GoLang获取struct的tag

 1 package main
 2 import (
 3     "fmt"
 4     "reflect" // 这里引入reflect模块
 5 )
 6 type User struct {
 7     Name   string "user name" //这引号里面的就是tag
 8     Passwd string "user passsword"
 9 }
10 func main() {
11     user := &User{"chronos", "pass"}
12     s := reflect.TypeOf(user).Elem() //通过反射获取type定义
13     for i := 0; i < s.NumField(); i++ {
14         fmt.Println(s.Field(i).Tag) //将tag输出出来
15     }
16 }

 1 package main
 2  
 3 import (
 4     "fmt"
 5     "reflect"
 6 )
 7  
 8 func main() {
 9     type S struct {
10         F string `species:"gopher" color:"blue"`
11     }
12  
13     s := S{}
14     st := reflect.TypeOf(s)
15     field := st.Field(0)
16     fmt.Println(field.Tag.Get("color"), field.Tag.Get("species"))
17  
18 }