typeOrm 教程 创建链接数据库

实体 User ：

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

@Entity()
export class User {

    @PrimaryGeneratedColumn()
    id: number

    @Column()
    firstName: string

    @Column()
    lastName: string

    @Column()
    age: number

}

数据库配置项 ：

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

// 直接设置所有的实体一次性添加到 entitries 属性中
// [__dirname + "/entity/*.js"]

export const AppDataSource = new DataSource({
    type: "postgres",
    host: "192.168.33.200",
    port: 5432,
    username: "postgres",
    password: "123456",
    database: "postgres",
    synchronize: true,
    logging: false,
    entities: [__dirname + "/entity/*.ts"],
    migrations: [],
    subscribers: [],
})

修改数据库：

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

// 初始数据库
AppDataSource.initialize().then(async (connection) => {

    console.log("Inserting a new user into the database...")
    const user = new User()

    // 1. 从数据库获取 User 表
    let UserRepository = connection.getRepository(User);
    // 2. 获取Use表的全部内容
    let userToUpdate = await UserRepository.find();
   
    userToUpdate.forEach((e) => {
        e.firstName = "admin"
        e.lastName = "123456"
        e.age = 100
    })

    // 异步保存
    await UserRepository.save(userToUpdate)
    console.log("Saved a new user with id: " + user.id)
}).catch(error => console.log(error))