发post请求失败

import requests
res=requests.post(
url="https://jf.10086.cn/cmcc-web-shop/search/query",
data={
"sortColumn": "default",
"sortType": "DESC",
"pageSize": "60",
"pageNum": "1",
"firstKeyword": "优酷",
"integral": "",
"province": ""
},
headers={
"user-agent": "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.99 Safari/537.36"
}
)
print(res.text)
# print(res.json())

这么单调的请求头拿不到数据很正常