log4net 入门教程
1、下载dll
下载地址：http://mirror.reverse.net/pub/apache/logging/log4net/binaries/
github:https://github.com/apache/logging-log4net
2、添加引用
添加log4net.dll的引用（bin\net\2.0\release 不能引用debug版本 不一定是2.0，找对应的net版本）
3、修改配置文件
在web.Config(或app.Config)添加配置，见下文
配置分两步：
1.
<------放到字节下的 <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>字节下--------->
2.
<------放到字节下--------->
<log4net> <root> <level value="WARN"/> <appender-ref ref="SysAppender"/> root> <logger name="WebLogger"> <level value="DEBUG"/> logger> <appender name="SysAppender" type="log4net.Appender.RollingFileAppender,log4net" > <param name="File" value="App_Data/" /> <param name="AppendToFile" value="true" /> <param name="RollingStyle" value="Date" /> <param name="DatePattern" value=""Logs_"yyyyMMdd".txt"" /> <param name="StaticLogFileName" value="false" /> <layout type="log4net.Layout.PatternLayout,log4net"> <param name="ConversionPattern" value="%d [%t] %-5p %c - %m%n" /> <param name="Header" value=" ----------------------header-------------------------- " /> <param name="Footer" value=" ----------------------footer-------------------------- " /> layout> appender> <appender name="consoleApp" type="log4net.Appender.ConsoleAppender,log4net"> <layout type="log4net.Layout.PatternLayout,log4net"> <param name="ConversionPattern" value="%d [%t] %-5p %c - %m%n" /> layout> appender> log4net>
4、初始化：
在程序最开始加入log4net.Config.XmlConfigurator.Configure();不要加入页面的load
5、调用：
ILog logger = LogManager.GetLogger("errorMsg"); logger.Error(errorMsg);//将异常信息写到磁盘上.
实例代码：
web.Config
<?xml version="1.0" encoding="utf-8"?> <configuration> <configSections> <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=5.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" /> <sectionGroup name="spring"> <section name="context" type="Spring.Context.Support.MvcContextHandler, Spring.Web.Mvc4"/> sectionGroup> <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/> configSections> <spring> <context> <resource uri="file://~/Config/controllers.xml"/> <resource uri="file://~/Config/service.xml"/> context> spring> <log4net> <root> <level value="WARN"/> <appender-ref ref="SysAppender"/> root> <logger name="WebLogger"> <level value="DEBUG"/> logger> <appender name="SysAppender" type="log4net.Appender.RollingFileAppender,log4net" > <param name="File" value="App_Data/" /> <param name="AppendToFile" value="true" /> <param name="RollingStyle" value="Date" /> <param name="DatePattern" value=""Logs_"yyyyMMdd".txt"" /> <param name="StaticLogFileName" value="false" /> <layout type="log4net.Layout.PatternLayout,log4net"> <param name="ConversionPattern" value="%d [%t] %-5p %c - %m%n" /> <param name="Header" value=" ----------------------header-------------------------- " /> <param name="Footer" value=" ----------------------footer-------------------------- " /> layout> appender> <appender name="consoleApp" type="log4net.Appender.ConsoleAppender,log4net"> <layout type="log4net.Layout.PatternLayout,log4net"> <param name="ConversionPattern" value="%d [%t] %-5p %c - %m%n" /> layout> appender> log4net> <connectionStrings> <add name="DefaultConnection" providerName="System.Data.SqlClient" connectionString="Data Source=(LocalDb)\v11.0;Initial Catalog=aspnet-CZBK.HeiMaOA.WebApp-20140915093444;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|\aspnet-CZBK.HeiMaOA.WebApp-20140915093444.mdf" /> <add name="OAEntities" connectionString="metadata=res://*/Model1.csdl|res://*/Model1.ssdl|res://*/Model1.msl;provider=System.Data.SqlClient;provider connection string="data source=.;initial catalog=OA;user id=home;MultipleActiveResultSets=True;App=EntityFramework"" providerName="System.Data.EntityClient" /> connectionStrings> <appSettings> <add key="webpages:Version" value="2.0.0.0" /> <add key="webpages:Enabled" value="false" /> <add key="PreserveLoginUrl" value="true" /> <add key="ClientValidationEnabled" value="true" /> <add key="UnobtrusiveJavaScriptEnabled" value="true" /> <add key="DalNameSpace" value="CZBK.HeiMaOA.DAL"/> <add key="DalAssembly" value="CZBK.HeiMaOA.DAL"/> <add key="workflowConnection" value="server=.;uid=home;pwd=;database=OA"/> appSettings> <system.web> <httpRuntime targetFramework="4.5" /> <compilation debug="true" targetFramework="4.5" /> <authentication mode="Forms"> <forms loginUrl="~/Account/Login" timeout="2880" /> authentication> <pages> <namespaces> <add namespace="System.Web.Helpers" /> <add namespace="System.Web.Mvc" /> <add namespace="System.Web.Mvc.Ajax" /> <add namespace="System.Web.Mvc.Html" /> <add namespace="System.Web.Optimization" /> <add namespace="System.Web.Routing" /> <add namespace="System.Web.WebPages" /> namespaces> pages> <profile defaultProvider="DefaultProfileProvider"> <providers> <add name="DefaultProfileProvider" type="System.Web.Providers.DefaultProfileProvider, System.Web.Providers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" connectionStringName="DefaultConnection" applicationName="/" /> providers> profile> <membership defaultProvider="DefaultMembershipProvider"> <providers> <add name="DefaultMembershipProvider" type="System.Web.Providers.DefaultMembershipProvider, System.Web.Providers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" connectionStringName="DefaultConnection" enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="false" requiresUniqueEmail="false" maxInvalidPasswordAttempts="5" minRequiredPasswordLength="6" minRequiredNonalphanumericCharacters="0" passwordAttemptWindow="10" applicationName="/" /> providers> membership> <roleManager defaultProvider="DefaultRoleProvider"> <providers> <add name="DefaultRoleProvider" type="System.Web.Providers.DefaultRoleProvider, System.Web.Providers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" connectionStringName="DefaultConnection" applicationName="/" /> providers> roleManager> <sessionState mode="InProc" customProvider="DefaultSessionProvider"> <providers> <add name="DefaultSessionProvider" type="System.Web.Providers.DefaultSessionStateProvider, System.Web.Providers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" connectionStringName="DefaultConnection" /> providers> sessionState> system.web> <system.webServer> <validation validateIntegratedModeConfiguration="false" /> <handlers> <remove name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" /> <remove name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" /> <remove name="ExtensionlessUrlHandler-Integrated-4.0" /> <add name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness32" responseBufferLimit="0" /> <add name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness64" responseBufferLimit="0" /> <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" /> handlers> system.webServer> <runtime> <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1"> <dependentAssembly> <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" /> <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" /> dependentAssembly> <dependentAssembly> <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" /> <bindingRedirect oldVersion="1.0.0.0-4.0.0.0" newVersion="4.0.0.0" /> dependentAssembly> <dependentAssembly> <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" /> <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" /> dependentAssembly> assemblyBinding> runtime> <entityFramework> <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" /> entityFramework> configuration>
<?xml version="1.0" encoding="utf-8" ?> <configuration> <configSections> <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net" /> configSections> <log4net debug="true"> <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender"> <threshold value="INFO"/> <file value="D:\[Publish_log]\SNS_Test\RollingLog.log"/> <appendToFile value="true"/> <maxSizeRollBackups value="10"/> <maximumFileSize value="100"/> <rollingStyle value="Size"/> <staticLogFileName value="true"/> <layout type="log4net.Layout.PatternLayout"> <header value="[Header] "/> <footer value="[Footer] "/> <conversionPattern value="%date [%thread] %-5level %logger [%ndc] - %message%newline"/> layout> appender> <appender name="LogFileAppender" type="log4net.Appender.RollingFileAppender"> <threshold value="ALL"/> <file value="D:\[Publish_log]\SNS_Test\Debug"/> <appendToFile value="true"/> <rollingStyle value="Date"/> <DatePattern value="yyyy-MM-dd".log""/> <staticLogFileName value="false"/> <layout type="log4net.Layout.PatternLayout"> <header value="[Header] "/> <footer value="[Footer] "/> <conversionPattern value="%date [%thread] %-5level %logger [%ndc] <%property{auth}> - %message%newline"/> layout> <filter type="log4net.Filter.LevelRangeFilter"> <param name="LevelMin" value="INFO" /> <param name="LevelMax" value="FATAL" /> filter> appender> <appender name="SmtpAppender" type="log4net.Appender.SmtpAppender"> <threshold value="FATAL"/> <layout type="log4net.Layout.PatternLayout" value="%date [%thread] %-5level %logger - %message%newline"/> <subject value="%-5level %logger"/> <to value="william@sina.com"/> <from value="sdf@qq.com"/> <smtpHost value="mail.qq.com"/> appender> <appender name="PortalMessageLogFileAppender" type="log4net.Appender.RollingFileAppender"> <threshold value="ALL"/> <file value="D:\[Publish_log]\SNS_Test\PortalMessageLog"/> <appendToFile value="true"/> <rollingStyle value="Date"/> <DatePattern value="yyyy-MM-dd".log""/> <staticLogFileName value="false"/> <layout type="log4net.Layout.PatternLayout"> <conversionPattern value="%date %-5level - %message%newline"/> layout> appender> <appender name="CacheLogFileAppender" type="log4net.Appender.RollingFileAppender"> <threshold value="ALL"/> <file value="D:\[Publish_log]\SNS_Test\CacheLog"/> <appendToFile value="true"/> <rollingStyle value="Date"/> <DatePattern value="yyyy-MM-dd".log""/> <staticLogFileName value="false"/> <layout type="log4net.Layout.PatternLayout"> <conversionPattern value="%date %-5level - %message%newline"/> layout> appender> <appender name="MessageMonitorLogFileAppender" type="log4net.Appender.RollingFileAppender"> <threshold value="ALL"/> <file value="D:\[Publish_log]\SNS_Test\MessageMonitorLog"/> <appendToFile value="true"/> <rollingStyle value="Date"/> <DatePattern value="yyyy-MM-dd".log""/> <staticLogFileName value="false"/> <layout type="log4net.Layout.PatternLayout"> <conversionPattern value="%date %-5level - %message%newline"/> layout> appender> <root> <level value="ALL"/> <appender-ref ref="LogFileAppender"/> <appender-ref ref="SmtpAppender"/> root> <logger name="PortalMessageLog" additivity="false"> <level value="ALL"/> <appender-ref ref="PortalMessageLogFileAppender"/> logger> <logger name="CacheLog" additivity="false"> <level value="ALL"/> <appender-ref ref="CacheLogFileAppender"/> logger> <logger name="MessageMonitorLog" additivity="false"> <level value="ALL"/> <appender-ref ref="MessageMonitorLogFileAppender"/> logger> log4net> configuration>
程序的最开始 Global.asax.cs
using CZBK.HeiMaOA.WebApp.Models; using log4net; using Spring.Web.Mvc; using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Text; using System.Threading; using System.Web; using System.Web.Http; using System.Web.Mvc; using System.Web.Optimization; using System.Web.Routing; namespace CZBK.HeiMaOA.WebApp { // 注意: 有关启用 IIS6 或 IIS7 经典模式的说明， // 请访问 http://go.microsoft.com/?LinkId=9394801 public class MvcApplication : SpringMvcApplication//System.Web.HttpApplication { protected void Application_Start() { IndexManager.GetInstance().CreateThread();//开启线程，扫描队列获取图书的信息写到Lucene.Net中。 log4net.Config.XmlConfigurator.Configure();//读取Log4Net配置信息 AreaRegistration.RegisterAllAreas(); WebApiConfig.Register(GlobalConfiguration.Configuration); FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters); RouteConfig.RegisterRoutes(RouteTable.Routes); BundleConfig.RegisterBundles(BundleTable.Bundles); string fileLogPath = Server.MapPath("/Log/");//指定用来保存错误日志文件的文件夹路径. //开启一个线程扫描日志队列 ThreadPool.QueueUserWorkItem((a) => { while (true)//不断扫描日志队列. { // if (MyExceptionAttribute.exceptionQueue.Count() > 0)//判断队列中是否有数据 if (MyExceptionAttribute.redisClent.GetListCount("errorMsg") > 0) { //Exception ex= MyExceptionAttribute.exceptionQueue.Dequeue();//出队, string errorMsg = MyExceptionAttribute.redisClent.DequeueItemFromList("errorMsg"); if (!string.IsNullOrEmpty(errorMsg)) { string fileName = DateTime.Now.ToString("yyyy-MM-dd") + ".txt"; File.AppendAllText(fileLogPath + fileName, ex.ToString(), Encoding.Default);//将异常写到文件中。异常信息写到磁盘上. } else { Thread.Sleep(3000); } } else { Thread.Sleep(3000);//如果队列中没有数据，让当前线程休息，避免造成CUP空转. } } }, fileLogPath); } } }
demo 源码：
https://gitee.com/xiaoshi657/XmlDemo/tree/master/Log4NetDemo