执行node src/db/db.js报错

还是没有显示连接成功

D:\学习\移动互联\server>node src/db/db.js

mongoose connect error MongooseServerSelectionError: getaddrinfo ENOTFOUND localhsot

    at NativeConnection.Connection.openUri (D:\学习\移动互联\server\node_modules\mongoose\lib\connection.js:807:32)

    at D:\学习\移动互联\server\node_modules\mongoose\lib\index.js:342:10

    at D:\学习\移动互联\server\node_modules\mongoose\lib\helpers\promiseOrCallback.js:32:5

    at new Promise (<anonymous>)

    at promiseOrCallback (D:\学习\移动互联\server\node_modules\mongoose\lib\helpers\promiseOrCallback.js:31:10)

    at Mongoose._promiseOrCallback (D:\学习\移动互联\server\node_modules\mongoose\lib\index.js:1181:10)

    at Mongoose.connect (D:\学习\移动互联\server\node_modules\mongoose\lib\index.js:341:20)

    at Object.<anonymous> (D:\学习\移动互联\server\src\db\db.js:15:10)

    at Module._compile (node:internal/modules/cjs/loader:1101:14)

    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1153:10) {

  reason: TopologyDescription {

    type: 'Unknown',

    servers: Map(1) { 'localhsot:27017' => [ServerDescription] },

    stale: false,

    compatible: true,

    heartbeatFrequencyMS: 10000,

    localThresholdMS: 15,

    logicalSessionTimeoutMinutes: undefined

  },

  code: undefined

}

node:internal/process/promises:246

          triggerUncaughtException(err, true /* fromPromise */);

          ^

MongooseServerSelectionError: getaddrinfo ENOTFOUND localhsot

    at NativeConnection.Connection.openUri (D:\学习\移动互联\server\node_modules\mongoose\lib\connection.js:807:32)

    at D:\学习\移动互联\server\node_modules\mongoose\lib\index.js:342:10

    at D:\学习\移动互联\server\node_modules\mongoose\lib\helpers\promiseOrCallback.js:32:5

    at new Promise (<anonymous>)

    at promiseOrCallback (D:\学习\移动互联\server\node_modules\mongoose\lib\helpers\promiseOrCallback.js:31:10)

    at Mongoose._promiseOrCallback (D:\学习\移动互联\server\node_modules\mongoose\lib\index.js:1181:10)

    at Mongoose.connect (D:\学习\移动互联\server\node_modules\mongoose\lib\index.js:341:20)

    at Object.<anonymous> (D:\学习\移动互联\server\src\db\db.js:15:10)

    at Module._compile (node:internal/modules/cjs/loader:1101:14)

    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1153:10) {

  reason: TopologyDescription {

    type: 'Unknown',

    servers: Map(1) {

      'localhsot:27017' => ServerDescription {

        _hostAddress: HostAddress { isIPv6: false, host: 'localhsot', port: 27017 },

        address: 'localhsot:27017',

        type: 'Unknown',

        hosts: [],

        passives: [],

        arbiters: [],

        tags: {},

        minWireVersion: 0,

        maxWireVersion: 0,

        roundTripTime: -1,

        lastUpdateTime: 249775744,

        lastWriteDate: 0,

        error: MongoNetworkError: getaddrinfo ENOTFOUND localhsot

            at connectionFailureError (D:\学习\移动互联\server\node_modules\mongodb\lib\cmap\connect.js:375:20)

            at Socket.<anonymous> (D:\学习\移动互联\server\node_modules\mongodb\lib\cmap\connect.js:295:22)

            at Object.onceWrapper (node:events:510:26)

            at Socket.emit (node:events:390:28)

            at emitErrorNT (node:internal/streams/destroy:157:8)

            at emitErrorCloseNT (node:internal/streams/destroy:122:3)

            at processTicksAndRejections (node:internal/process/task_queues:83:21) {

          [Symbol(errorLabels)]: Set(0) {}

        }

      }

    },

    stale: false,

    compatible: true,

    heartbeatFrequencyMS: 10000,

    localThresholdMS: 15,

    logicalSessionTimeoutMinutes: undefined

  },

  code: undefined

}

同学你好，从报错信息上看是27017端口监听不成功，同学有启动本地的MongoDB么？这个需要现在本地安装MongoDB，然后启动MongoDB。

1、MongoDB下载及安装

（1）下载MongoDB

（2）安装MongoDB

①双击安装程序进行安装

②修改安装路径为比较简洁的安装目录（C盘太满可以安装其他盘里）

③MongoDB文件夹下，查看是否有data和log文件夹

④在data文件夹中新建db文件夹

⑤log文件夹中新建mongod.log文件

⑥检查bin文件夹下是否有mongo.exe 和 mongod.exe

（4）启动MongoDB

①在MongoDB/bin目录下打开命令工具

②输入下列命令启动本地服务器

mongod.exe --dbpath C:\MongoDB\data\bin

③光标一直闪烁说明启动成功

（5）检测是否启动成功

①在MongoDB/bin目录下打开命令工具

②输入下列命令

mongo.exe --port 27017

③输入数字加减法测试，能够正常得出计算结果，则表示启动成功。

注意：在（4）启动MongoDB中启动的本地数据库的命令窗口是不能关闭的，关闭了就相当于是关闭了本地数据库，就无法连接成功了。

另外，老师研究了一下新版本的mongodb。以下两句代码都不在需要了，都注释掉即可：

希望可以帮到你，祝学习愉快！

又重新试了一遍 MongoDB启动了 加减法测试也验证成功了 命令窗口也没有关闭 但是还是不行