关于mongoose连接mongodb重复访问报错的解决办法

var express = require( 'express' );

var mongoose = require( 'mongoose' );

var router = express.Router();

var Person = mongoose.model( 'Person' ,{

  id:Number,

  name :String

});

/*新增*/

router.get( '/insert' , function (req, res){

  var student = new Person({

   id:1,

   name : "huop"

  });

  mongoose. connect ( "mongodb://localhost:27017/test" );

  student.save( function (e, product, numberAffected) {

   if (e) res.send(e.message);

   var html = "

新增的数据为：" + JSON.stringify(product);

   html += "

影响的数据量为：" + numberAffected;

   res.send(html);

  });

});

router.get( '/find' , function (request, response){

  mongoose. connect ( "mongodb://localhost:27017/test" );

  Person.find({

   id: 1

  }, function (e, docs) {

   if (e) response.send(e.message);

   var html = "

  查询到的数据为：" + JSON.stringify(docs);

   response.send(html);

  });

});

var mongoose = require(‘mongoose ');

mongoose.connect(‘mongodb://localhost/nuaidibi' );

module.exports = mongoose;