更新后的登录，学习下有点意思

login_zhihu.py

@@ -1,27 +1,80 @@
+# -*- coding:UTF-8 -*-
+
 import  requests , time
+import  hmac ,json
 from bs4 import BeautifulSoup
-url = 'https://www.zhihu.com/login/email'
-def get_captcha(data):
+from hashlib import sha1
+
+
+def get_captcha(data,need_cap):
+    ''' 处理验证码 '''
+    if need_cap is False:
+        return
     with open('captcha.gif','wb') as fb:
         fb.write(data)
-    return input('captcha')
+    return input('captcha:')
+    
+def get_signature(grantType,clientId,source,timestamp):
+    ''' 处理签名 '''
+	
+    hm = hmac.new(b'd1b964811afb40118a12068ff74a12f4',None,sha1)
+    hm.update(str.encode(grantType))
+    hm.update(str.encode(clientId))
+    hm.update(str.encode(source))
+    hm.update(str.encode(timestamp))
+
+    return  str(hm.hexdigest())
+
+
+
+def login(username,password,oncaptcha,sessiona,headers):
+    ''' 处理登录 '''
+    
+    resp1 = sessiona.get('https://www.zhihu.com/signin',headers=headers)  # 拿cookie:_xsrf
+    resp2 = sessiona.get('https://www.zhihu.com/api/v3/oauth/captcha?lang=cn',headers=headers)  # 拿cookie:capsion_ticket 
+    need_cap = json.loads(resp2.text)["show_captcha"]  # {"show_captcha":false} 表示不用验证码
+
+    grantType = 'password'
+    clientId = 'c3cef7c66a1843f8b3a9e6a1e3160e20'
+    source ='com.zhihu.web'
+    timestamp = str((time.time()*1000)).split('.')[0]  # 签名只按这个时间戳变化
        
-def login(username,password,oncaptcha):
-    sessiona = requests.Session()
-    headers = {'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:47.0) Gecko/20100101 Firefox/47.0'}
-    xyz = sessiona.get('https://www.zhihu.com/#signin',headers=headers).content
-    _xsrf = BeautifulSoup(sessiona.get('https://www.zhihu.com/#signin',headers=headers).content,'html.parser').find('input',attrs={'name':'_xsrf'}).get('value')
     captcha_content = sessiona.get('https://www.zhihu.com/captcha.gif?r=%d&type=login'%(time.time()*1000),headers=headers).content
+    
     data = {
-        "_xsrf":_xsrf,
-        "email":username,
+        "client_id":clientId,
+        "grant_type":grantType,
+        "timestamp":timestamp,
+        "source":source,
+        "signature": get_signature(grantType,clientId,source,timestamp), # 获取签名
+        "username":username,
         "password":password,
-        "remember_me":True,
-        "captcha":oncaptcha(captcha_content)
+        "lang":"cn",
+        "captcha":oncaptcha(captcha_content,need_cap), # 获取图片验证码
+        "ref_source":"other_",
+        "utm_source":""
     }
-    resp = sessiona.post('https://www.zhihu.com/login/email',data,headers=headers).content
-    print(resp)
+    
+    print("**2**: "+str(data))
+    print("-"*50)
+    resp = sessiona.post('https://www.zhihu.com/api/v3/oauth/sign_in',data,headers=headers).content
+    print(BeautifulSoup(resp,'html.parser'))
+    
+    print("-"*50)
     return resp 
 
 if __name__ == "__main__":
-    login('email','password',get_captcha)
+    sessiona = requests.Session()
+    headers = {'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:47.0) Gecko/20100101 Firefox/47.0','authorization':'oauth c3cef7c66a1843f8b3a9e6a1e3160e20'}
+
+    login('12345678@qq.com','12345678',get_captcha,sessiona,headers) # 用户名密码换自己的就好了
+    resp = sessiona.get('https://www.zhihu.com/inbox',headers=headers)  # 登录进去了，可以看私信了
+    print(BeautifulSoup(resp.content ,'html.parser'))
+    
+    
+    
+    
+### chcp 65001 (win下改变cmd字符集)
+### python  c:\python34\login_zhihu.py
+### 有非常无语的事情发生，还以为代码没生效
+