arrays - Golang : Parsing two array of arrays in JSON, 使用相同的结构

Question

<分区>

Answer 1

package main

import (
    "encoding/json"
    "fmt"
)

var j = `{
    "code": 10000,
    "msg": "Successful request processing",
    "asks": [ 
        [
            "0.03434400",
            "0.31100000"
        ],
        [
            "0.03436300",
            "0.18900000"
        ]


    ],
    "bids": [ 
        [
            "0.03427400", 
            "0.21100000"  
        ]
        ]
    }
        `

type Box struct {
    Number  int          `json:"code"`
    Message string       `json:"msg"`
    Asks    []MarketData `json:"asks"`
    Bids    []MarketData `json:"bids"`
}

type MarketData struct {
    SellPrice    string
    SellQuantity string
}

func (md *MarketData) UnmarshalJSON(d []byte) error {
    val := []string{}
    err := json.Unmarshal(d, &val)
    if err != nil {
        return err
    }
    if len(val) != 2 {
        return fmt.Errorf("MarketData unmarshal error len != 2")
    }
    md.SellPrice = val[0]
    md.SellQuantity = val[1]
    return nil
}

func main() {
    ins := new(Box)
    err := json.Unmarshal([]byte(j), ins)
    if err != nil {
        panic(err)
    }
    fmt.Printf("%+v\n", ins)
}

https://play.golang.org/p/EKH3ICJJuZ_W