适用于京东JD.com图片抓取与下载打包。在商品详情页输入Ctrl+Q，即可触发爬取下载。
// ==UserScript==
// @name JD Thief_Zip
// @namespace http://tampermonkey.net/
// @version 3.1
// @description 适用于京东JD.com图片抓取与下载打包。在商品详情页输入Ctrl+Q，即可触发爬取下载。
// @author Soul_Yin
// @match *://item.jd.com/*
// @require https://cdn.bootcdn.net/ajax/libs/jszip/3.10.0/jszip.min.js
// @require https://cdn.bootcdn.net/ajax/libs/FileSaver.js/2.0.5/FileSaver.min.js
// @require https://cdnjs.cloudflare.com/ajax/libs/jquery/1.8.3/jquery.min.js
// @icon data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @grant none
// @license MIT
// ==/UserScript==
(function () {
'use strict';
// Your code here...
// jszip打包下载图片
function saveImgZip(imgUrlArrs) {
var imgUrlArr = []; // 图片列表
imgUrlArr = imgUrlArrs
var imgBase64 = {};//存放转成base64的图片，采用键值对形式就行存储，不采用数组。因为数组在异步中会导致存取数据的无序，数据混乱
var imgNameArr = []; // 图片名称
var imageSuffix = []; // 图片后缀
for (var i = 0; i < imgUrlArrs.length; i++) {
// 图片后缀
var suffix = imgUrlArrs[i].substring(imgUrlArrs[i].lastIndexOf("."));
imageSuffix.push(suffix);
//获取文件的名称
var startIndex = imgUrlArrs[i].lastIndexOf("/");
var endIndex = imgUrlArrs[i].lastIndexOf(".");
var fileName = imgUrlArrs[i].substring(startIndex + 1, endIndex);
imgNameArr.push(fileName);
}
// 创建JSZip对象
var zip = new JSZip();
// 创建文件夹
var img = zip.folder("images");
// 读取图片返回base64
for (var i = 0; i < imgUrlArr.length; i++) {
getBase64(imgUrlArr[i], i).then(function (base64, index) {
//imgBase64.push(base64.substring(22)); // 去掉base64的图片格式前缀
imgBase64[index] = base64.substring(22);
}, function (err) {
console.log(err);
});
}
function downloadZip() {
setTimeout(function () {
if (imgUrlArr.length == Object.keys(imgBase64).length) {
for (var i = 0; i < imgUrlArr.length; i++) {
img.file(imgNameArr[i] + imageSuffix[i], imgBase64[i], { base64: true });
}
zip.generateAsync({ type: "blob" }).then(function (content) {
saveAs(content, "JD_Thief打包下载.zip"); // zip包命名
});
} else {
downloadZip();
}
}, 100);
}
downloadZip();
}
//图片转base64; 传入图片路径，返回base64
function getBase64(img, index) {
function getBase64Image(img, width, height) {
var canvas = document.createElement("canvas");
canvas.width = width ? width : img.width;
canvas.height = height ? height : img.height;
var ctx = canvas.getContext("2d");
ctx.drawImage(img, 0, 0, canvas.width, canvas.height);
var dataURL = canvas.toDataURL();
return dataURL;
}
var image = new Image();
image.crossOrigin = 'Anonymous';
image.src = img;
/*
* deferred对象是一个延迟对象，意思是函数延迟到某个点才开始执行，改变执行状态的方法有两个（成功：resolve和失败：reject），
* 分别对应两种执行回调（成功回调函数：done和失败回调函数fail）
* */
var deferred = $.Deferred();
if (img) {
image.onload = function () {
// 执行成功回调
deferred.resolve(getBase64Image(image), index);
}
return deferred.promise();
}
}
$(document).keyup(function (event) {
if (event.ctrlKey && event.keyCode === 81) { //KeyCode Q=81
let ul = document.getElementsByClassName("lh")[0];
let li = ul.getElementsByTagName("li");
let li_list = new Array();
//获取所有主图链接
for (var x of li) {
li_list.push(x.getElementsByTagName("img")[0].currentSrc);
};
//获取所有详情图
let main_div_list = document.getElementsByClassName("detail-content clearfix")[0].getElementsByClassName("ssd-module-wrap")[0].getElementsByTagName("div");
for (var i of main_div_list) {
let raw = window.getComputedStyle(i).backgroundImage
raw = raw.slice(5)
raw = raw.substring(0, raw.length - 2)
if (raw == '') {
continue
}
li_list.push(raw)
}
//获取所有详情图（京东页面数据获取有的时候会改变，写两个保证获取）
let raw=document.getElementsByClassName("ssd-module-wrap")
raw=raw[raw.length-1].getElementsByTagName("div")
for (var m of raw) {
let raw = window.getComputedStyle(m).backgroundImage
raw = raw.slice(5)
raw = raw.substring(0, raw.length - 2)
if (raw == '') {
continue
}
li_list.push(raw)
}
//处理所有链接
let final_list = new Array()
for (let [name, url] of li_list.entries()) {
let urll = url;
if (urll.includes("avif")) {
urll = url.substring(0, url.length - 5)
}
if (urll.includes("/n5/s54x54_jfs/")) {
urll = urll.replace("/n5/s54x54_jfs/", "/n1/s450x450_jfs/")
}
if (urll.includes("/n5/jfs/")) {
urll = urll.replace("/n5/jfs/", "/n1/jfs/")
}
final_list.push(urll)
}
console.log(final_list)
alert("下载请求已拉取，请耐心等待")
//图片打包下载
saveImgZip(final_list)
}
})
})();