首页 > 解决方案 > 如何将SVG图像添加到pdf

问题描述

当有人单击生成 pdf 按钮时,我想生成一个 pdf。此 pdf 包含与用户在网页上的图像中突出显示的内容相对应的一堆正方形的图像。每当我尝试包含 svg 时,我都会得到一个空白的 pdf。有什么帮助吗?

试用版.html:

    <?php
    use Dompdf\Dompdf;

    use PHPMailer\PHPMailer\PHPMailer;
    use PHPMailer\PHPMailer\SMTP;
    use PHPMailer\PHPMailer\Exception;
    
    

    if(isset($_POST['send']))
    {

     $output = ' <!DOCTYPE html>
                <svg  width="564" height="409" >
                    <image
                        href="https://media.geeksforgeeks.org/wp-content/uploads/unique-rectangles-formed-using- 
                    n-unit-squares.png"
                        width="564"
                        height="409"
                    />
                    <polygon title="1" points="21,385 24,309 100,309 101,385" />
                    <polygon title="2" points="102,305 23,304 23,228 101,227" />
                    <polygon title="3" points="103,225 26,228 25,149 99,151" />
                    <polygon title="4" points="103,147 102,65 25,70 23,147" />
                </svg>';
      //   $output .= '<img src="data:image/svg+xml;base64,'.base64_encode($svg).'"  width="100" height="100" />';

     require 'C:\Users\Main\vendor/autoload.php';  

     $cart_body='<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Squares</title></head><body><p>Test Printing...</p></body></html>';
             $dompdf = new Dompdf();
             $dompdf->load_html($output);//body -> html content which needs to be converted as pdf..
             $dompdf->render();
             $dompdf->stream("sample.pdf");

     }?>

脚本.js:

    function handleSVGClick(event) {
    if (event.target.tagName === "polygon") {
      event.target.style.fill = `hsl(${Math.random() * 360}, 90%, 60%)`;
    }
  }

样式.css:

    polygon {
    stroke-width: 2px;
    stroke: #333;
    fill: transparent;
  }

标签: javascriptphpcsspdfsvg

解决方案


试试这样:

试用版.html:

    <?php
    require 'C:/Users/Main/vendor/autoload.php';  

    use Dompdf\Dompdf;

    use PHPMailer\PHPMailer\PHPMailer;
    use PHPMailer\PHPMailer\SMTP;
    use PHPMailer\PHPMailer\Exception;
    
    

    if(isset($_POST['send']))
    {

     //any embedded images need to be base64 encoded as DataURIs
     $svg = '<?xml version="1.0" encoding="UTF-8" standalone="no"?>
                <svg xmlns="http://www.w3.org/2000/svg" width="564" height="409" >
                    <image
                        href="data:image/jpg;base64,' . base64_encode(file_get_contents('https://media.geeksforgeeks.org/wp-content/uploads/unique-rectangles-formed-using-n-unit-squares.png')) . '"
                        width="564"
                        height="409"
                    />
                    <polygon title="1" points="21,385 24,309 100,309 101,385" />
                    <polygon title="2" points="102,305 23,304 23,228 101,227" />
                    <polygon title="3" points="103,225 26,228 25,149 99,151" />
                    <polygon title="4" points="103,147 102,65 25,70 23,147" />
                </svg>';

     //convert SVG image to an <img /> element with the SVG image as a DataURI
     $output = '<img src="data:image/svg+xml;base64,'.base64_encode($svg).'"  width="564" height="409" />';

     $cart_body='<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Squares</title></head><body><p>Test Printing...</p></body></html>';
     $dompdf = new Dompdf();
     $dompdf->load_html($output); //body -> html content which needs to be converted as pdf..
     $dompdf->render();
     $dompdf->stream("sample.pdf");

     }?>

脚本.js:

  function handleSVGClick(event) {
    if (event.target.tagName === "polygon") {
      event.target.style.fill = `hsl(${Math.random() * 360}, 90%, 60%)`;
    }
  }

样式.css:

  polygon {
    stroke-width: 2px;
    stroke: #333;
    fill: transparent;
  }

嵌入“原始” SVG (<path...>) 还不能正常工作,您需要链接到外部 SVG 文件,或者使用这样的 DataURI:

$html = '<img src="data:image/svg+xml;base64,' . base64_encode($svg) . '" ...>';

上面的代码$svg用作独立的 SVG 图像(而不是嵌入 HTML 中的 SVG 图像)。然后它将其编码为<img />应呈现为 PDF 的元素的 DataURI。由于 SVG 图像本身包含嵌入图像,因此也需要将其编码为 DataURI

PDF 中的图像应如下所示:

在此处输入图像描述


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