add example for package gvalid

.example/util/gvalid/gvalid_i18n_http.go

@@ -0,0 +1,35 @@
+package main
+
+import (
+	"github.com/gogf/gf/net/ghttp"
+
+	"github.com/gogf/gf/frame/g"
+	"github.com/gogf/gf/i18n/gi18n"
+)
+
+func main() {
+	type User struct {
+		Name    string `v:"required#ReuiredUserName"`
+		Type    int    `v:"required#ReuiredUserType"`
+		Project string `v:"size:10#MustSize"`
+	}
+	s := g.Server()
+	s.Group("/", func(group *ghttp.RouterGroup) {
+		group.Middleware(func(r *ghttp.Request) {
+			lang := r.GetString("lang", "zh-CN")
+			r.SetCtx(gi18n.WithLanguage(r.Context(), lang))
+			r.Middleware.Next()
+		})
+		group.GET("/validate", func(r *ghttp.Request) {
+			var (
+				err  error
+				user = User{}
+			)
+			if err = r.Parse(&user); err != nil {
+				r.Response.WriteExit(err)
+			}
+			r.Response.WriteExit(user)
+		})
+	})
+	s.SetPort(8199)
+}