在 .net core 中使用 log4net
Intro
自己有幾個(gè)自己的小項(xiàng)目，有許多公用的方法/擴(kuò)展/工具類等等，于是封裝了一些常用的工具類/擴(kuò)展方法 WeihanLi.Common，日志使用了自己比較常用的 log4net，開始默認(rèn)使用的log4net進(jìn)行處理日志，在1.0.12版本之前直接依賴 log4net，后來覺得這樣做不太好，一是多了 log4net 這一依賴而且有點(diǎn)一個(gè)公共類庫(kù)依賴某一個(gè)具體的日志框架有點(diǎn)不妥，后來決定把 log4net 給獨(dú)立出來，單獨(dú)遷移出來一個(gè) WeihanLi.Common.Logging.Log4Net
本文主要介紹一下，怎么通過 WeihanLi.Common.Logging.Log4Net 來使用 log4net，讓你在 .net core 應(yīng)用中有著和 .net framework 一致的體驗(yàn)
安裝
通過 Nuget 安裝 WeihanLi.Common.Logging.Log4Net
使用
-
log4net 初始化
Log4NetHelper.LogInit(); // 默認(rèn)使用當(dāng)前目錄的 log4net.config 作為配置文件 Log4NetHelper.LogInit(log4netConfigFilePath); // 手動(dòng)指定 log4net 配置文件路徑 -
獲取 logger，GetLogger
var genericLogger = Log4NetHelper.GetLogger<ClassName>(); var typeLogger = Log4NetHelper.GetLogger(typeof(Program)); var logger = Log4NetHelper.GetLogger("LoggerName"); -
記錄日志
logger.Debug(msg); logger.Info(msg); logger.Info(msg, exception); logger.Warn(msg); logger.Warn(msg, exception); logger.Error(msg); logger.Error(msg, exception); logger.Fatal(msg); logger.Fatal(msg, exception); -
配置使用 ElasticsearchAppender
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
</configSections>
<log4net>
<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
<file type="log4net.Util.PatternString" value="./Log/systemLog.%date{yyyy-MM-dd}.log" />
<appendToFile value="true" />
<encoding value="unicodeFFFE" />
<rollingStyle value="Date" />
<datePattern value="yyyyMMdd" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger - %message%newline" />
</layout>
</appender>
<appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">
<bufferSize value="100" />
<connectionType value="System.Data.SqlClient.SqlConnection, System.Data" />
<connectionString value="data source=.;initial catalog=WebLog;integrated security=false;persist security info=True;User ID=[***];Password=[***]" />
<commandText value="INSERT INTO [dbo].[TestLog]([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" />
</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>
<filter type="log4net.Filter.LevelRangeFilter">
<!--<param name="LevelMin" value="DEBUG" />
<param name="LevelMax" value="ERROR" />-->
<param name="LevelMin" value="WARN" />
</filter>
</appender>
<appender name="TraceAppender" type="log4net.Appender.TraceAppender">
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
</layout>
</appender>
<appender name="AspNetTraceAppender" type="log4net.Appender.AspNetTraceAppender">
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
</layout>
</appender>
<appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger - %message%newline" />
</layout>
</appender>
<appender name="ColoredConsoleAppender" type="log4net.Appender.ColoredConsoleAppender">
<mapping>
<level value="ERROR" />
<foreColor value="White" />
<backColor value="Red, HighIntensity" />
</mapping>
<mapping>
<level value="DEBUG" />
<backColor value="Green" />
</mapping>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger - %message%newline" />
</layout>
</appender>
<appender name="SmtpAppender" type="log4net.Appender.SmtpAppender">
<authentication value="Basic" />
<username value="ben121011@126.com" />
<password value="*******" />
<to value="w***@outlook.com" />
<from value="ben121011@126.com" />
<subject value="logging message test" />
<smtpHost value="smtp.126.com" />
<bufferSize value="512" />
<!-- 超長(zhǎng)是否丟棄 -->
<lossy value="true" />
<!-- 下面的定義， 就是 日志級(jí)別 大于 ERROR 的， 才發(fā)郵件. -->
<filter type="log4net.Filter.LevelRangeFilter">
<levelMin value="ERROR" />
<levelMax value="FATAL" />
</filter>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%newline %date %newline [%thread] %newline %-5level %logger %newline - %message" />
</layout>
</appender>
<appender name="ElasticSearchAppender" type="WeihanLi.Common.Logging.Log4Net.ElasticSearchAppender, WeihanLi.Common.Logging.Log4Net">
<bufferSize value="2" />
<ElasticSearchUrl value="http://localhost:9200" />
</appender>
<root>
<level value="ALL" />
<appender-ref ref="TraceAppender" />
<appender-ref ref="ConsoleAppender" />
<appender-ref ref="RollingLogFileAppender" />
<!--
<appender-ref ref="ColoredConsoleAppender" />
<appender-ref ref="AdoNetAppender" />
<appender-ref ref="SmtpAppender" />
<appender-ref ref="ElasticSearchAppender" />
-->
</root>
</log4net>
</configuration>
Memo
如果有什么問題或建議，歡迎提出
