无效架构，应为“mongodb"或“mongodb+srv" [英] Invalid schema, expected `mongodb` or `mongodb+srv`

问题描述

有一个问题，一个项目简单的 node js 应用程序，添加和获取用户的数据并保存到 mongo(使用 3.. 版本)，一切正常(保存、获取等)，示例是

var express = require('express');var router = express.Router();var mongo = require('mongodb').MongoClient;var objectID = require('mongodb').ObjectID;var assert = require('assert');const url = 'mongodb://localhost:27017';const dbName = 'ldex';const tblOffers = 'offers';router.post('/insert', function (req, res, next) {无序顺序 = {类型:'卖'，………………最大:req.body.max，保护:req.body.protection，评论:req.body.comment，日期:新日期().toDateString()};mongo.connect(url, function (err, client) {assert.equal(null, err);const db = client.db(dbName);db.collection(tblOffers).insertOne(order, function (err, res) {assert.equal(null, err);console.log('报价已放置');客户端关闭()；})});res.redirect('/交换')});

但这里是另一个应用程序，解析器，它具有相同的 mongo 连接，它从其他网站添加一些数据(当不使用 mongo 一切正常时，我收到数据很好)，这是代码的一部分:

<预><代码>...让 assert = require('assert');让 mongo = require('mongodb').MongoClient;让路由器 = express.Router();const url = 'mongodb://localhost:27017/';const dbName = '陶瓷';const tblOffers = '物品';.../** 从特定组中获取项目*/函数 getGroupItems(网址，回调){请求({uri:url}，函数(错误，响应，正文){让列表 = [];让 $ = cheerio.load(body);$('#tovar').find('a.cat_item_disc_a').each(function(i, elem) {list[i] = 'https://plitkazavr.ru' + $(this).attr('href');});回调(列表)；});}/** 从特定链接解析一项*/函数 getItem(url) {请求({uri:url}，函数(错误，响应，正文){让列表 = {};让 $ = cheerio.load(body);$('#item_border').find('> #item_prop > ul').find('li.item_list').each(function(i, elem) {list[$(this).find('.item_cell').first().text()] = $(this).find('div.item_cell.item_val').text();});list.price = (parseFloat($('#item_price').text()));list.img = ('https://plitkazavr.ru' + $('#item_img').attr('src'));list.meta = ($('#item_wrap').find('meta[itemprop="description"]').attr("content"));mongo.connect(url, function (err, client) {assert.equal(null, err);const db = client.db(dbName);db.collection(tblOffers).insertOne(order, function (err, res) {assert.equal(null, err);console.log('报价已放置');客户端关闭()；})});});}router.get('/parse', function (req, res, next) {getGroupItems('https://plitkazavr.ru/Naxos/Clio', 函数(物品){items.forEach(function(item, i, arr) {设置超时(函数(){获取项目(项目)；}, 1000);});});res.end('ok');});

它的连接中断并给出

`错误:无效架构，应为`mongodb` 或`mongodb+srv

不明白问题出在哪里，请帮助...

解决方案

您的 MongoDB URL 似乎不完整，它应该包含您的 dbName，然后才能像这样传入 mongoose 连接

const url = 'mongodb://localhost:27017/';const fullUrl = url + dbName;//应该评估为这个 'mongodb://localhost:27017/ceramo'mongo.connect(fullUrl, function (err, client) {...}

have a problem, one project simple node js app with adding and getting data from user and saving into mongo (use 3.. ver), everything OK (saving, getting etc), example is

var express = require('express');
var router = express.Router();
var mongo = require('mongodb').MongoClient;
var objectID = require('mongodb').ObjectID;
var assert = require('assert');

const url = 'mongodb://localhost:27017';
const dbName = 'ldex';
const tblOffers = 'offers';

router.post('/insert', function (req, res, next) {
    var order = {
        type: 'Sell',
        ..............
        max: req.body.max,
        protection: req.body.protection,
        comment: req.body.comment,
        date: new Date().toDateString()
    };

    mongo.connect(url, function (err, client) {
        assert.equal(null, err);

        const db = client.db(dbName);

        db.collection(tblOffers).insertOne(order, function (err, res) {
            assert.equal(null, err);
            console.log('Offer placed');
            client.close();
        })
    });

    res.redirect('/exchange')
});

But here is another app, parser, that have the same mongo connection, it's adding some data in it from other web-site (when do not use mongo all ok, I recieve data well), here is the part of code:

...
let assert = require('assert');
let mongo = require('mongodb').MongoClient;
let router = express.Router();

const url = 'mongodb://localhost:27017/';
const dbName = 'ceramo';
const tblOffers = 'items';

...

/*
 *  Get items from specific group
 */

function getGroupItems(url, callback) {
    request({uri: url}, function (error, response, body) {
        let list = [];
        let $ = cheerio.load(body);
        $('#tovar').find('a.cat_item_disc_a').each(function(i, elem) {
            list[i] = 'https://plitkazavr.ru' + $(this).attr('href');
        });
        callback(list);
    });
}

/*
 *  Parse one item from specific link
 */

function getItem(url) {
    request({uri: url}, function (error, response, body) {
        let list = {};
        let $ = cheerio.load(body);
        $('#item_border').find('> #item_prop > ul').find('li.item_list').each(function(i, elem) {
            list[$(this).find('.item_cell').first().text()] = $(this).find('div.item_cell.item_val').text();
        });
        list.price = (parseFloat($('#item_price').text()));
        list.img = ('https://plitkazavr.ru' + $('#item_img').attr('src'));
        list.meta = ($('#item_wrap').find('meta[itemprop="description"]').attr("content"));

        mongo.connect(url, function (err, client) {
            assert.equal(null, err);

            const db = client.db(dbName);

            db.collection(tblOffers).insertOne(order, function (err, res) {
                assert.equal(null, err);
                console.log('Offer placed');
                client.close();
            })
        });

    });
}

router.get('/parse', function (req, res, next) {

    getGroupItems('https://plitkazavr.ru/Naxos/Clio', function (items) {
        items.forEach(function(item, i, arr) {
            setTimeout(function() {
                getItem(item);
            }, 1000);
        });
    });

    res.end('ok');
});

And it's down on connection and gives the

`Error: Invalid schema, expected `mongodb` or `mongodb+srv

Don't understand where is a problem, help please...

解决方案

Your MongoDB URL seems incomplete, it should include your dbName before it's passed into the mongoose connection like this

const url = 'mongodb://localhost:27017/';
const fullUrl = url + dbName; // which should evaluate to this 'mongodb://localhost:27017/ceramo'


mongo.connect(fullUrl, function (err, client) {...}

这篇关于无效架构，应为“mongodb"或“mongodb+srv"的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！