gin表单验证显示中文

概述

官网-验证器包

例子

使用反射发的方式

简单使用

package main

import (
	"fmt"

	"gopkg.in/go-playground/validator.v9"
)

// 安装   go get gopkg.in/go-playground/validator.v9

type InputLogin struct {
	Email    string `validate:"required,email"`
	Password string `validate:"required,max=16,min=6"`
	Code     int    `validate:"gte=1000,lte=9999"`
}

func main() {
	v := validator.New()
	input := &InputLogin{
		Email:    "jet@23.com",
		Password: "123456",
		Code:     4444,
	}
	err := v.Struct(input)
	if err != nil {
		for _, err := range err.(validator.ValidationErrors) {
			fmt.Println(err)
		}
		return
	}
	fmt.Println("ok")
}

• 提示消息英文
• 提示消息是固定的

翻译

package main

import (
	"fmt"
	"reflect"

	"github.com/go-playground/locales/zh"
	ut "github.com/go-playground/universal-translator"
	"gopkg.in/go-playground/validator.v9"
	zhTranslations "gopkg.in/go-playground/validator.v9/translations/zh"
)

// 安装   go get gopkg.in/go-playground/validator.v9

type InputLogin struct {
	Email    string `json:"email" validate:"required,email" label:"邮箱"`
	Password string `json:"password" validate:"required,max=16,min=6" label:"密码"`
	Code     int    `json:"code" validate:"gte=1000,lte=9999" label:"验证码"`
	C1       string `json:"c1" validate:"checkName" label:"测试字段"`
}

func checkName(fl validator.FieldLevel) bool {

	val := fl.Field().String()

	l1 := fl.GetTag()
	fmt.Println(l1)
	l2 := fl.Param()
	fmt.Println(l2)

	fmt.Println("----->", val)
	//如果是张三就会触发验证
	return val != "张三"
}

func main() {

	input := &InputLogin{
		Email:    "jet@dsd.com",
		Password: "12356",
		Code:     444411,
		C1:       "张三",
	}

	//中文翻译器
	zh_ch := zh.New()

	uni := ut.New(zh_ch)
	trans, _ := uni.GetTranslator("zh")

	v := validator.New()
	//注册自定义验证函数
	v.RegisterValidation("checkName", checkName)
	//注册翻译器
	zhTranslations.RegisterDefaultTranslations(v, trans)

	// 自定义错误信息
	v.RegisterTranslation("checkName", trans, func(ut ut.Translator) error {
		return ut.Add("checkName", "{0}字段名称不能叫张三!", true)
	}, func(ut ut.Translator, fe validator.FieldError) string {
		t, _ := ut.T("checkName", fe.Field())
		return t
	})

	v.RegisterTagNameFunc(func(field reflect.StructField) string {

		fmt.Println("----->", field.Name)

		//通过反射取出label
		label := field.Tag.Get("label")

		//fmt.Sprint
		return fmt.Sprint(field.Name, ",", label)
	})

	err := v.Struct(input)
	if err != nil {
		for _, err := range err.(validator.ValidationErrors) {
			//翻译输出
			m := err.Translate(trans)
			fmt.Println(m)
		}

		return
	}
	fmt.Println("ok")

}

打印结果为

Password,密码长度必须至少为6个字符
Code,验证码必须小于或等于9,999
C1,测试字段字段名称不能叫张三!