模拟登陆的问题

CC_Xing

我用了以下方式登陆
1、我用浏览器的cookies先发送GET请求登陆页面，再发送GET请求获得验证码，再手动输入验证码POST，登陆失败。
2、我用浏览器的cookies直接GET验证码，然后手动输入验证码再POST，登陆失败。
3、我先GET登陆页面，获取cookies，然后用这个cookiesGET验证码，然后手动输入验证码，再POST，登陆失败。
都失败了，求解！

CC_Xing

1. import requests
   
2. import urllib.parse
   
3. 
   
4. headers = {'Cookie':'PHPSESSID=s6q5osfuun9hppla46k828r032',\
   
5.     'User-Agent':'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537\
   
6.            .36 (KHTML, like Gecko) Chrome/53.0.2785.104 Safar\
   
7.            i/537.36 Core/1.53.3103.400 QQBrowser/9.6.11372.400'}
   
8. 
   
9. 
   
10. 
    
11. s = requests.Session()
    
12. s.headers.update(headers)
    
13. 
    
14. r = s.get('http://210.45.242.5:8080/reader/login.php')
    
15. 
    
16. 
    
17. 
    
18. r = s.get('http://210.45.242.5:8080/reader/captcha.php')
    
19. r = r.content
    
20. with open('yzm.jpg','wb') as f:
    
21.     f.write(r)
    
22.     f.close()
    
23. 
    
24. y_pass = input('输入验证码：')
    
25. data = {'number':'4354353455',\
    
26.         'passwd':'34543534345',\
    
27.         'captcha':y_pass,\
    
28.         'select':'cert_no'}
    
29. 
    
30. data = urllib.parse.urlencode(data).encode('utf-8')
    
31. 
    
32. url = 'http://210.45.242.5:8080/reader/redr_verify.php'
    
33. r = s.post(url,data)
    
34. url = 'http://210.45.242.5:8080/reader/redr_info.php'
    
35. r = s.get(url)
    
36. html = r.content.decode('utf-8')
    
37. 
    
38. print(html)
    
39. 
    

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CC_Xing

我已经登陆成功了，我改用了urllib.request模块而不用requests模块，然后就成功了想知道为什么
以下为修改的代码

1. import urllib.request
   
2. import urllib.parse
   
3. 
   
4. 
   
5. headers = {'Cookie':'PHPSESSID=s6q5osfuun9hppla46k828r032',\
   
6.     'User-Agent':'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537\
   
7.            .36 (KHTML, like Gecko) Chrome/53.0.2785.104 Safar\
   
8.            i/537.36 Core/1.53.3103.400 QQBrowser/9.6.11372.400'}
   
9. 
   
10. 
    
11. def get_page(url,data=None,headers=None):
    
12.     req = urllib.request.Request(url,headers=headers)
    
13.     page = urllib.request.urlopen(req,data)
    
14.     return page
    
15. 
    
16. url = 'http://210.45.242.5:8080/reader/login.php'
    
17. get_page(url,headers=headers)
    
18. 
    
19. url = 'http://210.45.242.5:8080/reader/captcha.php'
    
20. page = get_page(url,headers=headers)
    
21. r = page.read()
    
22. 
    
23. with open('yzm.jpg','wb') as f:
    
24.     f.write(r)
    
25.     f.close()
    
26. 
    
27. y_pass = input('输入验证码：')
    
28. data = {'number':'43243242',\
    
29.         'passwd':'2342342342',\
    
30.         'captcha':y_pass,\
    
31.         'select':'cert_no'}
    
32. data = urllib.parse.urlencode(data).encode('utf-8')
    
33. 
    
34. url = 'http://210.45.242.5:8080/reader/redr_verify.php'
    
35. get_page(url,data,headers=headers)
    
36. 
    
37. url = 'http://210.45.242.5:8080/reader/redr_info.php'
    
38. page = get_page(url,headers=headers)
    
39. html = page.read().decode('utf-8')
    
40. 
    
41. print(html)
    
42. y1=input('exit?1:yes,2:no')
    
43. if y1=='1':
    
44.     url = 'http://210.45.242.5:8080/reader/logout.php'
    
45.     page = get_page(url,headers=headers)
    
46.     html = page.read().decode('utf-8')
    
47.     print(html)

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