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

2022答:

从HTML元素生成PDF并提示保存文件:

import { jsPDF } from "jsPDF"

function generatePDF() {
  const doc = new jsPDF({ unit: 'pt' }) // create jsPDF object
  const pdfElement = document.getElementById('pdf') // HTML element to be converted to PDF

  doc.html(pdfElement, {
    callback: (pdf) => {
      pdf.save('MyPdfFile.pdf')
    },
    margin: 32, // optional: page margin
    // optional: other HTMLOptions
  })
}
<button onclick="generatePDF()">Save PDF</button>

...

不打印预览PDF文件:

doc.html(pdfElement, {
  callback: (pdf) => {
    const myPdfData = pdf.output('datauristring')
  }
})
<embed type="application/pdf" src={myPdfData} />

... 更多的html: https://github.com/parallax/jsPDF/blob/master/types/index.d.ts

其他回答

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

有人试过吗

    (function () {  
        var  
         form = $('.form'),  
         cache_width = form.width(),  
         a4 = [595.28, 841.89]; // for a4 size paper width and height  

        $('#create_pdf').on('click', function () {  
            $('body').scrollTop(0);  
            createPDF();  
        });  
        //create pdf  
        function createPDF() {  
            getCanvas().then(function (canvas) {  
                var  
                 img = canvas.toDataURL("image/png"),  
                 doc = new jsPDF({  
                     unit: 'px',  
                     format: 'a4'  
                 });  
                doc.addImage(img, 'JPEG', 20, 20);  
                doc.save('Bhavdip-html-to-pdf.pdf');  
                form.width(cache_width);  
            });  
        }  

        // create canvas object  
        function getCanvas() {  
            form.width((a4[0] * 1.33333) - 80).css('max-width', 'none');  
            return html2canvas(form, {  
                imageTimeout: 2000,  
                removeContainer: true  
            });  
        }  

    }());  

下面的方法对我的案例很有效。

隐藏页面的其他部分,如下例所示

@media print{
    body{
        -webkit-print-color-adjust: exact; // if you want to enable graphics
        color-adjust: exact !important; // if you want to enable graphics
        print-color-adjust: exact !important; // if you want to enable graphics
       
        * {
            visibility: hidden;
            margin:0;
            padding:0
        }
        .print_area, .print_area *{
            visibility: visible;
        }
        .print_area{
            margin: 0;
            align: center;
        }
        .pageBreak { 
           page-break-before : always; // If you want to skip next page
           page-break-inside: avoid;  // If you want to skip next page
         }
      }
    @page {
        size: A4; margin:0mm; // set page layout
        background-color: #fff;
    }
}

使用javascript的print函数来打印执行。

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

使用pdfMake.js和这个Gist。

(我在这里找到了Gist和html-to-pdfmake包的链接,但我现在没有使用这个包。)

在npm安装pdfmake后,将Gist保存在htmlToPdf.js中,我这样使用它:

const pdfMakeX = require('pdfmake/build/pdfmake.js');
const pdfFontsX = require('pdfmake-unicode/dist/pdfmake-unicode.js');
pdfMakeX.vfs = pdfFontsX.pdfMake.vfs;
import * as pdfMake from 'pdfmake/build/pdfmake';
import htmlToPdf from './htmlToPdf.js';

var docDef = htmlToPdf(`<b>Sample</b>`);
pdfMake.createPdf({content:docDef}).download('sample.pdf');

备注:

My use case is to create the relevant html from a markdown document (with markdown-it) and subsequently generating the pdf, and uploading its binary content (which I can get with pdfMake's getBuffer() function), all from the browser. The generated pdf turns out to be nicer for this kind of html than with other solutions I have tried. I am dissatisfied with the results I got from jsPDF.fromHTML() suggested in the accepted answer, as that solution gets easily confused by special characters in my HTML that apparently are interpreted as a sort of markup and totally mess up the resulting PDF. Using canvas based solutions (like the deprecated jsPDF.from_html() function, not to be confused with the one from the accepted answer) is not an option for me since I want the text in the generated PDF to be pasteable, whereas canvas based solutions generate bitmap based PDFs. Direct markdown to pdf converters like md-to-pdf are server side only and would not work for me. Using the printing functionality of the browser would not work for me as I do not want to display the generated PDF but upload its binary content.

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>