尝试使Log4net与PowerShell配合使用(混合使用log4net配置文件) [英] Trying to get log4net working with PowerShell (with a log4net config file in the mix)

问题描述

我一直在努力使log4net与PowerShell一起使用.我有以下PowerShell代码，它使用配置文件插入log4net，然后尝试进行简单的日志文件输入，但会出错.

I have been struggling with getting log4net working with PowerShell. I have the following PowerShell code that pulls in log4net with a configuration file and then attempts to make a simple log file entry but which errors out.

Clear-History
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")
#======================

上面引用的psm_logger.psm1文件包含:

The above referenced psm_logger.psm1 file contains:

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:

The configuration file for log4net looks like:

<?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>

运行时，输出AND产生的错误是:

When run the output AND error produced is:

BEGIN:导入模块psm_logger.psm1 开始:log4net配置定义 结束:log4net配置定义 开始:log4net配置调试定义 结束:log4net DEBUG配置定义 开始:模块/管理单元导入/添加

BEGIN: Importing module psm_logger.psm1 BEGIN: log4net configuration definition END: log4net configuration definition BEGIN: log4net configuration DEBUG definition END: log4net DEBUG configuration definition BEGIN: Module/Snapin import/addition

方法调用失败，因为[System.Object []]不包含名为"Info"的方法. 在C:\ Users \ Administrator \ Desktop \ ps \ IIS \ IIS_IIS_localLogs.ps1:18 char:10 + $ log.Info<<<< ("BEGIN:模块/管理单元导入/添加") + CategoryInfo:InvalidOperation:(Info:String)[]，RuntimeException + FullyQualifiedErrorId:MethodNotFound

Method invocation failed because [System.Object[]] doesn't contain a method named 'Info'. At C:\Users\Administrator\Desktop\ps\IIS\IIS_localLogs.ps1:18 char:10 + $log.Info <<<< ("BEGIN: Module/Snapin import/addition") + CategoryInfo : InvalidOperation: (Info:String) [], RuntimeException + FullyQualifiedErrorId : MethodNotFound

任何帮助将不胜感激！

(仅供参考:我最初是从此处的最佳做法博客条目中获得此代码的:

(FYI: I originally got this code from a best practices blog entry here: http://blog.octo.com/en/powershell-v2-my-best-practices/ which I found very helpful)

推荐答案

New-Logger是一个非常有用的cmdlet，值得为Powershell的较新版本进行更新. psm_logger.psm1当前在PS V3及更高版本下给出System.Void错误.将装配载荷更改为

New-Logger is such a useful cmdlet, it's worth updating for newer versions of Powershell. psm_logger.psm1 currently gives a System.Void error under PS V3 and later. Changing the assembly load to

[Reflection.Assembly]::LoadFrom($log4netDllPath) | Out-Null

没有[无效]可以解决问题.

without the [Void] sorts out the problem.

这篇关于尝试使Log4net与PowerShell配合使用(混合使用log4net配置文件)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！