javascript - Html2pf/html2canvas/jsPDF 使用 Bootstrap 模式不显示边框

Question

我不确定是哪个必需的库引发了这个问题，或者它是否与 Bootstrap 有关，但我无法让输出 PDF 显示边框。

我试过增加边框的宽度，但它只是被忽略了，不知道该怎么做。

fiddle :https://jsfiddle.net/8q7ce58y/233/

我曾尝试在模态主体中使用 .clone()，但它只会渲染到窗口 View 上的内容。

代码:(最好检查 fiddle )

<div class="modal" tabindex="-1" role="dialog" aria-hidden="true">
  <div class="modal-dialog modal-dialog-centered modal-lg modal-a4" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <h5 class="modal-title">Doc Preview</h5>
        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                        <span aria-hidden="true">×</span>
                      </button>
      </div>
      <div class="modal-body">
        <div class="row m-0">
          <div class="col">
            <p align="center">Text<br></p>
          </div>
        </div>
        <div class="row m-0">
          <div class="col">
            <p><b><span style="font-size: 18px;">Field :</span></b> </p>
            <p>{Field_Name}
            </p>
          </div>
        </div>
        <h3 class="text-center p-2 m-0">Images</h3>
        <div class="row attachment-row m-0">
          <div class="col-6 text-center p-2">
            Image1
          </div>
          <div class="col-6 text-center p-2">
            Image2
          </div>
        </div>
      </div>
      <div class="modal-footer"><button class="ml-auto btn btn-primary ld-ext-right">Download PDF<div class="ld ld-ring ld-cycle running"></div></button></div>
    </div>
  </div>
</div>

CSS:

.modal-dialog.modal-a4{
    width: 8.27in !important;
    padding: 0;
}
.modal-a4 .modal-body>*:last-child {
  border-bottom: 10px solid black;
}

.modal-a4 .modal-body>* {
  border-left: 10px solid black;
  border-right: 10px solid black;
}

.modal-a4 .modal-body>*:not(.attachment-row) {
  border-top: 10px solid black;
}

Answer 1

我在 jsPDF 中使用了 html2canvas

function savePdf(){
    // body tag of html
    html2canvas(document.body).then(function(canvas) {
        var jpegUrl = canvas.toDataURL("image/jpeg");
        var doc = new jsPDF('l', 'mm', [318, 210]);
        doc.addImage(jpegUrl, 'JPEG', 10, 10);
        doc.save('sample-file.pdf');
    });
 } 

图书馆

<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.3.4/jspdf.min.js"></script>

下载 html2canvas: https://html2canvas.hertzen.com/

html2canvas.js
html2canvas.min.js

并通过按钮或输入调用函数:

<button id="cmd" onclick="savePDF()">generate PDF</button>