如何使用 Log4net 进行日志记录？
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【中文标题】如何使用 Log4net 进行日志记录？【英文标题】：How to logging with Log4net? 【发布时间】：2016-06-05 08:43:21 【问题描述】：我尝试使用 log4net 登录我的 wep 项目。对数据库使用 EntityFramework 和 LINQ。我将这些添加到 web.config 文件中
<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net" />
</configSections>
<log4net>
<logger name ="DBLogger">
<level value="ALL"></level>
<appender-ref ref="AdoNetAppender" />
</logger>
<appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">
<bufferSize value="100" />
<connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
<connectionString value="data source=localhost;initial catalog=CATALOG_NAME;persist security info=False;user id=DB_USER;password=DB_PASSWORD;MultipleActiveResultSets=True;App=EntityFramework" />
<commandText value="INSERT INTO RCN_OPERATION_LOGS ([DATE],[THREAD],[LEVEL],[LOGGER],[MESSAGE],[EXCEPTION]) VALUES (@log_date, @thread, @log_level, @logger, @message, @exception)" />
<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 ip=%propertyip" />
</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>
</appender>
</log4net>
<system.diagnostics>
<trace autoflush="true">
<listeners>
<add
name="textWriterTraceListener" type="System.Diagnostics.TextWriterTraceListener" initializeData="C:\HttpRoot\FITMutabakat\log4net_debug.txt" />
</listeners>
</trace>
</system.diagnostics>
<appSettings>
<add key="log4net.Internal.Debug" value="true" />
<add key="log4net.Config" value="log4net.config"/>
<add key="log4net.Config.Watch" value="True"/>
</appSettings>
将此行添加到 AssemblyInfo.cs:
[程序集：log4net.Config.XmlConfigurator(ConfigFile = "web.config", Watch = true)]
还有Global.asax.cs：
protected void Application_Start(object sender, EventArgs e)
log4net.Config.XmlConfigurator.Configure();
我创建了一个这样的 Logger 类；
using log4net;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
namespace FITMutabakat.BLL.Base
public class Logger : Manager
private static readonly ILog logger = LogManager.GetLogger("DBLogger");
public void AddLog(string user, string loggertype, string logprocess, string mesaj, string data, Exception ex)
LoggerAdd(logger, loggertype, logprocess, user, data, mesaj, ex);
this.Context.SaveChanges();
public static void LoggerAdd(log4net.ILog logger, string LoggerType, string LogProcess, string User, string Data, string LogMessage, System.Exception Ex)
try
if (LoggerType == "InfoFormat")
object[] args = new object[4];
logger.Info("sdf");
if (Data != null)
args[0] = LogProcess;
args[1] = User;
args[2] = Data;
args[3] = LogMessage;
logger.InfoFormat("[0] [1] [2] [3]", args);
else
args[0] = LogProcess;
args[1] = User;
args[2] = LogMessage;
logger.InfoFormat("[0] [1] [2] ", args);
else if (LoggerType == "Fatal")
if (Data != null)
object[] args = new object[4];
args[0] = LogProcess;
args[1] = User;
args[2] = Data;
args[3] = LogMessage;
string ermes = string.Format("[0] [1] [2] [3]", args);
logger.Fatal(ermes, Ex);
else
object[] args = new object[4];
args[0] = LogProcess;
args[1] = User;
args[2] = LogMessage;
string ermes = string.Format("[0] [1] [2] ", args);
logger.Fatal(ermes, Ex);
catch (Exception ex)
throw ex;
用户登录时调用Logger类：
Logger logger = new Logger();
logger.AddLog(oUser.USERNAME, "InfoFormat", "KullanıcıIslem", "Kullanıcı sisteme giriş yaptı.", null, null);
但是任何日志都添加到数据库中。哪里有问题，没找到。 当程序运行 log4net 时，将这些写入调试文件但出现任何错误。
log4net: log4net assembly [log4net, Version=1.2.15.0, Culture=neutral, PublicKeyToken=669e0ddf0bb1aa2a]. Loaded from [C:\Users\admin\AppData\Local\Temp\Temporary ASP.NET Files\vs\05d71218\bc109529\assembly\dl3\d1df1039\3eae6e67_6b57d101\log4net.dll]. (.NET Runtime [4.0.30319.34209] on Microsoft Windows NT 6.2.9200.0)
log4net: defaultRepositoryType [log4net.Repository.Hierarchy.Hierarchy]
log4net: Creating repository for assembly [FITMutabakat, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]
log4net: Assembly [FITMutabakat, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null] Loaded From [C:\Users\admin\AppData\Local\Temp\Temporary ASP.NET Files\vs\05d71218\bc109529\assembly\dl3\a6a085ea\52e3a93b_3a6ed101\FITMutabakat.dll]
log4net: Assembly [FITMutabakat, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null] does not have a RepositoryAttribute specified.
log4net: Assembly [FITMutabakat, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null] using repository [log4net-default-repository] and repository type [log4net.Repository.Hierarchy.Hierarchy]
log4net: Creating repository [log4net-default-repository] using type [log4net.Repository.Hierarchy.Hierarchy]
log4net: configuring repository [log4net-default-repository] using file [C:\HttpRoot\FITMutabakat\FITMutabakat\web.config] watching for file updates
log4net: configuring repository [log4net-default-repository] using file [C:\HttpRoot\FITMutabakat\FITMutabakat\web.config]
log4net: configuring repository [log4net-default-repository] using stream
log4net: loading XML configuration
log4net: Configuring Repository [log4net-default-repository]
log4net: Configuration update mode [Merge].
log4net: Retrieving an instance of log4net.Repository.Logger for logger [DBLogger].
log4net: Setting [DBLogger] additivity to [True].
log4net: Logger [DBLogger] Level string is [ALL].
log4net: Logger [DBLogger] level set to [name="ALL",value=-2147483648].
log4net: Loading Appender [AdoNetAppender] type: [log4net.Appender.AdoNetAppender]
log4net: Setting Property [BufferSize] to Int32 value [100]
log4net: Setting Property [ConnectionType] to String value [System.Data.SqlClient.SqlConnection, System.Data, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]
log4net: Setting Property [ConnectionString] to String value [data source=localhost;initial catalog=MUTABAKAT_DEV;persist security info=False;user id=sa;password=369900;MultipleActiveResultSets=True;App=EntityFramework]
log4net: Setting Property [CommandText] to String value [INSERT INTO RCN_OPERATION_LOGS ([DATE],[THREAD],[LEVEL],[LOGGER],[MESSAGE],[EXCEPTION]) VALUES (@log_date, @thread, @log_level, @logger, @message, @exception)]
log4net: Setting Property [ParameterName] to String value [@log_date]
log4net: Setting Property [DbType] to DbType value [DateTime]
log4net: Setting Property [Layout] to object [log4net.Layout.RawTimeStampLayout]
log4net: Setting Collection Property [AddParameter] to object [log4net.Appender.AdoNetAppenderParameter]
log4net: Setting Property [ParameterName] to String value [@thread]
log4net: Setting Property [DbType] to DbType value [String]
log4net: Setting Property [Size] to Int32 value [255]
log4net: Converter [message] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Converter [newline] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Setting Property [ConversionPattern] to String value [%thread ip=%propertyip]
log4net: Converter [thread] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Converter [literal] Option [ ip=] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Converter [property] Option [ip] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Setting Property [Layout] to object [log4net.Layout.Layout2RawLayoutAdapter]
log4net: Setting Collection Property [AddParameter] to object [log4net.Appender.AdoNetAppenderParameter]
log4net: Setting Property [ParameterName] to String value [@log_level]
log4net: Setting Property [DbType] to DbType value [String]
log4net: Setting Property [Size] to Int32 value [50]
log4net: Converter [message] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Converter [newline] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Setting Property [ConversionPattern] to String value [%level]
log4net: Converter [level] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Setting Property [Layout] to object [log4net.Layout.Layout2RawLayoutAdapter]
log4net: Setting Collection Property [AddParameter] to object [log4net.Appender.AdoNetAppenderParameter]
log4net: Setting Property [ParameterName] to String value [@logger]
log4net: Setting Property [DbType] to DbType value [String]
log4net: Setting Property [Size] to Int32 value [255]
log4net: Converter [message] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Converter [newline] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Setting Property [ConversionPattern] to String value [%logger]
log4net: Converter [logger] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Setting Property [Layout] to object [log4net.Layout.Layout2RawLayoutAdapter]
log4net: Setting Collection Property [AddParameter] to object [log4net.Appender.AdoNetAppenderParameter]
log4net: Setting Property [ParameterName] to String value [@message]
log4net: Setting Property [DbType] to DbType value [String]
log4net: Setting Property [Size] to Int32 value [4000]
log4net: Converter [message] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Converter [newline] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Setting Property [ConversionPattern] to String value [%message]
log4net: Converter [message] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Setting Property [Layout] to object [log4net.Layout.Layout2RawLayoutAdapter]
log4net: Setting Collection Property [AddParameter] to object [log4net.Appender.AdoNetAppenderParameter]
log4net: Setting Property [ParameterName] to String value [@exception]
log4net: Setting Property [DbType] to DbType value [String]
log4net: Setting Property [Size] to Int32 value [2000]
log4net: Setting Property [Layout] to object [log4net.Layout.Layout2RawLayoutAdapter]
log4net: Setting Collection Property [AddParameter] to object [log4net.Appender.AdoNetAppenderParameter]
log4net: Created Appender [AdoNetAppender]
log4net: Adding appender named [AdoNetAppender] to logger [DBLogger].
log4net: Hierarchy Threshold []
log4net: Loading and watching configuration for default repository from AppSettings specified Config path [C:\HttpRoot\FITMutabakat\FITMutabakat\log4net.config]
log4net: configuring repository [log4net-default-repository] using file [C:\HttpRoot\FITMutabakat\FITMutabakat\log4net.config] watching for file updates
log4net: configuring repository [log4net-default-repository] using file [C:\HttpRoot\FITMutabakat\FITMutabakat\log4net.config]
log4net: configuring repository [log4net-default-repository] using stream
log4net: loading XML configuration
log4net: Configuring Repository [log4net-default-repository]
log4net: Configuration update mode [Merge].
log4net: Logger [root] Level string is [ALL].
log4net: Logger [root] level set to [name="ALL",value=-2147483648].
log4net: Loading Appender [AdoNetAppender] type: [log4net.Appender.AdoNetAppender]
log4net: Setting Property [BufferSize] to Int32 value [100]
log4net: Setting Property [ConnectionType] to String value [System.Data.SqlClient.SqlConnection, System.Data, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]
log4net: Setting Property [ConnectionString] to String value [data source=localhost;initial catalog=MUTABAKAT_DEV;persist security info=False;user id=sa;password=369900;MultipleActiveResultSets=True;App=EntityFramework]
log4net: Setting Property [CommandText] to String value [INSERT INTO RCN_OPERATION_LOGS ([DATE],[THREAD],[LEVEL],[LOGGER],[MESSAGE],[EXCEPTION]) VALUES (@log_date, @thread, @log_level, @logger, @message, @exception)]
log4net: Setting Property [ParameterName] to String value [@log_date]
log4net: Setting Property [DbType] to DbType value [DateTime]
log4net: Setting Property [Layout] to object [log4net.Layout.RawTimeStampLayout]
log4net: Setting Collection Property [AddParameter] to object [log4net.Appender.AdoNetAppenderParameter]
log4net: Setting Property [ParameterName] to String value [@thread]
log4net: Setting Property [DbType] to DbType value [String]
log4net: Setting Property [Size] to Int32 value [255]
log4net: Converter [message] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Converter [newline] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Setting Property [ConversionPattern] to String value [%thread ip=%propertyip]
log4net: Converter [thread] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Converter [literal] Option [ ip=] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Converter [property] Option [ip] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Setting Property [Layout] to object [log4net.Layout.Layout2RawLayoutAdapter]
log4net: Setting Collection Property [AddParameter] to object [log4net.Appender.AdoNetAppenderParameter]
log4net: Setting Property [ParameterName] to String value [@log_level]
log4net: Setting Property [DbType] to DbType value [String]
log4net: Setting Property [Size] to Int32 value [50]
log4net: Converter [message] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Converter [newline] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Setting Property [ConversionPattern] to String value [%level]
log4net: Converter [level] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Setting Property [Layout] to object [log4net.Layout.Layout2RawLayoutAdapter]
log4net: Setting Collection Property [AddParameter] to object [log4net.Appender.AdoNetAppenderParameter]
log4net: Setting Property [ParameterName] to String value [@logger]
log4net: Setting Property [DbType] to DbType value [String]
log4net: Setting Property [Size] to Int32 value [255]
log4net: Converter [message] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Converter [newline] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Setting Property [ConversionPattern] to String value [%logger]
log4net: Converter [logger] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Setting Property [Layout] to object [log4net.Layout.Layout2RawLayoutAdapter]
log4net: Setting Collection Property [AddParameter] to object [log4net.Appender.AdoNetAppenderParameter]
log4net: Setting Property [ParameterName] to String value [@message]
log4net: Setting Property [DbType] to DbType value [String]
log4net: Setting Property [Size] to Int32 value [4000]
log4net: Converter [message] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Converter [newline] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Setting Property [ConversionPattern] to String value [%message]
log4net: Converter [message] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Setting Property [Layout] to object [log4net.Layout.Layout2RawLayoutAdapter]
log4net: Setting Collection Property [AddParameter] to object [log4net.Appender.AdoNetAppenderParameter]
log4net: Setting Property [ParameterName] to String value [@exception]
log4net: Setting Property [DbType] to DbType value [String]
log4net: Setting Property [Size] to Int32 value [2000]
log4net: Setting Property [Layout] to object [log4net.Layout.Layout2RawLayoutAdapter]
log4net: Setting Collection Property [AddParameter] to object [log4net.Appender.AdoNetAppenderParameter]
log4net: Created Appender [AdoNetAppender]
log4net: Adding appender named [AdoNetAppender] to logger [root].
log4net: Hierarchy Threshold []
log4net: configuring repository [log4net-default-repository] using .config file section
log4net: Application config file is [C:\HttpRoot\FITMutabakat\FITMutabakat\web.config]
log4net: Configuring Repository [log4net-default-repository]
log4net: Configuration update mode [Merge].
log4net: Retrieving an instance of log4net.Repository.Logger for logger [DBLogger].
log4net: Setting [DBLogger] additivity to [True].
log4net: Logger [DBLogger] Level string is [ALL].
log4net: Logger [DBLogger] level set to [name="ALL",value=-2147483648].
log4net: Loading Appender [AdoNetAppender] type: [log4net.Appender.AdoNetAppender]
log4net: Setting Property [BufferSize] to Int32 value [100]
log4net: Setting Property [ConnectionType] to String value [System.Data.SqlClient.SqlConnection, System.Data, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]
log4net: Setting Property [ConnectionString] to String value [data source=localhost;initial catalog=MUTABAKAT_DEV;persist security info=False;user id=sa;password=369900;MultipleActiveResultSets=True;App=EntityFramework]
log4net: Setting Property [CommandText] to String value [INSERT INTO RCN_OPERATION_LOGS ([DATE],[THREAD],[LEVEL],[LOGGER],[MESSAGE],[EXCEPTION]) VALUES (@log_date, @thread, @log_level, @logger, @message, @exception)]
log4net: Setting Property [ParameterName] to String value [@log_date]
log4net: Setting Property [DbType] to DbType value [DateTime]
log4net: Setting Property [Layout] to object [log4net.Layout.RawTimeStampLayout]
log4net: Setting Collection Property [AddParameter] to object [log4net.Appender.AdoNetAppenderParameter]
log4net: Setting Property [ParameterName] to String value [@thread]
log4net: Setting Property [DbType] to DbType value [String]
log4net: Setting Property [Size] to Int32 value [255]
log4net: Converter [message] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Converter [newline] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Setting Property [ConversionPattern] to String value [%thread ip=%propertyip]
log4net: Converter [thread] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Converter [literal] Option [ ip=] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Converter [property] Option [ip] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Setting Property [Layout] to object [log4net.Layout.Layout2RawLayoutAdapter]
log4net: Setting Collection Property [AddParameter] to object [log4net.Appender.AdoNetAppenderParameter]
log4net: Setting Property [ParameterName] to String value [@log_level]
log4net: Setting Property [DbType] to DbType value [String]
log4net: Setting Property [Size] to Int32 value [50]
log4net: Converter [message] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Converter [newline] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Setting Property [ConversionPattern] to String value [%level]
log4net: Converter [level] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Setting Property [Layout] to object [log4net.Layout.Layout2RawLayoutAdapter]
log4net: Setting Collection Property [AddParameter] to object [log4net.Appender.AdoNetAppenderParameter]
log4net: Setting Property [ParameterName] to String value [@logger]
log4net: Setting Property [DbType] to DbType value [String]
log4net: Setting Property [Size] to Int32 value [255]
log4net: Converter [message] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Converter [newline] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Setting Property [ConversionPattern] to String value [%logger]
log4net: Converter [logger] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Setting Property [Layout] to object [log4net.Layout.Layout2RawLayoutAdapter]
log4net: Setting Collection Property [AddParameter] to object [log4net.Appender.AdoNetAppenderParameter]
log4net: Setting Property [ParameterName] to String value [@message]
log4net: Setting Property [DbType] to DbType value [String]
log4net: Setting Property [Size] to Int32 value [4000]
log4net: Converter [message] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Converter [newline] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Setting Property [ConversionPattern] to String value [%message]
log4net: Converter [message] Option [] Format [min=-1,max=2147483647,leftAlign=False]
log4net: Setting Property [Layout] to object [log4net.Layout.Layout2RawLayoutAdapter]
log4net: Setting Collection Property [AddParameter] to object [log4net.Appender.AdoNetAppenderParameter]
log4net: Setting Property [ParameterName] to String value [@exception]
log4net: Setting Property [DbType] to DbType value [String]
log4net: Setting Property [Size] to Int32 value [2000]
log4net: Setting Property [Layout] to object [log4net.Layout.Layout2RawLayoutAdapter]
log4net: Setting Collection Property [AddParameter] to object [log4net.Appender.AdoNetAppenderParameter]
log4net: Created Appender [AdoNetAppender]
log4net: Adding appender named [AdoNetAppender] to logger [DBLogger].
log4net: Hierarchy Threshold []
log4net: Creating repository for assembly [FITMutabakat.BLL, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]
log4net: Assembly [FITMutabakat.BLL, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null] Loaded From [C:\Users\admin\AppData\Local\Temp\Temporary ASP.NET Files\vs\05d71218\bc109529\assembly\dl3\4f082a23\1998a73a_3a6ed101\FITMutabakat.BLL.dll]
log4net: Assembly [FITMutabakat.BLL, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null] does not have a RepositoryAttribute specified.
log4net: Assembly [FITMutabakat.BLL, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null] using repository [log4net-default-repository] and repository type [log4net.Repository.Hierarchy.Hierarchy]
log4net: repository [log4net-default-repository] already exists, using repository type [log4net.Repository.Hierarchy.Hierarchy]
【问题讨论】：
你的帖子太短了。 看这个。我找到的最好的 log4net 教程。 youtube.com/watch?v=2lAdQ_QwNww 您的数据库密码在 log4net 输出中。 【参考方案1】：我可以看到一些可能丢失的内容，这可能是您的记录器无法正常工作的原因。
首先，在 Global.asax.cs 文件中，我会：
private static readonly ILog log = LogManager.GetLogger(typeof(MvcApplication));
void Application_Error(Object sender, EventArgs e)
Exception ex = Server.GetLastError().GetBaseException();
log.Error("App_Error", ex);
protected void Application_Start()
log4net.Config.XmlConfigurator.Configure();
然后在 web.config 文件中，我看不到您在任何地方的 log4net 标记中都有 <root> 标记。看起来你正试图用<logger> 来做这件事，我不确定它来自哪里。此外，我会将缓冲区大小从 100 更改为 1（因此，与其在写入数据库之前等待 100，不如将其写入每个日志）。我会将整个部分更改为：
<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net" />
</configSections>
<log4net debug="true">
<appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">
<bufferSize value="1" />
<connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
<connectionString value="data source=localhost;initial catalog=CATALOG_NAME;persist security info=False;user id=DB_USER;password=DB_PASSWORD;MultipleActiveResultSets=True;App=EntityFramework" />
<commandText value="INSERT INTO RCN_OPERATION_LOGS ([DATE],[THREAD],[LEVEL],[LOGGER],[MESSAGE],[EXCEPTION]) VALUES (@log_date, @thread, @log_level, @logger, @message, @exception)" />
<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 ip=%propertyip" />
</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>
</appender>
<root>
<level value="ALL" />
<appender-ref ref="AdoNetAppender" />
</root>
</log4net>
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