python 富文本编辑器内容导出为pdf

将富文本内容导出为pdf

1.使用 xhtml2pdf 缺点 遇到样式问题时会报错，rgba之类的css问题解决不了

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
			
            # 处理视频内容，因为不能展示视频，所以将视频的html代码转换为视频内容和连接
            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>视频内容地址：%s</p>' % url

                sub_dic[video_tem_code] = repl

            for string, repl in sub_dic.items():

                content = content.replace(string, repl)
			
            # 需要安装xhtml2pdf模块  pip install
            from xhtml2pdf import pisa
			# 处理汉字乱码问题
            from xhtml2pdf.default import DEFAULT_FONT
            
            DEFAULT_FONT['helvetica'] = 'yh'
			
            #导出，直接下载pdf
            response = HttpResponse(content_type='application/pdf')
            response['Content-Disposition'] = 'attachment; filename=%s.pdf' % material.name
			
            #content为富文本的内容， response为保存生成的pdf的地方
            pisa.CreatePDF(StringIO(content), response)

            return response

        except CourseMaterial.DoesNotExist:

            return Response({'status': 0, 'error': '活动不存在'})

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的安装路径
        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存放路径
        pdf_path = '{}.pdf'.format(uuid.uuid4())

        # 主题 周计划，日计划导出，复用接口
        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)
      ```