。错误 <urlopen error [Errno 11001] getaddrinfo failed> 让我明白这可能是一个 URL 问题而不是 Tableau 问题。

Answer 2

已解决。

我在 api v2.4 中使用 Tableau v10.0。我将 api 更改为 2.3 版并且它有效。

感谢您的帮助。

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