python如何爬取搜狗微信公众号文章永久链接的思路解析

def parse(self, response):
 item = SougouItem()
 item["title"] = response.xpath('//title/text()').extract_first()
 print("**"*5, item["title"],"**"*5)
 name = input("----------请输入需要搜索的信息：")
 print(name)
 url = "http://weixin.sogou.com/weixin?query="+name+"&type=2&page=1&ie=utf8"
 yield scrapy.Request(url=url, callback=self.parse_two, meta={"name":name})

 def parse_two(self, response):
 print(response.url)
 name = response.meta["name"]
 resp = response.xpath('//ul[@class="news-list"]/li')
 s = 1
 # 判断url 是否是需要输入验证码
 res = re.search("from", response.url) # 需要验证码验证
 if res:
 print(response.url)
 img = response.xpath('//img/@src').extract()
 print(img)
 url_img = "http://weixin.sogou.com/antispider/"+ img[1]
 print(url_img)
 url_img = requests.get(url_img).content with open("urli.jpg", "wb") as f:
 f.write(url_img) # f.close()
 img = input("请输入验证码:")
 print(img)
 url = response.url
 r = re.search(r"from=(.*)",url).group(1)
 print(r)
 postData = {"c":img,"r":r,"v":"5"}
 url = "http://weixin.sogou.com/antispider/thank.php"
 yield scrapy.FormRequest(url=url, formdata=postData, callback=self.parse_two,meta={"name":name}) 
 # 不需要验证码验证
 else: 
 for res, i in zip(resp, range(1, 10)):
 item = SougouItem()
 item["url"] = res.xpath('.//p[1]/a/@href').extract_first()
 item["name"] = name
 print("第%d条" % i) # 转化永久链接
 headers = {"Host": "mp.weixin.qq.com", 
 "Connection": "keep-alive", 
 "Accept": "application/json, text/javascript, */*; q=0.01", 
 "X-Requested-With": "XMLHttpRequest", 
 "User-Agent": "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36", 
 "Referer": "https://mp.weixin.qq.com/cgi-bin/appmsg?t=media/appmsg_edit_v2&action=edit&isNew=1&type=10&token=938949250&lang=zh_CN", 
 "Accept-Encoding": "gzip, deflate, br", 
 "Accept-Language": "zh-CN,zh;q=0.9", 
 "Cookie": "noticeLoginFlag=1; pgv_pvi=5269297152; pt2gguin=o1349184918; RK=ph4smy/QWu; ptcz=f3eb6ede5db921d0ada7f1713e6d1ca516d200fec57d602e677245490fcb7f1e; pgv_pvid=1033302674; o_cookie=1349184918; pac_uid=1_1349184918; ua_id=4nooSvHNkTOjpIpgAAAAAFX9OSNcLApfsluzwfClLW8=; mm_lang=zh_CN; noticeLoginFlag=1; remember_acct=Liangkai318; rewardsn=; wxtokenkey=777; pgv_si=s1944231936; uuid=700c40c965347f0925a8e8fdcc1e003e; ticket=023fc8861356b01527983c2c4765ef80903bf3d7; ticket_id=gh_6923d82780e4; cert=L_cE4aRdaZeDnzao3xEbMkcP3Kwuejoi; data_bizuin=3075391054; bizuin=3208078327; data_ticket=XrzOnrV9Odc80hJLtk8vFjTLI1vd7kfKJ9u+DzvaeeHxZkMXbv9kcWk/Pmqx/9g7; slave_sid=SWRKNmFyZ1NkM002Rk9NR0RRVGY5VFdMd1lXSkExWGtPcWJaREkzQ1BESEcyQkNLVlQ3YnB4OFNoNmtRZzdFdGpnVGlHak9LMjJ5eXBNVEgxZDlZb1BZMnlfN1hKdnJsV0NKallsQW91Zjk5Y3prVjlQRDNGYUdGUWNFNEd6eTRYT1FSOEQxT0MwR01Ja0Vo; slave_user=gh_6923d82780e4; xid=7b2245140217dbb3c5c0a552d46b9664; openid2ticket_oTr5Ot_B4nrDSj14zUxlXg8yrzws=D/B6//xK73BoO+mKE2EAjdcgIXNPw/b5PEDTDWM6t+4="}
 respon = requests.get(url=item["url"]).content
 gongzhongh = etree.HTML(respon).xpath('//a[@id="post-user"]/text()')[0] 
 # times = etree.HTML(respon).xpath('//*[@id="post-date"]/text()')[0]
 title_one = etree.HTML(respon).xpath('//*[@id="activity-name"]/text()')[0].split()[0]
 print(gongzhongh, title_one)
 item["tit"] = title_one
 item["gongzhongh"] = gongzhongh 
 # item["times"] = times
 url = "https://mp.weixin.qq.com/cgi-bin/searchbiz?action=search_biz&token=938949250&lang=zh_CN&f=json&ajax=1&query=" + gongzhongh + "&begin=0&count=5"
 # wenzhang_url = "https://mp.weixin.qq.com/cgi-bin/appmsg?token=610084158&lang=zh_CN&f=json&ajax=1&random=0.7159556076774083&action=list_ex&begin=0&count=5&query=" + item["tit"] + "&fakeid=MzA5MzMxMDk3OQ%3D%3D&type=9"
 resp = requests.get(url=url, headers=headers).content
 print(resp)
 faskeids = json.loads(resp.decode("utf-8")) 
 try:
 list_fask = faskeids["list"] except Exception as f:
 print("**********[INFO]:请求失败，登陆失败， 请重新登陆*************") 
 return
 for fask in list_fask:
 fakeid = fask["fakeid"]
 nickname = fask["nickname"] if nickname == item["gongzhongh"]:
 url = "https://mp.weixin.qq.com/cgi-bin/appmsg?token=938949250&f=json&action=list_ex&count=5&query=&fakeid=" + fakeid + "&type=9"
 # url = "https://mp.weixin.qq.com/cgi-bin/appmsg?token=1773340085&lang=zh_CN&f=json&ajax=1&action=list_ex&begin=0&count=5&query=" + item["tit"] + "&fakeid=MzA5MzMxMDk3OQ%3D%3D&type=9"
 url = "https://mp.weixin.qq.com/cgi-bin/appmsg?token=938949250&f=json&ajax=1&action=list_ex&begin=0&count=5&query=" + item["tit"] +"&fakeid=" + fakeid +"&type=9"
 resp = requests.get(url=url, headers=headers).content
 app = json.loads(resp.decode("utf-8"))["app_msg_list"]
 item["aid"] = app["aid"]
 item["appmsgid"] = app["appmsgid"]
 item["cover"] = app["cover"]
 item["digest"] = app["digest"]
 item["url_link"] = app["link"]
 item["tit"] = app["title"]
 print(item)
 time.sleep(10) # time.sleep(5)
 # dict_wengzhang = json.loads(resp.decode("utf-8"))
 # app_msg_list = dict_wengzhang["app_msg_list"]
 # print(len(app_msg_list))
 # for app in app_msg_list:
 # print(app)
 # title = app["title"]
 # if title == item["tit"]:
 # item["url_link"] = app["link"]
 # updata_time = app["update_time"]
 # item["times"] = time.strftime("%Y-%m-%d %H:%M:%S", updata_time)
 # print("最终链接为:", item["url_link"])
 # yield item
 # else:
 # print(app["title"], item["tit"])
 # print("与所选文章不同放弃")
 # # item["tit"] = app["title"]
 # # item["url_link"] = app["link"]
 # # yield item
 # else:
 # print(nickname, item["gongzhongh"])
 # print("与所选公众号不一致放弃")
 # time.sleep(100)
 # yield item
 if response.xpath('//a[@class="np"]'):
 s += 1
 url = "http://weixin.sogou.com/weixin?query="+name+"&type=2&page="+str(s) # time.sleep(3)
 yield scrapy.Request(url=url, callback=self.parse_two, meta={"name": name})