1. 多语言翻译验证

当业务系统对验证信息有特殊需求时，例如：返回信息需要自定义，手机端返回的信息需要是中文而pc端发挥返回的信息需要时英文，如何做到请求一个接口满足上述三种情况。

  1. package main
  3. import (
  4.     "fmt"
  6.     "github.com/gin-gonic/gin"
  7.     "github.com/go-playground/locales/en"
  8.     "github.com/go-playground/locales/zh"
  9.     "github.com/go-playground/locales/zh_Hant_TW"
  10.     ut "github.com/go-playground/universal-translator"
  11.     "gopkg.in/go-playground/validator.v9"
  12.     en_translations "gopkg.in/go-playground/validator.v9/translations/en"
  13.     zh_translations "gopkg.in/go-playground/validator.v9/translations/zh"
  14.     zh_tw_translations "gopkg.in/go-playground/validator.v9/translations/zh_tw"
  15. )
  17. var (
  18.     Uni      *ut.UniversalTranslator
  19.     Validate *validator.Validate
  20. )
  22. type User struct {
  23.     Username string `form:"user_name" validate:"required"`
  24.     Tagline  string `form:"tag_line" validate:"required,lt=10"`
  25.     Tagline2 string `form:"tag_line2" validate:"required,gt=1"`
  26. }
  28. func main() {
  29.     en := en.New()
  30.     zh := zh.New()
  31.     zh_tw := zh_Hant_TW.New()
  32.     Uni = ut.New(en, zh, zh_tw)
  33.     Validate = validator.New()
  35.     route := gin.Default()
  36.     route.GET("/5lmh", startPage)
  37.     route.POST("/5lmh", startPage)
  38.     route.Run(":8080")
  39. }
  41. func startPage(c *gin.Context) {
  42.     //这部分应放到中间件中
  43.     locale := c.DefaultQuery("locale", "zh")
  44.     trans, _ := Uni.GetTranslator(locale)
  45.     switch locale {
  46.     case "zh":
  47.         zh_translations.RegisterDefaultTranslations(Validate, trans)
  48.         break
  49.     case "en":
  50.         en_translations.RegisterDefaultTranslations(Validate, trans)
  51.         break
  52.     case "zh_tw":
  53.         zh_tw_translations.RegisterDefaultTranslations(Validate, trans)
  54.         break
  55.     default:
  56.         zh_translations.RegisterDefaultTranslations(Validate, trans)
  57.         break
  58.     }
  60.     //自定义错误内容
  61.     Validate.RegisterTranslation("required", trans, func(ut ut.Translator) error {
  62.         return ut.Add("required", "{0} must have a value!", true) // see universal-translator for details
  63.     }, func(ut ut.Translator, fe validator.FieldError) string {
  64.         t, _ := ut.T("required", fe.Field())
  65.         return t
  66.     })
  68.     //这块应该放到公共验证方法中
  69.     user := User{}
  70.     c.ShouldBind(&user)
  71.     fmt.Println(user)
  72.     err := Validate.Struct(user)
  73.     if err != nil {
  74.         errs := err.(validator.ValidationErrors)
  75.         sliceErrs := []string{}
  76.         for _, e := range errs {
  77.             sliceErrs = append(sliceErrs, e.Translate(trans))
  78.         }
  79.         c.String(200, fmt.Sprintf("%#v", sliceErrs))
  80.     }
  81.     c.String(200, fmt.Sprintf("%#v", "user"))
  82. }

正确的链接：http://localhost:8080/testing?user_name=枯藤&tag_line=9&tag_line2=33&locale=zh

http://localhost:8080/testing?user_name=枯藤&tag_line=9&tag_line2=3&locale=en 返回英文的验证信息

http://localhost:8080/testing?user_name=枯藤&tag_line=9&tag_line2=3&locale=zh 返回中文的验证信息

查看更多的功能可以查看官网 gopkg.in/go-playground/validator.v9