go语言-结构体标签

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