我一直在尝试使用Scrapy从Google Analytics获取一些数据，尽管我完全是Python的新手，但我已经取得了一些进展。
我现在可以通过Scrapy登录到Google Analytics，但我需要进行一个AJAX请求来获取我想要的数据。我已经尝试使用下面的代码复制浏览器的HTTP请求头，但似乎不起作用，我的错误日志显示：
too many values to unpack
能有人帮忙吗？我已经折腾了两天了，感觉很接近但也很困惑。
以下是代码：
from scrapy.spider import BaseSpider
from scrapy.selector import HtmlXPathSelector
from scrapy.http import FormRequest, Request
from scrapy.selector import Selector
import logging
from super.items import SuperItem
from scrapy.shell import inspect_response
import json
class LoginSpider(BaseSpider):
name = 'super'
start_urls = ['https://accounts.google.com/ServiceLogin?service=analytics&passive=true&nui=1&hl=fr&continue=https%3A%2F%2Fwww.google.com%2Fanalytics%2Fweb%2F%3Fhl%3Dfr&followup=https%3A%2F%2Fwww.google.com%2Fanalytics%2Fweb%2F%3Fhl%3Dfr#identifier']
def parse(self, response):
return [FormRequest.from_response(response,
formdata={'Email': 'Email'},
callback=self.log_password)]
def log_password(self, response):
return [FormRequest.from_response(response,
formdata={'Passwd': 'Password'},
callback=self.after_login)]
def after_login(self, response):
if "authentication failed" in response.body:
self.log("Login failed", level=logging.ERROR)
return
# We've successfully authenticated, let's have some fun!
else:
print("Login Successful!!")
return Request(url="https://analytics.google.com/analytics/web/getPage?id=trafficsources-all-traffic&ds=a5425w87291514p94531107&hl=fr&authuser=0",
method='POST',
headers=[{'Content-Type': 'application/x-www-form-urlencoded;charset=UTF-8',
'Galaxy-Ajax': 'true',
'Origin': 'https://analytics.google.com',
'Referer': 'https://analytics.google.com/analytics/web/?hl=fr&pli=1',
'User-Agent': 'My-user-agent',
'X-GAFE4-XSRF-TOKEN': 'Mytoken'}],
callback=self.parse_tastypage, dont_filter=True)
def parse_tastypage(self, response):
response = json.loads(jsonResponse)
inspect_response(response, self)
yield item
以下是部分日志内容：
2016-03-28 19:11:39 [scrapy] INFO: Enabled item pipelines:
[]
2016-03-28 19:11:39 [scrapy] INFO: Spider opened
2016-03-28 19:11:39 [scrapy] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
2016-03-28 19:11:39 [scrapy] DEBUG: Telnet console listening on 127.0.0.1:6023
2016-03-28 19:11:40 [scrapy] DEBUG: Crawled (200) <GET https://accounts.google.com/ServiceLogin?service=analytics&passive=true&nui=1&hl=fr&continue=https%3A%2F%2Fwww.google.com%2Fanalytics%2Fweb%2F%3Fhl%3Dfr&followup=https%3A%2F%2Fwww.google.com%2Fanalytics%2Fweb%2F%3Fhl%3Dfr#identifier> (referer: None)
2016-03-28 19:11:46 [scrapy] DEBUG: Crawled (200) <POST https://accounts.google.com/AccountLoginInfo> (referer: https://accounts.google.com/ServiceLogin?service=analytics&passive=true&nui=1&hl=fr&continue=https%3A%2F%2Fwww.google.com%2Fanalytics%2Fweb%2F%3Fhl%3Dfr&followup=https%3A%2F%2Fwww.google.com%2Fanalytics%2Fweb%2F%3Fhl%3Dfr)
2016-03-28 19:11:50 [scrapy] DEBUG: Redirecting (302) to <GET https://accounts.google.com/CheckCookie?hl=fr&checkedDomains=youtube&pstMsg=0&chtml=LoginDoneHtml&service=analytics&continue=https%3A%2F%2Fwww.google.com%2Fanalytics%2Fweb%2F%3Fhl%3Dfr&gidl=CAA> from <POST https://accounts.google.com/ServiceLoginAuth>
2016-03-28 19:11:57 [scrapy] DEBUG: Redirecting (302) to <GET https://www.google.com/analytics/web/?hl=fr> from <GET https://accounts.google.com/CheckCookie?hl=fr&checkedDomains=youtube&pstMsg=0&chtml=LoginDoneHtml&service=analytics&continue=https%3A%2F%2Fwww.google.com%2Fanalytics%2Fweb%2F%3Fhl%3Dfr&gidl=CAA>
2016-03-28 19:12:01 [scrapy] DEBUG: Crawled (200) <GET https://www.google.com/analytics/web/?hl=fr> (referer: https://accounts.google.com/AccountLoginInfo)
Login Successful!!
2016-03-28 19:12:01 [scrapy] ERROR: Spider error processing <GET https://www.google.com/analytics/web/?hl=fr> (referer: https://accounts.google.com/AccountLoginInfo)
Traceback (most recent call last):
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/twisted/internet/defer.py", line 577, in _runCallbacks
current.result = callback(current.result, *args, **kw)
File "/Users/aminbouraiss/super/super/spiders/mySuper.py", line 42, in after_login
callback=self.parse_tastypage, dont_filter=True)
File "/Library/Python/2.7/site-packages/Scrapy-1.1.0rc3-py2.7.egg/scrapy/http/request/__init__.py", line 35, in __init__
self.headers = Headers(headers or {}, encoding=encoding)
File "/Library/Python/2.7/site-packages/Scrapy-1.1.0rc3-py2.7.egg/scrapy/http/headers.py", line 12, in __init__
super(Headers, self).__init__(seq)
File "/Library/Python/2.7/site-packages/Scrapy-1.1.0rc3-py2.7.egg/scrapy/utils/datatypes.py", line 193, in __init__
self.update(seq)
File "/Library/Python/2.7/site-packages/Scrapy-1.1.0rc3-py2.7.egg/scrapy/utils/datatypes.py", line 229, in update
super(CaselessDict, self).update(iseq)
File "/Library/Python/2.7/site-packages/Scrapy-1.1.0rc3-py2.7.egg/scrapy/utils/datatypes.py", line 228, in <genexpr>
iseq = ((self.normkey(k), self.normvalue(v)) for k, v in seq)
ValueError: too many values to unpack
2016-03-28 19:12:01 [scrapy] INFO: Closing spider (finished)
2016-03-28 19:12:01 [scrapy] INFO: Dumping Scrapy stats:
{'downloader/request_bytes': 6419,
'downloader/request_count': 5,
'downloader/request_method_count/GET': 3,
'downloader/request_method_count/POST': 2,
'downloader/response_bytes': 75986,
'downloader/response_count': 5,
'downloader/response_status_count/200': 3,
'downloader/response_status_count/302': 2,
'finish_reason': 'finished',
'finish_time': datetime.datetime(2016, 3, 28, 23, 12, 1, 824033),
'log_count/DEBUG': 6,