//range.controller.ts
import { Controller, Get, Query } from '@nestjs/common';
import { RangeService } from './range.service';

@Controller('range')
export class RangeController {
  constructor(private rangeService: RangeService) {}
  @Get()
  range(@Query('num') num: number): any {
    return this.rangeService.range(num);
  }
}

//range.service.ts

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

@Injectable()
export class RangeService {
  range(len: number): any {
    if (len && typeof Number(len) === 'number' && Number(len) >= 0) {
      const arr = Array.from({ length: len }, (v, i) => (i + 1).toString());
      return {
        code: 0,
        msg: '请求成功',
        data: arr,
      };
    } else {
      return {
        code: 400,
        msg: '参数错误',
        data: [],
      };
    }
  }
}