const { MongoClient } = require("mongodb"); // Replace the uri string with your connection string. const uri = "<connection string uri>"; const client = new MongoClient(uri); async function run() { try { const database = client.db('sample_mflix'); const movies = database.collectio...
const connectDB = async () => { const url = 'mongodb://localhost:27017';const dbName = 'mydb';const client = new MongoClient(url, { useUnifiedTopology: true });try { await client.connect();console.log('Connected to MongoDB database');const db = client.db(dbName);// 创建集合 a...
MongoClient.connect(url,function(err,client){if(err){console.error('Failed to connect to MongoDB:',err);return;}console.log('Connected to MongoDB successfully!');// 在这里进行数据库操作}); 在上面的代码中,我们使用MongoClient.connect方法来连接到 MongoDB。如果连接成功,将会打印出相应的消息。 ...
MongoClient.connect(url,{ useNewUrlParser: true },function(err,client){ //client参数就是连接成功之后的mongoclient(个人理解为数据库客户端) //assert.equla(null.err); console.log("数据库连接成功"); //mongodb数据看3.x新写法 var dbo = client.db("test"); //插入语句 //插入单条语句 dbo....
node-js-mongodb-connection.js // 运行MongoDB服务的URLvarurl ="mongodb://localhost:27017";// MongoDB的客户varMongoClient =require('mongodb').MongoClient;// 连接到MongoDB服务MongoClient.connect(url,function(err, db){if(err)throwerr;console.log("Connected to MongoDB!"); db.close(); })...
// 连接到 MongoDB 服务器 await client.connect(); console.log("Connected successfully to server"); }finally{ // 确保在完成后关闭连接 await client.close(); } } main().catch(console.error); 执行以上代码,输出结果为: Connectedsuccessfully to server ...
{ // 连接到 MongoDB 服务器 await client.connect(); console.log("成功连接到服务器"); // 指定数据库 const database = client.db('runoob'); // 使用createCollection 方法创建集合 const collectionName = 'exampleCollection'; await database.createCollection(collectionName); console.log(`集合 ${...
MongoClient.connect('mongodb://127.0.0.1:27017/test', function (err, db) { if (err) { throw err; } else { console.log("successfully connected to the database"); } db.close(); }); Execute the app.js file by typing the following command: ...
1const uri = "mongodb://localhost:27017"; 1. 3.3 连接到数据库 使用MongoClient.connect方法连接到MongoDB: 1async function connectToDatabase() { 2 const client = new MongoClient(uri, { useNewUrlParser: true, useUnifiedTopology: true }); ...
sudo systemctl status mongod //检查mongodb服务状态 //输出：× mongod.service - MongoDB Data...