golang 包名不同，引入相同名称的结构体报错，找 golang 大佬指教

错误信息

# github.com/study/gincms/router
duplicate "".(*IndexController).Index-fm.stkobj
<autogenerated>:1: symbol "".(*IndexController).Index-fm.stkobj listed multiple times

golang 版本

go version go1.12.1 windows/amd64

业务代码截图

package router

import (
	"github.com/study/gincms/controller/admin"
	"github.com/study/gincms/controller/home"
	"github.com/gin-gonic/gin"
)

/**
路由初始化
*/
func RouterInit() *gin.Engine {

	r := gin.Default()

	//前台 API 路由
	homeIndex := new(home.IndexController)
	r.GET("/", homeIndex.Index)
	homeUrl := r.Group("/home")
	{
		homeUrl.GET("/index/index", homeIndex.Index)
	}

	//后台 API 路由
	index := new(admin.IndexController)
	adminUrl := r.Group("/admin")
	{
		adminUrl.GET("/index/index", index.Index)
	}
	return r
}

controller

package admin

import (
	"net/http"
	"github.com/gin-gonic/gin"
)

type IndexController struct{}

func (this *IndexController) Index(ctx *gin.Context) {
	ctx.JSON( http.StatusOK, gin.H{
		"message": "111",
	})
}



package home

import (
	"net/http"
	"github.com/gin-gonic/gin"
)

type IndexController struct{}

func (this *IndexController) Index(ctx *gin.Context) {
	ctx.JSON( http.StatusOK, gin.H{
		"message": "2222",
	})
}