我需要一个经过验证的带有 DTD 的 DomTree(使用getElementById
)。验证和解析有效,但 dom 不能正常工作:
from xml.dom import minidom
from xml.dom.pulldom import SAX2DOM
from lxml import etree
import lxml.sax
from StringIO import StringIO
data_string = """\
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE foo [
<!ELEMENT foo (bar)*>
<!ELEMENT bar (#PCDATA)>
<!ATTLIST bar id ID #REQUIRED>]><foo><bar id="nr_0">text</bar></foo>
"""
#parser, with vali. at parsing
etree_parser = etree.XMLParser(dtd_validation=True,attribute_defaults=True)
#parse it
sax_tree = etree.parse(StringIO(data_string),etree_parser);
handler = SAX2DOM();
lxml.sax.saxify(sax_tree,handler);
domObject = handler.document;
print domObject.getElementById("nr_0");
#returns None
print minidom.parseString(data_string).getElementById("nr_0");
#returns <DOM Element: bar at 0x7f36b77dc0e0>
似乎 SAX2DOM 不会将 DTD 传递给 dom。我忘了什么吗?我读过在构建 dom 后无法加载 DTD。
有任何想法吗?