golang中json和struct的使用说明

type SuccessResponse struct {
   Code int         `json:"code"`
   Msg  string      `json:"msg"`
   Data interface{} `json:"data"`
}
func SuccessRsp(ctx *gin.Context, data interface{}) {
   res := SuccessResponse{
      Code: 0,
      Msg:  "success",
      Data: data,
   }
   ctx.JSON(http.StatusOK, res)
}
type MyData struct {
   Id    int         `json:"id"`
   Name  string      `json:"name"`
}
func ListAllOncallPlan(ctx *gin.Context)  {
   //你的业务代码
   //......
   data = Mydata{Id:1, Name:"zhangsan"}
   SuccessRsp(ctx, plans)
}
响应的结果为：
{
   "code": 0,
   "msg": "ok",
   "data": {
      "id": 1,
      "name": "zhangsan"
   }
}

type MyData struct {
   Id    int         `json:"id,omitempty"`
   Name  string      `json:"name"`
}
data = Mydata{Name:"zhangsan"}
SuccessRsp(ctx, plans)

{
   "code": 0,
   "msg": "ok",
   "data": {
      "name": "zhangsan"
   }
}

type MyData struct {
   Id    int         `json:"-"`
   Name  string      `json:"name"`
}

type User struct {
   Id          int64     `gorm:"column:id" json:"id"`
   Name        string    `gorm:"column:name" json:"name,omitempty"`
}

func AddJsonFormGormTag(in string) (string) {
	var result string
	scanner := bufio.NewScanner(strings.NewReader(in))
	var oldLineTmp = ""
	var lineTmp = ""
	var propertyTmp = ""
	var seperateArr []string
	for scanner.Scan() {
		oldLineTmp = scanner.Text()
		lineTmp = strings.Trim(scanner.Text(), " ")
		if strings.Contains(lineTmp, "{") || strings.Contains(lineTmp, "}") {
			result = result + oldLineTmp + "\n"
			continue
		}
		seperateArr = Split(lineTmp, " ")
		// 接口或者父类声明不参与tag, 自带tag不参与tag
		if len(seperateArr) == 1 || len(seperateArr) == 3 {
			continue
		}
		propertyTmp = HumpToUnderLine(seperateArr[0])
		oldLineTmp = oldLineTmp + fmt.Sprintf("    `gorm:\"column:%s\" json:\"%s\" form:\"%s\"`", propertyTmp, propertyTmp, propertyTmp)
		result = result + oldLineTmp + "\n"
	}
	return result
}
// 增强型split，对  a,,,,,,,b,,c     以","进行切割成[a,b,c]
func Split(s string, sub string) []string {
	var rs = make([]string, 0, 20)
	tmp := ""
	Split2(s, sub, &tmp, &rs)
	return rs
}
// 附属于Split，可独立使用
func Split2(s string, sub string, tmp *string, rs *[]string) {
	s = strings.Trim(s, sub)
	if !strings.Contains(s, sub) {
		*tmp = s
		*rs = append(*rs, *tmp)
		return
	}
	for i, _ := range s {
		if string(s[i]) == sub {
			*tmp = s[:i]
			*rs = append(*rs, *tmp)
			s = s[i+1:]
			Split2(s, sub, tmp, rs)
			return
		}
	}
}
// 驼峰转下划线
func HumpToUnderLine(s string) string{
	if s =="ID" {
		return "id"
	}
	var rs string
	elements:=FindUpperElement(s)
	for _,e :=range elements{
		s =strings.Replace(s, e, "_"+strings.ToLower(e),-1)
	}
	rs = strings.Trim(s," ")
	rs = strings.Trim(rs,"\t")
	return strings.Trim(rs,"_")
}
// 找到字符串中大写字母的列表,附属于HumpToUnderLine
func FindUpperElement(s string) []string {
	var rs = make([]string, 0, 10)
	for i := range s {
		if s[i] >= 65 && s[i] <= 90 {
			rs = append(rs, string(s[i]))
		}
	}
	return rs
}

func TestAddJsonFormTag(t *testing.T) {
 rs := AddJsonFormGormTag(`
 type User struct{
  Id        uint64
  NameSpace  string
  DailyRoutine int
 }
 `)
 fmt.Println(rs)
}

 type User struct{
  Id        uint64    `gorm:"column:id" json:"id" form:"id"`
  NameSpace  string    `gorm:"column:name_space" json:"name_space" form:"name_space"`
  DailyRoutine int    `gorm:"column:daily_routine" json:"daily_routine" form:"daily_routine"`
 }