转换顺序:先将struct结构体转为map,再将map转为string字符串

struct --> map --> string

type demo struct {
	Id                    string
	Name	              string
}
func main() {

demos := [{"Id":"1","Name":"zs"},{"Id":"2","Name":"ls"},{"Id":"3","Name":"ww"}]

for _, v := range demos {
		tmpdata := Struct2Map(v)
		str, err := json.Marshal(tmpdata)
		if err != nil {
			fmt.Println(err)
		}		
	fmt.println(string(str))
 }

}
//结构体转为map
func Struct2Map(obj interface{}) map[string]interface{} {
	t := reflect.TypeOf(obj)
	v := reflect.ValueOf(obj)

	var data = make(map[string]interface{})
	for i := 0; i < t.NumField(); i++ {
		data[t.Field(i).Name] = v.Field(i).Interface()
	}
	return data
}