node.js - Node js中的Request函数后无法读取数据

Question

我在 Node js 中有一个使用 cherio 和 requests 的简单代码。问题很有趣，我没有任何错误，但问题是我迭代链接，当我写返回函数时，我将链接附加到堆栈或数组中，我没有取回我的数据

我还添加了评论，因此您可以在我打印时返回数据时阅读我越来越不确定有人可以帮忙吗

    /*
        Author: Soumil Shah 
        Website: http://soumilshah.herokuapp.com

    */
    try{
        const  cherio = require('cherio');
        const request = require('request');
        const fs = require('fs')
        console.log('All Modules Loaded ..... ')
    }catch(e){
        console.log(`Some Packages are missing ${e}`);
    }

    class Stack{

        constructor(){
            this.data = []
        }

        Add(elem){
            this.data.push(elem);
        }

        Size(){
            if (this.data.length == 0){return 0;}else{
                return this.data.length;
            }
        }

        Pop(){
            if (this.data.length == 0){
                return -1;
            }else{
                return this.data.pop()
            }
        }

        isEmpty(){
            if(this.data.length == 0){
                return true;}
        else{
            return false;}
        }

        getStack(){
            return this.data;
        }
    }

    class ImageHunter{

        constructor(WebsiteUrl = '',BaseUrl = ''){
            this.URL = WebsiteUrl;              // Website 
            this._Counter = 0;                  // Counter for creating File Name Image1.png etc 
            this.stack = new Stack();           // Stack Data Structure 
            this.BaseUrl =  BaseUrl;            // base URl 


            this.options = {
                'method': 'GET',
                'url': `${this.URL}`,
                'headers': {
                }
            };
        }

        Load()
        {
                const request = require('request'); 
                const cherio = require('cherio');

                request(this.options, (err,resp,html)=>
                {
                    if(!err && resp.statusCode ==200)
                    {
                        console.log(`Request was Success ${resp.statusCode}`)       // success Response
                        const $ = cherio.load(html);                                // create a chery Object

                        $("img").each((index, image)=>{
                            this.counter = this.counter + 1;                            // Count of Images 
                            var FileName = "Image"+ this.counter.toString() + '.jpg'    // createws FileName 

                            var img = $(image).attr('src');                              // find the src 
                            var baseUrl = this.BaseUrl                                   // get Base URl for Images 
                            var Links = baseUrl + img;

                            if (Links.toString().search(".jpg") > 0){
                                this.stack.Add(Links);                            
                            }
                        })

                    }else{
                        console.log("Error ")
                    }

                // This Works HERE ---- - - - -- -- - - -  
                console.log(`Stack Size ${this.stack.Size()}`);

                // Return Dont WORK
                return this.stack.getStack();
                })

        }

    }

    var elem;
    var image = new ImageHunter(WebsiteUrl='https://www.bridgeport.edu',BaseUrl='https://www.bridgeport.edu');
    var data = image.Load();
    console.log(data);

标签： node.js