首先必须将json文件转换为PowerShell对象，如下所示

$JsonObject = Get-Content -Path "C:\path\to\temp_JSON.json" | ConvertFrom-Json

然后可以将其用于参数InputObject

$XML = ConvertTo-Xml -As Stream -InputObject $JsonObject -Depth 3

• 请注意参数Depth。根据您的结构，您可能需要尝试使用此参数，因为默认值为1。请参阅documentation以供参考。*

然后，可以使用命令Out-File将生成的XML对象保存到文件中

Out-File -FilePath "C:\path\to\temp_XML.xml" -InputObject $XML

这也可以通过管道在一条管道中完成。

Get-Content -Path "C:\path\to\temp_JSON.json" | ConvertFrom-Json | ConvertTo-Xml -As Stream -Depth 3 | Out-File -FilePath "C:\path\to\temp_XML.xml"

我认为最好的解决方案是拥有特定的节点，而不是属性节点，你应该使用以下定制函数Convert-CustomObjectToXml
此代码段最初由Eric Wannemacher Blog完成，然后由Nathan Kulas改进

Function Convert-CustomObjectToXml {
    [CmdletBinding()]
    param (
        [PSCustomObject]$object,
        [Int32]$depth = 1,
        [String]$rootEl = "root",
        [String]$indentString = "  ",
        [Int32]$indent = 1,
        [switch]$isRoot = $true,
        [String]$XmlVersion = "1.0",
        [String]$Encoding = "UTF-8"
    )
    BEGIN {
        $sb = [System.Text.StringBuilder]::new()
    }

    PROCESS {
        # Output the root element opening tag
        if ($isRoot) {
            [void]$sb.AppendLine(("<{0}>" -f $rootEl))
        }

        ForEach ( $item in $object ) {
            # Iterate through all of the note properties in the object.
            foreach ($prop in (Get-Member -InputObject $item -MemberType NoteProperty)) {
                $children = $item.($prop.Name)
                foreach ($child in $children) {
                    # Check if the property is an object and we want to dig into it
                    if ($child.GetType().Name -eq "PSCustomObject" -and $depth -gt 1) {
                        [void]$sb.AppendLine(("{0}<{1}>" -f ($indentString * $indent), $prop.Name))
                        Convert-CustomObjectToXml $child -isRoot:$false -indent ($indent + 1) -depth ($depth - 1) -indentString $indentString | ForEach-Object { [void]$sb.AppendLine($_) }
                        [void]$sb.AppendLine(("{0}</{1}>" -f ($indentString * $indent), $prop.Name))
                    }
                    else {
                        # output the element or elements in the case of an array
                        foreach ($element in $child) {
                            [void]$sb.AppendLine(("{0}<{1}>{2}</{1}>" -f ($indentString * $indent), $prop.Name, $element))
                        }
                    }
                }
            }
        }

        # If this is the root, close the root element and convert it to Xml and output
        if ($isRoot) {
            [void]$sb.AppendLine(("</{0}>" -f $rootEl))
            [xml]$Output = $sb.ToString()
            $xmlDeclaration = $Output.CreateXmlDeclaration($XmlVersion,$Encoding,$null)
            [void]$Output.InsertBefore($xmlDeclaration, $Output.DocumentElement)
            $Output
        }
        else {
            # If this is the not the root, this has been called recursively, output the string
            Write-Output $sb.ToString()
        }
    }
    END {}
}