go语言json嵌套数组结构体用法

一、转换思路

• 一个json对象就是一个结构体
• 一个json数组就是一个切片
• json数组放json对象就是切片里面放结构体

二、实例

package main

import(
	"encoding/json"
	"fmt"
)


type Order struct{
	OrderId string `json:"order_id"`
	OrderPrice float64 `json:"order_price"`
	Goods []Good `json:"good"`
}

type Good struct{

	GoodsName string `json:"goods_name"`
	GoodsPrice float64 `json:"goods_price"`
	GoodsColor []Color `json:"Goods_color"`
}

type Color struct{

	GoodColor string `json:"good_color"`
}

func main(){
	var OrderInfo Order
	OrderInfo.OrderId = "20190707212318"
	OrderInfo.OrderPrice = 26.87
	
	var csli []Color
	csli=append(csli,Color{GoodColor:"红色"})
	csli=append(csli,Color{GoodColor:"蓝色"})

	OrderInfo.Goods =append(OrderInfo.Goods,Good{GoodsName:"手机",GoodsPrice:23.9,GoodsColor:csli})

	OrderInfo.Goods =append(OrderInfo.Goods,Good{GoodsName:"电脑",GoodsPrice:123.9,GoodsColor:csli})

	data ,_ := json.Marshal(OrderInfo)

	fmt.Println(string(data))

	/*
{
	"order_id": "20190707212318",
	"order_price": 26.87,
	"good": [{
		"goods_name": "手机",
		"goods_price": 23.9,
		"Goods_color": [{
			"good_color": "红色"
		}, {
			"good_color": "蓝色"
		}]
	}, {
		"goods_name": "电脑",
		"goods_price": 123.9,
		"Goods_color": [{
			"good_color": "红色"
		}, {
			"good_color": "蓝色"
		}]
	}]
}
	*/


	var temp Order
	err := json.Unmarshal(data,&temp)

	if err !=nil{
		fmt.Println(err)
	}

	fmt.Println(temp)

	//{20190707212318 26.87 [{手机 23.9 [{红色} {蓝色}]} {电脑 123.9 [{红色} {蓝色}]}]}


}

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