Question

我试图在python 2.5和2.7上用LXML解析器解析破坏的HTML

与LXML文档（http://lxml.de/parsing.html#parsing-html）不同，解析损坏的HTML不起作用：

from lxml import etree
import StringIO
broken_html = "<html><head><title>test<body><h1>page title</h3>"
parser = etree.HTMLParser()
tree   = etree.parse(StringIO.StringIO(broken_html))

结果：

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "lxml.etree.pyx", line 2954, in lxml.etree.parse (src/lxml/lxml.etree.c:56220)
  File "parser.pxi", line 1550, in lxml.etree._parseDocument (src/lxml/lxml.etree.c:82482)
  File "parser.pxi", line 1578, in lxml.etree._parseMemoryDocument (src/lxml/lxml.etree.c:82764)
  File "parser.pxi", line 1457, in lxml.etree._parseDoc (src/lxml/lxml.etree.c:81562)
  File "parser.pxi", line 965, in lxml.etree._BaseParser._parseDoc (src/lxml/lxml.etree.c:78232)
  File "parser.pxi", line 569, in lxml.etree._ParserContext._handleParseResultDoc (src/lxml/lxml.etree.c:74488)
  File "parser.pxi", line 650, in lxml.etree._handleParseResult (src/lxml/lxml.etree.c:75379)
  File "parser.pxi", line 590, in lxml.etree._raiseParseError (src/lxml/lxml.etree.c:74712)
lxml.etree.XMLSyntaxError: Opening and ending tag mismatch: h1 line 1 and h3, line 1, column 50

Answer 1

不要只构造该解析器，使用它（根据您链接的示例）：

>>> tree = etree.parse(StringIO.StringIO(broken_html), parser=parser)
>>> tree
<lxml.etree._ElementTree object at 0x2fd8e60>

或使用lxml.html作为快捷方式：

>>> from lxml import html
>>> broken_html = "<html><head><title>test<body><h1>page title</h3>"
>>> html.fromstring(broken_html)
<Element html at 0x2dde650>

Answer 2

您可以尝试使用lxml.html而不是

>>> import lxml.html
>>> broken_html = "<html><head><title>test<body><h1>page title</h3>"
>>> root = lxml.html.fromstring(broken_html)
>>> lxml.html.tostring(root)
'<html><head><title>test</title></head><body><h1>page title</h1></body></html>'

Answer 3

lxml允许您通过使用recover=True

创建解析器实例来加载损坏的xml

etree.XMLParser(recover=True)

创建解析器时可以使用相同的技术。

如何使用LXML解析损坏的HTML

3 个答案: