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来源：3-5 CLI初试：启动 Nest 应用程序 + 创建控制器

ghnhmgkjfcg

2022-11-15

// user.controller
import { Controller, Get, Query } from '@nestjs/common';
import { UserService, GetNumber } from './user.service';

@Controller('user')
export class UserController {
  constructor(private readonly UserService: UserService) {}
  @Get()
  getUsers(): any {
    return {
      code: 0,
      data: [],
      msg: '请求成功',
    };
  }

  @Get('/range')
  getNum(@Query() query: { num: string }): GetNumber {
    return this.UserService.getNumber(query.num);
  }
}

//user.service 
import { Injectable } from '@nestjs/common';

export interface GetNumber {
  code: number;
  msg: string;
  data: string[];
}

@Injectable()
export class UserService {
  getNumber(num: string): GetNumber {
    const regExp = /^[0-9]*[1-9][0-9]*$/;
    if (!regExp.test(num)) {
      return {
        code: 5000,
        msg: '请求失败，请输入正整数',
        data: [],
      };
    }
    const arr: string[] = [];
    for (let i = 1; i <= Number(num); i++) {
      arr.push(String(i));
    }
    return {
      code: 0,
      msg: '请求成功',
      data: arr,
    };
  }
}

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3回答

zakerking1991

2023-03-18

import { Controller, Get, Req } from '@nestjs/common';
import { Request } from 'express';
import { RangeService } from './range.service';

@Controller('range')
export class RangeController {
  constructor(private readonly rangeService: RangeService) {}

  @Get('list')
  getRange(@Req() request: Request): RestResponse<string[]> {
    return this.rangeService.getRange(request.query);
  }
}

import { Injectable } from '@nestjs/common';

@Injectable()
export class RangeService {
  getRange(query: Record<string, any>): RestResponse<string[]> {
    const { num } = query;
    return {
      success: true,
      data: !(typeof num === 'string' && /^\d+$/.test(num))
        ? undefined
        : new Array(+num).fill(0).map((_, i) => `${i + 1}`),
      code: 0,
    };
  }
}

Brian

Nice啊，ES6学的不错，细节+num, Array fill，加油。

2023-03-28

共1条回复