Question

我有3个节点服务器名为：

dishServer.js

var mongoose = require('mongoose'),
    assert = require('assert');    
var Dishes = require('./models/dishes');    
// Connection URL
var url = 'mongodb://localhost:27017/conFusion';mongoose.connect(url);
var db = mongoose.connection;
db.on('error', console.error.bind(console, 'connection error:'));
db.once('open', function () {
    // we're connected!
    console.log("Connected correctly to server");    
    // create a new dish
    Dishes.create({
      "name": "Uthapizza",

      "description": "A unique . . .",
      "comments": [
        {
          "rating": 5,
          "comment": "Imagine all the eatables, living in conFusion!",
          "author": "John Lemon"
        },

      ]
}, function (err, dish) {
        if (err) throw err;
        console.log('Dish created!');
        console.log(dish);    
        var id = dish._id;    
        // get all the dishes
        setTimeout(function () {
            Dishes.findByIdAndUpdate(id, {
                    $set: {
                        description: 'Updated Test'
                    }
                }, {
                    new: true
                })
                .exec(function (err, dish) {
                    if (err) throw err;
                    console.log('Updated Dish!');
                    console.log(dish);    
                    dish.comments.push({
                        rating: 5,
                        comment: 'I\'m getting a sinking feeling!',
                        author: 'Leonardo di Carpaccio'
                    });

                    dish.save(function (err, dish) {
                        console.log('Updated Comments!');
                        console.log(dish);

                        db.collection('dishes').drop(function () {
                            db.close();
                        });
                    });
                });
        }, 3000);
    });
});

leaderServer.js

var mongoose = require('mongoose'),
    assert = require('assert');

var Leaders = require('./models/leadership');

// Connection URL
var url = 'mongodb://localhost:27017/conFusion';mongoose.connect(url);
var db = mongoose.connection;
db.on('error', console.error.bind(console, 'connection error:'));
db.once('open', function () {
    // we're connected!
    console.log("Connected correctly to server");

    // create a new leader
    Leaders.create({
      "name": "Peter Pan",

      "description": "Our CEO, Peter, . . ."
}, function (err, leader) {
        if (err) throw err;
        console.log('Leaders created!');
        console.log(leader);

        var id = leader._id;

        // get all promotion dishes
        setTimeout(function () {
            Leaders.findByIdAndUpdate(id, {
                    $set: {
                        description: 'Updated Test'
                    }
                }, {
                    new: true
                })
                .exec(function (err, leader) {
                    if (err) throw err;
                    console.log('Updated Leader!');
                    console.log(leader);


                    db.collection('leaders').drop(function () {
                            db.close();
                        });
                });
        }, 3000);
    });
});

promoServer.js

var mongoose = require('mongoose'),
    assert = require('assert');

var Promotions = require('./models/promotions');

// Connection URL
var url = 'mongodb://localhost:27017/conFusion';mongoose.connect(url);
var db = mongoose.connection;
db.on('error', console.error.bind(console, 'connection error:'));
db.once('open', function () {
    // we're connected!
    console.log("Connected correctly to server");

    // create a new promotion
    Promotions.create({
      "name": "Weekend Grand Buffet",

      "description": "Featuring . . ."
}, function (err, promotion) {
        if (err) throw err;
        console.log('Promotions created!');
        console.log(promotion);    
        var id = promotion._id;    
        // get all promotion dishes
        setTimeout(function () {
            Promotions.findByIdAndUpdate(id, {
                    $set: {
                        description: 'Updated Test'
                    }
                }, {
                    new: true
                })
                .exec(function (err, promotion) {
                    if (err) throw err;
                    console.log('Updated Promotion!');
                    console.log(promotion);


                    db.collection('promotions').drop(function () {
                            db.close();
                        });
                });
        }, 3000);
    });
});

有没有办法将它们组合成一个引用这三个服务器的节点服务器？我找到了通过引用三种模型来制作节点服务器的方法：菜肴，领导力，促销。但不能将这三个服务器合二为一。

帮助将不胜感激。

Answer 1

您只想针对单个数据库执行数据库操作，每个数据库都涉及不同集合的逻辑。您可以连接到Mongo并使用任何代码工作流程控制依赖项，例如async或练习，例如使用Promise来执行您想要的操作。

它不是服务器您需要的东西，而是一次性执行不同的操作。我的意思是，它并不像你设置一个Web服务器来为远程数据库提供API，从你的代码来看，它们似乎是特定的db＆＃34;操作＆＃34;你正在表演。

将3节点服务器组合到1个节点服务器中

1 个答案: