如果您想导出一个表，可以查看Shield UI Grid小部件提供的导出示例。

它是通过像这样扩展配置来实现的:

...
exportOptions: {
    proxy: "/filesaver/save",
    pdf: {
        fileName: "shieldui-export",
        author: "John Smith",
        dataSource: {
            data: gridData
        },
        readDataSource: true,
        header: {
            cells: [
                { field: "id", title: "ID", width: 50 },
                { field: "name", title: "Person Name", width: 100 },
                { field: "company", title: "Company Name", width: 100 },
                { field: "email", title: "Email Address" }
            ]
        }
    }
}
...

你可以使用autoPrint()并将输出设置为'dataurlnewwindow'，如下所示:

function printPDF() {
    var printDoc = new jsPDF();
    printDoc.fromHTML($('#pdf').get(0), 10, 10, {'width': 180});
    printDoc.autoPrint();
    printDoc.output("dataurlnewwindow"); // this opens a new popup,  after this the PDF opens the print window view but there are browser inconsistencies with how this is handled
}

如前所述，您应该使用jsPDF和html2canvas。我还在jsPDF问题中发现了一个函数，它自动将您的pdf分割成多个页面(来源)

function makePDF() {

    var quotes = document.getElementById('container-fluid');

    html2canvas(quotes, {
        onrendered: function(canvas) {

        //! MAKE YOUR PDF
        var pdf = new jsPDF('p', 'pt', 'letter');

        for (var i = 0; i <= quotes.clientHeight/980; i++) {
            //! This is all just html2canvas stuff
            var srcImg  = canvas;
            var sX      = 0;
            var sY      = 980*i; // start 980 pixels down for every new page
            var sWidth  = 900;
            var sHeight = 980;
            var dX      = 0;
            var dY      = 0;
            var dWidth  = 900;
            var dHeight = 980;

            window.onePageCanvas = document.createElement("canvas");
            onePageCanvas.setAttribute('width', 900);
            onePageCanvas.setAttribute('height', 980);
            var ctx = onePageCanvas.getContext('2d');
            // details on this usage of this function: 
            // https://developer.mozilla.org/en-US/docs/Web/API/Canvas_API/Tutorial/Using_images#Slicing
            ctx.drawImage(srcImg,sX,sY,sWidth,sHeight,dX,dY,dWidth,dHeight);

            // document.body.appendChild(canvas);
            var canvasDataURL = onePageCanvas.toDataURL("image/png", 1.0);

            var width         = onePageCanvas.width;
            var height        = onePageCanvas.clientHeight;

            //! If we're on anything other than the first page,
            // add another page
            if (i > 0) {
                pdf.addPage(612, 791); //8.5" x 11" in pts (in*72)
            }
            //! now we declare that we're working on that page
            pdf.setPage(i+1);
            //! now we add content to that page!
            pdf.addImage(canvasDataURL, 'PNG', 20, 40, (width*.62), (height*.62));

        }
        //! after the for loop is finished running, we save the pdf.
        pdf.save('test.pdf');
    }
  });
}

我使用JSPDF和html2canvas进行CSS渲染，我导出特定div的内容，因为这是我的代码

$(document).ready(function () {
    let btn=$('#c-oreder-preview');
    btn.text('download');
    btn.on('click',()=> {

        $('#c-invoice').modal('show');
        setTimeout(function () {
            html2canvas(document.querySelector("#c-print")).then(canvas => {
                //$("#previewBeforeDownload").html(canvas);
                var imgData = canvas.toDataURL("image/jpeg",1);
                var pdf = new jsPDF("p", "mm", "a4");
                var pageWidth = pdf.internal.pageSize.getWidth();
                var pageHeight = pdf.internal.pageSize.getHeight();
                var imageWidth = canvas.width;
                var imageHeight = canvas.height;

                var ratio = imageWidth/imageHeight >= pageWidth/pageHeight ? pageWidth/imageWidth : pageHeight/imageHeight;
                //pdf = new jsPDF(this.state.orientation, undefined, format);
                pdf.addImage(imgData, 'JPEG', 0, 0, imageWidth * ratio, imageHeight * ratio);
                pdf.save("invoice.pdf");
                //$("#previewBeforeDownload").hide();
                $('#c-invoice').modal('hide');
            });
        },500);

        });
});

要将div捕获为PDF，您可以使用https://grabz.it解决方案。它有一个简单而灵活的JavaScript API，允许您捕获单个HTML元素(如div或span)的内容

为了实现它，你首先需要获得应用密钥和秘密，并下载(免费的)SDK。

现在来看一个例子。

假设你有HTML:

<div id="features">
    <h4>Acme Camera</h4>
    <label>Price</label>$399<br />
    <label>Rating</label>4.5 out of 5
</div>
<p>Cras ut velit sed purus porttitor aliquam. Nulla tristique magna ac libero tempor, ac vestibulum felisvulput ate. Nam ut velit eget
risus porttitor tristique at ac diam. Sed nisi risus, rutrum a metus suscipit, euismod tristique nulla. Etiam venenatis rutrum risus at
blandit. In hac habitasse platea dictumst. Suspendisse potenti. Phasellus eget vehicula felis.</p>

要捕获特征id下的内容，您需要:

//add the sdk
<script type="text/javascript" src="grabzit.min.js"></script>
<script type="text/javascript">
//login with your key and secret. 
GrabzIt("KEY", "SECRET").ConvertURL("http://www.example.com/my-page.html",
{"target": "#features", "format": "pdf"}).Create();
</script>

请注意目标:#feature。#feature是你的CSS选择器，就像前面的例子一样。现在，当页面加载时，将在脚本标记的相同位置创建图像截图，其中将包含所有的功能div的内容，没有其他内容。

你还可以对div-截图机制进行其他配置和自定义，请在这里查看

如果您想导出一个表，可以查看Shield UI Grid小部件提供的导出示例。

它是通过像这样扩展配置来实现的:

...
exportOptions: {
    proxy: "/filesaver/save",
    pdf: {
        fileName: "shieldui-export",
        author: "John Smith",
        dataSource: {
            data: gridData
        },
        readDataSource: true,
        header: {
            cells: [
                { field: "id", title: "ID", width: 50 },
                { field: "name", title: "Person Name", width: 100 },
                { field: "company", title: "Company Name", width: 100 },
                { field: "email", title: "Email Address" }
            ]
        }
    }
}
...