dttphb59319
2016-08-09 22:15
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如何在Golang中将具有两种不同数据类型的JSON数组解析为结构

I have JSON that looks like this:

{
    "a": [
          [
              "12.58861425",
              10.52046452
          ],
          [
              "12.58861426",
              4.1073
          ]
        ]
    "b": [
          [
              "12.58861425",
              10.52046452
          ],
          [
              "12.58861426",
              4.1073
          ]
        ]
    "c": "true"
    "d": 1234
}
        

I want to unmarshall this into a struct I created:

type OrderBook struct {
    A [][2]float32 `json:"a"`
    B [][2]float32 `json:"b"`
        C string `json:"c"`
    D uint32 `json:"d"`
}

//Note this won't work because the JSON array contains a string and a float value pair rather than only floats.

Normally I would then convert this JSON into a struct in Golang as so:

orders := new(OrderBook)
err = json.Unmarshal(JSON, &orders)

Since I can't define the type struct to match the JSON this won't work. Doing a bit of reading, I think Unmarshal-ing into an interface, and then using the interface data through type checking may be a solution.

Am I going in the right direction with this?
A template showing how I might go about using the data once it's in the interface would really help.

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