xml 从 XPath 中的选择中排除某些元素
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Exclude certain elements from selection in XPath
提问by user123444555621
I know this is a simple question, but I can't figure it out. Consider the following simple XML document:
我知道这是一个简单的问题，但我无法弄清楚。考虑以下简单的 XML 文档：
<root>
<a></a>
<b></b>
<c></c>
<a></a>
<d></d>
<e></e>
<a></a>
<a></a>
</root>
What's the best way to select the nodes <b>through <e>using XPath?
<b>通过<e>使用 XPath选择节点的最佳方法是什么？
I'm looking for something like
我正在寻找类似的东西
/root/*[not(a)]
(which does not do the trick)
（这不起作用）
回答by Tomalak
/root/*[not(self::a)]
回答by Louis
Answering to add that in XPath 2.0, you can use except:
回答在 XPath 2.0 中添加它，您可以使用except：
/root/(* except a)
For XPath 1.0, Tomalak pointed out, this is the standard way to do it:
Tomalak 指出，对于 XPath 1.0，这是执行此操作的标准方法：
/root/*[not(self::a)]
By the way, if someone lands here trying to use this in XSLT 2.0 in a xsl:template/@matchattribute it won't work because @matchtakes patterns which although looklike XPath expressions, are notXPath expressions. The solution for XPath 1.0 would work in this case.
顺便说一下，如果有人试图在 XSLT 2.0 中的xsl:template/@match属性中使用它，它将不起作用，因为@match采用的模式虽然看起来像 XPath 表达式，但不是XPath 表达式。XPath 1.0 的解决方案适用于这种情况。
回答by BVH
I realize this is an old question, but I recently ran into a similar problem and used the following xpath to solve it:
我意识到这是一个老问题，但我最近遇到了类似的问题并使用以下 xpath 来解决它：
/root/*[not(name()='a')]
回答by chinna
Have you tried:
你有没有尝试过：
/root/b|/root/c|root/d|/root/e
/root/b|/root/c|root/d|/root/e
