使用python爬虫解析json

Question

报错
JSONDecodeError: Expecting value: line 1 column 1 (char 0)
源码

-*- coding:utf-8 -*-

import requests
from openpyxl import Workbook

url='https://www.lagou.com/jobs/positionAjax.json?px=default&city=上海&needAddtionalResult=false'
page=1
lang_name='python'
def get_json(url,page,lang_name):
data={'first':True,'pn':page,'kd':lang_name}
json_data=requests.post(url).json()

#list_con=json_data['content']['positionResult']['result']
print(json_data['content']['positionResult']['result'])

get_json(url,page,lang_name)

Answer 1

http://blog.chinaunix.net/uid-23500957-id-3792150.html