跨域访问WebApi服务器是出现 No 'Access-Control-Allow-Origin' 的问题

baseController.go

package controllers

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

type Controller struct {
	beego.Controller
}

func (this *Controller) Prepare() {
	this.Ctx.ResponseWriter.Header().Add("Access-Control-Allow-Origin", "*")
}