Powershell remove XML tags
Question
I'm new to PowerShell and am trying to remove a XML element from a xml XML file of mine.
To do this I have used the following example code that got from Adding and Removing Xmlnode using Powershell
The example works well but when I try to adept it for my code it no longer works. The code is as follows:
$Output = "C:\Users\Desktop\resulttest.xml"
# Load the existing document
$Doc = [xml](Get-Content -Path C:\Users\Desktop\test.xml)
# Specify tag names to delete and then find them
$DeleteNames= "body"
($Doc.Task.ChildNodes | Where-Object { $DeleteNames -contains $_.Name }) | ForEach-Object {
# Remove each node from its parent
[void]$_.ParentNode.RemoveChild($_)
}
# Save the modified document
$Doc.Save($Output)
I use the following example XML file:
<html>a
<body>b</body>
<Price>300</Price>
<Total> 5000 </Total>
<Part_C>
<Name>Jar</Name>
<Title>Mr</Title>
<CountryCode> 5000 </CountryCode>
</Part_C>
</html>
The goal of the XML file is that it removes multiple tags like "Price" and "Total" or "Price", "Title", "Total"
But when I run the code it still contains these tags .
My question is what I am doing wrong and how can I ensure that PowerShell removes the XML tags?
2 answers
solution1
2 2016-09-05 09:15:06
This works perfectly.
$Output = "resulttest.xml"
$Doc = [xml]"<task><body>b</body><bla>bla</bla></task>"
$DeleteNames = "body"
$Doc.Task.ChildNodes | Where-Object { $DeleteNames -eq $_.Name } | ForEach-Object {
$_.ParentNode.RemoveChild($_) | Out-Null
}
$Doc.Save($Output)
My guess would be that $Doc.Task does not actually select anything in your XML document.
solution2
0 ACCPTED 2016-09-05 08:20:41
Without going too deep into it, I think the problem may be that you're not operating on the $Doc element itself. I'd use XML methods SelectNodes directly on it:
$Doc.ChildNodes.SelectNodes($DeleteNames) | Foreach-Object {
$Doc.ChildNodes.RemoveChild($_)
}
$Doc.Save($Output)
UPDATE: If $DeleteNames contain more than one criteria/node, one would need to make it an array and call the code once for each (SelectNodes does not support patterns):
,"Price","Total" | Foreach-Object {
$Doc.ChildNodes.SelectNodes($_) | Foreach-Object {
...
I suppose you could do an alternate node selection using eg XPath, but I haven't dug much into that.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.