import { NestFactory } from '@nestjs/core';
import { AppModule } from './app.module';
import { Response } from './common/response'
import { HttpFilter } from './common/filter'
import { SwaggerModule, DocumentBuilder } from '@nestjs/swagger'

async function bootstrap() {
  const app = await NestFactory.create(AppModule)
  // 设置全局前缀
  app.setGlobalPrefix('api/v1')
  // 生成文档
  const options = new DocumentBuilder()
    .setTitle('Nestjs API 接口文档') // 文档标题
    .setDescription('Nestjs API 学习文档') // 文档描述
    .setVersion('1.0') // 文档版本
    .addBearerAuth() // 添加认证
    .setBasePath('api/v1') // 设置基础路径
    .build() // 生成文档配置
  // 创建 Swagger 文档
  const document = SwaggerModule.createDocument(app, options)
  // 挂载 Swagger 文档到 /api-docs 路由
  SwaggerModule.setup('/api-docs', app, document)
  // 响应拦截器
  app.useGlobalInterceptors(new Response())
  // 错误过滤器
  app.useGlobalFilters(new HttpFilter())
  await app.listen(process.env.APP_PORT);
}
bootstrap();

import { ApiProperty } from "@nestjs/swagger";

export class CreateUserDto {
    id?: number;
    @ApiProperty({
        description: '用户名',
        default: '王二',
        type: String
    })
    username: string;
    @ApiProperty({
        description: '密码',
        default: '123456',
        type: String
    })
    password: string;
    @ApiProperty({
        description: '年龄',
        default: 18,
        type: Number
    })
    age: number;
}

import { Controller, Get, Post, Body, Patch, Param, Delete, HttpStatus, HttpException } from '@nestjs/common';
import { UserService } from './user.service';
import { CreateUserDto } from './dto/create-user.dto';
import { UpdateUserDto } from './dto/update-user.dto';
import { ApiBody, ApiOperation, ApiTags } from '@nestjs/swagger';

@Controller('user')
@ApiTags('用户') // 标记路由
export class UserController {
  constructor(private readonly userService: UserService) { }

  @Post()
  @ApiOperation({ summary: '创建用户' })
  create(@Body() createUserDto: CreateUserDto) {
    return this.userService.create(createUserDto);
  }

  @Get()
  @ApiOperation({ summary: '查询所有用户' })
  findAll() {
    const a = process.env.SALT
    return this.userService.findAll();
  }

  @Get(':id')
  @ApiOperation({ summary: '根据id查询用户' })
  findOne(@Param('id') id: string) {
    // 根据id查询用户
    const user = this.userService.findOne(+id)
    if (!user) {
      throw new HttpException('用户不存在', HttpStatus.NOT_FOUND)
    } else {
      return user
    }
  }

  @Patch(':id')
  @ApiOperation({ summary: '根据id更新用户' })
  update(@Param('id') id: string, @Body() updateUserDto: UpdateUserDto) {
    return this.userService.update(+id, updateUserDto);
  }

  @Delete(':id')
  @ApiOperation({ summary: '根据id删除用户' })
  remove(@Param('id') id: string) {
    return this.userService.remove(+id);
  }
}