typeorm node后端数据库ORM

徐同保2025-12-03 8:12

装包

npm install typeorm -g

使用其 CLI 命令生成启动项目

typeorm init --name m-typeorm --database sqlite

修改数据库文件的名称

m-typeorm\src\data-source.ts

javascript 复制代码

import "reflect-metadata"
import { DataSource } from "typeorm"
import { User } from "./entity/User"

export const AppDataSource = new DataSource({
    type: "sqlite",
    database: "database2.sqlite",
    synchronize: true,
    logging: false,
    entities: [User],
    migrations: [],
    subscribers: [],
})

运行

npm run start

User.ts:

javascript 复制代码

import { Entity, PrimaryGeneratedColumn, Column } from "typeorm"

@Entity()
export class User {

    @PrimaryGeneratedColumn()
    id: number

    @Column()
    firstName: string

    @Column()
    lastName: string

    @Column()
    age: number

}

index.ts:

javascript 复制代码

import { AppDataSource } from "./data-source"
import { User } from "./entity/User"

AppDataSource.initialize().then(async () => {

    console.log("Inserting a new user into the database...")
    const user = new User()
    user.firstName = "Timber"
    user.lastName = "Saw"
    user.age = 25
    await AppDataSource.manager.save(user)
    console.log("Saved a new user with id: " + user.id)

    console.log("Loading users from the database...")
    const users = await AppDataSource.manager.find(User)
    console.log("Loaded users: ", users)

    console.log("Here you can setup and run express / fastify / any other framework.")

}).catch(error => console.log(error))