标签：you object word 代码 spl dbf OLE done alt
众所周知，大多数情况下，业务需要记录的并不是简单的系统时间%date，级别%level，信息%message等字段，而是需要自定义的业务字段。以便后续的数据挖掘和钻取。
逐步研究发现Log4Net记录日志的info,error,debug等方法可以传入object参数：log.info(object message)。
下面记录一下，传一个自定义的业务日志对象给info方法，它自动帮我得到该业务对象的字段的值，然后再写入到数据库后台。
1、建立数据库和数据表
USE [Test] GO /****** Object: Table [dbo].[SysLogs] Script Date: 2020-05-02 22:07:49 ******/ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO CREATE TABLE [dbo].[SysLogs]( [ID] [int] IDENTITY(1,1) NOT NULL, [LogDate] [datetime] NULL, [Msg] [nvarchar](max) NULL, [UserName] [nvarchar](200) NULL, [ThreadName] [nvarchar](200) NULL, [Level] [nvarchar](200) NULL ) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY] GO
2、创建解决方案
3、核心代码
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace Log4NetDBDemo { class Program { static void Main(string[] args) { log4net.Config.XmlConfigurator.Configure(); log4net.ILog log = log4net.LogManager.GetLogger(typeof(Program)); Console.WriteLine("开始写日志_" + DateTime.Now.ToLongDateString()); log.Info(new LogContent { Msg = "测试Log4Net日志存入数据库", ThreadName = "控制台测试模块", UserName = "sysman" }); Console.WriteLine("日志写入成功_" + DateTime.Now.ToLongDateString()); Console.ReadKey(); } } }
using log4net.Layout.Pattern; using System; using System.Collections.Generic; using System.Linq; using System.Reflection; using System.Text; using System.Threading.Tasks; namespace Log4NetDBDemo { public class MyMsgPatternConverter : PatternLayoutConverter { protected override void Convert(System.IO.TextWriter writer, log4net.Core.LoggingEvent loggingEvent) { if (Option != null) { // Write the value for the specified key WriteObject(writer, loggingEvent.Repository, LookupProperty(Option, loggingEvent)); } else { // Write all the key value pairs WriteDictionary(writer, loggingEvent.Repository, loggingEvent.GetProperties()); } } /// <summary> /// 通过反射获取传入的日志对象的某个属性的值 /// </summary> /// <param name="property"></param> /// <returns></returns> private object LookupProperty(string property, log4net.Core.LoggingEvent loggingEvent) { object propertyValue = string.Empty; PropertyInfo propertyInfo = loggingEvent.MessageObject.GetType().GetProperty(property); if (propertyInfo != null) propertyValue = propertyInfo.GetValue(loggingEvent.MessageObject, null); return propertyValue; } } }
using log4net.Layout; using log4net.Layout.Pattern; using System; using System.Collections.Generic; using System.Linq; using System.Reflection; using System.Text; using System.Threading.Tasks; namespace Log4NetDBDemo { /// <summary> /// 自定义一个Layout，在该类的构造方法中将自定义的Converter加进去 /// 以便于处理property{}中的自定义字段)和一个PatternConverter: /// </summary> public class MyLayout : PatternLayout { public MyLayout() { this.AddConverter("property", typeof(MyMsgPatternConverter)); } } }
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace Log4NetDBDemo { /// <summary> /// 封装一个消息类，用来存放异常日志信息 /// </summary> public class LogContent { /// <summary> /// 日志消息详情 /// </summary> public string Msg { get; set; } /// <summary> /// 当前登录用户 /// </summary> public string UserName { get; set; } /// <summary> /// 线程名称/模块名称/菜单名称/节点名称等 /// </summary> public string ThreadName { get; set; } } }
<?xml version="1.0" encoding="utf-8" ?> <configuration> <configSections> <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net"/> </configSections> <log4net> <root> <level value="All" /> <!--介质类型：数据库--> <appender-ref ref="AdoNetAppender"/> </root> <!--介质类型配置：数据库相关配置--> <appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender"> <bufferSize value="1" /> <!--连接字符串--> <connectionType value="System.Data.SqlClient.SqlConnection,System.Data, Version=1.0.3300.0, Culture=neutral,PublicKeyToken=b77a5c561934e089" /> <!--连接字符串value--> <connectionString value="database=test;server=localhost;User ID=sa;Password=sa" /> <!--sql语句--> <commandText value="INSERT INTO SysLogs(LogDate,Msg,UserName,ThreadName,Level) VALUES (@LogDate,@Msg,@UserName,@ThreadName,@Level)" /> <!--定义一些业务逻辑对象的属性，以便写入到数据库后台--> <!--日志写入时间--> <parameter> <parameterName value="@LogDate" /> <dbType value="DateTime" /> <layout type="log4net.Layout.RawTimeStampLayout" /> </parameter> <!--日志内容--> <parameter> <parameterName value="@Msg" /> <dbType value="String" /> <size value="2000" /> <layout type="Log4NetDBDemo.MyLayout, Log4NetDBDemo"> <param name="ConversionPattern" value="%property{Msg}"/> </layout> </parameter> <!--用户名--> <parameter> <parameterName value="@UserName" /> <dbType value="String" /> <size value="200" /> <layout type="Log4NetDBDemo.MyLayout, Log4NetDBDemo" > <param name="ConversionPattern" value="%property{UserName}"/> </layout> </parameter> <!--进程、模块名称--> <parameter> <parameterName value="@ThreadName" /> <dbType value="String" /> <size value="200" /> <layout type="Log4NetDBDemo.MyLayout, Log4NetDBDemo" > <param name="ConversionPattern" value="%property{ThreadName}"/> </layout> </parameter> <!--Log4Net Level--> <parameter> <parameterName value="@Level" /> <dbType value="String" /> <size value="50" /> <layout type="log4net.Layout.PatternLayout" value="%level" /> </parameter> <!--定义一些业务逻辑对象的属性，以便写入到数据库后台 结束--> </appender> </log4net> </configuration>
注意：我这里执行了三次。
注意：
项目除了添加Log4Net.dll引用外还需要添加System.Data.dll引用。
参考资料：https://www.cnblogs.com/Arlen/archive/2008/11/22/1338908.html
标签：you object word 代码 spl dbf OLE done alt
原文地址：https://www.cnblogs.com/jeremywucnblog/p/12819964.html
