Ben Awad视频教程npx mikro orm迁移的问题:创建

Question

我一步一步地遵循教程，当我进入运行npx mikro-orm migration:create的部分时，我得到了这个错误

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-servernode_modulespglibsasl.js:133:17)
at Hi (C:lireddit-servernode_modulespglibsasl.js:137:13)
at Object.continueSession (C:lireddit-servernode_modulespglibsasl.js:32:24)
at Client._handleAuthSASLContinue (C:lireddit-servernode_modulespglibclient.js:248:10)
at Connection.emit (events.js:314:20)
at Connection.EventEmitter.emit (domain.js:483:12)
at C:lireddit-servernode_modulespglibconnection.js:109:12
at Parser.parse (C:lireddit-servernode_modulespg-protocolsrcparser.ts:102:9)
at Socket.<anonymous> (C:lireddit-servernode_modulespg-protocolsrcindex.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，很可能是user或password字段。以下是相关问题：

https://github.com/mikro-orm/mikro-orm/issues/866

如果你不提供它们，MikroORM将为给定的驱动程序选择默认值，即postgres用户和空密码——你的postgres安装显然没有这个用户的空密码。

如果您使用docker来创建postgres服务器，这就是您可以让它接受空pws:的方法

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

Answer 2

您似乎没有指定要在MikroORM.init内部传递的对象的password或user属性。

这应该工作

export default {
entities: [Entity],
dbName: "yourDatabaseName",
type: "postgresql",
user: "yourUserName",
password: "yourPassword"
} as Parameters<typeof MikroORM.init>[0];