Golang JSON如何解码具有不同元素数据类型的二维数组

Question

I need to parse json data, and I have no problem parsing object structures or pure arrays (of the same type of elements)

go version go1.12.9 darwin/amd64

Json format for ([uint8,uint8,uint32,uint16,uint16,[3][20]int16][])

[
    [
        0,
        0,
        297,
        153,
        78,
        [
            [1871, 1547, ...],
            [...],
            [...]
        ]
    ]
    ...
]

Needs to be resolved to the following structure

type HeartBeat struct {
    Template uint8
    Calssify uint8
    Index    uint32
    Tr       uint16
    Hr       uint16
    Feature  [3][20]int16
}

How to parse

Answer 1

One way you can do is:

decoder:=json.NewDecoder(input)
decoder.UseNumber()
var array []interface{}
decoder.Decode(&array)
heartBeat.Template=uint8(array[0].(json.Number).Int64())
heartBeat.Index=uint32(array[2].(json.Number).Int64())
...
feature:=array[5].([]interface{})
heartBeat.Feature[0][0]=int16(feature[0].([]interface{})[0].(json.Number).Int64())

Of course, you have to add error and bounds checking to the code.