Question

运行时我需要验证我的参数（键）。例如，当我设置错误的参数时（myscript.ps1 -p1 blabla -p2 blabla）我在控制台中出错（错误的类型）。我怎么能抛出这个错误？另外，我需要在不同级别编写日志（Debug，Error，Warning）。我只知道一个cmdlet Start-Transcript，但它会写下所有操作。

        param
        (
             [datetime]$sleep,
             [datetime]$wake_up
        )   
        #Starting log process
Start-Transcript .\logger.txt -Append
function do_sleep () 
{
    if (!$sleep)
    {
        [datetime]$sleep = Read-Host "Input time when you go to sleep"
    }
    if (!$wake_up)
    {
        [datetime]$wake_up = Read-Host "Input time when you wake up"
    }
    if ($wake_up.Hour -le 8 ) {
        Write-Host "You are lark"
    }
    if ($wake_up.Hour -gt 8) {
        Write-Host "You are owl"
    }
    if ($wake_up -lt $sleep) {
        $sleeping_time = ($wake_up.AddDays(1) - $sleep)
        $normal_sleep = $sleeping_time.hours;
    }
    else {
        $sleeping_time = $wake_up - $sleep;
        $normal_sleep = $sleeping_time.hours;
    }   
    if ($normal_sleep -ge 8 ) {
        Write-Host "You slept more"  $sleeping_time.Hours  "hours. You are lucky man. " 
    }
}
do
{
    try
    {
        do_sleep
        exit
    }
    catch 
    {
        Write-Host ("Wrong input. Please input data again.")
        $g = 1;
    }
}
while ($g -eq 1)
Stop-Transcript

Answer 1

尝试这样的事情：

$ScriptName = "Script1"

try
{

    #create log
    if (![System.Diagnostics.EventLog]::SourceExists($ScriptName))
    {
        New-EventLog -LogName Application -Source $ScriptName
    }


    #Log information
    Write-EventLog –LogName Application –Source $ScriptName –EntryType Information –EventID 1 –Message "Starting..."

    $Test="test1"


    if ($Test -eq "test1") 
    {
    #throw exception 1
    throw "$Test is bad"
    }

    if ($Test -eq "test2") 
    {
    #throw exception 2
    throw "$Test is really bad"
    }

    if ($Test -eq "test3") 
    {
    #Log warning
    Write-EventLog –LogName Application –Source $ScriptName –EntryType Warning –EventID 1 –Message "Starting..."
    }

}
catch 
{
        #log all exceptions 
        $result="Message : {0}, Type : {1}, Exception : {2}, StackTrace : {3}" -f $_, $_.GetType(), $_.Exception, $_.Exception.StackTrace

        Write-EventLog –LogName Application –Source $ScriptName –EntryType Error –EventID 1 –Message $result

        #rethrow if you want print errors to output standard error
        throw
}
finally
{
    #Log information
    Write-EventLog –LogName Application –Source $ScriptName –EntryType Information –EventID 1 –Message "Ending..."
}

Answer 2

为了能够使用不同的日志记录级别，使用以下属性修饰param：

[CmdletBinding()]Param

要验证参数，您可以使用验证属性，例如

[ValidateNotNullOrEmpty()] $MyParam

有关详细信息，请搜索“高级功能PowerShell”或查看在PowerShell ISE中按Ctrl + J时获得的代码段

如何在PowerShell脚本中验证我的密钥？

2 个答案: