无法让log4net与.net windows服务一起工作

Question

我有一个app.config和一个Windows服务log4net.config.

app.config:

  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
  </configSections>
  <log4net configSource="log4net.config" />

log4net.config:

<log4net>
  <appender name="LogFileAppender" type="log4net.Appender.RollingFileAppender">
    <param name="File" value="D:\Projects\Integration\Interface Module\bin\Logs\MyFirstLogger.log"/>
    <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
    <appendToFile value="true" />
    <rollingStyle value="Size" />
    <maxSizeRollBackups value="2" />
    <maximumFileSize value="1MB" />
    <staticLogFileName value="true" />
    <layout type="log4net.Layout.PatternLayout">
      <param name="ConversionPattern" value="%d [%t] %-5p %c %m%n"/>
    </layout>
  </appender>

  <root>
    <level value="ALL" />
    <appender-ref ref="LogFileAppender" />
  </root>
</log4net>

我也添加了这个AssemblyInfo.cs:

[assembly: log4net.Config.XmlConfigurator(Watch = true)]

在我的一个课程中,我有:

private readonly ILog _log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

和

_log.Info(content);

我已授予所有用户对Logs文件夹的完全权限.

我的bin文件夹(运行该服务)包含my app.config和log4net.config.

但是没有生成日志文件.我错过了什么设置？

2014年3月4日更新

如果您使用的是单独的配置文件(log4net.config),请记住在解决方案资源管理器中将Copy to output directory设置设置为Copy always

Answer 1

按设计Log4Net是

fail-stop,我们的意思是log4net不会在运行时抛出意外的异常,从而可能导致应用程序崩溃

因此很难弄清楚导致问题的原因.

如何启用log4net内部调试？

来自常见问题 - http://logging.apache.org/log4net/release/faq.html

• 也可以通过在应用程序的配置文件中设置一个值来启用内部调试(不是log4net配置文件,除非log4net配置数据嵌入在应用程序的配置文件中).必须将log4net.Internal.Debug应用程序设置设置为值true.例如:

<?xml version="1.0" encoding="utf-8" ?> 
<configuration>
            <appSettings>
                <add key="log4net.Internal.Debug" value="true"/>
            </appSettings> 
</configuration>

启动时立即读取此设置,将导致发出所有内部调试消息.

• .要以编程方式启用log4net的内部调试,需要将log4net.Util.LogLog.InternalDebugging属性设置为true.显然,设置越快,将产生越多的调试.

所以这是我为log4Net创建的自定义类 - 因为配置文件非常混乱我创建了这个帮助类

• 你可以在应用程序中启动你需要的尽可能多的appender,所以如果一个dll调用其他dll都可以启动appender并且两个追加都可以工作.
• 你也可以关闭appender和(如文件appender的情况)然后将其作为电子邮件发送

Log4NetFileHelper log = new Log4NetFileHelper();
        log.Init(); //Initialize
        log.AddConsoleLogging(); //Add Console Logging
        log.AddFileLogging(Path.Combine(AssemblyDirectory, "BatchConsole.log")); 
        log.AddFileLogging(Path.Combine(AssemblyDirectory,"BatchConsole_error.log"),log4net.Core.Level.Error); 

将此属性设置为True log4net.Util.LogLog.InternalDebugging = true;

public class Log4NetFileHelper
{
    private string  DEFAULT_LOG_FILENAME=string.Format("application_log_{0}.log",DateTime.Now.ToString("yyyyMMMdd_hhmm"));
    Logger root;
    public Log4NetFileHelper()
    {

    }

    public virtual void Init()
    {
        root = ((Hierarchy)LogManager.GetRepository()).Root;
        //root.AddAppender(GetConsoleAppender());
        //root.AddAppender(GetFileAppender(sFileName));
        root.Repository.Configured = true;
    }

    #region Public Helper Methods
    #region Console Logging
    public virtual void AddConsoleLogging()
    {
        ConsoleAppender C = GetConsoleAppender();
        AddConsoleLogging(C);
    }

    public virtual void AddConsoleLogging(ConsoleAppender C)
    {
        root.AddAppender(C);
    }
    #endregion

    #region File Logging
    public virtual FileAppender AddFileLogging()
    {
        return AddFileLogging(DEFAULT_LOG_FILENAME);
    }

    public virtual FileAppender AddFileLogging(string sFileFullPath)
    {
        return AddFileLogging(sFileFullPath, log4net.Core.Level.All);
    }

    public virtual FileAppender AddFileLogging(string sFileFullPath, log4net.Core.Level threshold)
    {
        return AddFileLogging(sFileFullPath, threshold,true);  
    }

    public virtual FileAppender AddFileLogging(string sFileFullPath, log4net.Core.Level threshold, bool bAppendfile)
    {
        FileAppender appender = GetFileAppender(sFileFullPath, threshold , bAppendfile);
        root.AddAppender(appender);
        return appender;
    }

    public virtual SmtpAppender AddSMTPLogging(string smtpHost, string From, string To, string CC, string subject, log4net.Core.Level threshhold)
    {
        SmtpAppender appender = GetSMTPAppender(smtpHost, From, To, CC, subject, threshhold);
         root.AddAppender(appender);
         return appender;
    }

    #endregion


    public log4net.Appender.IAppender GetLogAppender(string AppenderName)
    {
        AppenderCollection ac = ((log4net.Repository.Hierarchy.Hierarchy)LogManager.GetRepository()).Root.Appenders;

        foreach(log4net.Appender.IAppender appender in ac){
            if (appender.Name == AppenderName)
            {
                return appender;
            }
        }

        return null;
    }

    public void CloseAppender(string AppenderName)
    {
        log4net.Appender.IAppender appender = GetLogAppender(AppenderName);
        CloseAppender(appender);
    }

    private void CloseAppender(log4net.Appender.IAppender appender)
    {
        appender.Close();
    }

    #endregion

    #region Private Methods

    private SmtpAppender GetSMTPAppender(string smtpHost, string From, string To, string CC, string subject, log4net.Core.Level threshhold)
    {
        SmtpAppender lAppender = new SmtpAppender();
        lAppender.Cc = CC;
        lAppender.To = To;
        lAppender.From = From;
        lAppender.SmtpHost = smtpHost;
        lAppender.Subject = subject;
        lAppender.BufferSize = 512;
        lAppender.Lossy = false;
        lAppender.Layout = new
        log4net.Layout.PatternLayout("%date{dd-MM-yyyy HH:mm:ss,fff} %5level [%2thread] %message (%logger{1}:%line)%n");
        lAppender.Threshold = threshhold;
        lAppender.ActivateOptions();
        return lAppender;
    }

    private ConsoleAppender GetConsoleAppender()
    {
        ConsoleAppender lAppender = new ConsoleAppender();
        lAppender.Name = "Console";
        lAppender.Layout = new 
        log4net.Layout.PatternLayout(" %message %n");
        lAppender.Threshold = log4net.Core.Level.All;
        lAppender.ActivateOptions();
        return lAppender;
    } 
    /// <summary>
    /// DETAILED Logging 
    /// log4net.Layout.PatternLayout("%date{dd-MM-yyyy HH:mm:ss,fff} %5level [%2thread] %message (%logger{1}:%line)%n");
    ///  
    /// </summary>
    /// <param name="sFileName"></param>
    /// <param name="threshhold"></param>
    /// <returns></returns>
    private FileAppender GetFileAppender(string sFileName , log4net.Core.Level threshhold ,bool bFileAppend)
    {
        FileAppender lAppender = new FileAppender();
        lAppender.Name = sFileName;
        lAppender.AppendToFile = bFileAppend;
        lAppender.File = sFileName;
        lAppender.Layout = new 
        log4net.Layout.PatternLayout("%date{dd-MM-yyyy HH:mm:ss,fff} %5level [%2thread] %message (%logger{1}:%line)%n");
        lAppender.Threshold = threshhold;
        lAppender.ActivateOptions();
        return lAppender;
    }

    //private FileAppender GetFileAppender(string sFileName)
    //{
    //    return GetFileAppender(sFileName, log4net.Core.Level.All,true);
    //}

    #endregion

    private void  ConfigureLog(string sFileName)
    {


    }
}

Answer 2

请注意,当进程作为Windows服务运行时,Environment.CurrentDirectory将为"C:\ Windows\system32"

因此,如果将log4net配置文件(log4net.config)放在*.exe旁边,则可以使用以下代码配置log4net.

var assemblyFolder = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
XmlConfigurator.Configure(new FileInfo(Path.Combine(assemblyFolder, "log4net.config")));

Answer 3

这是适合我的配置.

AssemblyInfo.cs中

[assembly: log4net.Config.XmlConfigurator(ConfigFile = "Log4net.config", Watch = true)]

Log4net.Config

<?xml version="1.0" encoding="utf-8" ?>
<log4net>
    <appender name="LogFileAppender" type="log4net.Appender.RollingFileAppender,log4net">
            <param name="File" value="C:\TEMP\Logs.txt"/>
            <lockingModel type="log4net.Appender.FileAppender+MinimalLock,log4net" />
            <appendToFile value="true" />
            <rollingStyle value="Size" />
            <maxSizeRollBackups value="2" />
            <maximumFileSize value="1MB" />
            <staticLogFileName value="true" />
        <layout type="log4net.Layout.PatternLayout,log4net">
            <param name="ConversionPattern" value="%d [%t] %-5p %c %m%n"/>
        </layout>
    </appender>
    <root>
         <level value="ALL" />
         <appender-ref ref="LogFileAppender" />
    </root>
</log4net>

C#代码

private static readonly log4net.ILog Logger = log4net.LogManager.GetLogger(typeof(class_name));

我在C#类库项目中有此设置,所有其他项目使用此项目引用来记录异常.

Answer 4

检查并重新检查...... :-)

您只需XmlConfigurator.Configure();在创建记录器之前调用(仅一次).

很高兴为您服务,

奥菲尔

Answer 5

如果您将创建一个不同的配置文件并将与log4net相关的内容放入其中，那么您将需要[assembly: log4net.Config.XmlConfigurator(ConfigFile = @"...\log4net.config", Watch = true)] 在AssemblyInfo.cs内部使用 ，而不仅仅是

[assembly: log4net.Config.XmlConfigurator(Watch = true)]

否则，您必须将 <log4net> ... </log4net>部分配置放入App.config中