我有以下html代码:

<!DOCTYPE html>
<html>
    <body>
        <p>don't print this to pdf</p>
        <div id="pdf">
            <p><font size="3" color="red">print this to pdf</font></p>
        </div>
    </body>
</html>

所有我想做的是打印到pdf,无论在div中找到一个id为“pdf”。这必须使用JavaScript来完成。"pdf"文件会自动下载,文件名为"foobar.pdf"

我一直在使用jspdf来做到这一点,但它唯一的功能是“文本”,只接受字符串值。我想提交HTML到jspdf,而不是文本。


当前回答

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');
    }
  });
}

其他回答

我能够得到jsPDF打印动态创建的表从一个div。

$(document).ready(function() {

        $("#pdfDiv").click(function() {

    var pdf = new jsPDF('p','pt','letter');
    var specialElementHandlers = {
    '#rentalListCan': function (element, renderer) {
        return true;
        }
    };

    pdf.addHTML($('#rentalListCan').first(), function() {
        pdf.save("caravan.pdf");
    });
    });
});

工作伟大的Chrome和Firefox…格式在IE中都被放大了。

我还列出了以下内容:

<script src="js/jspdf.js"></script>
    <script src="js/jspdf.plugin.from_html.js"></script>
    <script src="js/jspdf.plugin.addhtml.js"></script>
    <script src="//mrrio.github.io/jsPDF/dist/jspdf.debug.js"></script>
    <script src="http://html2canvas.hertzen.com/build/html2canvas.js"></script>
    <script type="text/javascript" src="./libs/FileSaver.js/FileSaver.js"></script>
    <script type="text/javascript" src="./libs/Blob.js/Blob.js"></script>
    <script type="text/javascript" src="./libs/deflate.js"></script>
    <script type="text/javascript" src="./libs/adler32cs.js/adler32cs.js"></script>

    <script type="text/javascript" src="js/jspdf.plugin.addimage.js"></script>
    <script type="text/javascript" src="js/jspdf.plugin.sillysvgrenderer.js"></script>
    <script type="text/javascript" src="js/jspdf.plugin.split_text_to_size.js"></script>
    <script type="text/javascript" src="js/jspdf.plugin.standard_fonts_metrics.js"></script>

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');
    }
  });
}

jsPDF能够使用插件。为了使它能够打印HTML,你必须包括某些插件,因此必须做以下工作:

登录https://github.com/MrRio/jsPDF下载最新版本。 在你的项目中包含以下脚本: jspdf.js jspdf.plugin.from_html.js jspdf.plugin.split_text_to_size.js jspdf.plugin.standard_fonts_metrics.js

如果希望忽略某些元素,则必须用ID标记它们,然后可以在jsPDF的特殊元素处理程序中忽略该ID。因此你的HTML应该是这样的:

<!DOCTYPE html>
<html>
  <body>
    <p id="ignorePDF">don't print this to pdf</p>
    <div>
      <p><font size="3" color="red">print this to pdf</font></p>
    </div>
  </body>
</html>

然后使用以下JavaScript代码在弹出窗口中打开创建的PDF:

var doc = new jsPDF();          
var elementHandler = {
  '#ignorePDF': function (element, renderer) {
    return true;
  }
};
var source = window.document.getElementsByTagName("body")[0];
doc.fromHTML(
    source,
    15,
    15,
    {
      'width': 180,'elementHandlers': elementHandler
    });

doc.output("dataurlnewwindow");

对我来说,这创建了一个漂亮而整洁的PDF,只包括一行“打印此PDF”。

请注意,特殊元素处理程序只处理当前版本中的id,这在GitHub问题中也有说明。州:

因为匹配是针对节点树中的每个元素进行的,所以我希望尽可能快地进行匹配。在这种情况下,它意味着“只匹配元素id”。元素id仍然是jQuery风格的“#id”,但这并不意味着支持所有的jQuery选择器。

因此,将'#ignorePDF'替换为'类选择器'。ignorePDF'没有为我工作。相反,你必须为每个元素添加相同的处理程序,你想忽略这些元素,比如:

var elementHandler = {
  '#ignoreElement': function (element, renderer) {
    return true;
  },
  '#anotherIdToBeIgnored': function (element, renderer) {
    return true;
  }
};

从示例中还指出,可以选择像'a'或'li'这样的标签。不过,对于大多数用例来说,这可能有点不受限制:

我们支持特殊的元素处理程序。用jquery方式注册它们 ID选择器用于ID或节点名称。(“#iAmID”,“div”,“span”等) 不支持任何其他类型的选择器(class, of 化合物)此时。

要添加的一个非常重要的事情是,您丢失了所有的样式信息(CSS)。幸运的是,jsPDF能够很好地格式化h1、h2、h3等,这对我的目的来说已经足够了。此外,它只打印文本节点中的文本,这意味着它不会打印文本区域等的值。例子:

<body>
  <ul>
    <!-- This is printed as the element contains a textnode -->        
    <li>Print me!</li>
  </ul>
  <div>
    <!-- This is not printed because jsPDF doesn't deal with the value attribute -->
    <input type="textarea" value="Please print me, too!">
  </div>
</body>

如果你需要下载一个特定页面的PDF文件,只需添加这样的按钮

<h4 onclick="window.print();"> Print </h4>

使用window.print()打印整个页面,而不仅仅是一个div

这是一个简单的解决方案。这对我很有用。你可以使用javascript打印概念,并简单地将其保存为pdf。

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
    <script type="text/javascript">
        $("#btnPrint").live("click", function () {
            var divContents = $("#dvContainer").html();
            var printWindow = window.open('', '', 'height=400,width=800');
            printWindow.document.write('<html><head><title>DIV Contents</title>');
            printWindow.document.write('</head><body >');
            printWindow.document.write(divContents);
            printWindow.document.write('</body></html>');
            printWindow.document.close();
            printWindow.print();
        });
    </script>
</head>
<body>
    <form id="form1">
    <div id="dvContainer">
        This content needs to be printed.
    </div>
    <input type="button" value="Print Div Contents" id="btnPrint" />
    </form>
</body>
</html>