python - 使用 Python 请求和 x-www-form-urlencoded 发送嵌套 json 数据

Question

我不知道该怎么做。基本上有一个特定的 API 需要

'Content-Type': 'application/x-www-form-urlencoded;字符集=UTF-8'

但他们希望表单数据是这样的:

stockLevels=[
  {
    "SKU": "sample string 1",
    "LocationId": "de0f1890-0c49-4834-b8cd-8b766fba496a",
    "Level": 3
  },
  {
    "SKU": "sample string 1",
    "LocationId": "de0f1890-0c49-4834-b8cd-8b766fba496a",
    "Level": 3
  }
]

我正在做的是这样的:

def change_stock_quantity(self, SKU, qty):
    # Note that this will change quantity of just one item
    # instead of two like in the example above
    payload = {
        'stockLevels':[{
          'SKU': SKU,
          'LocationId': self.ebay1_location_id,
          'Level': qty,
        }]
    }
    r = self.session.post(self.session_server + '//api/Stock/SetStockLevel',
                  data=payload)

    print r.request.body
    # stockLevels=SKU&stockLevels=LocationId&stockLevels=Level
    # this is not correct, it should be something like:
    # stockLevels:[{"SKU":"P01", "LocationId":"00000000", "Level":4}]

    print r
    # <Response [400]> (obivously)

关于我做错了什么有什么想法吗？

Answer 1

挖掘完这个GitHub repo's examples ，他们的方法似乎如下:

1. 正文确实是x-www-form-urlencoded
2. 复杂参数是针对 x-www-form-urlencoded 编码的 JSON 字符串

所以看看their PHP example对于 CreateVariationGroup打电话，试试这个:

stockLevels=[
  {
    "SKU": "sample string 1",
    "LocationId": "de0f1890-0c49-4834-b8cd-8b766fba496a",
    "Level": 3
  },
  {
    "SKU": "sample string 1",
    "LocationId": "de0f1890-0c49-4834-b8cd-8b766fba496a",
    "Level": 3
  }
]

payload = {'stockLevels' : json.dumps(stockLevels)}

# send payload encoded with x-www-form-urlencoded