router1.go

package routers

import (
	"github.com/astaxie/beego"
	"apidemo/controllers"
)


func init() {
	ns := beego.NewNamespace("/v1",
			beego.NSNamespace("/user",
				beego.NSInclude(
					&controllers.UserController{},
				),
			),
	)
	beego.AddNamespace(ns)
}

user1.go

package controllers

import (
	"github.com/astaxie/beego"
	"apidemo/models"
)

func (c *UserController) URLMapping() {
	c.Mapping("Get", c.Get)
}

type UserController struct {
	beego.Controller
}

// @router / [get]
func (u *UserController) Get() {
	users := models.GetAllUsers()
	u.Data["json"] = users
	u.ServeJson()
}