javascript - MongooseServerSelectionError: 连接 ECONNREFUSED::1:27017

Question

当我尝试使用 Mongoose 将我的应用程序与我的数据库连接时遇到问题。已经尝试了我在谷歌上找到的以下解决方案:

windows下重启MongoDB服务

使用位于 mongodb 的 bin 文件中的 cmd 手动打开数据库

但我无法解决。谁能帮我 ？

//my connection
const mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/notes-db-app',{
    useNewUrlParser: true, 
    useUnifiedTopology: true
})
.then(db => console.log('DB is connected'))
.catch(err => console.log(err));

扔给我，这个错误

MongooseServerSelectionError: connect ECONNREFUSED ::1:27017at NativeConnection.Connection.openUri (C:\Users\ivan\Desktop\NodeJS\notes-app\node_modules\mongoose\lib\connection.js:797:32)at C:\Users\ivan\Desktop\NodeJS\notes-app\node_modules\mongoose\lib\index.js:330:10 at C:\Users\ivan\Desktop\NodeJS\notes-app\node_modules\mongoose\lib\helpers\promiseOrCallback.js:32:5at new Promise ()at promiseOrCallback (C:\Users\ivan\Desktop\NodeJS\notes-app\node_modules\mongoose\lib\helpers\promiseOrCallback.js:31:10)at Mongoose._promiseOrCallback (C:\Users\ivan\Desktop\NodeJS\notes-app\node_modules\mongoose\lib\index.js:1151:10)at Mongoose.connect (C:\Users\ivan\Desktop\NodeJS\notes-app\node_modules\mongoose\lib\index.js:329:20)at Object. (C:\Users\ivan\Desktop\NodeJS\notes-app\src\db.js:3:10)
at Module._compile (node:internal/modules/cjs/loader:1095:14)at Object.Module._extensions..js (node:internal/modules/cjs/loader:1147:10) {
reason: TopologyDescription {type: 'Unknown',servers: Map(1) { 'localhost:27017' => [ServerDescription] },stale: false,compatible: true,heartbeatFrequencyMS: 10000,localThresholdMS: 15,logicalSessionTimeoutMinutes: undefined}}

我尝试像这样将端口放在我的连接代码上

//my connection
const mongoose = require('mongoose');
mongoose.connect('mongodb://localhost:27017/notes-db-app',{
    useNewUrlParser: true, 
    useUnifiedTopology: true
})
.then(db => console.log('DB is connected'))
.catch(err => console.log(err));

它给我带来了另一个错误

MongooseServerSelectionError: Invalid message size: 1347703880, max allowed: 67108864at NativeConnection.Connection.openUri (C:\Users\ivan\Desktop\NodeJS\notes-app\node_modules\mongoose\lib\connection.js:797:32)at C:\Users\ivan\Desktop\NodeJS\notes-app\node_modules\mongoose\lib\index.js:330:10 at C:\Users\ivan\Desktop\NodeJS\notes-app\node_modules\mongoose\lib\helpers\promiseOrCallback.js:32:5at new Promise ()at promiseOrCallback (C:\Users\ivan\Desktop\NodeJS\notes-app\node_modules\mongoose\lib\helpers\promiseOrCallback.js:31:10)at Mongoose._promiseOrCallback (C:\Users\ivan\Desktop\NodeJS\notes-app\node_modules\mongoose\lib\index.js:1151:10)at Mongoose.connect (C:\Users\ivan\Desktop\NodeJS\notes-app\node_modules\mongoose\lib\index.js:329:20)at Object. (C:\Users\ivan\Desktop\NodeJS\notes-app\src\db.js:3:10)
at Module._compile (node:internal/modules/cjs/loader:1095:14)at Object.Module._extensions..js (node:internal/modules/cjs/loader:1147:10) {
reason: TopologyDescription {type: 'Unknown',servers: Map(1) { 'localhost:3000' => [ServerDescription] },stale: false,compatible: true,heartbeatFrequencyMS: 10000,localThresholdMS: 15,logicalSessionTimeoutMinutes: undefined}}

Answer 1

const uri = 'mongodb://localhost:27017/test';

const options = {
    useNewUrlParser: true,
    useUnifiedTopology: true,
    serverSelectionTimeoutMS: 5000,
    autoIndex: false, // Don't build indexes
    maxPoolSize: 10, // Maintain up to 10 socket connections
    serverSelectionTimeoutMS: 5000, // Keep trying to send operations for 5 seconds
    socketTimeoutMS: 45000, // Close sockets after 45 seconds of inactivity
    family: 4 // Use IPv4, skip trying IPv6
}

const connectWithDB = () => {
    mongoose.connect(uri, options, (err, db) => {
      if (err) console.error(err);
      else console.log("database connection")
    })
}

connectWithDB()