Javascript 如何使用 node.js 连接到 mongodb（并进行身份验证）？

How do I connect to mongodb with node.js (and authenticate)?

提问by Mark

How do I connect to mongodb with node.js?

如何使用 node.js 连接到 mongodb？

I have the node-mongodb-native driver.

我有 node-mongodb-native 驱动程序。

There's apparently 0 documentation.

显然有 0 个文档。

Is it something like this?

它是这样的吗？

var mongo = require('mongodb/lib/mongodb'); 
var Db= new mongo.Db( dbname, new mongo.Server( 'mongolab.com', 27017, {}), {}); 

Where do I put the username and the password?

我把用户名和密码放在哪里？

Also how do I insert something?

另外我如何插入一些东西？

Thanks.

谢谢。

采纳答案by Chris Heald

Per the source:

根据来源：

After connecting:

连接后：

Db.authenticate(user, password, function(err, res) {
  // callback
});

回答by mattdlockyer

Everyone should use this source link:

每个人都应该使用这个源链接：

http://mongodb.github.com/node-mongodb-native/contents.html

http://mongodb.github.com/node-mongodb-native/contents.html

Answer to the question:

回答问题：

var Db = require('mongodb').Db,
    MongoClient = require('mongodb').MongoClient,
    Server = require('mongodb').Server,
    ReplSetServers = require('mongodb').ReplSetServers,
    ObjectID = require('mongodb').ObjectID,
    Binary = require('mongodb').Binary,
    GridStore = require('mongodb').GridStore,
    Code = require('mongodb').Code,
    BSON = require('mongodb').pure().BSON,
    assert = require('assert');

var db = new Db('integration_tests', new Server("127.0.0.1", 27017,
 {auto_reconnect: false, poolSize: 4}), {w:0, native_parser: false});

// Establish connection to db
db.open(function(err, db) {
  assert.equal(null, err);

  // Add a user to the database
  db.addUser('user', 'name', function(err, result) {
    assert.equal(null, err);

    // Authenticate
    db.authenticate('user', 'name', function(err, result) {
      assert.equal(true, result);

      db.close();
    });
  });
});

回答by Viral Patel

var mongo = require('mongodb');
var MongoClient = mongo.MongoClient;    
MongoClient.connect('mongodb://'+DATABASEUSERNAME+':'+DATABASEPASSWORD+'@'+DATABASEHOST+':'DATABASEPORT+'/'+DATABASENAME,function(err, db){  
      if(err) 
        console.log(err);
      else
      {
        console.log('Mongo Conn....');

      }
    });
//for local server 
//in local server DBPASSWOAD and DBusername not required
MongoClient.connect('mongodb://'+DATABASEHOST+':'+DATABASEPORT+'/'+DATABASENAME,function(err, db){  
      if(err) 
        console.log(err);
      else
      {
        console.log('Mongo Conn....');

      }
    });

回答by justinhj

I find using a Mongo url handy. I store the URL in an environment variable and use that to configure servers whilst the development version uses a default url with no password.

我发现使用 Mongo url 很方便。我将 URL 存储在环境变量中并使用它来配置服务器，而开发版本使用没有密码的默认 URL。

The URL has the form:

URL 具有以下形式：

export MONGODB_DATABASE_URL=mongodb://USERNAME:PASSWORD@DBHOST:DBPORT/DBNAME

Code to connect this way:

以这种方式连接的代码：

var DATABASE_URL = process.env.MONGODB_DATABASE_URL || mongodb.DEFAULT_URL;

mongo_connect(DATABASE_URL, mongodb_server_options, 
      function(err, db) { 

          if(db && !err) {
          console.log("connected to mongodb" + " " + lobby_db);
          }
          else if(err) {
          console.log("NOT connected to mongodb " + err + " " + lobby_db);
          }
      });    

回答by V. Kovpak

My version:

我的版本：

var MongoClient = require('mongodb').MongoClient;
MongoClient.connect('mongodb://user:pass@dhost:port/baseName', function(err, db) {
    if (err) {
        console.error(err);
    }
    var collection = db.collection('collectionName');
    collection.find().toArray(function(err, docs) {
        console.log(docs);
    });
});

回答by u443966

I recommend mongoskinI just created.

我推荐我刚刚创建的mongoskin。

var mongo = require('mongoskin');
var db = mongo.db('admin:pass@localhost/mydb?auto_reconnnect');
db.collection('mycollection').find().toArray(function(err, items){
   // do something with items
});

Is mongoskin sync? Nop, it is async.

mongoskin 是同步的吗？不，它是异步的。

回答by jwchang

This worked for me:

这对我有用：

Db.admin().authenticate(user, password, function() {} );

回答by Alexey Petrushin

You can do it like this

你可以这样做

var db = require('mongo-lite').connect('mongodb://localhost/test')

more details ...

更多细节 ...

回答by jolly

Here is new may to authenticate from "admin" and then switch to your desired DB for further operations:

这是从“admin”进行身份验证然后切换到您想要的数据库以进行进一步操作的新功能：

   var MongoClient = require('mongodb').MongoClient;
var Db = require('mongodb').Db, Server = require('mongodb').Server ,
    assert = require('assert');

var user = 'user';
var password = 'password';

MongoClient.connect('mongodb://'+user+':'+password+'@localhost:27017/opsdb',{native_parser:true, authSource:'admin'}, function(err,db){
    if(err){
        console.log("Auth Failed");
        return;
    }
    console.log("Connected");
    db.collection("cols").find({loc:{ $eq: null } }, function(err, docs) {
        docs.each(function(err, doc) {
          if(doc) {
            console.log(doc['_id']);
          }
        });
    });

    db.close();

}); 

回答by RVC

With the link provided by @mattdlockyer as reference, this worked for me:

使用@mattdlockyer 提供的链接作为参考，这对我有用：

var mongo = require('mongodb');
var server = new mongo.Server(host, port, options);
db = new mongo.Db(mydb, server, {fsync:true});
db.open(function(err, db) {
    if(!err) {
        console.log("Connected to database");
        db.authenticate(user, password, function(err, res) {
            if(!err) {
                console.log("Authenticated");
            } else {
                console.log("Error in authentication.");
                console.log(err);
            }
        });
    } else {
        console.log("Error in open().");
        console.log(err);
    };
});

exports.testMongo = function(req, res){
    db.collection( mycollection, function(err, collection) {
        collection.find().toArray(function(err, items) {
            res.send(items);
        });
    });
};