無法使用node.js和Heroku連接MongoLab數據庫URl

我無法連接到MongoLAB中存在的MongoDB。我有一個MEAN應用程序，我已經部署在heroku中。當我嘗試連接數據庫但不能。日誌如下。無法使用node.js和Heroku連接MongoLab數據庫URl

Disconnected from log stream. There may be events happening that you do not see here! Attempting to reconnect... 

2017-07-31T11:46:48.243603+00:00 app[web.1]:  at module.exports (/app/node_modules/mongodb/lib/url_parser.js:59:13) 

2017-07-31T11:46:48.243605+00:00 app[web.1]:  at Function.MongoClient.connect (/app/node_modules/mongodb/lib/mongo_client.js:113:3) 

2017-07-31T11:46:48.243604+00:00 app[web.1]:  at connect (/app/node_modules/mongodb/lib/mongo_client.js:289:16) 

2017-07-31T11:46:48.243606+00:00 app[web.1]:  at run (/app/node_modules/thunky/index.js:13:3) 

2017-07-31T11:46:48.243606+00:00 app[web.1]:  at /app/node_modules/mongojs/lib/database.js:29:15 

2017-07-31T11:46:48.243607+00:00 app[web.1]:  at Collection._getConnection (/app/node_modules/thunky/index.js:27:3) 

2017-07-31T11:46:48.243608+00:00 app[web.1]:  at Collection._getCollection (/app/node_modules/mongojs/lib/collection.js:17:10) 

2017-07-31T11:46:48.243609+00:00 app[web.1]:  at getCursor (/app/node_modules/mongojs/lib/collection.js:32:10) 

2017-07-31T11:46:48.243610+00:00 app[web.1]:  at run (/app/node_modules/thunky/index.js:13:3) 

2017-07-31T11:46:48.243609+00:00 app[web.1]:  at /app/node_modules/mongojs/lib/cursor.js:12:5 

2017-07-31T11:46:48.244240+00:00 app[web.1]: [0mPOST /login [31m500 [0m30.134 ms - 22[0m 

Disconnected from log stream. There may be events happening that you do not see here! Attempting to reconnect...

我在下面解釋我的代碼。

var mongoJs=require('mongojs'); 
var CryptoJS = require("crypto-js"); 
var database='FGDP'; 
var collections=['f_users']; 
var MONGOLAB_URI="mongodb://username:[email protected]:27153/fgdp"; 
var db=mongoJs(MONGOLAB_URI, collections); 
var ses; 
exports.userlogin=function(req,res){ 
    var username=req.body.user_name; 
    var password=req.body.user_pass; 
    // console.log('pass'+typeof(password)); 
    //var ciphertext = CryptoJS.AES.encrypt(password, 'lexelPass'); 
    //var pass=ciphertext.toString(); 
    db.f_users.findOne({'login_name':username},function(err,docs){ 
     console.log('err',err); 
     if(!err){ 
      if(docs){ 
       var pass=docs.password; 
       var bytes = CryptoJS.AES.decrypt(pass.toString(), 'lexelPass'); 
       var plaintext = bytes.toString(CryptoJS.enc.Utf8); 
       if(plaintext==password){ 
        req.session.email=docs.email; 
        req.session.name=docs.name; 
        req.session.login_name=docs.login_name; 
        req.session.status=docs.status; 
        req.session.user_type=docs.user_type; 
        res.send(docs); 
       }else{ 
        res.send("Login failed"); 
       } 
      } 
     } 
     if(err){ 
      res.send("Login failed"); 
     } 
    }) 
}

該數據庫和集合存在於mongoLAB中。我需要通過mongojs來連接它。實際上我有一個登錄應用程序，我無法登錄。

來源

2017-07-31 satya

你應該做的像

var db = mongoJs(MONGOLAB_URI); 
db.on('connect', function() { 
    console.log('database connected') 
});

來源

2017-07-31 13:06:03

那麼如何連接集合。 – satya

db.f_users.find（function（err，docs）{ \t // docs }） –

好吧讓我來測試並讓你知道。 – satya

無法使用node.js和Heroku連接MongoLab數據庫URl

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