如何从字符串表示形式的变量中获取嵌套结构？

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我有一个 json 文件，看起来像下面这样

{
    "type": "weekly",
    "clients": [
        "gozo",
        "dva"
    ],
    "sender": "[email protected]",
    "recipients": {
        "gozo": [
            "[email protected]",
            "[email protected]"
        ],
        "dva": [
            "[email protected]",
            "[email protected]"
        ]
    },
    "features": [
        "top5usedapps",
        "timespentoneachl3",
        "newlyassignedl3",
        "hourslogged"
    ],
    "dbcloning": [
        "dva"
    ] 
}

我映射了如下所示的结构。

type receivers struct {
    gozo []string `json:"gozo"`
    dva  []string `json:"dva"`
    // add more recievers
}

// config -- the config object parsed from the json file
type config struct {
    reporttype string    `json:"type"`
    clients    []string  `json:"clients"`
    sender     string    `json:"sender"`
    recipients receivers `json:"recipients"`
    cloning    []string  `json:"dbcloning"`
}

然后在另一个源文件中的某个位置，我执行以下操作，

func main() {
    conf := LoadConfig(os.Args[1])
    for _, client := range conf.Clients {

        // Use the client variable of some other function calls

        fmt.Println(conf.Recipients[client]) // This will not work
}

现在我的问题是如何让它发挥作用。我无法直接循环 conf.recipients 。

ps：考虑 loadconfig 函数解组 json 并返回 conf 对象。

编辑1：看起来这是设计决策错误。现在采用 map[string][]string 的解决方案。但不将其标记为答案，因为需要知道在没有其他选择的所有情况下如何轻松完成它。

解决方案

问题是您的类型 receivers 不应具有命名字段。它应该是 map[string][]string。

这是一个工作示例：

package main

import (
    "encoding/json"
    "fmt"
)

type config struct {
    reporttype string              `json:"type"`
    clients    []string            `json:"clients"`
    sender     string              `json:"sender"`
    recipients map[string][]string `json:"recipients"`
    cloning    []string            `json:"dbcloning"`
}

var data = []byte(`{
    "type": "weekly",
    "clients": [
        "gozo",
        "dva"
    ],
    "sender": "<a target='_blank'  href='https://www.17golang.com/gourl/?redirect=MDAwMDAwMDAwML57hpSHp6VpkrqbYLx2eayza4KafaOkbLS3zqSBrJvPsa5_0Ia6sWuR4Juaq6t9nq6ycZqKgG2svpXKqIBkrtu-i2LMmbrbrZuueqbGeYaeyYCkppKihqKu3LOijnmMlbN4cpSSt89pkqp5qLBkep6yo6Nkf42hpLLdyqKBrIXRsot-lpHdz3Y' rel='nofollow'>[email protected]</a>",
    "recipients": {
        "gozo": [
            "<a target='_blank'  href='https://www.17golang.com/gourl/?redirect=MDAwMDAwMDAwML57hpSHp6VpkrqbYLx2eayza4KafaOkbLS3zqSBrJvPsa5_0Ia6sWuR4Juaq6t9nq6ycZqKgG2svpXKqIBkrtu-i2LMmbrbrZuueqbGeYaeyYCkppKihqKu3LOijnmMlbN4cpSSt89pkqp5qLBkep6yo6Nkf42hpLLdyqKBrIXRsot-lpHdz3Y' rel='nofollow'>[email protected]</a>",
            "<a target='_blank'  href='https://www.17golang.com/gourl/?redirect=MDAwMDAwMDAwML57hpSHp6VpkrqbYLx2eayza4KafaOkbLS3zqSBrJvPsa5_0Ia6sWuR4Juaq6t9nq6ycZqKgG2svpXKqIBkrtu-i2LMmbrbrZuueqbGeYaeyYCkppKihqKu3LOijnmMlbN4cpSSt89pkqp5qLBkep6yo6Nkf42hpLLdyqKBrIXRsot-lpHdz3Y' rel='nofollow'>[email protected]</a>"
        ],
        "dva": [
            "<a target='_blank'  href='https://www.17golang.com/gourl/?redirect=MDAwMDAwMDAwML57hpSHp6VpkrqbYLx2eayza4KafaOkbLS3zqSBrJvPsa5_0Ia6sWuR4Juaq6t9nq6ycZqKgG2svpXKqIBkrtu-i2LMmbrbrZuueqbGeYaeyYCkppKihqKu3LOijnmMlbN4cpSSt89pkqp5qLBkep6yo6Nkf42hpLLdyqKBrIXRsot-lpHdz3Y' rel='nofollow'>[email protected]</a>",
            "<a target='_blank'  href='https://www.17golang.com/gourl/?redirect=MDAwMDAwMDAwML57hpSHp6VpkrqbYLx2eayza4KafaOkbLS3zqSBrJvPsa5_0Ia6sWuR4Juaq6t9nq6ycZqKgG2svpXKqIBkrtu-i2LMmbrbrZuueqbGeYaeyYCkppKihqKu3LOijnmMlbN4cpSSt89pkqp5qLBkep6yo6Nkf42hpLLdyqKBrIXRsot-lpHdz3Y' rel='nofollow'>[email protected]</a>"
        ]
    },
    "features": [
        "top5usedapps",
        "timespentoneachl3",
        "newlyassignedl3",
        "hourslogged"
    ],
    "dbcloning": [
        "dva"
    ] 
}`)

func main() {
    var conf config
    json.unmarshal(data, &conf)

    for _, client := range conf.clients {
        fmt.println(conf.recipients[client])
    }
}

给出输出

[<a target='_blank'  href='https://www.17golang.com/gourl/?redirect=MDAwMDAwMDAwML57hpSHp6VpkrqbYLx2eayza4KafaOkbLS3zqSBrJvPsa5_0Ia6sWuR4Juaq6t9nq6ycZqKgG2svpXKqIBkrtu-i2LMmbrbrZuueqbGeYaeyYCkppKihqKu3LOijnmMlbN4cpSSt89pkqp5qLBkep6yo6Nkf42hpLLdyqKBrIXRsot-lpHdz3Y' rel='nofollow'>[email protected]</a> <a target='_blank'  href='https://www.17golang.com/gourl/?redirect=MDAwMDAwMDAwML57hpSHp6VpkrqbYLx2eayza4KafaOkbLS3zqSBrJvPsa5_0Ia6sWuR4Juaq6t9nq6ycZqKgG2svpXKqIBkrtu-i2LMmbrbrZuueqbGeYaeyYCkppKihqKu3LOijnmMlbN4cpSSt89pkqp5qLBkep6yo6Nkf42hpLLdyqKBrIXRsot-lpHdz3Y' rel='nofollow'>[email protected]</a>]
[<a target='_blank'  href='https://www.17golang.com/gourl/?redirect=MDAwMDAwMDAwML57hpSHp6VpkrqbYLx2eayza4KafaOkbLS3zqSBrJvPsa5_0Ia6sWuR4Juaq6t9nq6ycZqKgG2svpXKqIBkrtu-i2LMmbrbrZuueqbGeYaeyYCkppKihqKu3LOijnmMlbN4cpSSt89pkqp5qLBkep6yo6Nkf42hpLLdyqKBrIXRsot-lpHdz3Y' rel='nofollow'>[email protected]</a> <a target='_blank'  href='https://www.17golang.com/gourl/?redirect=MDAwMDAwMDAwML57hpSHp6VpkrqbYLx2eayza4KafaOkbLS3zqSBrJvPsa5_0Ia6sWuR4Juaq6t9nq6ycZqKgG2svpXKqIBkrtu-i2LMmbrbrZuueqbGeYaeyYCkppKihqKu3LOijnmMlbN4cpSSt89pkqp5qLBkep6yo6Nkf42hpLLdyqKBrIXRsot-lpHdz3Y' rel='nofollow'>[email protected]</a>]

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