Merge branch 'main' of http://khuhub.khu.ac.kr/khusat/khusat-server into main

 const express = require('express');
 const app = express();
-// const cors = require('cors');
+const cors = require('cors');
 const port = 8000;
 
 const mongoose = require('mongoose');
@@ -9,6 +9,14 @@ const bodyParser = require('body-parser');
 app.use(bodyParser.urlencoded({extended:true}));
 app.use(bodyParser.json());
 
+// app.all('/*', function(req, res, next){
+//   res.header("Access-Control-Allow-Origin", "*");
+//   res.header("Access-Control-Allow-Headers", "X-Requested-With");
+//   next();
+// })
+
+app.use(cors());
+
 const db = mongoose.connection;
 db.on('error', console.error);
 db.once('open', function(){