为什么Log4Net没有编写错误日志？

Question

我尝试了几种调整方法，但Log4Net文件记录器没有在我的MVC3网络应用程序中记录任何内容。

我缺少什么？我也没有收到任何错误。

log4net dll已添加到应用程序中，并指向本地副本。

1主web.config：

<appSettings>
    <add key="Log4NetConfigFilename" value="log4net.config" />
    <add key="Log4NetConfigFilePath" value="C:\DEV\App\source\App.Web\log4net.config" />    
  </appSettings>

2 Global.asax.cs

protected void Application_Start()
{
    log4net.Config.XmlConfigurator.Configure();
}

3 Log4net.config文件：

<?xml version="1.0" encoding="utf-8" ?>
<log4net>
  <logger name="MyLogger">
    <level value="ALL" />
    <appender-ref ref="MyRollingLogFileAppender" />
  </logger>

  <appender name="MyRollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
    <param name="File" value="C:\\Support\Logs\\logs.log" />
    <param name="AppendToFile" value="true" />
    <param name="RollingStyle" value="Size" />
    <param name="MaxSizeRollBackups" value="10" />
    <param name="MaximumFileSize" value="1024KB" />
    <param name="StaticLogFileName" value="true" />
    <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
    <layout type="log4net.Layout.PatternLayout, log4net, Version=1.2.10.0, Culture=neutral, PublicKeyToken=1b44e1d426115821">      
      <param name="ConversionPattern" value="%date{MM-dd-yyyy HH:mm:ss} [%-5level] [%identity] - %message %newline" />      
    </layout>
  </appender>
</log4net>

#4 I have a folder created C:\Support\Logs
#5 The log4net.config file is located in C:\DEV\App\source\App.Web\log4net.config

6）我正在尝试记录字符串的控制器

These 2 values getting in the controller correctly

using log4net;
using log4net.Config;
using System.Configuration;
namespace My.Controllers
{    
    public class TestController : MyBaseController
    {
        private static readonly ILog _log = LogManager.GetLogger("MyLogger");
        private static readonly string _log4netConfigFilename = ConfigurationManager.AppSettings["Log4NetConfigFilename"];
        private static readonly string _log4netConfigFilePath = ConfigurationManager.AppSettings["Log4NetConfigFilePath"];

     [HttpGet]
     public ActionResult Index()
     {            
            if (_log.IsDebugEnabled) <-- ALWAYS FALSE                
                _log.DebugFormat("Processing Index() view");  <-- NEVER GETS WRITTEN

            var model = new MyModel();            
            return View(model);
      }
   }
}

Answer 1

它表现得好像没有看到你的配置文件。尝试通过将App_Start代码更新为以下内容来显式设置它以查看配置文件：

log4net.Config.XmlConfigurator.Configure(ConfigurationManager.AppSettings["Log4NetConfigFilePath"]);

我现在不能在那里测试它，但看看是否能得到它。

Answer 2

您需要通过在调用Configure时指定路径来确保使用自定义log4net.config：

log4net.Config.XmlConfigurator.Configure(new FileInfo(ConfigurationManager.AppSettings["Log4NetConfigFilePath"]));

据我所知，您不需要在配置的<layout>部分添加额外的汇编信息（导致我出错）：

<layout type="log4net.Layout.PatternLayout">      
  <param name="ConversionPattern" value="%date{MM-dd-yyyy HH:mm:ss} [%-5level] [%identity] - %message %newline" />      
</layout>