NestJs :如何在NestJs中实现node.js Post和Get逻辑

npm install -g @nestjs/cli

nest new my-app

cd my-app

nest generate controller cats

import { Controller, Get, Post, Body } from '@nestjs/common';
import { CreateCatDto } from './dto/create-cat.dto';
import { CatsService } from './cats.service';
import { Cat } from './interfaces/cat.interface';

@Controller('cats')
export class CatsController {
  constructor(private readonly catsService: CatsService) {}

  @Post()
  async create(@Body() createCatDto: CreateCatDto) {
    this.catsService.create(createCatDto);
  }

  @Get()
  async findAll(): Promise<Cat[]> {
    return this.catsService.findAll();
  }
}

nest generate service cats

import { Injectable } from '@nestjs/common';
import { CreateCatDto } from './dto/create-cat.dto';
import { Cat } from './interfaces/cat.interface';

@Injectable()
export class CatsService {
  private readonly cats: Cat[] = [];

  create(createCatDto: CreateCatDto) {
    const cat: Cat = {
      id: this.cats.length + 1,
      name: createCatDto.name,
      age: createCatDto.age,
    };
    this.cats.push(cat);
  }

  findAll(): Cat[] {
    return this.cats;
  }
}

nest generate module cats

import { Module } from '@nestjs/common';
import { CatsController } from './cats.controller';
import { CatsService } from './cats.service';

@Module({
  controllers: [CatsController],
  providers: [CatsService],
})
export class CatsModule {}

import { Module } from '@nestjs/common';
import { AppController } from './app.controller';
import { AppService } from './app.service';
import { CatsModule } from './cats/cats.module';

@Module({
  imports: [CatsModule],
  controllers: [AppController],
  providers: [AppService],
})
export class AppModule {}

npm run start

curl -X POST http://localhost:3000/cats -H 'Content-Type: application/json' -d '{"name":"Misty","age":2}'

curl http://localhost:3000/cats