我正在使用网络上的标准示例（http://www.20seven.org/journal/2008/11/pdf- Generation-with-pisa-in-django.html）来转换 django 视图/模板转换为 PDF。
是否有一种“简单”的方法可以在模板中包含图像（来自 URL 或服务器上的引用），以便它们显示在 PDF 上？
我的图像正常工作了。 代码如下：
from django.http import HttpResponse
from django.template.loader import render_to_string
from django.template import RequestContext
from django.conf import settings
import ho.pisa as pisa
import cStringIO as StringIO
import cgi
import os
def dm_monthly(request, year, month):
html = render_to_string('reports/dmmonthly.html', { 'pagesize' : 'A4', }, context_instance=RequestContext(request))
result = StringIO.StringIO()
pdf = pisa.pisaDocument(StringIO.StringIO(html.encode("UTF-8")), dest=result, link_callback=fetch_resources )
if not pdf.err:
return HttpResponse(result.getvalue(), mimetype='application/pdf')
return HttpResponse('Gremlins ate your pdf! %s' % cgi.escape(html))
def fetch_resources(uri, rel):
path = os.path.join(settings.MEDIA_ROOT, uri.replace(settings.MEDIA_URL, ""))
return path
这是从http://groups.google.com/group/xhtml2pdf/browse_thread/thread/4cf4e5e0f4c99f55
自由获取的以下 HTML 和 Django version=2.0 中的代码行对我有用。
<img src="{{company.logo.path}}" height="100px">
尽管尝试了在谷歌上找到的所有解决方案，我还是无法让图像出现。 但是这个软糖对我有用，因为 pisa 的命令行版本显示图像正常：
from tempfile import mkstemp
# write html to a temporary file
# can used NamedTemporaryFile if using python 2.6+
fid, fname = mkstemp(dir='/tmp')
f = open(fname, 'w+b')
f.write(html)
f.close()
# now create pdf from the html
cmd = 'xhtml2pdf "%s"' % fname
os.system(cmd)
os.unlink(fname)
# get the content of the pdf
filename = fname+'.pdf'
pdf = open(filename, 'r')
content = pdf.read()
pdf.close()
os.unlink(pdf.name)
# return content
response = HttpResponse(content, mimetype='application/pdf')
response['Content-Disposition'] = 'attachment; filename=draft.pdf'
这适用于图像具有 url 或完整路径名的情况，例如。
<img src="/home/django/project/site_media/css/output/images/logo.jpg" />
<img src="http://www.mysite.com/css/output/images/logo.jpg" />
def render_to_pdf( template_src, context_dict):
template = get_template(template_src)
context = Context(context_dict)
html = template.render(context)
result = StringIO.StringIO()
if page has an image.something:
pdf = pisa.pisaDocument(StringIO.StringIO(html.encode("UTF-8")), dest=result, link_callback=fetch_resources)
else no image.something :
pdf = pisa.pisaDocument(StringIO.StringIO(html.encode("UTF-8")),result)
if not pdf.err:
return HttpResponse(result.getvalue(), mimetype='examination_report/pdf')
return HttpResponse('We had some errors<pre>%s</pre>' % escape(html))
def fetch_resources(uri, rel):
if os.sep == '\\': # deal with windows and wrong slashes
uri2 = os.sep.join(uri.split('/'))
else:# else, just add the untouched path.
uri2 = uri
path = '%s%s' % (settings.SITE_ROOT, uri2)
return path
以上所有代码对我来说都不起作用。最后我通过放置 get_full_path 过程让它工作。所以最终的代码看起来像这样
def render_to_pdf( template_src, context_dict):
now = datetime.now()
filename = now.strftime('%Y-%m-%d') + '.pdf'
template = get_template(template_src)
context = Context(context_dict)
html = template.render(context)
result = StringIO.StringIO()
pdf = pisa.pisaDocument(StringIO.StringIO(html.encode("UTF-8")),result, path=path)
if not pdf.err:
response = HttpResponse(result.getvalue(), mimetype='application/pdf')
response['Content-Disposition'] = 'attachment; filename="'+filename+'"'
return response
return HttpResponse('We had some errors<pre>%s</pre>' % escape(html))
def get_full_path_x(request):
full_path = ('http', ('', 's')[request.is_secure()], '://',
request.META['HTTP_HOST'], request.path)
return ''.join(full_path)
您可以随时使用 IText/ISharp 添加图像。
截至 2024 年撰写本文时，xhtml2pdf 在其文档中有一个包含 link_callback 的部分，Link