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下载gb688.cn上的国标文件
当前为
// ==UserScript==
// @name gb688下载
// @namespace https://github.com/lzghzr/TampermonkeyJS
// @version 1.0.7
// @author lzghzr, chorar
// @description 下载gb688.cn上的国标文件
// @require https://cdn.bootcdn.net/ajax/libs/html2canvas/1.4.1/html2canvas.min.js
// @require https://cdn.bootcss.com/jspdf/1.3.4/jspdf.debug.js
// @require https://cdn.bootcdn.net/ajax/libs/layer/3.5.1/layer.min.js
// @supportURL https://github.com/lzghzr/TampermonkeyJS/issues
// @match *://*.gb688.cn/bzgk/gb/showGb*
// @match *://*.samr.gov.cn/bzgk/gb/showGb*
// @connect c.gb688.cn
// @license MIT
// @grant none
// ==/UserScript==
(function() {
'use strict';
$(document.body).append(`<link href="https://cdn.bootcdn.net/ajax/libs/layer/3.5.1/theme/default/layer.min.css" rel="stylesheet">`)
setTimeout(function (){
layer.msg('下载前请将网页滑动到最后(加载所有PDF内容),点击下载按钮开始下载', {
time: 0 //不自动关闭
,offset: 'r'
,btn: ['下载', '关闭']
,yes: function(index){
exportPdf()
}
});
}, 1000);
//导出pdf
function exportPdf() {
//克隆节点,默认为false,不复制方法属性,为true是所有复制。
var height = $("#viewer").height();
var width = $("#viewer").width();
var cloneDom = $("#viewer").clone(true);
console.log("height", height);
console.log("width", width);
//设置克隆节点的css属性,由于以前的层级为0,咱们只须要比被克隆的节点层级低便可。
cloneDom.css({
"background-color": "white",
//"position": "fixed",
//"top": "0",
//"left": "0",
"opacity": "0",
"z-index": "-9999",
"height": height,
"width": width
});
//将克隆节点动态追加到body后面。
$("body").append(cloneDom);
html2canvas(
document.getElementsByClassName("pdfViewer")[1],
{
dpi: 172,//导出pdf清晰度
useCORS:true,
allowTaint: true,
taintTest: false,
//height:document.getElementById("detailData").scrollHeight,
//windowHeight:document.getElementById("detailData").scrollHeight,
//width:document.getElementById("detailData").scrollWidth,
//背景设为白色(默认为黑色)
background: "#FFFFFF",
onrendered: function (canvas) {
console.log("开始生成PDF");
var contentHeight = canvas.height;
var contentWidth = canvas.width;
//一页pdf显示html页面生成的canvas高度;
var pageHeight = contentWidth / 595.28 * 841.89;
//未生成pdf的html页面高度
var leftHeight = contentHeight;
//pdf页面偏移
var position = 0;
//a4纸的尺寸[595.28,841.89],html页面生成的canvas在pdf中图片的宽高
var imgWidth = 595.28;
var imgHeight = 595.28/contentWidth * contentHeight;
var pageData = canvas.toDataURL('image/jpeg', 1.0);
var pdf = new jsPDF('', 'pt', 'a4');
//有两个高度需要区分,一个是html页面的实际高度,和生成pdf的页面高度(841.89)
//当内容未超过pdf一页显示的范围,无需分页
if (leftHeight < pageHeight) {
pdf.addImage(pageData, 'JPEG', 30, 0, imgWidth, imgHeight );
} else {
while(leftHeight > 0) {
pdf.addImage(pageData, 'JPEG', 30, position, imgWidth, imgHeight)
leftHeight -= pageHeight;
position -= 841.89;
//避免添加空白页
if(leftHeight > 0) {
pdf.addPage();
}
}
}
var d = new Date();
var month = d.getMonth();
month = month+1 >12 ? 1:month+1;
var time = ""+d.getFullYear()+(("0"+month).slice(-2))+d.getDate()+(("0"+d.getHours()).slice(-2))+(("0"+d.getMinutes()).slice(-2))+(("0"+d.getSeconds()).slice(-2));
pdf.save(time+'.pdf');
}
}
)
}
})();