使用XML文件在PowerShell中创建项目列表 [英] Create list of items in PowerShell using XML file

问题描述

我有一个放置文件的XML文件.我的目标是让PowerShell脚本显示所有文件及其属性的列表.

I have a XML file in which files are put. My target is to let a PowerShell script show a list of all the files and their properties.

我的XML文件:

<FileList>
    <File>  
        <Path>C:\File1.txt</Path>
        <MaxSize>20000</MaxSize>
    </File>

    <File>  
        <Path>C:\File2.txt</Path>
        <MaxSize>20000</MaxSize>
    </File>
</FileList>

我在PowerShell中的输出需要检索文件及其大小.

My output in PowerShell needs to retrieve the file and the size of it.

示例输出:

File1: 4mb (max size= 20000mb)
File2: 3mb (max size= 20000mb)

稍后，我稍后想创建一种方法来检查每个文件是否小于其最大大小(但是首先我需要检查是否可以检索到它们)

Later, I later want to create a method to check if each file is below their max size (but first I need to check if I can retrieve them of course)

我试图找到一种方法，可以将XML中的所有文件强制转换为PowerShell中的列表或数组(文件)，但未成功.尝试实现此目标的最佳做法是什么?

I'm trying to find a method where I can cast all of the files from the XML to a list or array (of files) in PowerShell but haven't succeeded. What are best practices when trying to achieve this?

当前代码:

$files = $configFile.SelectNodes("FileList/File")

foreach ($file in $files) {
  Write-Host $file.Path
}
break

推荐答案

根据您的XML数据和文件属性创建自定义对象，然后将这些对象收集到一个变量中，例如像这样:

Create custom objects from your XML data and the file properties, and collect the objects in a variable, e.g. like this:

$list = foreach ($file in $files) {
  $f = Get-Item $file.Path
  New-Object -Type PSObject -Property @{
    Name    = $f.Name
    Path    = $file.Path
    Size    = $f.Length
    MaxSize = [int]$file.MaxSize
  }
}

或者，您可以将计算的属性添加到FileInfo对象:

Alternatively you could add calculated properties to FileInfo objects:

$list = foreach ($file in $files) {
  Get-Item $file.Path | Select-Object *,@{n='MaxSize';e={[int]$file.MaxSize}}
}

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