發布使用python-requests下載文件的請求

Question

我正在嘗試使用python請求創建multipart / form-data。 解決方案應返回較大的csv文件。

但是我在發布這樣的請求時遇到問題（來自Fiddler的原始內容）：

POST http://fix-cloud.sbis.ru/view_log/service/sbis-rpc-service300.dll?raw_file_result HTTP/1.1
Host: fix-cloud.sbis.ru
Connection: keep-alive
Content-Length: 579
Cache-Control: max-age=0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Origin: http://fix-cloud.sbis.ru
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.116 Safari/537.36
Content-Type: multipart/form-data; boundary=----WebKitFormBoundary0FyoqFD3QVSl0bly
Referer: http://fix-cloud.sbis.ru/cloud.html
Accept-Encoding: gzip, deflate
Accept-Language: ru-RU,ru;q=0.8,en-US;q=0.6,en;q=0.4
Cookie: _ym_uid=1455544058672406990; __utma=60092399.1077522409.1455548286.1455548286.1455548286.1; __utmz=60092399.1455548286.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); timeToCheck=Wed%2C%2024%20Feb%202016%2016%3A18%3A51%20GMT; param=viewer; did=fb1a4666-e652-4f87-abb4-8fbc445bc20d; rightshash=c7b7b64c088c681b0ff84407076cad18; CpsUserId=; tz=-180; RT=; su=00000001-00056a83; sid=00000001-00056a83-00ba-6847661894264e9c

------WebKitFormBoundary0FyoqFD3QVSl0bly
Content-Disposition: form-data; name="Запрос"

{"jsonrpc":"2.0","protocol":4,"method":"ЖурналСообщений.Выгрузить","params":{"Параметры":{"s":[{"t":"Строка","n":"ВремяОт"},{"t":"Строка","n":"ВремяДо"},{"t":"Строка","n":"Группа"}],"d":["2016-02-24 19:18:03.500+03","2016-02-24 19:19:03.500+03","Основной сервис inside"],"_type":"record"},"fileDownloadToken":7140344178769737},"id":"4117712937295437"}
------WebKitFormBoundary0FyoqFD3QVSl0bly--

這是行不通的。 當我嘗試獲取非常大的文件時，服務器返回答案504。

r = s.post(csv_url, headers = post_headers, data = json.dumps(data))

該解決方案無法以任何方式起作用。 回答為500

r = s.post(csv_url, headers = post_headers, files = {'Запрос':(None, json.dumps(data), None)})

卷曲命令

curl 'http://fix-cloud.sbis.ru/view_log/service/sbis-rpc-service300.dll?raw_file_result' -H 'Host: fix-cloud.sbis.ru' -H 'User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0' -H 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8' -H 'Accept-Language: ru-RU,ru;q=0.8,en-US;q=0.5,en;q=0.3' -H 'Accept-Encoding: gzip, deflate' -H 'Referer: http://fix-cloud.sbis.ru/cloud.html' -H 'Cookie: param=viewer; CpsUserId=; did=238ebefa-ec52-4c41-a1d7-8a14fcfdeae4; timeToCheck=Thu%2C%2025%20Feb%202016%2010%3A48%3A55%20GMT; rightshash=c7b7b64c088c681b0ff84407076cad18; tz=-180; RT=; sid=00000001-00056a83-00ba-ffbbb027145646c3; su=00000001-00056a83' -H 'Connection: keep-alive' -H 'Content-Type: multipart/form-data; boundary=---------------------------12195194351941' --data-binary $'-----------------------------12195194351941\r\nContent-Disposition: form-data; name="\u0417\u0430\u043f\u0440\u043e\u0441"\r\n\r\n{"jsonrpc":"2.0","protocol":4,"method":"\u0416\u0443\u0440\u043d\u0430\u043b\u0421\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u0439.\u0412\u044b\u0433\u0440\u0443\u0437\u0438\u0442\u044c","params":{"\u041f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u044b":{"s":[{"t":"\u0421\u0442\u0440\u043e\u043a\u0430","n":"\u0412\u0440\u0435\u043c\u044f\u041e\u0442"},{"t":"\u0421\u0442\u0440\u043e\u043a\u0430","n":"\u0412\u0440\u0435\u043c\u044f\u0414\u043e"},{"t":"\u0421\u0442\u0440\u043e\u043a\u0430","n":"\u0413\u0440\u0443\u043f\u043f\u0430"}],"d":["2016-02-25 14:40:02.900+03","2016-02-25 14:40:02.900+03","\u041e\u0441\u043d\u043e\u0432\u043d\u043e\u0439 \u0441\u0435\u0440\u0432\u0438\u0441 inside"],"_type":"record"},"fileDownloadToken":36597679759578120},"id":"9150478717440579"}\r\n-----------------------------12195194351941--\r\n'

Answer 1

請參閱此處獲取文檔。

文件元組中的第二個條目應該是打開的文件句柄。 相反，您發送字符串json.dumps(data) 。 將字符串寫入文件（或請求可以讀取的文件狀緩沖區），然后發送。

Answer 2

問題的另一面是：ForeFront試圖在2分鍾內發送更多請求時，隨時阻止我。 而對於python請求，我無法解決它。

這就是為什么最簡單的解決方案是發送多於一個的帖子請求並獲取許多小文件的原因。