Python3：不带请求库的JSON POST请求

您不发布JSON，而是发布

application/x-www-form-urlenpred

编码为JSON并设置正确的标题：

import jsonnewConditions = {"con1":40, "con2":20, "con3":99, "con4":40, "password":"1234"} params = json.dumps(newConditions).enpre('utf8')req = urllib.request.Request(conditionsSetURL, data=params,       headers={'content-type': 'application/json'})response = urllib.request.urlopen(req)

演示：

>>> import json>>> import urllib.request>>> conditionsSetURL = 'http://httpbin.org/post'>>> newConditions = {"con1":40, "con2":20, "con3":99, "con4":40, "password":"1234"} >>> params = json.dumps(newConditions).enpre('utf8')>>> req = urllib.request.Request(conditionsSetURL, data=params,...        headers={'content-type': 'application/json'})>>> response = urllib.request.urlopen(req)>>> print(response.read().depre('utf8')){  "args": {},   "data": "{"con4": 40, "con2": 20, "con1": 40, "password": "1234", "con3": 99}",   "files": {},   "form": {},   "headers": {    "Accept-Encoding": "identity",     "Connection": "close",     "Content-Length": "68",     "Content-Type": "application/json",     "Host": "httpbin.org",     "User-Agent": "Python-urllib/3.4",     "X-Request-Id": "411fbb7c-1aa0-457e-95f9-1af15b77c2d8"  },   "json": {    "con1": 40,     "con2": 20,     "con3": 99,     "con4": 40,     "password": "1234"  },   "origin": "84.92.98.170",   "url": "http://httpbin.org/post"}