一键导出图片
// ==UserScript==
// @name 理论资源下载器
// @namespace https://qinlili.bid
// @version 0.1
// @description 一键导出图片
// @author 琴梨梨
// @match */Service/?logic=PDFReaderController&call=readPDF&*
// @grant none
// @run-at document-end
// ==/UserScript==
(function() {
'use strict';
document.body.oncontextmenu = ""
var pageTotal = 0;
var picUrl = ""
//从0开始
var pageCurrent = 1;
let urlParams = new URLSearchParams(window.location.search);
var bookid = urlParams.get("bookid");
//下载指定页面图片
function downloadPic(page) {
picUrl = window.location.origin + "/Service/?logic=PDFReaderController&call=ReadImg&imgurl=" + btoa(bookid + "(" + page + ").jpg");
fetch(picUrl).then(res => res.blob().then(blob => {
var a = document.createElement('a');
var url = window.URL.createObjectURL(blob);
var filename = page + '.jpg';
a.href = url;
a.download = filename;
a.click();
window.URL.revokeObjectURL(url);
}))
}
//批量下载
function batchDownload() {
pageTotal = Number(document.getElementById("pageinfo").innerText.replace("共","").replace("页",""))
nextPage();
}
//太快了会丢页，手动减速
function nextPage(){
if(pageCurrent<=pageTotal){
downloadPic(pageCurrent);
pageCurrent++;
setTimeout(nextPage,250);}
}
//创建下载按钮
var downloadBtn = document.createElement("a");
downloadBtn.innerText = "批量下载全书";
downloadBtn.onclick = function () { batchDownload() };
document.querySelector("#ReaderTool").appendChild(downloadBtn);
})();