.Net Core3.1 MVC + EF Core+ AutoFac+LayUI+Sqlserver的框架搭建--------log4net日志

    首先新建一个log4net.config文件，配置如下：

<?xml version="1.0" encoding="utf-8" ?>

    
        
"log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
    

    
        
        "loginfo">
            "ALL" />
            ref ref="AdoNetAppender" />
            ref ref="InfoAppender" />
        
        
        "logwarn">
            "ALL" />
            ref ref="WarnAppender" />
        
        
        "logerror">
            "ALL" />
            ref ref="AdoNetAppender" />
            ref ref="ErrorAppender" />
        
        
        "logfatal">
            "ALL" />
            ref ref="AdoNetAppender" />
            ref ref="FatalAppender" />
        

        
        "InfoAppender" type="log4net.Appender.RollingFileAppender">
            
            "File" value= "Log\info\"/>
            
            "AppendToFile" value= "true"/>
            
            "MaxSizeRollBackups" value= "10"/>
            
            "StaticLogFileName" value= "false"/>
            
            "DatePattern" value= "yyyyMMdd".log""/>
            
            "RollingStyle" value= "Date"/>
            "log4net.Layout.PatternLayout">
                "ConversionPattern" value="%date{yyyy-MM-dd HH:mm:ss.fff} %-5p %m%n" />
            
        

        "WarnAppender" type="log4net.Appender.RollingFileAppender">
            "File" value= "Log\warn\"/>
            "AppendToFile" value= "true"/>
            "MaxSizeRollBackups" value= "10"/>
            "StaticLogFileName" value= "false"/>
            "DatePattern" value= "yyyyMMdd".log""/>
            "RollingStyle" value= "Date"/>
            "log4net.Layout.PatternLayout">
                "ConversionPattern" value="%date{yyyy-MM-dd HH:mm:ss.fff} %-5p %m%n" />
            
        

        "ErrorAppender" type="log4net.Appender.RollingFileAppender">
            "File" value= "Log\error\"/>
            "AppendToFile" value= "true"/>
            "MaxSizeRollBackups" value= "10"/>
            "StaticLogFileName" value= "false"/>
            "DatePattern" value= "yyyyMMdd".log""/>
            "RollingStyle" value= "Date"/>
            "log4net.Layout.PatternLayout">
                "ConversionPattern" value="%date{yyyy-MM-dd HH:mm:ss.fff} %-5p %m%n" />
            
        

        "FatalAppender" type="log4net.Appender.RollingFileAppender">
            "File" value= "Log\fatal\"/>
            "AppendToFile" value= "true"/>
            "MaxSizeRollBackups" value= "10"/>
            "StaticLogFileName" value= "false"/>
            "DatePattern" value= "yyyyMMdd".log""/>
            "RollingStyle" value= "Date"/>
            "log4net.Layout.PatternLayout">
                "ConversionPattern" value="%date{yyyy-MM-dd HH:mm:ss.fff} %-5p %m%n" />
            
        

        
        "ColoredConsoleAppender" type="log4net.Appender.ColoredConsoleAppender">
            
                "ERROR" />
                "Red, HighIntensity" />
            
            
                "Info" />
                "Green" />
            
            "log4net.Layout.PatternLayout">
                "%n%date{HH:mm:ss.fff} %-5level %m" />
            
            "log4net.Filter.LevelRangeFilter">
                "LevelMin" value="Info" />
                "LevelMax" value="Fatal" />
            
        

        
        "AdoNetAppender" type="log4net.Appender.AdoNetAppender">
            "1" />
            "System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
            "data source=.;initial catalog=test_log;integrated security=true" />
            "INSERT INTO log([userid],[level],[ip],[msg],[exception]) VALUES (@userid,@level,@ip, @msg,@exception)" />
            
                "@userid"/>
                "Int64"/>
                "64"/>
                "log4net.Layout.PatternLayout">
                    "%X{userid}"/>
                
            
            
                "@level" />
                "String" />
                "50" />
                "log4net.Layout.PatternLayout">
                    "%level" />
                
            
            
                "@ip" />
                "String" />
                "50" />
                "log4net.Layout.PatternLayout">
                    "%X{ip}" />
                
            
            
                "@msg" />
                "String" />
                "4000" />
                "log4net.Layout.PatternLayout">
                    "%message" />
                
            
            
                "@exception" />
                "String" />
                "2000" />
                "log4net.Layout.ExceptionLayout" />
            
        

    

新建一个系统日志通用类：LogHelper

using log4net;
using log4net.Config;
using log4net.Repository;
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;

namespace Core.Net.Common.Core.Net.Core.Nlog4
{
    /// 

    /// 系统日志记录通用类
    /// 
    public class LogHelper
    {
        private const string repositoryName = "NETCoreRepository";
        private const string configFile = "log4net.config";
        private static ILoggerRepository repository { get; set; }

        private static readonly ILog _loginfo = LogManager.GetLogger(repositoryName, "loginfo");
        private static readonly ILog _logerror = LogManager.GetLogger(repositoryName, "logerror");
        private static readonly ILog _logwarn = LogManager.GetLogger(repositoryName, "logwarn");
        private static readonly ILog _logfatal = LogManager.GetLogger(repositoryName, "logfatal");

        public static void Configure()
        {
            repository = LogManager.CreateRepository(repositoryName);
            XmlConfigurator.Configure(repository, new FileInfo(configFile));
        }
        /// 

        /// 基本信息日志插入
        /// 
        /// 
        public static void Info(string msg)
        {
            _loginfo.Info(msg);
        }
        /// 

        /// 警告信息日志插入
        /// 
        /// 
        public static void Warn(string msg)
        {
            _logwarn.Warn(msg);
        }
        /// 

        /// 错误信息日志插入
        /// 
        /// 
        public static void Error(string msg)
        {
            _logerror.Error(msg);
        }
        /// 

        //异常信息插入
        /// 
        /// 
        public static void Fatal(string msg)
        {
            _logfatal.Fatal(msg);
        }
    }
}

在ConfigureServices方法中注册：

 LogHelper.Configure(); //Nlog4日志

调用：

            LogHelper.Error("11111");
            LogHelper.Info("11111");
            LogHelper.Warn("11111");
            LogHelper.Fatal("111111");

查看：