Go的gin参数校验中的validator库详解

package main
import (
	"fmt"
	"github.com/go-playground/validator/v10"
	"github.com/go-playground/locales/zh_Hans_CN"
	unTrans "github.com/go-playground/universal-translator"
	zhTrans "github.com/go-playground/validator/v10/translations/zh"
)
type User struct {
	Username string `validate:"min=6,max=10,contains=ook,startswith=He"`
	Age      uint8  `validate:"gte=1,lte=10"`
	Sex      string `validate:"oneof=female male"`
	Email    string `validate:"email"`
}
func main() {
	validate := validator.New()
	//user := User{Username: "Heooking", Age: 6, Sex: "male", Email: "test@qq.com"}
	user := User{Username: "Looking", Age: 26, Sex: "male", Email: "qq.com"}
	err := validate.Struct(user)
	// 默认英文提示
	if err != nil {
		fmt.Println(err)
		//Key: 'User.Username' Error:Field validation for 'Username' failed on the 'startswith' tag
		//Key: 'User.Age' Error:Field validation for 'Age' failed on the 'lte' tag
		//Key: 'User.Email' Error:Field validation for 'Email' failed on the 'email' tag
	}
	fmt.Println()
	// 中文错误提示
	uni := unTrans.New(zh_Hans_CN.New())
	trans, _ := uni.GetTranslator("zh_Hans_CN")
	zhTrans.RegisterDefaultTranslations(validate, trans)
	if err != nil {
		for _, v := range err.(validator.ValidationErrors) {
			fmt.Println(v.Translate(trans))
			//Username必须以文本'He'开头
			//Age必须小于或等于10
			//Email必须是一个有效的邮箱
		}
	}
}

module test
go 1.17
require (
	github.com/go-playground/validator/v10 v10.15.0
)
require (
	github.com/gabriel-vasile/mimetype v1.4.2 // indirect
	github.com/go-playground/locales v0.14.1 // indirect
	github.com/go-playground/universal-translator v0.18.1 // indirect
	github.com/leodido/go-urn v1.2.4 // indirect
	golang.org/x/crypto v0.7.0 // indirect
	golang.org/x/net v0.8.0 // indirect
	golang.org/x/sys v0.6.0 // indirect
)