python 富文本編輯器內容導出為pdf

將富文本內容導出為pdf

1.使用 xhtml2pdf 缺點 遇到樣式問題時會報錯，rgba之類的css問題解決不了

from xhtml2pdf import pisa

class CourseMaterialExportPdfAPIView(generics.GenericAPIView):

    permission_classes = (IsAuthenticatedOrHasOpenid,)

    def get(self, request, *args, **kwargs):

        pk = kwargs.get('pk')

        try:

            material = CourseMaterial.objects.get(id=pk)

            content = material.content
            
            import re
			
            # 處理視頻內容，因為不能展示視頻，所以將視頻的html代碼轉換為視頻內容和連接
            pattern = re.compile(r'<video.*?>')

            video_list = pattern.findall(content)

            sub_dic = dict()

            for video_tem_code in video_list:

                res = re.search('src=(.*?) ', video_tem_code)

                url = res.group(1)

                repl = '<p>視頻內容地址：%s</p>' % url

                sub_dic[video_tem_code] = repl

            for string, repl in sub_dic.items():

                content = content.replace(string, repl)
			
            # 需要安裝xhtml2pdf模塊  pip install
            from xhtml2pdf import pisa
			# 處理漢字亂碼問題
            from xhtml2pdf.default import DEFAULT_FONT
            
            DEFAULT_FONT['helvetica'] = 'yh'
			
            #導出，直接下載pdf
            response = HttpResponse(content_type='application/pdf')
            response['Content-Disposition'] = 'attachment; filename=%s.pdf' % material.name
			
            #content為富文本的內容， response為保存生成的pdf的地方
            pisa.CreatePDF(StringIO(content), response)

            return response

        except CourseMaterial.DoesNotExist:

            return Response({'status': 0, 'error': '活動不存在'})

2. 使用wkhtmltopdf

        import pdfkit
        html_url = request.GET.get('html_url')

        # pdfkit配置
        config = pdfkit.configuration(wkhtmltopdf='/usr/local/bin/wkhtmltopdf') #wkhtmltopdf的安裝路徑
        options = {
            'page-size': 'Letter',
            'margin-top': '0.75in',
            'margin-right': '0.75in',
            'margin-bottom': '0.75in',
            'margin-left': '0.75in',
            'encoding': "UTF-8",
            'no-outline': None,
            'quiet': '',
        }
        # 生成的pdf存放路徑
        pdf_path = '{}.pdf'.format(uuid.uuid4())

        # 主題 周計划，日計划導出，復用接口
        if html_url:
            pdfkit.from_url(html_url, pdf_path, configuration=config, options=options)
            file_name = request.GET.get('file_name')
        with open(pdf_path)as f:
            DEFAULT_FONT['helvetica'] = 'yh'
            response = StreamingHttpResponse(f.read(), mimetype="application/pdf")
            response['Content-Disposition'] = 'attachment; filename={}.pdf'.format(file_name)

        os.remove(pdf_path)
      ```