Ben Awad 视频教程问题与 npx mikro-orm 迁移：创建

Question

我正在逐步按照教程进行操作，当我到达 run 的部分时npx mikro-orm migration:create，出现此错误TypeError [ERR_INVALID_ARG_TYPE]: The "key" argument must be of type string or an instance of Buffer, TypedArray, DataView, or KeyObject. Received null    at prepareSecretKey (internal/crypto/keys.js:322:11)    at new Hmac (internal/crypto/hash.js:113:9)    at Object.createHmac (crypto.js:147:10)    at createHMAC (C:\lireddit-server\node_modules\pg\lib\sasl.js:133:17)    at Hi (C:\lireddit-server\node_modules\pg\lib\sasl.js:137:13)    at Object.continueSession (C:\lireddit-server\node_modules\pg\lib\sasl.js:32:24)    at Client._handleAuthSASLContinue (C:\lireddit-server\node_modules\pg\lib\client.js:248:10)    at Connection.emit (events.js:314:20)    at Connection.EventEmitter.emit (domain.js:483:12)    at C:\lireddit-server\node_modules\pg\lib\connection.js:109:12    at Parser.parse (C:\lireddit-server\node_modules\pg-protocol\src\parser.ts:102:9)    at Socket.<anonymous> (C:\lireddit-server\node_modules\pg-protocol\src\index.ts:7:48)    at Socket.emit (events.js:314:20)    at Socket.EventEmitter.emit (domain.js:483:12)    at addChunk (_stream_readable.js:298:12)    at readableAddChunk (_stream_readable.js:273:9)```I can't find any solution on google, and the tut doesn't point out how to login to postgresql on the app

Answer 1

您缺少一些配置，很可能user是或password字段。

如果您不提供它们，MikroORM 将为给定的驱动程序选择默认值，即postgres用户和空密码 - 您的 postgres 安装显然没有该用户的空密码。

如果你使用 docker 创建 postgres 服务器，你可以这样让它接受空 pws：

postgre:
    image: postgres:12.4
    ports:
      - 5432:5432
    environment:
      POSTGRES_HOST_AUTH_METHOD: trust   <-- here

Answer 2

似乎您没有指定password要user在MikroORM.init.

这应该工作

export default {

  entities: [Entity],

  dbName: "yourDatabaseName",

  type: "postgresql",

  user: "yourUserName",

  password: "yourPassword"

} as Parameters<typeof MikroORM.init>[0];