老师，工作中用到的是MySQL数据库，查找资料后，这样使用的，麻烦看下是否合理，有没有需要改进的地方？

• 创建entity

// feedback/entity/feedback.entity.ts
import { Column, Entity, PrimaryGeneratedColumn } from 'typeorm';

@Entity()
export class Feedback {
  // 主键自增
  @PrimaryGeneratedColumn()
  id: number;

  @Column()
  name: string;

  @Column()
  email: string;

  @Column()
  message: string;
}

• 创建repository

import { Repository } from 'typeorm';
import { Feedback } from './entity/feedback.entity';

export class FeedbackRepository extends Repository<Feedback> {}

• 创建service，service中调用repository完成数据库操作

import { Injectable } from '@nestjs/common';
import { Feedback } from './entity/feedback.entity';
import { InjectRepository } from '@nestjs/typeorm';
import { Repository } from 'typeorm';

@Injectable()
export class FeedbackService {
  constructor(
    @InjectRepository(Feedback)
    private FeedbackRepository: Repository<Feedback>,
  ) {}

  async findAll(): Promise<Feedback[]> {
    return await this.FeedbackRepository.find();
  }

  async create(feedback: Feedback): Promise<Feedback> {
    return await this.FeedbackRepository.save(feedback);
  }
}

• 创建controller，controller中调用service完成业务逻辑

import {
  Body,
  Controller,
  Get,
  HttpException,
  HttpStatus,
  Post,
} from '@nestjs/common';
import { FeedbackService } from './feedback.service';
import { Feedback } from './entity/feedback.entity';

@Controller('feedback')
export class FeedbackController {
  constructor(private readonly FeedbackService: FeedbackService) {}

  @Get('test')
  test() {
    throw new HttpException('获取数据失败', HttpStatus.BAD_REQUEST);
  }

  @Post('create')
  async create(@Body() feedback: Feedback) {
    return this.FeedbackService.create(feedback);
  }

  @Get('findAll')
  async findAll() {
    return this.FeedbackService.findAll();
  }
}