html5加载pdf

两个方法，跨域加载服务端pdf文件和加载静态pdf文件，调用代码见下方：
1.跨域加载pdf
window.open("pdf/web/viewer.html?file=http://xxx.xxx.xxx.xxx:8082//test/test.pdf");
里面的xxx是服务端ip，应该都能看懂。
把附件文件夹放入工程中即可使用

跨域加载需要导入的文件太多，占用空间太大

2.加载静态pdf，代码贴在最下方，说明在下面：
静态加载pdf需要先将pdf文件放入工程中，同时需要导入pdf.js 和pdf.worker.js
scale = 2,//清晰度，越大清晰度越高

• 可在页面中嵌入pdf文件，页面中需要有以下样式：
  <div>
  <button id="prev">上一页</button>
  <button id="next">下一页</button> &nbsp; &nbsp;
  <span>Page: <span id="page_num"></span> / <span id="page_count"></span></span>
  </div>
  <canvas id="the-canvas" style="width: 100%; overflow-y: auto;"></canvas>

静态加载代码：

owner.loadPdfLocal = function(url){
var pdfDoc = null,
pageNum = 1,
pageRendering = false,
pageNumPending = null,
scale = 2,//清晰度，越大清晰度越高
canvas = document.getElementById('the-canvas'),
ctx = canvas.getContext('2d');

    /**  
     * Get page info from document, resize canvas accordingly, and render page.  
     * @param num Page number.  
     */  
    function renderPage(num) {  
        pageRendering = true;  
        // Using promise to fetch the page  
        pdfDoc.getPage(num).then(function(page) {  
            var viewport = page.getViewport(scale);  
            canvas.height = viewport.height;  
            canvas.width = viewport.width;  

            // Render PDF page into canvas context  
            var renderContext = {  
                canvasContext: ctx,  
                viewport: viewport  
            };  
            var renderTask = page.render(renderContext);  

            // Wait for rendering to finish  
            renderTask.promise.then(function() {  
                pageRendering = false;  
                if(pageNumPending !== null) {  
                    // New page rendering is pending  
                    renderPage(pageNumPending);  
                    pageNumPending = null;  
                }  
            });  
        });  

        // Update page counters  
        document.getElementById('page_num').textContent = num;  
    }  

    /**  
     * If another page rendering in progress, waits until the rendering is  
     * finised. Otherwise, executes rendering immediately.  
     */  
    function queueRenderPage(num) {  
        if(pageRendering) {  
            pageNumPending = num;  
        } else {  
            renderPage(num);  
        }  
    }  

    /**  
     * Displays previous page.  
     */  
    function onPrevPage() {  
        if(pageNum <= 1) {  
            return;  
        }  
        pageNum--;  
        queueRenderPage(pageNum);  
    }  
    document.getElementById('prev').addEventListener('click', onPrevPage);  

    /**  
     * Displays next page.  
     */  
    function onNextPage() {  
        if(pageNum >= pdfDoc.numPages) {  
            return;  
        }  
        pageNum++;  
        queueRenderPage(pageNum);  
    }  
    document.getElementById('next').addEventListener('click', onNextPage);  

    /**  
     * Asynchronously downloads PDF.  
     */  
    PDFJS.getDocument(url).then(function(pdfDoc_) {  
        pdfDoc = pdfDoc_;  
        document.getElementById('page_count').textContent = pdfDoc.numPages;  

        // Initial/first page rendering  
        renderPage(pageNum);  
    });  
}