新建NestJS项目
官网
https://docs.nestjs.com/controllers
参考
https://user-cube.medium.com/build-a-rest-api-from-scratch-using-nestjs-37bfcf81cc5f
注意点：
1：NestJS可以选择两种不同的Http平台，express和fastify
https://docs.nestjs.com/first-steps#platform
2：Controller的通配符
@Get('ab*cd') //星号代表通配符
findAll() {
return 'This route uses a wildcard';
}
3：返回Response时增加header
https://docs.nestjs.com/controllers#headers
4：异常处理/exception filter
GlobalFilter / controller级别的filter / action级别的filter
https://docs.nestjs.com/exception-filters
5：配置
configuration.ts
app.module.ts
main.ts
安装
//全局安装nest cli
npm i -g @nestjs/cli
//clone模板项目
git clone https://github.com/nestjs/typescript-starter.git ebd.front.bff
打开.prettierrc，增加规则："endOfLine":"auto"
nest g controller items
cd到对应文件夹下：
nest g interface items
新建Services文件夹，cd到该文件夹
nest g service items
//配置
npm install @nestjs/config --save
//日志
npm install --save nest-winston winston
//实现winston按日记录
npm install winston-daily-rotate-file
最终的app.module.ts
import { Module } from '@nestjs/common';
import { AppController } from './app.controller';
import { AppService } from './app.service';
import { HeaderModule } from './header/header.module';
import { WinstonModule } from 'nest-winston';
import * as winston from 'winston';
import 'winston-daily-rotate-file';
@Module({
imports: [
HeaderModule,
WinstonModule.forRoot({
transports: [
new winston.transports.DailyRotateFile({
dirname: 'logs',
filename: 'application-%DATE%.log',
datePattern: 'YYYY-MM-DD-HH',
zippedArchive: true,
maxSize: '20m',
maxFiles: '14d',
format: winston.format.combine(
winston.format.timestamp(),
winston.format.json(),
),
}),
],
}),
],
controllers: [AppController],
providers: [AppService],
})
export class AppModule {}
Controller文件
import { Controller, Get, Param, Inject } from '@nestjs/common';
import { Menu } from './interfaces';
import { MenuService } from './services/menu/menu.service';
import { WINSTON_MODULE_PROVIDER } from 'nest-winston';
import { Logger } from 'winston';
@Controller('header')
export class HeaderController {
constructor(
@Inject(WINSTON_MODULE_PROVIDER) private readonly logger: Logger,
private readonly menuService: MenuService,
) {}
@Get('menu')
async getMenus(): Promise<Menu[]> {
const menus = await this.menuService.getAllMenus();
this.logger.info(`header/menu -> ${JSON.stringify(menus)}`);
return menus;
}
@Get()
findAll(): string {
return 'All Items';
}
@Get(':id')
findById(@Param() param): string {
return param.id;
}
}
