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#登录知乎，通过保存验证图片方式
importurllib.request
importurllib.parse
importtime
importhttp.cookiejar
webUrl="/login/email"#不能写/#signin因为不支持重定向e68a84e8a2ad3231313335323631343130323136353331333363393131
webheader={
#'Accept':'text/html,application/xhtml+xml,*/*',
#'Accept-Language':'zh-CN',
#'User-Agent':'Mozilla/5.0(WindowsNT6.1;WOW64;Trident/7.0;rv:11.0)likeGecko',
'User-Agent':'Mozilla/5.0(Linux;Android6.0;Nexus5Build/MRA58N)AppleWebKit/537.36(KHTML,likeGecko)Chrome/56.0.2924.87MobileSafari/537.36',
#'User-Agent':'Mozilla/5.0(iPod;U;CPUiPhoneOS4_3_3likeMacOSX;en-us)AppleWebKit/533.17.9(KHTML,likeGecko)Version/5.0.2Mobile/8J2Safari/6533.18.5',
#'DNT':'1',
#'Connection':'Keep-Alive'
}
postData={
'email':'在这里写你的账号',
'captcha_type':'cn',
'password':'在这里写你的密码',
'_xsrf':'',
'captcha':''
}
localStorePath="写你想保存的验证码图片的地址"
if__name__=='__main__':
#声明一个CookieJar对象实例来保存cookie
cookie=http.cookiejar.CookieJar()
#创建opener
handler=urllib.request.HTTPCookieProcessor(cookie)
opener=urllib.request.build_opener(handler)#建立opener对象，并添加头信息
urllib.request.install_opener(opener)
captcha_url='/captcha.gif?r=%d&type=login&lang=cn'%(time.time()*1000)
#captcha_url='/captcha.gif?r=%d&type=login'%(time.time()*1000)#这样获得的是“字母+数字验证码”
#这个获取验证码图片的方法是不行的！
#urllib.request.urlretrieve(captcha_url,localStorePath+'myCaptcha.gif')
#用urlopen函数保存验证图片
req=urllib.request.Request(url=captcha_url,headers=webheader)
content=urllib.request.urlopen(req)
#content=opener.open(req)
captcha_name='D:/Python学习/crawler_learning/知乎登录专题研究/知乎验证码图片/myNewCaptcha.gif'
content=content.read()
withopen(captcha_name,'wb')asf:
f.write(content)
postData['captcha']=input('请输入验证码')
#postData['_xsrf']=get_xsrf()
postData['_xsrf']='fa5ae712244bd4287e37180105fc'
print(postData['_xsrf'])
#用urlopen函数传送数据给服务器实现登录
postData_encoded=urllib.parse.urlencode(postData).encode('utf-8')
req=urllib.request.Request(url=webUrl,data=postData_encoded,headers=webheader)
webPage=urllib.request.urlopen(req)
#webPage=opener.open(req)
data=webPage.read().decode('utf-8')
print(data)
withopen("D:/知乎服务器反馈的内容.txt",mode='w',encoding='utf-8')asdataFile:
dataFile.write(data)
