Golang map如何生成有序的json数据详解

list := make(map[string]interface{})
list["id"] = detail["id"]
list["game_name"] = detail["game_name"]
list["game_logo"] = detail["game_m_logo"]
gameTags, _ := utils.InterfaceToStr(detail["game_tags"])
list["game_tags"] = strings.Split(gameTags, ",")
list["game_desc"] = detail["game_long_desc"]
list["play_total_times"] = 33333
testImages := make(map[int]map[string]string)
testImages[1] = map[string]string{"video": "xxx"}
testImages[2] = map[string]string{"image": "yyy1"}
testImages[3] = map[string]string{"image": "yyy2"}
testImages[5] = map[string]string{"image": "yyy5"}
testImages[4] = map[string]string{"image": "yyy3"}
list["previews"] = testImages
 
fmt.Println("test list:", list)

{
 "data": {
  "game_desc": "从秀才一路前进，你最终能官居几品？ 为了完成父亲的遗愿，你走上了这条漫漫升官路。 最终你会成为什么样的人？ ",
  "game_logo": "http://image.egret.com/game/gameIcon/181/90681/icon_200.jpg?1472698847",
  "game_name": "官居几品",
  "game_tags": [
   "呵呵"
  ],
  "id": "3",
  "play_total_times": 33333,
  "previews": {
   "1": {
    "video": "xxx"
   },
   "2": {
    "image": "yyy1"
   },
   "3": {
    "image": "yyy2"
   },
   "4": {
    "image": "yyy3"
   },
   "5": {
    "image": "yyy5"
   }
  }
 },
 "msg": "ok",
 "result": 0
}