MongooseServerSelectionError：连接 ECONNREFUSED ::1:27017

Question

当我尝试使用 Mongoose 将我的应用程序与数据库连接时遇到问题。已经尝试过以下我在谷歌上找到的解决方案：

• 在 Windows 上重新启动 MongoDB 服务
• 使用位于 mongodb 的 bin 文件上的 cmd 手动打开 db

但我解决不了。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));

并抛出了我，这个错误

MongooseServerSelectionError: connect ECONNREFUSED ::1:27017
    at 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:32:5
    at new Promise (<anonymous>)
    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.<anonymous> (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
  }
}

我尝试将端口放在我的连接代码上，如下所示

MongooseServerSelectionError: connect ECONNREFUSED ::1:27017
    at 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:32:5
    at new Promise (<anonymous>)
    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.<anonymous> (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
  }
}

它又给我带来了另一个错误

MongooseServerSelectionError: Invalid message size: 1347703880, max allowed: 67108864
    at 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:32:5
    at new Promise (<anonymous>)
    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.<anonymous> (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

如果错误指出：

连接（）错误：MongooseServerSelectionError：连接ECONNREFUSED ::1：27017

然后， IPv6 地址::1上与localhost的连接被拒绝。Mongoose 默认使用 IPv6 ..

为了快速检查，您可以显式设置 IPv4 地址：

mongoose.connect('mongodb://127.0.0.1/test')

Answer 2

只需传递第三个参数即可family:4。

mongoose.connect('mongodb://localhost/notes-db-app',{
    useNewUrlParser: true, 
    useUnifiedTopology: true,
    family: 4,
})

Answer 3

我终于解决了。

启用 MongoDB 默认禁用的 IPV6。在 CMD 上使用以下命令行：

mongod --ipv6 

然后再次尝试连接，就可以了！

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));

_{代表提问者发表}

Answer 4

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()

Answer 5

可能您要连接的服务器的主机名/IP 设置不正确。
我习惯于将该错误视为：

MongooseServerSelectionError: connect ECONNREFUSED <hostname/hostIP>:<port>

在您发布的控制台日志中，<hostname/hostIP>部分格式错误/丢失。

示例- 对于在端口27017上本地运行的 mongodb 服务器当服务器关闭时会出现以下错误：

MongooseServerSelectionError: connect ECONNREFUSED 127.0.0.1:27017

如果您使用 mongodb URI 连接到数据库，请确保它看起来像这样

"mongodb://<hostname/hostIP>:<port>"