Coffee_Candy

77 分类: nodejs后端开发,GDPU杂事

nodejs实习面试题

2024-12-07T15:32:07.png
我写的一坨大便的答案(没有包含MVC设计模式)

shop.ts

import * as http from 'http';
const axios=require('axios')
const express=require('express')
// websocket,tcp,socket.io
const socketio=require('socket.io')
const fs = require('fs');
const path = require('path');
const jwt=require('jsonwebtoken')
const {expressjwt} = require('express-jwt');
const app=express();
const server = http.createServer(app)
const bodyParser = require('body-parser');
const io=socketio(server,{
    path:'/socket.io/',
    pingTimeout: 1000 * 60,//超时时间
    pingInterval: 1000 * 1,//ping的时间
    transports: ['websocket', 'polling'],//传输方式
    allowUpgrades: true,//传输是否升级
    httpCompression: true,//是否加密
    allowEIO3: true,
    cors:{
        origin: "https://127.0.0.1:8080",  // 必须和客户端请求的 origin 一致
        methods: ["GET", "POST"],
        credentials: true
    },
    connectionStateRecovery: {
        // the backup duration of the sessions and the packets
        maxDisconnectionDuration: 2 * 60 * 1000,
        // whether to skip middlewares upon successful recovery
        skipMiddlewares: true,
    }
});

//测试用数据添加
import { ShopDataStructure } from './shopdatastructure';
let data_structure=
[
    { id: 1, name: "Chicken Wing", category: "Food", qty: 3, price: 10 },
    { id: 2, name: "Pizza", category: "Food", qty: 1, price: 50 },
    { id: 3, name: "Hamburger", category: "Food", qty: 1, price: 12 },
    { id: 4, name: "Coca Cola", category: "Drink", qty: 2, price: 5 },
    { id: 5, name: "Orange Juice", category: "Drink", qty: 1, price: 15 },
    { id: 6, name: "Potato Chips", category: "Snack", qty: 1, price: 8 },
    { id: 7, name: "tomato", category: "Vegetable", qty: 1, price: 2 },
]
let shopdatastructure=new ShopDataStructure();
shopdatastructure.InitShopDataStructure(data_structure)


app.get('/all',(req:any,res:any)=>{
    let alldata=shopdatastructure.GetIdAllData()//一个map
    let returndata:any[]=[];
    for(let data of alldata)
    {
        returndata.push(data);
    }
    res.send({alldata:returndata});
})

app.get('/all/:id',(req:any,res:any)=>{
    const id = parseInt(req.params.id);
    console.log(id)
    let alldata=shopdatastructure.GetIdAllData()//一个map
    console.log(alldata.get(id))
    res.send({iddata:alldata.get(id)})
})

app.get('/:category/:id',(req:any,res:any)=>{
    const id = parseInt(req.params.id);
    let alldata=shopdatastructure.GetIdAllData();
    let shopdata=alldata.get(id)
    console.log(shopdata?.category,req.params.category)
    if(shopdata?.category==req.params.category)
    {
        res.send({category_id_data:shopdata})
    }
})

app.get('/food',(req:any,res:any)=>{
    let alldata=shopdatastructure.GetCategoryData();
    let shopdata=alldata.get("Food")
    res.send({food_data:shopdata})
})


app.get('/drink/:id',(req:any,res:any)=>{
    const id = parseInt(req.params.id);
    let alldata=shopdatastructure.GetIdAllData();
    let shopdata=alldata.get(id)
    if(shopdata?.category=="drink")
    {
        res.send({category_id_data:shopdata})
    }
})

server.listen('8080', () => {
    console.log('listen');
});

shopdata.ts

export class ShopData{
    public id:number=0;
    public name:string="";
    public category:string="";
    public qty:number=0;
    public price:number=0;
    constructor(id:number,name:string,category:string,qty:number,price:number)
    {
        this.id=id
        this.name=name
        this.category=category
        this.qty=qty
        this.price=price
    }

}

shopdatastructure.ts

import { ShopData } from "./shopdata";

export class ShopDataStructure {
  public shopidmap: Map<number, ShopData> = new Map<number, ShopData>();
  public shopcategorymap: Map<string, ShopData[]> = new Map<string, ShopData[]>();

  constructor() {}

  InitShopDataStructure(data_array: any) {
    for (let t_data of data_array) {
      let shopdata = new ShopData(
        t_data.id,
        t_data.name,
        t_data.category,
        t_data.qty,
        t_data.price
      );
      this.setshopdata(shopdata);
    }
    console.log(this.shopidmap)
    console.log(this.shopcategorymap)
  }

  GetIdAllData() {
    return this.shopidmap;
  }

  GetCategoryData() {
    return this.shopcategorymap;
  }

  setshopdata(shopdata: ShopData) {
    // 先将商店数据加入 shopidmap
    this.shopidmap.set(shopdata.id, shopdata);

    // 获取对应类别的商店数组，如果不存在则初始化为空数组
    let tcategory = this.shopcategorymap.get(shopdata.category);
    if (!tcategory) {
      tcategory = []; // 初始化为空数组
    }
    
    // 将新商店数据推入该类别数组中
    tcategory.push(shopdata);

    // 更新类别映射
    this.shopcategorymap.set(shopdata.category, tcategory);
  }
}

很烦第一次参加笔试,想写多点东西,反应过来的时候时间就不够了,写了依托答辩,没测试就交了第一次邮件,后面看了一下好像忘记id是number来着,艹果然写出bug了,又交了第二次,然后又忘记发简历

后面又突然发现没按MVC设计模式做哈哈哈寄了,菜就多练
更改后的答案

Moudel,shopdataModel.ts,shopdata.ts

**shopdataModel.ts**
import { ShopData } from "./shopdata";

export class ShopDataStructure {
  public shopidmap: Map<number, ShopData> = new Map<number, ShopData>();
  public shopcategorymap: Map<string, ShopData[]> = new Map<string, ShopData[]>();

  constructor() {}

  InitShopDataStructure(data_array: any) {
    for (let t_data of data_array) {
      let shopdata = new ShopData(
        t_data.id,
        t_data.name,
        t_data.category,
        t_data.qty,
        t_data.price
      );
      this.setshopdata(shopdata);
    }
    console.log(this.shopidmap)
    console.log(this.shopcategorymap)
  }

  GetIdAllData() {
    return this.shopidmap;
  }

  GetCategoryData() {
    return this.shopcategorymap;
  }

  setshopdata(shopdata: ShopData) {
    // 先将商店数据加入 shopidmap
    this.shopidmap.set(shopdata.id, shopdata);

    // 获取对应类别的商店数组，如果不存在则初始化为空数组
    let tcategory = this.shopcategorymap.get(shopdata.category);
    if (!tcategory) {
      tcategory = []; // 初始化为空数组
    }
    
    // 将新商店数据推入该类别数组中
    tcategory.push(shopdata);

    // 更新类别映射
    this.shopcategorymap.set(shopdata.category, tcategory);
  }
}

**shopdata.ts**
export class ShopData{
    public id:number=0;
    public name:string="";
    public category:string="";
    public qty:number=0;
    public price:number=0;
    constructor(id:number,name:string,category:string,qty:number,price:number)
    {
        this.id=id
        this.name=name
        this.category=category
        this.qty=qty
        this.price=price
    }

}

Control,shopcontrol.ts

import { Request, Response } from 'express';
import {ShopDataStructure} from './shopdataModel'

let data_structure=
[
    { id: 1, name: "Chicken Wing", category: "Food", qty: 3, price: 10 },
    { id: 2, name: "Pizza", category: "Food", qty: 1, price: 50 },
    { id: 3, name: "Hamburger", category: "Food", qty: 1, price: 12 },
    { id: 4, name: "Coca Cola", category: "Drink", qty: 2, price: 5 },
    { id: 5, name: "Orange Juice", category: "Drink", qty: 1, price: 15 },
    { id: 6, name: "Potato Chips", category: "Snack", qty: 1, price: 8 },
    { id: 7, name: "tomato", category: "Vegetable", qty: 1, price: 2 },
]
let shopdatastructure=new ShopDataStructure();
shopdatastructure.InitShopDataStructure(data_structure)


export const getall=(req:Request,res:Response)=>{
    let alldata=shopdatastructure.GetIdAllData()//一个map
    let returndata:any[]=[];
    for(let data of alldata)
    {
        returndata.push(data);
    }
    res.send({alldata:returndata});
}

export const getuse_id=(req:Request,res:Response)=>{
    const id = parseInt(req.params.id);
    console.log(id)
    let alldata=shopdatastructure.GetIdAllData()//一个map
    console.log(alldata.get(id))
    res.send({iddata:alldata.get(id)})
}

export const getuse_category_id=(req:Request,res:Response)=>{
    const id = parseInt(req.params.id);
    let alldata=shopdatastructure.GetIdAllData();
    let shopdata=alldata.get(id)
    console.log(shopdata?.category,req.params.category)
    if(shopdata?.category==req.params.category)
    {
        res.send({category_id_data:shopdata})
    }
}

export const getuse_food=(req:any,res:any)=>{
    let alldata=shopdatastructure.GetCategoryData();
    let shopdata=alldata.get("Food")
    res.send({food_data:shopdata})
}

export const getuse_drink_id=(req:Request,res:Response)=>{
    const id = parseInt(req.params.id);
    let alldata=shopdatastructure.GetIdAllData();
    let shopdata=alldata.get(id)
    if(shopdata?.category=="drink")
    {
        res.send({category_id_data:shopdata})
    }
}

Routes,shoproutes.ts

import { Router } from "express";

import * as col from "./shopcontrol"

export const router=Router()

router.get('/all',col.getall)
router.get('/all/:id',col.getuse_id)
router.get('/:category/:id',col.getuse_category_id)
router.get('/food',col.getuse_food)
router.get('/drink/:id',col.getuse_drink_id)

shop.ts

import * as http from 'http';
const express=require('express')
const app=express();
const server = http.createServer(app)
import {router} from './shoproutes'

app.use(router)
server.listen('8080', () => {
    console.log('listen');
});

这样子的写法才相对正确一点,总的来说是一次不错的考核吧,比较基础的,但是我确实在nodejs设计模式方面好像还是不太行,也确实菜哈哈哈,不过现在学到了,机会是留给有准备的人的,希望看到这篇文章的各位以我为鉴,说实话我的nodejs水平在笔试之前还停留在6月份那会

#none

  • 更新于: 2024年12月09日 20:26

作者: Coffee_Candy

链接: https://www.zhoumrdewo.com.cn/index.php/archives/184/

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