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Node.js Connection Sample
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最終更新日:2024-01-15 14:49:56
Node.js Connection Sample
最終更新日: 2024-01-15 14:49:56
PDFファイルをダウンロード

Notes

TencentDB for MongoDB provides two usernames rwuser and mongouser by default to support the MONGODB-CR and SCRAM-SHA-1 authentication methods, respectively. The connecting URIs for the two authentication methods are formed differently. For more information, please see Connection Sample.

Quick Start

Native Node.js sample code

Install the driver package through shell:
npm install mongodb --save
(If the installation failed, you can try another source, such as `npm config set registry http://registry.cnpmjs.org`)
npm init
Program code:
'use strict';

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

// Form the URI
var url = 'mongodb://mongouser:thepasswordA1@10.66.161.177:27017/admin';

mongoClient.connect(url, function(err, db) {
    assert.equal(null, err);
    var db = db.db('testdb'); // Select a database
    var col = db.collection('demoCol'); // Select a collection (table)
   // Insert data
    col.insertOne(
        {
            a: 1,
            something: "yy"
        },
        // Optional parameters
        //{
        //    w: 'majority' // Enable the "Majority" mode to ensure that data are written to the Secondary nodes
        //},
        function(err, r) {
            console.info("err:", err);
            assert.equal(null, err);
            // Assertion is written successfully
            assert.equal(1, r.insertedCount);
            // Query data
            col.find().toArray(function(err, docs) {
                assert.equal(null, err);
                console.info("docs:", docs);
                db.close();
            });
        }
    );
});
Output:
[root@VM_2_167_centos node]# node index.js
docs: [ { _id: 567a1bf26773935b3ff0b42a, a: 1, something: 'yy' } ]

Sample Code for Connecting to Node.js mongoose

var dbUri = "mongodb://" + user + ":" + password + "@" + host + ":" + port + "/" + dbName;
var opts = {
    auth: {
        authMechanism: 'MONGODB-CR', // This parameter is not required if SCRAM-SHA-1 authentication is used
        authSource: 'admin'
    }
};
var connection = mongoose.createConnection(dbUri, opts);
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