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Datatable带图片导出为PDF和Excel

javascriptjqueryexcelpdf
3

我需要生成一张表格并将其导出为html格式。我最初尝试使用php和phpexcel来完成这个任务，但我的客户服务器速度太慢了（有时我的表格有2500行）。现在，我正在尝试通过jquery/ajax获取表格并安装js插件进行导出。我目前正在使用datatables，我的代码如下：

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/datatables/1.10.15/css/dataTables.material.min.css" />

<script src="https://cdn.datatables.net/1.10.15/js/jquery.dataTables.min.js"></script>
<script src="https://cdn.datatables.net/buttons/1.3.1/js/dataTables.buttons.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jszip/3.1.3/jszip.min.js"></script>
<script src="//cdn.rawgit.com/bpampuch/pdfmake/0.1.27/build/pdfmake.min.js"></script>
<script src="//cdn.rawgit.com/bpampuch/pdfmake/0.1.27/build/vfs_fonts.js"></script>
<script src="//cdn.datatables.net/buttons/1.3.1/js/buttons.html5.min.js"></script>


  <style>img{max-width:100px;max-height:100px;}</style>

  <table class="table table-striped table-bordered table-hover zaawansowana_edycja " style="font-size:12px;">
    <thead class="konfiguratorHeaderTable">
        <tr class="obr getdataKrzeselko">
            <td></td>
            <td data-krzeselkoid="15">
                <img class="img-responsive" src="http://www.ikea.com/PIAimages/0238233_PE377690_S5.JPG">
            </td>
            <td data-krzeselkoid="3">
                <img class="img-responsive" src="http://www.ikea.com/PIAimages/0238233_PE377690_S5.JPG">
            </td>
            <td data-krzeselkoid="5">
                <img class="img-responsive" src="http://www.ikea.com/PIAimages/0238233_PE377690_S5.JPG">
            </td>
            <td data-krzeselkoid="4">
                <img class="img-responsive" src="http://www.ikea.com/PIAimages/0238233_PE377690_S5.JPG">
            </td>
            <td data-krzeselkoid="8">
                <img class="img-responsive" src="http://www.ikea.com/PIAimages/0238233_PE377690_S5.JPG">
            </td>
            <td data-krzeselkoid="2">
                <img class="img-responsive" src="http://www.ikea.com/PIAimages/0238233_PE377690_S5.JPG">
            </td>
            <td data-krzeselkoid="14">
                <img class="img-responsive" src="http://www.ikea.com/PIAimages/0238233_PE377690_S5.JPG">
            </td>
            <td data-krzeselkoid="17">
                <img class="img-responsive" src="http://www.ikea.com/PIAimages/0238233_PE377690_S5.JPG">
            </td>
            <td data-krzeselkoid="11">
                <img class="img-responsive" src="http://www.ikea.com/PIAimages/0238233_PE377690_S5.JPG">
            </td>
            <td data-krzeselkoid="12">
                <img class="img-responsive" src="http://www.ikea.com/PIAimages/0238233_PE377690_S5.JPG">
            </td>
        </tr>
        <tr>
            <td></td>
            <td>
                t1 </td>
            <td>
                t2 </td>
            <td>
                t2 </td>
            <td>
                t3 </td>
            <td>
                t4 </td>
            <td>
                twer </td>
            <td>
                gsdf </td>
            <td>
                dfst </td>
            <td>
                fd </td>
            <td>
                ef </td>
        </tr>
    </thead>
    <tbody id="insertHereTbodyContent" style="height: 263px;">
        <tr class="konfiguratorAttr" key="39|39">
            <td> asdasd </td>
            <td class="inputRow" konfigurator="1" key="39|39">
                <input type="hidden" name="produkt[39|39][krzeselka][436][id_krzesla]" value="15"> 72.4000 </td>
            <td class="inputRow" konfigurator="1" key="39|39">
                <input type="hidden" name="produkt[39|39][krzeselka][437][id_krzesla]" value="3"> 38.4000 </td>
            <td class="inputRow" konfigurator="1" key="39|39">
                <input type="hidden" name="produkt[39|39][krzeselka][4495452651249][id_krzesla]" value="5"> 41.0000 </td>
            <td class="inputRow" konfigurator="1" key="39|39">
                <input type="hidden" name="produkt[39|39][krzeselka][4495452651306][id_krzesla]" value="4"> 29.0000 </td>
            <td class="inputRow" konfigurator="1" key="39|39">
                <input type="hidden" name="produkt[39|39][krzeselka][4495452651363][id_krzesla]" value="8"> 40.0000 </td>
            <td class="inputRow" konfigurator="1" key="39|39">
                <input type="hidden" name="produkt[39|39][krzeselka][4495452651417][id_krzesla]" value="2"> 30.9100 </td>
            <td class="inputRow" konfigurator="1" key="39|39">
                <input type="hidden" name="produkt[39|39][krzeselka][4495452651603][id_krzesla]" value="14"> 36.0000 </td>
            <td class="inputRow" konfigurator="1" key="39|39">
                <input type="hidden" name="produkt[39|39][krzeselka][4495452651681][id_krzesla]" value="17"> 23.0000 </td>
            <td class="inputRow" konfigurator="1" key="39|39">
                <input type="hidden" name="produkt[39|39][krzeselka][4495452651735][id_krzesla]" value="11"> 39.6050 </td>
            <td class="inputRow" konfigurator="1" key="39|39">
                <input type="hidden" name="produkt[39|39][krzeselka][4495452651780][id_krzesla]" value="12"> 32.0000 </td>
        </tr>
        <tr class="konfiguratorAttr" key="2|39">
            <td> asd / zxcvz </td>
            <td class="inputRow" konfigurator="1" key="2|39">
                <input type="hidden" name="produkt[2|39][krzeselka][438][id_krzesla]" value="15"> 69.3710 </td>
            <td class="inputRow" konfigurator="1" key="2|39">
                <input type="hidden" name="produkt[2|39][krzeselka][439][id_krzesla]" value="3"> 15.0000 </td>
            <td class="inputRow" konfigurator="1" key="2|39">
                <input type="hidden" name="produkt[2|39][krzeselka][4495452652035][id_krzesla]" value="5"> 41.0000 </td>
            <td class="inputRow" konfigurator="1" key="2|39">
                <input type="hidden" name="produkt[2|39][krzeselka][4495452652101][id_krzesla]" value="4"> 29.0000 </td>
            <td class="inputRow" konfigurator="1" key="2|39">
                <input type="hidden" name="produkt[2|39][krzeselka][4495452652239][id_krzesla]" value="8"> 40.0000 </td>
            <td class="inputRow" konfigurator="1" key="2|39">
                <input type="hidden" name="produkt[2|39][krzeselka][4495452652254][id_krzesla]" value="2"> 30.9100 </td>
            <td class="inputRow" konfigurator="1" key="2|39">
                <input type="hidden" name="produkt[2|39][krzeselka][4495452652401][id_krzesla]" value="14"> 36.0000 </td>
            <td class="inputRow" konfigurator="1" key="2|39">
                <input type="hidden" name="produkt[2|39][krzeselka][4495452652392][id_krzesla]" value="17"> 23.0000 </td>
            <td class="inputRow" konfigurator="1" key="2|39">
                <input type="hidden" name="produkt[2|39][krzeselka][4495452652515][id_krzesla]" value="11"> 37.3748 </td>
            <td class="inputRow" konfigurator="1" key="2|39">
                <input type="hidden" name="produkt[2|39][krzeselka][4495452652524][id_krzesla]" value="12"> 32.0000 </td>
        </tr>
    </tbody>
    <tfoot>
        <tr>
            <td></td>
            <td>
                <button class="dodajTkanineDoKrzeselka" href="/excel/show-konfiguruj-excel-raw-table?id=8">+</button>
            </td>
            <td>
                <button class="dodajTkanineDoKrzeselka" href="/excel/show-konfiguruj-excel-raw-table?id=8">+</button>
            </td>
            <td>
                <button class="dodajTkanineDoKrzeselka" href="/excel/show-konfiguruj-excel-raw-table?id=8">+</button>
            </td>
            <td>
                <button class="dodajTkanineDoKrzeselka" href="/excel/show-konfiguruj-excel-raw-table?id=8">+</button>
            </td>
            <td>
                <button class="dodajTkanineDoKrzeselka" href="/excel/show-konfiguruj-excel-raw-table?id=8">+</button>
            </td>
            <td>
                <button class="dodajTkanineDoKrzeselka" href="/excel/show-konfiguruj-excel-raw-table?id=8">+</button>
            </td>
            <td>
                <button class="dodajTkanineDoKrzeselka" href="/excel/show-konfiguruj-excel-raw-table?id=8">+</button>
            </td>
            <td>
                <button class="dodajTkanineDoKrzeselka" href="/excel/show-konfiguruj-excel-raw-table?id=8">+</button>
            </td>
            <td>
                <button class="dodajTkanineDoKrzeselka" href="/excel/show-konfiguruj-excel-raw-table?id=8">+</button>
            </td>
            <td>
                <button class="dodajTkanineDoKrzeselka" href="/excel/show-konfiguruj-excel-raw-table?id=8">+</button>
            </td>
        </tr>
    </tfoot>
</table>

  <script>

    $('table').DataTable( {
        dom: 'Bfrtip',
        buttons: [
            {
                extend: 'excelHtml5',
                title: 'Data export'
            },
            {
                extend: 'pdfHtml5',
                title: 'Data export'
            }
        ]
    } );
  </script>

</body>
</html>

工作示例：https://jsbin.com/senufanozo/edit?html,output

这个代码可以很好地处理2500行数据，但是我无法导出图片。在PDF和Excel中需要图片。我该如何导出呢？

此外，如何将PDF页面旋转为横向？

2个回答
2
这可能是一个晚回答，不过我会带你找到解决方案。
首先，如果您使用的是 pdfHtml5，为了将 PDF 的方向从纵向改为横向，您需要按照以下方式定义方向：orientation: 'landscape'，这将帮助您以横向导出 PDF 文件。
要将图像与 PDF 一起导出，需要进行自定义操作，并且要对图像进行编码，您不能将图像作为普通的 HTML 标签导出，而应该先将其编码为base64 编码器。
$image = 'http://localhost/img.jpg';

 // Read image path, convert to base64 encoding
 $type = pathinfo($image, PATHINFO_EXTENSION);
 $data = file_get_contents($image);

 $imgData = base64_encode($data);

 // Format the image SRC:  data:{mime};base64,{data};
 $src = 'data:image/' . $type . ';base64,'.$imgData;

在对图像进行编码后，您需要按照以下方式自定义PDF导出：

将"Original Answer"翻译为"最初的回答"

        {
            extend: 'pdfHtml5',
            orientation: 'landscape',
            customize: function (doc) {
               if (doc) {
                    for (var i = 1; i < doc.content[1].table.body.length; i++) {
                        doc.content[1].table.body[i][1] = {
                            image: '<?php echo $src; ?>,
                        };
                    }
                }
            },
            exportOptions: {
                stripHtml: false
        }
        }

这应该能解决问题。

这个方法会起作用。

这很有帮助！但是，在导出时它没有为我循环遍历每个图像：PDF文件中每一行都包含相同的图像。可能出了什么问题？ - touto
1
      extend: 'pdfHtml5',
      customize: function(doc) {
           //find paths of all images, already in base64 format
           var arr2 = $('.img-fluid').map(function(){
               return this.src;
           }).get();
                 
           for (var i = 0, c = 1; i < arr2.length; i++, c++) {
              doc.content[1].table.body[c][6] = {
                image: arr2[i],
                width: 100
              }
            }
          },   
          exportOptions: {
             columns: ':visible',
             stripHtml: true,
          }
       },
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