我已打开调试,所以我很确定它正在连接到数据库.我之所以这样说是因为,如果我拼错数据库名称,则会在输出时写入错误.
我不确定自己在做什么错.我知道我尚未使用参数.
我所做的就是将this tutorial修改为一个项目.如果您需要更多信息,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>
Log4netLoggingService.cs
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());
}
}
}
}
更新：
事实证明,我的最新尝试有效.我只是拼错了配置文件名.我希望这对以后的人有所帮助.我计划撰写有关此内容的博客文章.
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);
}
}
记录仪
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);
}
}
}
解决方法:
好了,有几个音符
>您是否尝试过以指定用户身份登录数据库并运行所需的插入查询？
>您是否尝试过在log4net中使用enabling debug mode来查看幕后情况？
>与上述内容相关,请在根目录使用两个记录器-一个用于数据库,另一个用于文件.仅使用数据库日志记录是一个糟糕的主意,因为如果数据库失败,您将不会收到有关它失败的日志.至少,您的本地开发环境应记录到文件
> beefycoder has written a ton about understanding log4net请注意该教程的许多部分
>我不知道您为什么要执行if(_logger.IsInfoEnabled)之类的工作-这就是LogInfo已经完成的工作.
>为什么您实际上将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的硬依赖性.通过使用该类类型,您刚刚在使用者中创建了对log4net的硬依赖性.只需传递字符串即可.同样,您将不需要整个logEntry.Level = Level.Warn.ToString();.废话
>文件中的硬编码路径字符串.现在,这将无法在其他开发人员的计算机上运行.
>构造函数中的堆栈检查-您现在已大大降低了使用该类的所有类的构造,并且在启用内联的RELEASE模式下构建时,它将为您提供不同的结果.无需使用服务类,只需创建一个扩展方法或将您希望记录器作为来源的对象作为相同功能的参数传递即可.
>您的代码配置将覆盖xml配置(我认为… log4net的优先顺序规则很模糊-这就是我偏爱NLog的主要原因)
> SwitchOffLogTargets为什么！？如果您想要这种行为,只需更改配置文件.配置文件可以定义所需的目标并可以随时更改,但是在这里您只是假设它恰好包含某些东西.