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Log4Net似乎连接到数据库,但没有插入

log4net-appender log4net-configuration log4net iis c#

3

Christopher Johnson · 技术社区 · 7 年前

我已经打开了调试,所以我很确定它正在连接到db。我之所以这么说,是因为如果我拼错了数据库名称,它会将错误写入输出。

我所做的是适应 this tutorial 整合到一个项目中。如果你需要看更多,请告诉我。

Log4Net.config

<?xml version="1.0" encoding="utf-8" ?>
<log4net debug="true">
  <root>
    <level value="ALL"/>
    <appender-ref ref="AdoNetAppender"/>
    <appender-ref ref="DebugAppender"/>
  </root>
  <appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">
  <bufferSize value="1" />
  <connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
  <connectionString value="Data Source=server;Initial Catalog=db; User Id=user; Password=pass" />
  <commandText value="INSERT INTO LogException ([LogLevel],[LogMessage],[StackTrace],[Object],[CreateDateTime]) VALUES (@log_level, @message, @stacktrace, @exception, @date)" />
    <parameter>
      <parameterName value="@log_date" />
      <dbType value="DateTime" />
      <layout type="log4net.Layout.RawTimeStampLayout" />
    </parameter>
    <parameter>
      <parameterName value="@thread" />
      <dbType value="String" />
      <size value="255" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%thread" />
      </layout>
    </parameter>
    <parameter>
      <parameterName value="@log_level" />
      <dbType value="String" />
      <size value="50" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%level" />
      </layout>
    </parameter>
    <parameter>
      <parameterName value="@logger" />
      <dbType value="String" />
      <size value="255" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%logger" />
      </layout>
    </parameter>
    <parameter>
      <parameterName value="@message" />
      <dbType value="String" />
      <size value="4000" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%message" />
      </layout>
    </parameter>
    <parameter>
      <parameterName value="@exception" />
      <dbType value="String" />
      <size value="2000" />
      <layout type="log4net.Layout.ExceptionLayout" />
    </parameter>
    <parameter>
      <parameterName value="@entryAssembly" />
      <dbType value="String" />
      <size value="200" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%property{entryAssembly}" />
      </layout>
    </parameter>
    <parameter>
      <parameterName value="@callingAssembly" />
      <dbType value="String" />
      <size value="200" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%property{callingAssembly}" />
      </layout>
    </parameter>
    <parameter>
      <parameterName value="@method" />
      <dbType value="String" />
      <size value="2000" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%property{method}" />
      </layout>
    </parameter>
    <parameter>
      <parameterName value="@stacktrace" />
      <dbType value="String" />
      <size value="2000" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%stacktrace" />
      </layout>
    </parameter>
  </appender>
</log4net>

using System;
using System.Diagnostics;
using System.IO;
using System.Linq;
using Logging.Contracts.Log;
using log4net;
using log4net.Appender;
using log4net.Config;
using log4net.Filter;
using log4net.Util;


namespace Logging
{
    public class Log4NetLoggingService : ILoggingService
    {
        private readonly ILog _logger;

        static Log4NetLoggingService()
        {
            var log4NetConfigFilePath = @"C:\Work\folder\Main\Logging\Log4Net.config";

            XmlConfigurator.ConfigureAndWatch(new FileInfo(log4NetConfigFilePath));

        }

        //targets reads from and enum to know where to save.
        public Log4NetLoggingService(LogTarget targets = LogTarget.All)
        {
            _logger = LogManager.GetLogger(new StackFrame(1).GetMethod().DeclaringType);
#if DEBUG
            var error = LogManager.GetRepository().ConfigurationMessages.Cast<LogLog>();
#endif

            if (targets.HasFlag(LogTarget.All))
                return;

            SwitchOffLogTargets(targets);
        }

        protected ILog logger { get { return _logger; } }

        public void Fatal(ErrorLogEntry logEntry)
        {
            logEntry.Level = Level.Fatal.ToString();
            if (_logger.IsFatalEnabled)
                _logger.Fatal(logEntry);
        }

        public void Error(ErrorLogEntry logEntry)
        {
            logEntry.Level = Level.Error.ToString();
            if (_logger.IsErrorEnabled)
                _logger.Error(logEntry);
        }

        public void Warn(LogEntry logEntry)
        {
            logEntry.Level = Level.Warn.ToString();
            if (_logger.IsWarnEnabled)
                _logger.Warn(logEntry);
        }

        public void Info(LogEntry logEntry)
        {
            logEntry.Level = Level.Info.ToString();
            if (_logger.IsInfoEnabled)
                _logger.Info(logEntry);
        }

        public void Debug(LogEntry logEntry)
        {
            logEntry.Level = Level.Debug.ToString();
            if (_logger.IsDebugEnabled)
                _logger.Debug(logEntry);
        }

        private void SwitchOffLogTargets(LogTarget targets)
        {
            var appenders = _logger.Logger.Repository.GetAppenders().ToList();

            if (!targets.HasFlag(LogTarget.Database))
            {
                var db = appenders.FirstOrDefault(piA => piA is AdoNetAppender);
                if (db != null)
                    ((AdoNetAppender)db).AddFilter(new DenyAllFilter());
            }

            if (!targets.HasFlag(LogTarget.TextFile))
            {
                var file = appenders.FirstOrDefault(piA => piA is RollingFileAppender);
                if (file != null)
                    ((RollingFileAppender)file).AddFilter(new DenyAllFilter());
            }

            if (!targets.HasFlag(LogTarget.Trace))
            {
                var trace = appenders.FirstOrDefault(piA => piA is AspNetTraceAppender);
                if (trace != null)
                    ((AspNetTraceAppender)trace).AddFilter(new DenyAllFilter());
            }

        }
    }
}

事实证明,我最近的尝试奏效了。我只是拼错了配置文件名。我希望这对将来的人有所帮助。我计划写一篇关于这个的博客文章。

Log4Net.config

<?xml version="1.0" encoding="utf-8" ?>
<log4net>
  <root>
    <level value="ALL" debug="true"/>
    <!--Add the appenders you want to use here-->
    <appender-ref ref="AdoNetAppender"/>
    <!--to debug log4net. check the output window of Visual Studio-->
    <appender-ref ref="DebugAppender"/>
  </root>
  <appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">
    <bufferSize value="1" />
    <connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
    <connectionString value="data source=(localdb)\MSSQLLocalDB;initial catalog=log4NetTestDB;integrated security=false;persist security info=True;" />
    <commandText value="INSERT INTO LogException ([Message]) VALUES (@message)" />
      <parameter>
        <parameterName value="@message" />
        <dbType value="String" />
        <size value="4000" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%message" />
        </layout>
      </parameter>
  </appender>
</log4net>

ILoggingAdapter

namespace Logging
{
    public interface ILoggingAdapter
    {
        TimeSpan ExecutionTime { get; set; }
        int Counter { get; set; }
        void Info(string message);
        void Warn(string message);

    }
}

记录器

namespace Logging
{
    public sealed class Logger : ILoggingAdapter
    {
        private ILog _log = LogManager.GetLogger(typeof(Logger));

        public TimeSpan ExecutionTime { get; set; }
        public int Counter { get; set; }
        public string Info { get; set; }
        public string Warn { get; set; }


        void ILoggingAdapter.Info(string message)
        {
            throw new NotImplementedException();
        }

        void ILoggingAdapter.Warn(string message)
        {
            _log.Warn(message);
        }
    }
}

1 回复 | 直到 7 年前

1

3

George Mauer 7 年前

好的,有几个注释

您是否尝试以指定用户的身份登录到数据库并运行所需的插入查询?
enabling debug mode 在log4net中查看引擎盖下发生了什么?
与上述内容相关,在根目录下使用两个记录器——一个用于数据库,另一个用于文件。这是一个 可怕的 只使用数据库日志记录的想法,因为如果数据库失败,您将不会得到关于它失败的日志。至少,您的本地开发环境应该记录到一个文件中
beefycoder has written a ton about understanding log4net
我不知道你为什么要做这样的事情 if (_logger.IsInfoEnabled) -就是这样 LogInfo 已经
你究竟为什么要 LogEntry 作为参数类型?使用这样的服务类的全部目的是打破对log4net的硬依赖。通过使用该类类型,您已经在您的消费者中创建了对log4net的硬依赖。只需输入字符串。这样你就不需要整个 logEntry.Level = Level.Warn.ToString();
文件中的硬编码路径字符串。这在其他开发人员的机器上不起作用。
构造器中的堆栈检查-您现在已经显著降低了使用该方法的任何类的构造速度, 和当在内联打开的情况下以发布模式构建时,它会给你带来不同的结果。与其使用服务类,不如创建一个扩展方法,或者传入你希望记录器作为一个参数来源的对象,该参数做同样的事情。
SwitchOffLogTargets