python请求带有标头和参数的POST

Question

我有一个发布请求，我正在尝试使用requestspython发送。但是我收到无效的403错误。这些请求可以通过浏览器正常运行。POST /ajax-load-system HTTP/1.1Host: xyz.website.comAccept: application/json, text/javascript, */*; q=0.01Accept-Language: en-GB,en;q=0.5User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0Referer: http://xyz.website.com/help-me/ZYc5YnContent-Type: application/x-www-form-urlencoded; charset=UTF-8X-Requested-With: XMLHttpRequestContent-Length: 56Cookie: csrf_cookie_name=a3f8adecbf11e29c006d9817be96e8d4; ci_session=ba92hlh6o0ns7f20t4bsgjt0uqfdmdtl; _ga=GA1.2.1535910352.1530452604; _gid=GA1.2.1416631165.1530452604; _gat_gtag_UA_21820217_30=1Connection: closecsrf_test_name=a3f8adecbf11e29c006d9817be96e8d4&vID=9999我在python中尝试的是：import requestsimport jsonurl = 'http://xyz.website.com/ajax-load-system'payload = {'Host': 'xyz.website.com','User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0','Accept': 'application/json, text/javascript, */*; q=0.01','Accept-Language': 'en-GB,en;q=0.5','Referer': 'http://xyz.website.com/help-me/ZYc5Yn','Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8','X-Requested-With': 'XMLHttpRequest','Content-Length': '56','Cookie': 'csrf_cookie_name=a3f8adecbf11e29c006d9817be96e8d4; ci_session=ba92hlh6o0ns7f20t4bsgjt0uqfdmdtl; _ga=GA1.2.1535910352.1530452604; _gid=GA1.2.1416631165.1530452604; _gat_gtag_UA_21820217_30=1','Connection': 'close','csrf_test_name': 'a3f8adecbf11e29c006d9817be96e8d4','vID': '9999',}    headers = {}r = requests.post(url, headers=headers, data=json.dumps(payload))print(r.status_code)  但这正在打印403错误代码。我在这里做错了什么？我期望返回响应为json：{"status_message":"Thanks for help.","help_count":"141","status":true}