├── main.go
└── i18n
    ├── en.toml
    └── zh-CN.toml

"ReuiredUserName" = "Please input user name"
"ReuiredUserType" = "Please select user type"

"ReuiredUserName" = "请输入用户名称"
"ReuiredUserType" = "请选择用户类型"

package main

import (
	"github.com/gogf/gf/v2/frame/g"
	"github.com/gogf/gf/v2/i18n/gi18n"
	"github.com/gogf/gf/v2/os/gctx"
	"github.com/gogf/gf/v2/util/gconv"
)

func main() {
	type User struct {
		Name string `v:"required#ReuiredUserName"`
		Type int    `v:"required#ReuiredUserType"`
	}
	var (
		ctx  = gctx.New()
		data = g.Map{
			"name": "john",
		}
		user  = User{}
		ctxEn = gi18n.WithLanguage(ctx, "en")
		ctxCh = gi18n.WithLanguage(ctx, "zh-CN")
	)

	if err := gconv.Scan(data, &user); err != nil {
		panic(err)
	}
	// 英文 
	if err := g.Validator().Assoc(data).Data(user).Run(ctxEn); err != nil {   
		g.Dump(err.String())
	}
	// 中文 
	if err := g.Validator().Assoc(data).Data(user).Run(ctxCh); err != nil {   
		g.Dump(err.String())
	}
}

Please select user type
请选择用户类型