code tuning for ES6

modules/reports/routes/rpt_tpl_router_fe.js

@@ -2,10 +2,11 @@
  * Created by Tony on 2017/6/26.
  * 报表模板路由 - 前台专用（无任何update）
  */
-let express = require("express");
+import express from "express";
+let rptTplRouter = express.Router();
+import reportTplController from "./../controllers/rpt_tpl_controller";
+
 module.exports = function (app) {
-    let rptTplRouter = express.Router();
-    let reportTplController = require('./../controllers/rpt_tpl_controller');
     rptTplRouter.post('/getRptTplTree', reportTplController.getRptTplTree);
 
     app.use("/report_tpl_api", rptTplRouter);