创建多页PDF文档jsPDF

时间:2017-02-15 13:10:31

标签: javascript jspdf html2pdf

很长一段时间以来,我一直试图用jsPDF创建一个多页PDF。

我有一个包含多个DIV的HTML文档

<div id="pdfContainer">
    <div id="page1">Content page 1</div>
    <div id="page2">Content page 2</div>
    <div id="page3">Content page 3</div>
    <div id="page4">Content page 4</div>
</div>

我用html2canvas尝试过,但更喜欢html2pdf (我有html2pdf.js)。

 var doc = new jsPDF();
    var elementHandler = {
        '#page1': function (element, renderer) {
            return true;
        },
        '#page2': function (element, renderer) {
            return true;
        },
        '#page3': function (element, renderer) {
            return true;
        },
        '#page4': function (element, renderer) {
            return true;
        }
    };
    var source = window.document.getElementById("pdfcontainer");
    doc.fromHTML($('#pdfcontainer').get(0), 15, 15, {
        'width': 170,
        'elementHandlers': specialElementHandlers
    });
    doc.output('dataurlnewwindow', {});
}

上面的代码是我的最后一次尝试,但会产生一个空PDF。

我也用过

var html = $('#page1').html();
    html2pdf(html, pdf, function(pdf) {
        pdf.output('dataurlnewwindow');
    });

哪个有效,但仅适用于第1页

有没有简单的方法让这项工作?或者我必须逐页制作PDF页面

2 个答案:

答案 0 :(得分:3)

使用html2pdf插件的简单示例:

<script>
    var source = window.document.getElementById("report");

    var pdf = new jsPDF('p', 'pt', 'a4');
    var canvas = pdf.canvas;
    canvas.height = 72 * 11;
    canvas.width = 72 * 8.5;
    //page break
    pdf.context2d.pageWrapYEnabled = true;

    html2pdf(source, pdf, function (pdf) {
                var iframe = document.createElement('iframe');
                iframe.setAttribute('style', 'position:fixed;right:0; top:0; bottom:0; height:100%; width:100%');
                document.body.appendChild(iframe);
                iframe.src = pdf.output('datauristring');
            }
    );
</script>

答案 1 :(得分:1)

我们可以创建多个页面的PDF,但是用HTML分隔HTML格式的页面分区

然后我们可以将 jsPDF html2canvas 结合起来,如下所示

    var pdf = new jsPDF('p', 'pt', [580, 630]);

    html2canvas($(".page1")[0], {
        onrendered: function(canvas) {
            document.body.appendChild(canvas);
            var ctx = canvas.getContext('2d');
            var imgData = canvas.toDataURL("image/png", 1.0);
            var width = canvas.width;
            var height = canvas.clientHeight;
            pdf.addImage(imgData, 'PNG', 20, 20, (width - 10), (height));

        }
    });
    html2canvas($(".page2")[0], {
        allowTaint: true,
        onrendered: function(canvas) {
            var ctx = canvas.getContext('2d');
            var imgData = canvas.toDataURL("image/png", 1.0);
            var htmlH = $(".page2").height() + 100;
            var width = canvas.width;
            var height = canvas.clientHeight;
            pdf.addPage(580, htmlH);
            pdf.addImage(imgData, 'PNG', 20, 20, (width - 40), (height));
        }
    });
    html2canvas($(".page3")[0], {
        allowTaint: true,
        onrendered: function(canvas) {
            var ctx = canvas.getContext('2d');
            var imgData = canvas.toDataURL("image/png", 1.0);
            var htmlH = $(".page2").height() + 100;
            var width = canvas.width;
            var height = canvas.clientHeight;
            pdf.addPage(580, htmlH);
            pdf.addImage(imgData, 'PNG', 20, 20, (width - 40), (height));
        }
    });
    setTimeout(function() {

        //jsPDF code to save file
        pdf.save('sample.pdf');
    }, 0);

这里给出了完整的教程http://freakyjolly.com/create-multipage-html-pdf-jspdf-html2canvas/