本文介绍了如何根据属性值选择 XmlElement?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
假设我有以下 xml
<?xml version="1.0"?>
<catalog>
<book id="bk101">
<author>Gambardella, Matthew</author>
</book>
<book id="bk102">
<author>Ralls, Kim</author>
</book>
<book id="bk103">
<author>Corets, Eva</author>
</book>
</catalog>
我有一个 xmlNode 代表我通过执行从文件中读取的整个文件
I have an xmlNode representing the whole file which I read in from a file by doing
$myXml=New-Object XML
$myXml.Load("path to the books file")
然后我如何选择 id 值为bk102"的 book 元素,以便我可以将该 Xmlnode 传递给另一个需要 XMlNode 的函数?
How do I then select the book element which has the id value of "bk102" so I can then pass that Xmlnode off to another function expecting an XMlNode?
即我的新节点是:
$Node = <book id="bk102">
<author>Ralls, Kim</author>
</book>
谢谢大家.整个上午都在挣扎.
Thanks all. Been struggling all morning.
推荐答案
您可以使用 Where-Object
过滤书籍,或者您可以尝试 XPath.下面是两个例子:
You could filter the books using Where-Object
, or you could try XPath. Here's two examples:
点导航
$bookid = 'bk102'
$myxml = [xml](Get-Content '.\New Text Document.txt')
$node = $myxml.catalog.book | Where-Object { $_.id -eq $bookid }
$node
id author
-- ------
bk102 Ralls, Kim
XPath
$bookid = 'bk102'
$myxml = [xml](Get-Content '.\New Text Document.txt')
$node = $myxml.SelectSingleNode("catalog/book[@id='$bookid']")
$node
id author
-- ------
bk102 Ralls, Kim
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