问题描述
我正在尝试从PowerShell脚本中的功能之一解析响应,并根据响应做出一些决定。
该函数成功返回JSON对象,但无法解析该函数的响应。我需要检查有效节点数是否为0。
[String[]] $NodeList = 'a1572dev00e001','a1572dev00q001'
$Response = Get-Nodes
Write-Output "Response $Response"
$JSRes = $Response | ConvertFrom-Json
Write-Output "Parsing response $JSRes"
#$Result = "success"
if($JSRes.ValidNodes.Count -gt 0)
{
Write-Output "$JSRes.ValidNodes"
$Result = "success"
}
else
{
Write-Output "All nodes are Invalid"
Write-Output "Invalid Nodes: $JSRes.Invalid"
$Result = "Failed"
$ErrorMessage = "All nodes are Invalid"
}
Write-Output $Result
#Function
function Get-Nodes
{
$ValidNodes=@()
$InvalidNodes=@()
foreach($Node in $NodeList)
{
if(Get-ADComputer -filter {Name -eq $Node})
{
$ValidNodes +=$Node
}
else
{
$InvalidNodes +=$Node
}
}
$JRes = @{"ValidNodes"=$ValidNodes;"Invalid"=$InvalidNodes} | ConvertTo-Json -Compress
Write-Output $JRes
return $JRes
}
输出:
Response {"ValidNodes":["a1572dev00e001","a1572dev00q001"],"Invalid":[]} {"ValidNodes":["
a1572dev00e001","Invalid":[]}
Parsing response
All nodes are Invalid
Invalid Nodes:
Failed
解决方法
一个问题是您输出两次$ Jres。
Write-Output $JRes
return $JRes
这些有效地做完全相同的事情。接下来,您似乎应该使用ConvertFrom-String
ConvertFrom-Json
$JSON = $Response | ConvertFrom-String
最后,您尝试输出仅存在于函数中的$ValidNodes
和$InvalidNodes
。将它们更改为$JSON.ValidNodes
和$JSON.InvalidNodes
另一个建议是参数化Nodelist,以便您可以将节点传递给函数。
#Function
function Get-Nodes
{
Param([string[]]$nodelist)
$ValidNodes=@()
$InvalidNodes=@()
foreach($Node in $NodeList)
{
if(Get-ADComputer -filter {Name -eq $Node})
{
$ValidNodes +=$Node
}
else
{
$InvalidNodes +=$Node
}
}
$JRes = @{"ValidNodes"=$ValidNodes;"Invalid"=$InvalidNodes} | ConvertTo-Json -Compress
$JRes
}
$Response = Get-Nodes a1572dev00e001,a1572dev00q001
Write-Output "Response $Response"
$JSON = $Response | ConvertFrom-Json
Write-Output "Parsing response $JSON"
if($JSON.ValidNodes.Count -gt 0)
{
Write-Output "Valid Nodes: $($JSON.ValidNodes)"
$Result = "success"
}
else
{
Write-Output "All nodes are Invalid"
Write-Output "Invalid Nodes: $($JSON.InValidNodes)"
$Result = "failed"
$ErrorMessage = "All nodes are Invalid"
}
Write-Output $Result