mongo-连接错误mongo-连接(会话)

mongo-connect error with mongo-connect(session)

四处搜索后,我在 code 中找不到关于此错误的任何解决方案或错误。我的节点 JS 应用程序中有我的 app.js 文件,其中包含 mongo-connect 声明:

const MongoStore = require('connect-mongo')(session)

我遇到了这个错误:

TypeError: Class constructor MongoStore cannot be invoked without 'new' at Object. (/Users/souhailmohamed/project/devops/story website/app.js:11:20) at Module._compile (internal/modules/cjs/loader.js:1063:30) at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10) at Module.load (internal/modules/cjs/loader.js:928:32) at Function.Module._load (internal/modules/cjs/loader.js:769:14) at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12) at internal/main/run_main_module.js:17:47

下面是我的 app.use 代码:

app.use(session({
    secret: 'story book',
    resave: false,
    saveUninitialized: false,
    store: new MongoStore({ mongooseConnection: mongoose.connection })
}))

我很了解

const MongoStore = require('connect-mongo')(session)

但是我没有理解错误。但它来自 traversy media LinK

的 youtube 教程

好的,所以我找到了解决它的方法,我不知道原因,在哪个版本的 express 上使用,但我在 mongo-connect 之后删除了(会话)并更改了app.use 到此 :

app.use(session({
    secret: 'story book',
    resave: false,
    saveUninitialized: false,
    store: MongoStore.create({ mongoUrl: 'mongodb+srv://<id+ password>@cluster0.cq7f2.mongodb.net/DBname?retryWrites=true&w=majority' })
}))

我也是这样,所以我发现了一个 npm pakage connect-mongodb-session。 安装它并使用与 Brad 在他的视频中使用的相同的会话代码

const MongoDBStore = require('connect-mongodb-session')(session);

//sessions
app.use(session({
    secret: 'keyboard cat',
    resave: false,
    saveUnitialized: false,
    store: new MongoDBStore({
        mongooseConnection: mongoose.connection
    })
    //cookie: { secure: true }
}))

const store = new MongoStore({
    uri: 'your mongo uri' ,
    collection:'mySessions'
})

//express middleware
app.use(session({
    secret: 'keyboard cat',
    resave: false,
    saveUninitialized: false,
    store: store

// Don't create a session until something is stored 
// cookie: { secure: true } - this wont work without https
}))

它也解决了我的重新登录问题。如果您关闭选项卡并租用本地主机,您已经登录

我在我的代码中遇到了同样的问题并使用这个解决了它:

const MongoDbStore = require('connect-mongo');

从 require 语句中删除 (session) 并像这样更新 app.use() :

// Session Config
app.use(
    session({
        secret: 'story book',
        resave: false,
        saveUninitialized: false,
        store: MongoDbStore.create({
            mongoUrl: YourDatabaseURL
        })
    })
);

解决方法如下:

const session = require('express-session');
const MongoStore = require('connect-mongo');
const mongoose = require('mongoose');
app.use(session({
    secret: 'story book',
    resave: false,
    saveUninitialized: false,
    store: new MongoStore({
      mongoUrl: mongoose.connection._connectionString,
      mongoOptions: {}
    })
}))

我有同样的问题。这是解决方案:

var session = require('express-session');
var MongoStore = require('connect-mongo');
var mongoose = require('mongoose');
mongoose.Promise = global.Promise;


app.use(session({
  secret : 'mysecretkey',
  resave : true,
  saveUninitialized : true,
  store :MongoStore.create({ mongoUrl: DBUrl })
}));

connect-mongo v4 引入了新签名(与 v3 相比)。

这里是官方migration guide.


此外,这里是我在特定项目(使用 mongoose and dotenv)中从 connect-mongo v3 升级到 v4 所做更改的快速差异:

“connect-mongo”文档here

中语法的某些规则已更改

const MongoStore = require("connect-mongo");

  secret: 'keyboard cat',
  resave: false,
  saveUninitialized: false,
  store: MongoStore.create({
    mongoUrl: process.env.MONGO_URI  //(URI FROM.env file)
  })
  //stroed it in database
}));
app.use(session({
  store: MongoStore.create({ mongoUrl: 'mongodb://localhost/test-app' })
}));

// Advanced usage
app.use(session({
  store: MongoStore.create({
    mongoUrl: 'mongodb://user12345:foobar@localhost/test-app?authSource=admin&w=1',
    mongoOptions: advancedOptions // See below for details
  })
}));

在您的 app.js 中进行以下更改:

let MongoStore = require('connect-mongo');

app.use(
    session({
        secret: 'keyboard cat',
        resave: false,
        saveUninitialized: false,
        store: MongoStore.create({
            mongoUrl: 'your mongo url'
        })
    });
);

参考文献:

只需使用另一个 npm 包 connect-mongodb-session 就可以了 https://www.npmjs.com/package/connect-mongodb-session

const MongoDBStore = require('connect-mongodb-session')(session);