Python scrapy模拟登陆知乎重定向问题，pythonscrapy,当我使用scrapy想进

Python scrapy模拟登陆知乎重定向问题，pythonscrapy,当我使用scrapy想进

pythonfrom scrapy.contrib.spiders import CrawlSpider, Rulefrom scrapy.selector import Selectorfrom scrapy.contrib.linkextractors.sgml import SgmlLinkExtractorfrom scrapy.http import Request, FormRequestfrom zhihu.items import ZhihuItemclass ZhihuSipder(CrawlSpider) :    name = "zhihu"    allowed_domains = ["www.zhihu.com"]    start_urls = [        "http://www.zhihu.com"    ]    rules = (        Rule(SgmlLinkExtractor(allow = r'http://www\.zhihu\.com/question/\d+'), callback = 'parse_page'),    )    def start_requests(self):        return [Request("https://www.zhihu.com/login", callback = self.post_login)]    #FormRequeset出问题了    def post_login(self, response):        print 'Preparing login'        xsrf = Selector(response).xpath('//input[@name="_xsrf"]/@value').extract()[0]        print xsrf        ##############        return [FormRequest.from_response(response,  #"http://www.zhihu.com/login",                            formdata = {                            '_xsrf': xsrf,                            'email': '@qq.com',                            'password': '123456',                            'rememberme': 'y',                            },                            callback = self.parse_page                            )]    def parse_page(self, response):        problem = Selector(response)        item = ZhihuItem()        item['url'] = response.url        item['title'] = problem.xpath('//h2[@class="zm-item-title zm-editable-content"]/text()').extract()        item['description'] = problem.xpath('//div[@class="zm-editable-content"]/text()').extract()        item['answer']= problem.xpath('//div[@class=" zm-editable-content clearfix"]/text()').extract()        return item

使用命令运行爬虫, 可以正确打印xsrf, 但无法成功登陆

$ scrapy crawl zhihu错误结果如下2014-12-18 14:45:11+0800 [zhihu] INFO: Spider opened2014-12-18 14:45:11+0800 [zhihu] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)2014-12-18 14:45:11+0800 [scrapy] DEBUG: Telnet console listening on 127.0.0.1:60232014-12-18 14:45:11+0800 [scrapy] DEBUG: Web service listening on 127.0.0.1:60802014-12-18 14:45:11+0800 [zhihu] DEBUG: Redirecting (301) to <GET https://www.zhihu.com/> from <GET https://www.zhihu.com/login>2014-12-18 14:45:11+0800 [zhihu] DEBUG: Redirecting (302) to <GET http://www.zhihu.com/> from <GET https://www.zhihu.com/>2014-12-18 14:45:12+0800 [zhihu] DEBUG: Crawled (200) <GET http://www.zhihu.com/> (referer: None)Preparing logind117e46de0dcc5e8ee2f0c7031fcafe92014-12-18 14:45:12+0800 [zhihu] DEBUG: Redirecting (302) to <GET http://www.zhihu.com/> from <POST http://www.zhihu.com/login>2014-12-18 14:45:12+0800 [zhihu] DEBUG: Filtered duplicate request: <GET http://www.zhihu.com/> - no more duplicates will be shown (see DUPEFILTER_DEBUG to show all duplicates)2014-12-18 14:45:12+0800 [zhihu] INFO: Closing spider (finished)2014-12-18 14:45:12+0800 [zhihu] INFO: Dumping Scrapy stats:

希望得到解答, 为什么不能成功登陆, 非常疑惑, 非常感谢

print response.body

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