Question

我正在使用html2pdf生成pdf报告，如果有大量数据/记录则不会生成pdf。我有5000条记录和它将涵盖400多个pdf页面。如果数据/记录仅为1000（涵盖最多80-85个pdf页面），则会成功生成。但就上述而言，它完全失败了。有没有解决方案，或者我是否需要使用任何其他插件。

我使用 write_pdf 功能

html2pdf.py

from django import http 
from django.http import HttpResponse 
from django.shortcuts import render_to_response 
from django.template.loader import get_template 
from django.template import Context 
import ho.pisa as pisa 
import cStringIO as StringIO 
import cgi, os 
from django.conf import settings 
from datetime import datetime  

def fetch_resources(uri, rel):  
   path = os.path.join(settings.MEDIA_ROOT, uri.replace("//", ""))  
   return path  

def write_pdf(template_src, context_dict, filename):
    os.chdir(settings.MEDIA_ROOT+'/pathtofoldertosave/')
    template = get_template(template_src)
    context = Context(context_dict)
    html  = template.render(context)
    result = open(filename, 'wb') 

    pdf = pisa.pisaDocument(StringIO.StringIO(
        html.encode("UTF-8")), result,link_callback=fetch_resources)
    result.close()
    return str(settings.MEDIA_URL)+'/pathtofoldertosave/'+str(filename)  


def render_to_pdf(template_src, context_dict,file_name):
    template = get_template(template_src)
    context = Context(context_dict)
    html  = template.render(context)
    result = StringIO.StringIO()
    pdf = pisa.pisaDocument(StringIO.StringIO(html.encode("ISO-8859-1")), result, link_callback=fetch_resources)
    if not pdf.err:         
         response = HttpResponse( result.getvalue() )           response['Content-Type'] = 'application/pdf'        
         response['Content-Disposition'] = 'attachment; filename='+file_name;       
         return response
    return http.HttpResponse('We had some errors<pre>%s</pre>' % cgi.escape(html))

生成报告的功能是： report.py

def reportFun(request):     
    mem  = Member.objects.all()
    FileName = "Report_"+datetime.now().strftime('%d-%m-%Y-%H:%M')+".pdf"
    fname = "http://"+str(request.META['HTTP_HOST'])+"/"+write_pdf('report_pdf.html',{'pagesize':'A4','data':mem}, FileName) 
    return render_to_response("report.html",{'result':mem,'fname':fname}, context_instance=RequestContext(request))

python html2pdf没有为批量数据生成pdf

0 个答案: