nestjs学习day7

1.管道

import { Controller,Get,Param,ParseIntPipe,ParseUUIDPipe} from '@nestjs/common';
import { PipeService } from './pipe.service';
import * as uuid from 'uuid'
console.log(uuid.v4())
@Controller('pipe')
export class PipeController {
  constructor(private readonly pipeService: PipeService) {}
  @Get(':id')
  findOne(@Param('id',ParseUUIDPipe) id: string) {
    console.log(typeof id,'12121====>')
    return 'pipe'
    // return this.pipeService.findOne(+id);
  }

}

2.验证dto

• main.ts引入

import {ValidationPipe} from "@nestjs/common";

• createdto

import {IsNotEmpty,IsString,Length,IsNumber} from 'class-validator'
export class CreateLoginDto {
    @IsNotEmpty()
    @IsString()
    @Length(5,10,{
        message:"不能超过十个字符"
    })
    name:string;
    @IsNumber()
    age:number
}

• controller

@Post()
create(@Body() createLoginDto: CreateLoginDto) {
  return this.loginService.create(createLoginDto);
}