javascript 猫鼬连接nodejs

Posted 2021-05-03

const mongoose = require('mongoose');

function getConnection() {
    const dbUri = process.env.mongoDB_HOST;
    mongoose.connect(dbUri, {
        useNewUrlParser: true
    });
    // CONNECTION EVENTS

    // When successfully connected
    mongoose.connection.on('connected', function () {
        console.log('Mongoose default connection open to ' + dbUri);
    });

    // If the connection throws an error
    mongoose.connection.on('error', function (err) {
        console.log('Mongoose default connection error: ' + err);
    });
    // When the connection is disconnected
    mongoose.connection.on('disconnected', function () {
        console.log('Mongoose default connection disconnected');
    });

    // If the Node process ends, close the Mongoose connection 
    process.on('SIGINT', function () {
        mongoose.connection.close(function () {
            console.log('Mongoose default connection disconnected through app termination');
            process.exit(0);
        });
    });
}
module.exports = {
    getConnection
};