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構造体のフィールドを列挙する

Last updated at Posted at 2015-01-29
package main

import (
	"reflect"
	"strconv"
)

type Test struct {
	Field1 string
	Field2 string
	Field3 int
}

func main() {

	st := Test{"value1", "value2", 1234}

	v := reflect.Indirect(reflect.ValueOf(st))
	t := v.Type()

	for i := 0; i < t.NumField(); i++ {
		// フィールド名
		println("Field: " + t.Field(i).Name)

		// 値
		f := v.Field(i)
		i := f.Interface()
		if value, ok := i.(int); ok {
			println("Value: " + strconv.Itoa(value))
		} else {
			println("Value: " + f.String())
		}
	}
}

https://play.golang.org/p/krjCI9Zvhn

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