POST请求在Postman中有效,但在Python中无效

时间:2016-10-10 08:46:31

标签: python json

当我在Postman中发出这个POST请求时,我得到了数据。当我在Python 2.7(使用Jupyter笔记本)中执行此操作时,我收到错误“无法解码JSON对象”。我做错了什么,我怎么能让它运作起来?

import json
import requests
url = 'http://api.scb.se/OV0104/v1/doris/en/ssd/BE/BE0101/BE0101A/BefolkningNy'

headers={'content-type': 'application/json'}
payload = {  
"query": [
 {       
 "code": "ContentsCode",
  "selection": {        
    "filter": "item",         
    "values": [          
      "BE0101N1"         
    ]      
   }    
},    
{      
   "code": "Tid",
   "selection": {        
   "filter": "item",         
  "values": [           
   "2010",          
   "2011"         
   ]      
  }    
 },
 {      
  "code": "Region",
    "selection": {        
    "filter": "item",         
   "values": [           
   "01"         
   ]      
  }    
 }   
],  
"response": {    
  "format": "json"   
 }
}
headers = {'Content-type': 'application/json', 'Accept': 'text/plain'}

r = requests.post(url, data=payload)
print(r.text)
print(r.json())

api的手册在这里,但没有多大帮助:

http://www.scb.se/en_/About-us/Open-data-API/API-for-the-Statistical-Database-/

1 个答案:

答案 0 :(得分:5)

设置json=payload,请求将添加您需要的标头:

url = 'http://api.scb.se/OV0104/v1/doris/en/ssd/BE/BE0101/BE0101A/BefolkningNy'
payload = ....


r = requests.post(url, json=payload)

那会给你你的json:

In [7]: 
   ...: r = requests.post(url, json=payload)
   ...: print(r.json())
   ...: 
{u'data': [{u'values': [u'2054343'], u'key': [u'01', u'2010']}, {u'values': [u'2091473'], u'key': [u'01', u'2011']}], u'comments': [], u'columns': [{u'text': u'region', u'code': u'Region', u'type': u'd'}, {u'text': u'year', u'code': u'Tid', u'type': u't'}, {u'text': u'Population', u'code': u'BE0101N1', u'type': u'c'}]}

如果碰巧遇到 json.decoder.JSONDecodeError:意外的UTF-8 BOM(使用utf-8-sig解码):错误将编码设置为 utf-8-sig

r = requests.post(url, json=payload)
r.encoding = "utf-8-sig"
print(r.json())