python - Use requests to crawl [Dajie.com] job information, but failed many times. Can you help me find out what is wrong with my code? How should it be changed?

Question

I have crawled several static website data before, and everything was relatively smooth. This time I encountered ajax, and after reading a few documents, I felt that it was not difficult, so I got started directly, but I still got stuck. . .

Goal:
Crawl job information from Dajie.com.

Process:
1. Use the browser inspection element function to view the address information of dynamically loaded data.

2, configure the request parameters of requests according to the displayed information.

data = {
    'keyword': 'python',
    'order': '0',
    'city': '',
    'recruitType': '',
    'salary': '',
    'experience': '',
    'page': '5',
    'positionFunction': '',
    '_CSRFToken': '',
    'ajax': '1'
}
headers = {
    'accept': 'application/json, text/javascript, */*; q=0.01',
    'accept-language': 'zh-CN,zh;q=0.8',
    'accept-encoding': 'gzip, deflate, sdch',
    'cookie': 'DJ_UVID=MTQ5MDMyMTExNTAzODM2MTc5; DJ_RF=empty; DJ_EU=http%3A%2F%2Fjob.dajie.com%2F; __login_tips=1; dj_cap=9c8c95bdef72e84a9bd7493a5ab91694; USER_ACTION="request^A-^A-^Ajobdetail:^A-"; SO_COOKIE_V2=0c7cGprjIH0q9RHc53CWLLXf151DQ5QvUP5ccPQj4g0B/izuXHm8sp41lJjJJh3nmjAkroj8JczFN/SCLPAUzbOHW7wYWmQ6Zu7s',
    'referer': 'https://so.dajie.com/job/search?keyword=%E9%A3%9E%E5%88%A9%E6%B5%A6&from=job&clicktype=blank',
    'user-agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.36',
    'X-Requested-With': 'XMLHttpRequest',
    'method':'get'
}

3, add request header information to requests.get().

response = requests.get('https://so.dajie.com/job/ajax/search/filter', params=data, headers=headers)

4, View the returned page information.

print response.url
print ''
print response.request.headers
print ''
print response.headers
print ''
print response.content[-1000:]
print ''
print response

5, Why is the returned result not the expected json data. . .

response.url:
https://so.dajie.com/job/ajax/search/filter?salary=&city=&ajax=1&positionFunction=&_CSRFToken=&keyword=python&recruitType=&order=0&experience=&page=5

response.request.headers:
{'accept-language': 'zh-CN,zh;q=0.8', 'accept-encoding': 'gzip, deflate, sdch', 'X-Requested-With': 'XMLHttpRequest', 'accept': 'application/json, text/javascript, */*; q=0.01', 'user-agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.36', 'Connection': 'keep-alive', 'referer': 'https://so.dajie.com/job/search?keyword=%E9%A3%9E%E5%88%A9%E6%B5%A6&from=job&clicktype=blank', 'cookie': 'DJ_UVID=MTQ5MDMyMTExNTAzODM2MTc5; DJ_RF=empty; DJ_EU=http%3A%2F%2Fjob.dajie.com%2F; __login_tips=1; dj_cap=9c8c95bdef72e84a9bd7493a5ab91694; USER_ACTION="request^A-^A-^Ajobdetail:^A-"; SO_COOKIE_V2=0c7cGprjIH0q9RHc53CWLLXf151DQ5QvUP5ccPQj4g0B/izuXHm8sp41lJjJJh3nmjAkroj8JczFN/SCLPAUzbOHW7wYWmQ6Zu7s', 'method': 'get'}

response.headers:
{'Date': 'Wed, 19 Apr 2017 02:00:47 GMT', 'Content-Length': '5944', 'ETag': '"552f21de-1738"', 'Content-Type': 'text/html; charset=UTF-8', 'Connection': 'keep-alive'}

response.content[-1000:]:
，这个页面去火星了，试试搜索一下吧：</p>
    <form action="http://so.dajie.com/job/search" target="_top" class="search" method="get">
      <input type="text" placeholder="搜索感兴趣的职位" autocomplete="off" name="keyword"/><button type="submit">搜索</button>
      <input type="hidden" name="jobsearch" value="8"/>
    </form>
  </p>
   <p class="error-404">
     <p class="buttonwrap">
       <a  class="button guest" id="guest" title="" href="http://www.dajie.com/"><b>逛逛大街</b></a>
       <a  class="button report" id="report" title="" href="mailto:service@dajie.com"><b>报告管理员</b></a>
     </p>
   </p>
  </p>
  <script type="text/javascript">
    $(function(){
      $('input[placeholder]').each(function(){
        var $dom = $(this);
        var tip = $dom.attr('placeholder');
        $.placeholder($dom, {
          placeTextClass : 'placeholder',
          placeText : tip
        });
      });
    });
  </script>
 </body>
</html>

response:
<Response [299]>

Question:
1, ‘https://so.dajie.com/job/ajax...’, why is this page opened not a json data page? The link given in the tutorial I watched before opens the data amount, for example: ‘https://rate.tmall.com/list_d...’.
2. This is the first time I use requests to request ajax data. Is there anything less to write when requesting?
2, I just tried to modify various request parameters, but I still can’t get the json data. Is my thinking in the wrong direction?

Thanks.

Answer 1

# coding: utf-8

import requests

url = 'https://so.dajie.com/job/search'
page_url = 'https://so.dajie.com/job/ajax/search/filter?keyword=python&order=0&city=&recruitType=&salary=&experience=&page=1&positionFunction=&_CSRFToken=&ajax=1'

session = requests.Session()
session.headers['referer'] = url
session.headers['user-agent'] = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36'

session.get(url)
r = session.get(page_url)
print r.text

Input cookies directly

# coding: utf-8

import requests

data = {
    'keyword': 'python',
    'order': '0',
    'city': '',
    'recruitType': '',
    'salary': '',
    'experience': '',
    'page': '5',
    'positionFunction': '',
    '_CSRFToken': '',
    'ajax': '1'
}

headers = {
    'cookie': 'DJ_RF=empty; DJ_EU=http%3A%2F%2Fso.dajie.com%2Fjob%2Fsearch%3Fkeyword%3Dpython%26jobsearch%3D8; DJ_UVID=MTQ5MjU2OTgxOTU1ODg0Mzk1; __login_tips=1; dj_cap=1e41c3c0ca9602c45e6481cb53c19774; SO_COOKIE_V2=6a297gxq5vDDnl9D4q04fhTgrWB11xG9lMj7iLcnP1uM/Zuzzx1dkeHauV4blsO1KsRYQKEQDrDGdiAhRE9efdI8PnREZK1MhzR4',
    'referer': 'https://so.dajie.com/job/search',
    'user-agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36'
}
r = requests.get('https://so.dajie.com/job/ajax/search/filter', data=data, headers=headers)
print r.text