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我遇到了xml.dom.minidom python包的奇怪問題。我生成一個文檔,用從終端獲取的數據填充文檔。有時這些數據包含終端控制字符。當我在minidom.toprettyxml()
文本數據節點中存儲這樣的字符時,一切看起來都很好,但是,生成的文檔不是有效的XML。Python xml.dom.minidom生成無效的XML?
有誰知道爲什麼minidom允許生成無效文檔?這是與「迷你」部分連接嗎?
這裏是提取的示例代碼(有一些系統信息太):
Python 2.6.5 (r265:79063, Apr 16 2010, 13:57:41)
[GCC 4.4.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from xml.dom import minidom
>>> impl = minidom.getDOMImplementation()
>>> doc = impl.createDocument(None, "results", None)
>>> root = doc.firstChild
>>> outString = "test "+chr(1) #here goes control character
>>> root.appendChild(doc.createTextNode(outString))
<DOM Text node "'test \x01'">
>>> doc.toprettyxml(encoding="utf-8")
'<?xml version="1.0" encoding="utf-8"?>\n<results>\n\ttest \x01\n</results>\n'
>>> with open("/tmp/outfile", "w") as f:
... f.write(doc.toprettyxml(encoding="utf-8"))
...
>>> doc2 = minidom.parse("/tmp/outfile")
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.6/xml/dom/minidom.py", line 1918, in parse
return expatbuilder.parse(file)
File "/usr/lib/python2.6/xml/dom/expatbuilder.py", line 924, in parse
result = builder.parseFile(fp)
File "/usr/lib/python2.6/xml/dom/expatbuilder.py", line 207, in parseFile
parser.Parse(buffer, 0)
xml.parsers.expat.ExpatError: not well-formed (invalid token): line 3, column 6
>>> open("/tmp/outfile","r").readlines()
['<?xml version="1.0" encoding="utf-8"?>\n', '<results>\n', '\ttest \x01\n', '</results>\n']
>>>
嘗試將您的文本移動到CDATA部分。 – 2011-04-20 09:44:10
可能有各種解決方法,我甚至比CDATA更好,但問題是:爲什麼minidom會生成無效的XML?這是一個錯誤還是一個功能? (可能與miniidom的「ligthness」連接) – 2011-04-20 12:50:30