我一直在尝试让log4net与PowerShell配合使用。我有以下的PowerShell代码，它引入了一个配置文件，并尝试创建一个简单的日志文件条目，但是会出现错误。
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Clear-Host
#
Write-Host "BEGIN: Importing module psm_logger.psm1"
Import-Module "C:\Users\Administrator\Desktop\ps\IIS\psm_logger.psm1" -Force
Write-Host "BEGIN: log4net configuration definition"
$log = New-Logger -Configuration "C:\Users\Administrator\Desktop\ps\IIS\logging\log4net.config" -Dll "C:\Users\Administrator\Desktop\ps\IIS\logging\log4net.dll"
Write-Host "END: log4net configuration definition"
Write-Host "BEGIN: log4net configuration DEBUG definition"
#$log.DebugFormat("Logger configuration file is : '{0}'", (Resolve-Path "C:\Users\Administrator\Desktop\ps\IIS\logging\log4net.config"))
Write-Host "END: log4net DEBUG configuration definition"
#======================
$ThisHostname = $env:COMPUTERNAME
#======================
Write-Host "BEGIN: Module/Snapin import/addition"
Write-Host ""
$log.Info("BEGIN: Module/Snapin import/addition")
#======================
上述提到的psm_logger.psm1文件包含：
function New-Logger
{
#Write-Host "BEGIN: New-Logger"
<#
.SYNOPSIS
This function creates a log4net logger instance already configured
.OUTPUTS
The log4net logger instance ready to be used
#>
[CmdletBinding()]
Param
(
[string]
# Path of the configuration file of log4net
$Configuration,
[Alias("Dll")]
[string]
# Log4net dll path
$log4netDllPath
)
Write-Verbose "[New-Logger] Logger initialization"
$log4netDllPath = Resolve-Path $log4netDllPath -ErrorAction SilentlyContinue -ErrorVariable Err
if ($Err)
{
throw "Log4net library cannot be found on the path $log4netDllPath"
}
else
{
Write-Verbose "[New-Logger] Log4net dll path is : '$log4netDllPath'"
[void][Reflection.Assembly]::LoadFrom($log4netDllPath) | Out-Null
# Log4net configuration loading
$log4netConfigFilePath = Resolve-Path $Configuration -ErrorAction SilentlyContinue -ErrorVariable Err
if ($Err)
{
throw "Log4Net configuration file $Configuration cannot be found"
}
else
{
Write-Verbose "[New-Logger] Log4net configuration file is '$log4netConfigFilePath' "
$FileInfo = New-Object System.IO.FileInfo($log4netConfigFilePath)
[log4net.Config.XmlConfigurator]::Configure($FileInfo)
$script:MyCommonLogger = [log4net.LogManager]::GetLogger("root")
Write-Verbose "[New-Logger] Logger is configured"
return $MyCommonLogger
}
}
}
log4net的配置文件如下:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" **requirePermission="false"**/>
</configSections>
<log4net>
<appender name="LogFileAppender" type="log4net.Appender.FileAppender">
<param name="File" value="C:\Users\Administrator\Desktop\ps\IIS\LOGS\LogTest2.txt" />
<param name="AppendToFile" value="true" />
<layout type="log4net.Layout.PatternLayout">
<param name="Header" value="[Header]\r\n" />
<param name="Footer" value="[Footer]\r\n" />
<param name="ConversionPattern" value="%d [%t] %-5p %c %m%n" />
</layout>
</appender>
<root>
<level value="ALL" />
<appender-ref ref="LogFileAppender" />
</root>
</log4net>
</configuration>
当运行时，生成的输出和错误如下：
BEGIN: 导入模块 psm_logger.psm1 BEGIN: log4net 配置定义 END: log4net 配置定义 BEGIN: log4net DEBUG 配置定义 END: log4net DEBUG 配置定义 BEGIN: 模块/插件导入/添加
方法调用失败，因为 [System.Object[]] 不包含名为“Info”的方法。 位于 C:\Users\Administrator\Desktop\ps\IIS\IIS_localLogs.ps1 的第 18 字符处 + $log.Info <<<< ("BEGIN: Module/Snapin import/addition") + CategoryInfo：InvalidOperation: (Info:String) []，RuntimeException + FullyQualifiedErrorId：MethodNotFound
非常感谢您的帮助！
（FYI：我最初从这里的最佳实践博客文章中获取了此代码：http://blog.octo.com/en/powershell-v2-my-best-practices/，我觉得非常有帮助）