您需要设置内容类型标题：
data = {"data" : "24.3"}data_json = json.dumps(data)headers = {'Content-type': 'application/json'}response = requests.post(url, data=data_json, headers=headers)如果设置
url为
http://httpbin.org/post，则该服务器将向我回显所发布的内容：
>>> import json>>> import requests>>> import pprint>>> url = 'http://httpbin.org/post'>>> data = {"data" : "24.3"}>>> data_json = json.dumps(data)>>> headers = {'Content-type': 'application/json'}>>> response = requests.post(url, data=data_json, headers=headers)>>> pprint.pprint(response.json()){u'args': {}, u'data': u'{"data": "24.3"}', u'files': {}, u'form': {}, u'headers': {u'Accept': u'*/*', u'Accept-Encoding': u'gzip, deflate, compress', u'Connection': u'keep-alive', u'Content-Length': u'16', u'Content-Type': u'application/json', u'Host': u'httpbin.org', u'User-Agent': u'python-requests/1.0.3 CPython/2.6.8 Darwin/11.4.2'}, u'json': {u'data': u'24.3'}, u'origin': u'109.247.40.35', u'url': u'http://httpbin.org/post'}>>> pprint.pprint(response.json()['json']){u'data': u'24.3'}如果您使用的是
requests2.4.2或更高版本，则可以将JSON编码留给库；也会自动为您设置正确的Content-
Type标头。将要作为JSON发送的数据传递到
json关键字参数中：
data = {"data" : "24.3"}response = requests.post(url, json=data)
