python 发送HTTP请求 post json 格式

import httplib import jsontest_data = {'pictureName':'1.jpg'}requrl = "http://10.1.24.88:8090/api/load_pic"headerdata = {"Content-type": "application/json"}conn = httplib.HTTPConnection("10.1.24.88",8090)conn.request('POST',requrl,json.dumps(test_data),headerdata) response = conn.getresponse()res= response.read()print res