这可能很简单,但我试图确定一个节点是否存在于 XML 文档中。我以为我在这篇文章中找到了答案, How to check whether a node exists or not using powershell without getting exception? ,但我没有让它工作。这是我最近的尝试。
foreach ($vendor in $xml.Vendors.Vendor| Where-Object {$_.Type -match "Send"}) {
$NodeExists = $vendor.SelectSingleNode($vendor.EncKey)
if ($NodeExists -ne $null) {
# Do something
}
else {
# something else
}
}
如有任何帮助,我们将不胜感激。
编辑:这是我的测试文件中的 XML。我需要找出每个供应商的 EncKey 是否存在或注释。
<?xml version="1.0" encoding="UTF-8"?>
<!-- Vendors we will send and retreive files from Get-Send means we will get a file and send them a file Send means we will only send them a file-->
<Vendors>
<Vendor Type="Get-Send">
<Name>Vendor1</Name>
<RemotePath>/Remote/Path1/</RemotePath>
<EncKey>pgpenc.key</EncKey>
</Vendor>
<Vendor Type="Send">
<Name>Vendor2</Name>
<RemotePath>/Remote/Path2/</RemotePath>
<!-- This one has no EncKey -->
</Vendor>
</Vendors>
最佳答案
我能想到的最简单的方法是尝试将节点值写入变量,然后查看该变量是否为空。这是标准书店 xml 文件的示例。
[xml]$bookstore = Get-Content .\bookstore.xml
foreach ($book in $bookstore.bookstore.book | Where-Object {$_.Type -match "novel"}) {
$NodeExists = $book.author
if($NodeExists){
Write-Host $book.author
}
else{
Write-Host 'No Author'
}
}
所以对于你的脚本,我认为它可能是
$NodeExists = $null
foreach ($vendor in $xml.Vendors.Vendor| Where-Object {$_.Type -match "Send"}) {
$NodeExists = $vendor.EncKey
if ($NodeExists) {
# Do something
}
else {
# something else
}
}
关于xml - 确定 XML 节点存在,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/20433932/