Question

我正在使用django并尝试呈现pdf发票，pdf已成功生成，但是图像不在pdf中。

实际上，我想添加条形码图像，因此我动态生成了一个.svg文件，但是不知道如何将其放入pdf文件中。

这是我在做什么..

from io import BytesIO
from django.http import HttpResponse
from django.template.loader import get_template

from xhtml2pdf import pisa

def render_to_pdf(template_src, context_dict={}):
    template = get_template(template_src)
    html  = template.render(context_dict)
    result = BytesIO()
    pdf = pisa.pisaDocument(BytesIO(html.encode("ISO-8859-1")), result)
    if not pdf.err:
        return HttpResponse(result.getvalue(), content_type='application/pdf')
    return None

html-

  <body>
    <div class="container-fluid">
      <div class="row">
        <div class="col-6">
          <div class="row">
            <div class="col-12">
              <span>
                {{ package_no_barcode }}
                <br>
                {{ package.package_no }}
                ....

视图-

class GenerateInvoicePdf(View):
    def get(self, request, *args, **kwargs):
        package = Package.objects.get(package_no=request.GET.get('package'))
        address = package.purchase.order_product.delivery_location
        CODE128 = barcode.get_barcode_class('code128')
        package_no_barcode = CODE128(u'{pkg_no}'.format(pkg_no=package.package_no))
        if request.user.display_username == seller.display_username:
            data = {
                 'package':package,
                 'address':address,
                 'package_no_barcode':package_no_barcode,
             }
            pdf = render_to_pdf('pdf/invoice.html', data)
            if pdf:
                response = HttpResponse(pdf, content_type='application/pdf')
                filename = "Invoice_%s.pdf" %(package)
                content = "inline; filename='%s'" %(filename)
                download = request.GET.get("download")
                if download:
                    content = "attachment; filename='%s'" %(filename)
                response['Content-Disposition'] = content
                return response
        return HttpResponse("Not found")

我也尝试了cid-<img src="cid:{{ package_no_barcode }}" alt="{{ package.package_no }}">

生成的svg示例

CODE128 = barcode.get_barcode_class('code128')
package_no_barcode = CODE128(u'PLAI73664PJHS')
package_no_barcode.save('PSKK')

生成svg-

<svg xmlns="http://www.w3.org/2000/svg" height="23.000mm" version="1.1" width="40.000mm">
    <!--Autogenerated with python-barcode 0.9.0-->
    <g id="barcode_group">
        <rect height="100%" style="fill:white" width="100%"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="2.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="2.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="3.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.400mm" x="3.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="3.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.800mm" x="3.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.600mm" x="4.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="5.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.600mm" x="5.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="6.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="6.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="6.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="6.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.600mm" x="7.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="7.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="8.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.600mm" x="8.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="8.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="9.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="9.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="9.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.600mm" x="9.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="10.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.600mm" x="10.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="11.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.600mm" x="11.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="12.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.600mm" x="12.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="13.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="13.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="13.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="13.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.600mm" x="13.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="14.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.800mm" x="14.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="15.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="15.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.800mm" x="15.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="16.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="17.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="17.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.400mm" x="17.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="17.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.400mm" x="18.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="18.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.800mm" x="18.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="19.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="19.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="20.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="20.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.800mm" x="20.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="21.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.600mm" x="21.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="22.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="22.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.400mm" x="22.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="23.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.400mm" x="23.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.600mm" x="23.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="24.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.600mm" x="24.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="25.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.600mm" x="25.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="25.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="26.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="26.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="26.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="26.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="27.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="27.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.600mm" x="27.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.600mm" x="28.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="28.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.600mm" x="29.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="29.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="30.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="30.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.600mm" x="30.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="31.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="31.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.600mm" x="31.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="32.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="32.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.600mm" x="32.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="33.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.400mm" x="33.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="34.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="34.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.600mm" x="34.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.400mm" x="35.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="35.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.600mm" x="35.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.600mm" x="36.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="37.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="37.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="37.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="37.740mm" y="1.000mm"/>
        <text style="fill:black;font-size:10pt;text-anchor:middle;" x="20.340mm" y="21.000mm">PLAI73664PJHS</text>
    </g>
</svg>

更新-使用.render，-'package_no_barcode':package_no_barcode.render，我可以获取svg代码，但不能获取html-

b'<?xml version="1.0" encoding="UTF-8"?>\r\n<!DOCTYPE svg\r\n PUBLIC \'-//W3C//DTD SVG 1.1//EN\'\r\n
\'http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\'>\r\n<svg height="23.000mm" version="1.1" width="38.000mm" xmlns="http://www.w3.org/2000/svg">\r\n
<!--Autogenerated with python-barcode 0.9.0-->\r\n <g id="barcode_group">\r\n <rect height="100%" style="fill:white" width="100%"/>\r\n <rect
height="15.000mm" style="fill:black;" width="0.400mm" x="2.540mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.200mm"
x="2.940mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;" width="0.200mm" x="3.140mm" y="1.000mm"/>\r\n <rect height="15.000mm"
style="fill:white;" width="0.400mm" x="3.340mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;" width="0.200mm" x="3.740mm"
y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.800mm" x="3.940mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;"
width="0.400mm" x="4.740mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.200mm" x="5.140mm" y="1.000mm"/>\r\n <rect
height="15.000mm" style="fill:black;" width="0.600mm" x="5.340mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.200mm"
x="5.940mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;" width="0.600mm" x="6.140mm" y="1.000mm"/>\r\n <rect height="15.000mm"
style="fill:white;" width="0.200mm" x="6.740mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;" width="0.600mm" x="6.940mm"
y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.600mm" x="7.540mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;"
width="0.200mm" x="8.140mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.200mm" x="8.340mm" y="1.000mm"/>\r\n <rect
height="15.000mm" style="fill:black;" width="0.400mm" x="8.540mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.200mm"
x="8.940mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;" width="0.600mm" x="9.140mm" y="1.000mm"/>\r\n <rect height="15.000mm"
style="fill:white;" width="0.600mm" x="9.740mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;" width="0.200mm" x="10.340mm"
y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.200mm" x="10.540mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;"
width="0.400mm" x="10.740mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.200mm" x="11.140mm" y="1.000mm"/>\r\n <rect
height="15.000mm" style="fill:black;" width="0.600mm" x="11.340mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.200mm"
x="11.940mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;" width="0.200mm" x="12.140mm" y="1.000mm"/>\r\n <rect height="15.000mm"
style="fill:white;" width="0.600mm" x="12.340mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;" width="0.400mm" x="12.940mm"
y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.200mm" x="13.340mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;"
width="0.200mm" x="13.540mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.600mm" x="13.740mm" y="1.000mm"/>\r\n <rect
height="15.000mm" style="fill:black;" width="0.400mm" x="14.340mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.200mm"
x="14.740mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;" width="0.600mm" x="14.940mm" y="1.000mm"/>\r\n <rect height="15.000mm"
style="fill:white;" width="0.200mm" x="15.540mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;" width="0.600mm" x="15.740mm"
y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.400mm" x="16.340mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;"
width="0.200mm" x="16.740mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.200mm" x="16.940mm" y="1.000mm"/>\r\n <rect
height="15.000mm" style="fill:black;" width="0.400mm" x="17.140mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.400mm"
x="17.540mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;" width="0.400mm" x="17.940mm" y="1.000mm"/>\r\n <rect height="15.000mm"
style="fill:white;" width="0.400mm" x="18.340mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;" width="0.200mm" x="18.740mm"
y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.400mm" x="18.940mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;"
width="0.600mm" x="19.340mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.200mm" x="19.940mm" y="1.000mm"/>\r\n <rect
height="15.000mm" style="fill:black;" width="0.400mm" x="20.140mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.600mm"
x="20.540mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;" width="0.200mm" x="21.140mm" y="1.000mm"/>\r\n <rect height="15.000mm"
style="fill:white;" width="0.200mm" x="21.340mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;" width="0.200mm" x="21.540mm"
y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.600mm" x="21.740mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;"
width="0.600mm" x="22.340mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.600mm" x="22.940mm" y="1.000mm"/>\r\n <rect
height="15.000mm" style="fill:black;" width="0.200mm" x="23.540mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.200mm"
x="23.740mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;" width="0.400mm" x="23.940mm" y="1.000mm"/>\r\n <rect height="15.000mm"
style="fill:white;" width="0.200mm" x="24.340mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;" width="0.200mm" x="24.540mm"
y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.600mm" x="24.740mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;"
width="0.600mm" x="25.340mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.200mm" x="25.940mm" y="1.000mm"/>\r\n <rect
height="15.000mm" style="fill:black;" width="0.400mm" x="26.140mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.200mm"
x="26.540mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;" width="0.200mm" x="26.740mm" y="1.000mm"/>\r\n <rect height="15.000mm"
style="fill:white;" width="0.400mm" x="26.940mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;" width="0.600mm" x="27.340mm"
y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.200mm" x="27.940mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;"
width="0.400mm" x="28.140mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.400mm" x="28.540mm" y="1.000mm"/>\r\n <rect
height="15.000mm" style="fill:black;" width="0.600mm" x="28.940mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.200mm"
x="29.540mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;" width="0.200mm" x="29.740mm" y="1.000mm"/>\r\n <rect height="15.000mm"
style="fill:white;" width="0.400mm" x="29.940mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;" width="0.400mm" x="30.340mm"
y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.400mm" x="30.740mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;"
width="0.400mm" x="31.140mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.600mm" x="31.540mm" y="1.000mm"/>\r\n <rect
height="15.000mm" style="fill:black;" width="0.200mm" x="32.140mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.600mm"
x="32.340mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;" width="0.200mm" x="32.940mm" y="1.000mm"/>\r\n <rect height="15.000mm"
style="fill:white;" width="0.200mm" x="33.140mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;" width="0.400mm" x="33.340mm"
y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.600mm" x="33.740mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;"
width="0.600mm" x="34.340mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.200mm" x="34.940mm" y="1.000mm"/>\r\n <rect
height="15.000mm" style="fill:black;" width="0.200mm" x="35.140mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:white;" width="0.200mm"
x="35.340mm" y="1.000mm"/>\r\n <rect height="15.000mm" style="fill:black;" width="0.400mm" x="35.540mm" y="1.000mm"/>\r\n <text
style="fill:black;font-size:10pt;text-anchor:middle;" x="19.240mm" y="21.000mm">UXXWL94HXO08</text>\r\n </g>\r\n</svg>\r\n'

如何使用此代码制作svg图片？

Answer 1

要获取在html中呈现的svg，您必须按原样获取svg文本（文本输出），然后将其放入模板中，而无需使用<img>标签。

<body>
    <div class="container-fluid">
      <div class="row">
        <div class="col-6">
          <div class="row">
            <div class="col-12">
            <svg xmlns="http://www.w3.org/2000/svg" height="23.000mm" version="1.1" width="40.000mm">
    <!--Autogenerated with python-barcode 0.9.0-->
    <g id="barcode_group">
        <rect height="100%" style="fill:white" width="100%"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="2.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="2.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="3.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.400mm" x="3.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="3.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.800mm" x="3.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.600mm" x="4.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="5.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.600mm" x="5.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="6.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="6.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="6.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="6.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.600mm" x="7.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="7.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="8.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.600mm" x="8.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="8.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="9.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="9.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="9.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.600mm" x="9.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="10.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.600mm" x="10.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="11.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.600mm" x="11.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="12.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.600mm" x="12.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="13.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="13.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="13.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="13.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.600mm" x="13.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="14.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.800mm" x="14.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="15.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="15.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.800mm" x="15.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="16.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="17.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="17.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.400mm" x="17.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="17.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.400mm" x="18.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="18.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.800mm" x="18.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="19.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="19.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="20.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="20.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.800mm" x="20.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="21.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.600mm" x="21.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="22.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="22.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.400mm" x="22.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="23.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.400mm" x="23.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.600mm" x="23.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="24.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.600mm" x="24.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="25.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.600mm" x="25.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="25.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="26.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="26.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="26.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="26.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="27.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="27.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.600mm" x="27.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.600mm" x="28.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="28.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.600mm" x="29.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="29.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="30.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="30.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.600mm" x="30.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="31.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="31.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.600mm" x="31.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="32.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="32.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.600mm" x="32.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="33.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.400mm" x="33.740mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="34.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="34.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.600mm" x="34.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.400mm" x="35.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="35.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.600mm" x="35.940mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.600mm" x="36.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="37.140mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.200mm" x="37.340mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:white;" width="0.200mm" x="37.540mm" y="1.000mm"/>
        <rect height="15.000mm" style="fill:black;" width="0.400mm" x="37.740mm" y="1.000mm"/>
        <text style="fill:black;font-size:10pt;text-anchor:middle;" x="20.340mm" y="21.000mm">PLAI73664PJHS</text>
    </g>
</svg>
            <span></span>
            </div>
          </div>
        </div>
      </div>
    </div>
 </body>

在代码段中，您看到了已经渲染的html，但是您需要找到获取该文本并将其作为上下文变量传递到模板的方法，就像您使用package_no_barcode一样。

编辑

我已经使用jinja2和flask进行了测试，但是解决方案应该与django及其模板引擎相似。

首先，确保在服务器代码中以字符串形式获取svg代码。然后，将其作为上下文变量传递到模板，就像我之前提到的那样。

在模板中，您需要“评估”之前传递的变量中的html或svg代码。为此，我使用了safe过滤器。

<body>
    <div class="container-fluid">
      <div class="row">
        <div class="col-6">
          <div class="row">
            <div class="col-12">
            {{ barcode | safe }}
            <span></span>
            </div>
          </div>
        </div>
      </div>
    </div>
 </body>

结果我得到了：

但是我想使用django的默认模板引擎，您需要使用escape内置过滤器来获得类似的内容。

类似的问题，但使用了flask和jinja2：Passing HTML to template using Flask/Jinja2

html模板转换为带有图像的pdf

1 个答案: