当Golang的元帅转换为json时，数组部分变成了object，所以我想保留数组

Question

What I want to do

• Convert {"color": "red", "mrkdwn_in":["text"]} in json to a structure with UnMarshal
• Change "color" from 'red' to 'blue'
• Change the changed structure to json with Marshal
• The original "mrkdwn_in":["text"]} is not well preserved.
  • It becomes "mrkdwn_in":[{"text":""}] or "mrkdwn_in":"" .
• I want to keep the "mrkdwn_in" part in its original state.

code

package main

import (
    "encoding/json"
    "fmt"
)

type TestStruct struct {
    Color        string       `json:"color"`
    MrkdwnIn     []MrkdwnIn   `json:"mrkdwn_in"`
}

type MrkdwnIn struct {
    Text string `json:"text"`
}

func main() {
    jsonData1 := "{\"color\":\"red\",\"mrkdwn_in\":[\"text\"]}"
    var body TestStruct
    json.Unmarshal([]byte(jsonData1), &body)
    body.Color = "blue"
    var jsonData2 []byte
    jsonData2, _ = json.Marshal(body)

    jsonDataText := string(jsonData2)
    fmt.Println(jsonDataText)
}

Execution result of the above code

Answer 1

The error is obvious

MrkdwnIn     []MrkdwnIn   `json:"mrkdwn_in"`

MrkdwnIn is a array of object

MrkdwnIn     []string`json:"mrkdwn_in"`

MrkdwnIn should be a array of string