[英]Alternatives for connecting MongoDB Atlas to Heroku Node.js app
[英]Heroku angular node.js app not connecting to mlab mongodb database
我的Heroku应用程序启动并运行正常,直到尝试执行与其数据库进行交互的任何操作为止,此时我都收到“ 503服务不可用”错误。
我已经在我的资源选项卡中安装了mLab附加组件,并在我的设置选项卡的config vars部分中添加了正确的MONGODB_URI连接字符串,尽管我不确定执行这两个操作是否多余。
当我使用localhost启动应用程序时,它运行良好,尽管我注意到它仍在使用本地数据库而不是mLab数据库。
这是我的server.js文件:
var express = require('express');
var app = express();
var bodyParser = require('body-parser');
app.set('port', (process.env.PORT || 5000));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended : true}))
var path = require('path');
app.use(express.static(path.join(__dirname, './dist/public/')));
app.get('*', function(req,res){
res.sendFile(path.join(__dirname, 'dist'));
});
require('./server/config/mongoose.js');
var mongodb = require('mongodb');
var MongoClient = mongodb.MongoClient;
var url = process.env.MONGOLAB_URI;
MongoClient.connect(url, function (err, db) {
if (err) {
console.log('Unable to connect to the mongoDB server. Error:', err);
} else {
console.log('Connection established to', url);
};
var routes_setter = require('./server/config/routes.js');
routes_setter(app);
app.listen(app.get('port'), function(){
console.log('Node app is running on port', app.get('port'))
});
})
这是我的package.json:
{
"name": "public",
"version": "0.0.0",
"main": "server.js",
"scripts": {
"nodemon": "nodemon server.js",
"ng": "ng",
"start": "node server.js",
"build": "ng build",
"test": "ng test",
"lint": "ng lint",
"e2e": "ng e2e",
"postinstall": "ng build --aot -prod"
},
"repository": {
"type": "git",
"url": "https://github.com/ActionPackedJack/Restaurant-Schedule"
},
"engines": {
"node": "11.2.0",
"npm": "6.4.1"
},
"dependencies": {
"@angular/animations": "^6.0.3",
"@angular/cli": "~6.0.8",
"@angular/common": "^6.0.3",
"@angular/compiler": "^6.0.3",
"@angular/compiler-cli": "^6.0.3",
"@angular/core": "^6.0.3",
"@angular/forms": "^6.0.3",
"@angular/http": "^6.0.3",
"@angular/platform-browser": "^6.0.3",
"@angular/platform-browser-dynamic": "^6.0.3",
"@angular/router": "^6.0.3",
"body-parser": "^1.18.3",
"core-js": "^2.5.4",
"express": "^4.16.4",
"mongodb": "^3.1.10",
"mongoose": "^5.3.12",
"nodemon": "^1.18.6",
"rxjs": "^6.0.0",
"rxjs-compat": "^6.3.3",
"typescript": "~2.7.2",
"zone.js": "^0.8.26"
},
"devDependencies": {
"@angular/cli": "~6.0.8",
"@angular/compiler-cli": "^6.0.3",
"@angular-devkit/build-angular": "~0.6.8",
"@angular/language-service": "^6.0.3",
"@types/jasmine": "~2.8.6",
"@types/jasminewd2": "~2.0.3",
"@types/node": "~8.9.4",
"codelyzer": "~4.2.1",
"typescript": "~2.7.2",
"jasmine-core": "~2.99.1",
"jasmine-spec-reporter": "~4.2.1",
"karma": "~1.7.1",
"karma-chrome-launcher": "~2.2.0",
"karma-coverage-istanbul-reporter": "~2.0.0",
"karma-jasmine": "~1.1.1",
"karma-jasmine-html-reporter": "^0.2.2",
"protractor": "~5.3.0",
"ts-node": "~5.0.1",
"tslint": "~5.9.1"
}
}
任何建议将不胜感激。 非常感谢!
将Mlab上的IP地址列入白名单
前往丛集
点击标签安全性
前往IP白名单
点击编辑
现在,您可以通过单击设置中的“允许从任何地方访问”或通过提供白名单IP来将所有IP列入白名单: 0.0.0.0/0
它会解决问题
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