nodejs连接mongodb的方法

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一、

var express = require('express');

var mongodb = require('mongodb');

var app = express();

app.use(express.static('./website'));

var url = 'mongodb://localhost:10089/test';

mongodb.MongoClient.connect(url, function (err, db) {

    if (err) {

        console.log(err);

        return false;

    }

    console.log(db);

});

app.listen(9000);

console.log('running');

二、

1、定义mongodb的连接串：

test_163:/home/exenode/part3/scms/config # more env/development.js

module.exports = {

        port:7101,

        mongodb:'mongodb://localhost:10089/scms'

}

2、导出此连接串的配置：

test_163:/home/exenode/part3/scms/config # more config.js

var config = null;

if (process && process.env && process.env.NODE_ENV){

        config = require("./env/"+ process.env.NODE_ENV + ".js");

}else{

        config = require("./env/development.js");

};

module.exports = config;

3、使用mongoose.connect("连接串") 方法连接mongodb

test_163:/home/exenode/part3/scms/config # more mongoose.js

var mongoose = require('mongoose');

var config = require('./config');

module.exports = function(){

        console.log("config:",config.mongodb);

        var db= mongoose.connect(config.mongodb);

        require('../app/models/news.server.model');

        return db;

}

4、在 app.js 中执行 mongoose.js 中导出的方法，连接mongodb：

test_163:/home/exenode/part3/scms # more app.js

var express = require('./config/express');

var mongodb = require('./config/mongoose');

var db = mongodb();

var app = express();

module.exports = app;