使用xhtml2pdf创建pdf时的CSS解析错误pisa.CreatePDF()

时间:2014-05-24 14:09:03

标签: python html css pdf xhtml2pdf

我正在关注xhtml2pdf guides

我使用了一个示例html文件并保存为test.html:

<html>
<head>
<style>
    @page {
        size: a4 portrait;
        @frame header_frame {           # Static Frame
            -pdf-frame-content: header_content;
            left: 50pt; width: 512pt; top: 50pt; height: 40pt;
        }
        @frame content_frame {          # Content Frame
            left: 50pt; width: 512pt; top: 90pt; height: 632pt;
        }
        @frame footer_frame {           # Another static Frame
            -pdf-frame-content: footer_content;
            left: 50pt; width: 512pt; top: 772pt; height: 20pt;
        }
    }
</style>
</head>

<body>
    <!-- Content for Static Frame 'header_frame' -->
    <div id="header_content">Lyrics-R-Us</div>

    <!-- Content for Static Frame 'footer_frame' -->
    <div id="footer_content">(c) - page <pdf:pagenumber>
        of <pdf:pagecount>
    </div>

    <!-- HTML Content -->
    To PDF or not to PDF
</body>
</html>

然后我将此文件作为字符串读入并尝试创建pdf:

with open('test.html','r') as f:
    sourceHtml = f.read()
outputFilename = "test.pdf"
resultFile = open(outputFilename , "w+b")
pisaStatus = pisa.CreatePDF(sourceHtml,dest=resultFile)
resultFile.close()

但是,我得到以下错误回溯:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Python27\lib\site-packages\xhtml2pdf\document.py", line 89, in pisaDocument
    encoding, context=context, xml_output=xml_output)
  File "C:\Python27\lib\site-packages\xhtml2pdf\document.py", line 57, in pisaStory
    pisaParser(src, context, default_css, xhtml, encoding, xml_output)
  File "C:\Python27\lib\site-packages\xhtml2pdf\parser.py", line 660, in pisaParser
    context.parseCSS()
  File "C:\Python27\lib\site-packages\xhtml2pdf\context.py", line 428, in parseCSS
    self.css = self.cssParser.parse(self.cssText)
  File "C:\Python27\lib\site-packages\xhtml2pdf\w3c\cssParser.py", line 431, in parse
    src, stylesheet = self._parseStylesheet(src)
  File "C:\Python27\lib\site-packages\xhtml2pdf\w3c\cssParser.py", line 530, in _parseStylesheet
    src, atResults = self._parseAtKeyword(src)
  File "C:\Python27\lib\site-packages\xhtml2pdf\w3c\cssParser.py", line 650, in _parseAtKeyword
    src, result = self._parseAtPage(src)
  File "C:\Python27\lib\site-packages\xhtml2pdf\w3c\cssParser.py", line 746, in _parseAtPage
    src, atResults = self._parseAtKeyword(src)
  File "C:\Python27\lib\site-packages\xhtml2pdf\w3c\cssParser.py", line 657, in _parseAtKeyword
    src, result = self._parseAtFrame(src)
  File "C:\Python27\lib\site-packages\xhtml2pdf\w3c\cssParser.py", line 766, in _parseAtFrame
    src, properties = self._parseDeclarationGroup(src.lstrip())
  File "C:\Python27\lib\site-packages\xhtml2pdf\w3c\cssParser.py", line 1017, in _parseDeclarationGroup
    raise self.ParseError('Declaration group closing \'}\' not found', src, ctxsrc)
xhtml2pdf.w3c.cssParser.CSSParseError: Declaration group closing '}' not found:: (u'{           ', u'# Static Frame\n     ')

这似乎意味着css代码中缺少}。然而,对我来说似乎很好。我正在使用Windows,所以我认为这可能与\r\n行EOL有关 - 但事实并非如此。

谁能看到我做错了什么?

2 个答案:

答案 0 :(得分:2)

当我将所有CSS定义放在一行中时,它可以正常工作:

<html>
<head>
<style>
    @page {size: a4 portrait; @frame header_frame {-pdf-frame-content: header_content; left: 50pt; width: 512pt; top: 50pt; height: 40pt;} @frame content_frame { left: 50pt; width: 512pt; top: 90pt; height: 632pt;} @frame footer_frame { -pdf-frame-content: footer_content; left: 50pt; width: 512pt; top: 772pt; height: 20pt;}}
</style>
</head>
...

注意,如果我将它们分开,以便每个定义都有一个单独的行,它就会挂起。

答案 1 :(得分:1)

您遇到的问题与错误完全无关,但仍然涉及您的CSS。

CSS中的注释是使用/**/创建的,而不是像Python中的#。如果你删除&#34;评论&#34;从您的文件中,它由pisa解析和创建。这也是您的单行示例有效的原因,但它们并未包括在内。