将JSON顶级数组解组为字符串到字符串的映射

Question

I'm trying to unmarshal a JSON array of the following type:

[
{"abc's": "n;05881364"},
{"abcoulomb": "n;13658345"},
{"abcs": "n;05881364"}
]

into a map[string]string. This question Golang parse JSON array into data structure almost answered my problem, but mine is a truly map, not an array of maps. Unmarshaling into a []map[string]string worked but I now get a map of map[string]string, not a simple map of string as it should be

Answer 1

There is no way to do it directly with the json package; you have to do the conversion yourself. This is simple:

package main

import (
    "encoding/json"
    "fmt"
)

func main() {
    data := []byte(`
        [
        {"abc's": "n;05881364"},
        {"abcoulomb": "n;13658345"},
        {"abcs": "n;05881364"}
        ]
    `)

    var mapSlice []map[string]string
    if err := json.Unmarshal(data, &mapSlice); err != nil {
        panic(err)
    }
    resultingMap := map[string]string{}
    for _, m := range mapSlice {
        for k, v := range m {
            resultingMap[k] = v
        }
    }
    fmt.Println(resultingMap)
}

Output

map[abc's:n;05881364 abcoulomb:n;13658345 abcs:n;05881364]