Go c、 JSON gin.H{（）}输出空对象

我刚刚开始学习GO（lang）与Gin框架的结合，我决定编写一些简单的api来获取有关酒精饮料的数据

我目前的问题是api（get方法on

http://localhost:8080/alcohol-饮料

）返回空数据对象

我的代码：

package main

import (
    "github.com/gin-gonic/gin"
)

type alcoholDrink struct {
    name             string
    description      string
    nutritionsAmount string
    nutritions       map[string]string
}

func main() {
    r := gin.Default()
    r.GET("/alcohol-drinks", func(c *gin.Context) {

        d := []alcoholDrink{
            {
                name:             "Gin",
                description:      "DescriptionGin is a distilled alcoholic drink that derives its predominant flavour from juniper berries. Gin is one of the broadest categories of spirits, all of various origins, styles, and flavour profiles, that revolve around juniper as a common ingredient",
                nutritionsAmount: "per 100 grams",
                nutritions: map[string]string{
                    "Calories":     "263",
                    "TotalFat":     "0 g",
                    "Cholesterol":  "0 mg",
                    "Sodium":       "2 mg",
                    "Carbohydrate": "0 g",
                    "Protein":      "0 g",
                },
            },
            {
                name:             "Vodka",
                description:      "odka is a clear distilled alcoholic beverage with different varieties originating in Poland and Russia. It is composed primarily of water and ethanol, but sometimes with traces of impurities and flavorings.",
                nutritionsAmount: "per 100 grams",
                nutritions: map[string]string{
                    "Calories":     "231",
                    "TotalFat":     "0 g",
                    "Cholesterol":  "0 mg",
                    "Sodium":       "1 mg",
                    "Carbohydrate": "0 g",
                    "Protein":      "0 g",
                },
            },
        }

        c.JSON(200, gin.H{
            "status": "OK",
            "code":   200,
            "data":   d,
        })

    })
    r.Run()
}

---

问题是，我需要如何处理变量

d

，以便在浏览器中输出数据？

小写字段被视为私有字段，不会由标准json序列化程序序列化

更改

类型的字段，使其以大写字母开头：

type alcoholDrink struct {
    Name             string
    Description      string
    NutritionsAmount string
    Nutritions       map[string]string
}

如果希望在生成的json中看到小写名称，可以向每个字段添加注释：

type alcoholDrink struct {
    Name             string    `json:"name"`
    Description      string    `json:"description"`
    NutritionsAmount string    `json:"nutritionsAmount"`
    Nutritions       map[string]string   `json:"nutritions"`
}