newMedia/js/lookPdf.js

var qs = parseQueryString(window.location.href),user_id,contract_url;
var request = '';
$().ready(function(){
    if(qs.user_id){user_id = qs.user_id}
    if(qs.contract_url){
        contract_url=qs.contract_url
    }
    // if(!getCookie('user_id') || getCookie('user_id') != user_id){
    //     window.location.href="index.html"
    // }
    showPdf('http://media-sign.oss-cn-beijing.aliyuncs.com/Contract/20200701/dev5efc749a450e7_user_id_8.pdf');
})
function showPdf(url) {
    // const CMAP_URL = 'https://unpkg.com/pdfjs-dist@2.0.489/cmaps/';
    // pdfjsLib.GlobalWorkerOptions.workerSrc ='./pdf.worker.js';//自己的路径
    // var loadingTask = pdfjsLib.getDocument({
    //     data: url,
    //     cMapUrl: CMAP_URL,
    //     cMapPacked: true,
    // }); 
    // loadingTask.promise.then(function(pdfDoc_) {
    //     console.log(pdfDoc_)
    //     // pdfDoc = pdfDoc_;
    //     // document.getElementById('page_count').textContent = pdfDoc.numPages;
    //     // // Initial/first page rendering
    //     // renderPage(pageNum);
    // });
    // return;
    pdfjsLib.workerSrc = 'js/pdf.worker.js';
    pdfjsLib.getDocument(url).then(function getPdfHelloWorld(pdf) {
        console.log(pdf)
        var $pop = $('#pop');
        var shownPageCount = pdf.numPages < 50 ? pdf.numPages : 50;//设置显示的编码
        var getPageAndRender = function (pageNumber) {
             pdf.getPage(pageNumber).then(function getPageHelloWorld(page) {
                 var scale = 1.8;
                 var viewport = page.getViewport(scale);
                 var $canvas = $('<canvas></canvas>').attr({
                     'height': viewport.height,
                     'width': viewport.width,
                 });
                 $pop.append($canvas);
                 
                 page.render({
                     canvasContext: $canvas[0].getContext('2d'),
                     viewport: viewport
                 });
             });
             if (pageNumber < shownPageCount) {
                 pageNumber++;
                 getPageAndRender(pageNumber);
             }  
        };
        getPageAndRender(1);        		   
    });
}


//获取地址栏参数
function parseQueryString(url) {
    var urlObj = {};
    var reg = /([^?=&]+)=([^?=&]+)/g;
    url.replace(reg, function($0, $1, $2) {
        urlObj[$1] = decodeURIComponent($2);
    })
    return urlObj;
 }
 // 展示错误提示信息
 function showMsg(msg) {
    var msgBox = document.getElementsByClassName('alert-info')[0];
    msgBox.getElementsByTagName("p")[0].innerHTML=msg;
    msgBox.style.display="block";
 
    setTimeout(function() {
       msgBox.style.display="none";
 
    }, 2000);
 }
   //取Cookie的值
function getCookie(name) {
    var arr, reg = new RegExp("(^| )" + name + "=([^;]*)(;|$)");
    if (arr = document.cookie.match(reg)){
        return arr[2];
    }else{
        return false
    }
}
   //写入到Cookie
//name:cookie名称  value:cookie值 
function setCookie(name,value){
    var exp = new Date();
    exp.setTime(exp.getTime() + 12 * 60 * 60000);//过期时间 12小时
    // exp.setTime(exp.getTime() + 60 * 10000);//过期时间 10分钟
    document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
}