12. 结构体

用法

type Box struct {
    Width int `info:"width" desc:"盒子宽度"`
    Height int `info:"height" desc:"盒子高度"`
}

通过反射获取

package main
import (
    "fmt"
    "reflect"
)
type Box struct {
    Width int `info:"width" desc:"盒子宽度"`
    Height int `info:"height" desc:"盒子高度"`
}
// 遍历结构体字段
func do(obj interface{})  {
    elem := reflect.TypeOf(obj).Elem()
    for i:=0;i<elem.NumField();i++{
        field := elem.Field(i)
        fmt.Printf("Field:%v Desc:%v\n",field.Tag.Get("info"),field.Tag.Get("desc"))
    }
}
func main() {
    box  :=Box{
        Width:  10,
        Height: 20,
    }
    do(&box)
}

Field:width Desc:盒子宽度
Field:height Desc:盒子高度