Question

我在运行我的meanjs项目时得到了Unhandled rejection MongoError: cannot connect to server。

以前运行正常，但在更新nodejs 5.11.1，mongodb 3.2.6，"mongoose": "^4.4.16"和"connect-mongo": "^1.1.0",时会出现此错误。

未处理拒绝MongoError：无法连接到服务器在Collection.listIndexes（/home/shaishab/Project/Open-Source/BS-Commerce/node_modules/mongodb/lib/collection.js:1750:11）在indexInformation（/home/shaishab/Project/Open-Source/BS-Commerce/node_modules/mongodb/lib/db.js:1625:25）在Db.indexInformation（/home/shaishab/Project/Open-Source/BS-Commerce/node_modules/mongodb/lib/db.js:1589:44）在ensureIndex（/home/shaishab/Project/Open-Source/BS-Commerce/node_modules/mongodb/lib/db.js:1082:8）在Db.ensureIndex（/home/shaishab/Project/Open-Source/BS-Commerce/node_modules/mongodb/lib/db.js:1058:44）在ensureIndex（/home/shaishab/Project/Open-Source/BS-Commerce/node_modules/mongodb/lib/collection.js:1820:13）在Collection.ensureIndex（/home/shaishab/Project/Open-Source/BS-Commerce/node_modules/mongodb/lib/collection.js:1808:44）在MongoStore.setAutoRemoveAsync（/home/shaishab/Project/Open-Source/BS-Commerce/node_modules/connect-mongo/src/index.js:123:40）在MongoStore.handleNewConnectionAsync（/home/shaishab/Project/Open-Source/BS-Commerce/node_modules/connect-mongo/src/index.js:116:18）在MongoStore（/home/shaishab/Project/Open-Source/BS-Commerce/node_modules/connect-mongo/src/index.js:95:26）在module.exports（/home/shaishab/Project/Open-Source/BS-Commerce/config/express.js:101:10）在对象。（/home/shaishab/Project/Open-Source/BS-Commerce/server.js:31:38）在Module._compile（module.js：413：34）在Object.Module._extensions..js（module.js：422：10）

配置文件代码中的

var session = require('express-session'),
    MongoStore = require('connect-mongo')(session),
    mongoose = require('mongoose');

var db = mongoose.connect('dbUrl');
app.use(session({
        saveUninitialized: true,
        resave: true,
        secret: config.sessionSecret,
        store: new MongoStore({
            db: db.connection.db,
            collection: config.sessionCollection
        })
}));

任何人都可以帮助我吗？

Answer 1

最后我发现错误发生了!! 我发布这个答案因为它可能会帮助别人。

更新mongoose和connect-mongo版本时出现问题。

需要更新：

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

和

app.use(session({
        saveUninitialized: true,
        resave: true,
        secret: config.sessionSecret,
        store: new MongoStore({
            mongooseConnection: db.connection,
            collection: config.sessionCollection
        })
    }));

主要问题出在MongoStore({db: db.connection.db而非使用

db: db.connection.db

现在使用

mongooseConnection: db.connection

解决了我的问题：）

Answer 2

由于我没有db variable，我的解决方案是：

var mongoStore = require('connect-mongo')(session);
var mongoose = require('mongoose');

const connection = mongoose.createConnection('mongodb://localhost/chester');

app.use(session({
    secret: config.secrets.session,
    resave: true,
    saveUninitialized: true,
    store: new mongoStore({mongooseConnection: connection})
  }));

希望有所帮助

未处理的拒绝MongoError：无法连接到MongoDB中的服务器

2 个答案: