Question

我正在尝试从以下网址获得回复。我尝试使用下面的代码获取数据，但不幸的是它返回的是空字符串。

url = 'https://covid19index.in/wp-admin/admin-ajax.php?action=get_wdtable&table_id=21'
params = {
    'action': 'get_wdtable',
    'table_id': 21
    }

headers = {
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.122 Safari/537.36',
    'Accept': 'application/json, text/javascript, */*; q=0.01',
    'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
    'X-Requested-With': 'XMLHttpRequest',
    'Connection': 'keep-alive',
    'Host': 'covid19index.in',
    'Cookie': '_ga=GA1.2.312051040.1587970650; _gid=GA1.2.1069938183.1587970650; _gat=1',
    'Sec-Fetch-Dest': 'empty',
    'Sec-Fetch-Mode': 'cors',
    'Referer': 'https://covid19index.in/district-wise-cases/',
    'Origin': 'https://covid19index.in'
}

s = requests.Session()
s.mount('http://', HTTPAdapter(max_retries=3))
time.sleep(2)

try:
    content = s.post(url,data= params, headers=headers)
except requests.exceptions.TooManyRedirects:
    try:
        for _ in range(10):
            content= s.post(url,data= params, headers= headers)          
    except:
        print('Failed: ', 'Too many Requets and redirect')
        sys.exit()

当我打印content.text时，它返回''（空字符串）

我已经尝试了所有可能的方法来获取输出，但是我无法获取输出。如果对此有任何帮助，将不胜感激。

Answer 1

实际上，我可以使用浏览器检查器从该服务器接收数据。这是通过将浏览器中的cURL请求复制到Python转换器https://curl.trillworks.com/

而获得的工作代码

import requests

cookies = {
    'wordpress_test_cookie': 'WP+Cookie+check',
    '_ga': 'GA1.2.1193786784.1588060314',
    '_gid': 'GA1.2.1185668591.1588060314',
    '_gat': '1',
}

headers = {
    'Connection': 'keep-alive',
    'Accept': 'application/json, text/javascript, */*; q=0.01',
    'X-Requested-With': 'XMLHttpRequest',
    'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.92 Safari/537.36',
    'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
    'Origin': 'https://covid19index.in',
    'Sec-Fetch-Site': 'same-origin',
    'Sec-Fetch-Mode': 'cors',
    'Sec-Fetch-Dest': 'empty',
    'Referer': 'https://covid19index.in/district-wise-cases/',
    'Accept-Language': 'fr-FR,fr;q=0.9,en-US;q=0.8,en;q=0.7',
}

params = (
    ('action', 'get_wdtable'),
    ('table_id', '21'),
)

data = {
  'draw': '1',
  'columns[0][data]': '0',
  'columns[0][name]': 'state',
  'columns[0][searchable]': 'true',
  'columns[0][orderable]': 'false',
  'columns[0][search][value]': '',
  'columns[0][search][regex]': 'false',
  'columns[1][data]': '1',
  'columns[1][name]': 'district',
  'columns[1][searchable]': 'true',
  'columns[1][orderable]': 'false',
  'columns[1][search][value]': '',
  'columns[1][search][regex]': 'false',
  'columns[2][data]': '2',
  'columns[2][name]': 'date',
  'columns[2][searchable]': 'true',
  'columns[2][orderable]': 'false',
  'columns[2][search][value]': '',
  'columns[2][search][regex]': 'false',
  'columns[3][data]': '3',
  'columns[3][name]': 'date_total',
  'columns[3][searchable]': 'true',
  'columns[3][orderable]': 'false',
  'columns[3][search][value]': '',
  'columns[3][search][regex]': 'false',
  'start': '0',
  'length': '-1',
  'search[value]': '',
  'search[regex]': 'false',
  'wdtNonce': 'cee9844d13'
}

response = requests.post('https://covid19index.in/wp-admin/admin-ajax.php', headers=headers, params=params, cookies=cookies, data=data)

数据可以访问：

import ast
>>> ast.literal_eval(response.content.decode("utf-8"))["data"]                                                                                       
[['Andaman and Nicobar Islands',
  'North and Middle Andaman',
  '27\\/03\\/2020',
  '1'],
 ['Andaman and Nicobar Islands', 'South Andaman', '26\\/03\\/2020', '1'],
 ['Andaman and Nicobar Islands', 'South Andaman', '27\\/03\\/2020', '4'],
 ['Andaman and Nicobar Islands', 'South Andaman', '28\\/03\\/2020', '3'],
 ['Andaman and Nicobar Islands', 'South Andaman', '30\\/03\\/2020', '1'],
 ['Andaman and Nicobar Islands', 'South Andaman', '08\\/04\\/2020', '1'],
 ['Andaman and Nicobar Islands', 'South Andaman', '17\\/04\\/2020', '1'],
 ['Andaman and Nicobar Islands', 'South Andaman', '18\\/04\\/2020', '2'],
 ['Andaman and Nicobar Islands', 'South Andaman', '19\\/04\\/2020', '1'],
 ['Andaman and Nicobar Islands', 'South Andaman', '20\\/04\\/2020', '1'],
 ['Andaman and Nicobar Islands', 'South Andaman', '21\\/04\\/2020', '1'],
 ['Andaman and Nicobar Islands', 'South Andaman', '22\\/04\\/2020', '1'],
 ['Andaman and Nicobar Islands', 'South Andaman', '23\\/04\\/2020', '4'],
...

发布请求响应在Python中返回空字符串

1 个答案: