.net6 webapi log4net完整配置使用流程

前置：为项目安装如下两个依赖

1.创建文件夹cfgFile

2.创建log4net.Config

<?xml version="1.0" encoding="utf-8" ?>
<log4net>
    <appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%date [%thread] %-5level %logger - %message%newline" />
        </layout>
    </appender>

    <appender name="FileAppender" type="log4net.Appender.FileAppender">
        <!--文件地址-->
        <file value="logs/log-file.txt" />
        <!--追加日志内容-->
        <appendToFile value="true" />
        <!--多线程-->
        <lockingModel type="log4net.Appender.FileAppender+MinimalLock"/>
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
        </layout>
    </appender>

    <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
        <file value="logs/LogFile/Error/" />
        <appendToFile value="true" />
        <rollingStyle value="Composite" />
        <datePattern value="yyyyMMdd'.log'" />
        <maxSizeRollBackups value="20" />
        <maximumFileSize value="3MB" />
        <staticLogFileName value="false" />
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
        </layout>
        <filter type="log4net.Filter.LevelRangeFilter">
            <levelMin value="ERROR" />
            <levelMax value="FATAL" />
        </filter>
    </appender>

    <appender name="WarnRollingFileAppender" type="log4net.Appender.RollingFileAppender">
        <file value="logs/LogFile/Warn/" />
        <appendToFile value="true" />
        <rollingStyle value="Date" />
        <datePattern value="yyyy-MM-dd'.log'" />
        <encoding value="utf-8" />
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%newline%date [%thread %-5level] %n -- %m%n" />
        </layout>
        <filter type="log4net.Filter.LevelRangeFilter">
            <levelMin value="WARN" />
            <levelMax value="WARN" />
        </filter>
    </appender>

    <appender name="InfoRollingFileAppender" type="log4net.Appender.RollingFileAppender">
        <file value="logs/LogFile/Info/" />
        <appendToFile value="true" />
        <rollingStyle value="Date" />
        <datePattern value="yyyy-MM-dd'.log'" />
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%newline%date [%thread %-5level] %n %m%n" />
        </layout>
        <filter type="log4net.Filter.LevelRangeFilter">
            <levelMin value="INFO" />
            <levelMax value="INFO" />
        </filter>
    </appender>

    <root>
        <level value="ALL" />
        <appender-ref ref="ConsoleAppender" />
        <appender-ref ref="FileAppender" />
        <appender-ref ref="RollingLogFileAppender" />
        <appender-ref ref="WarnRollingFileAppender" />
        <appender-ref ref="InfoRollingFileAppender" />
    </root>
</log4net>

3.使用日志

Program.cs->添加配置

//日志
builder.Logging.AddLog4Net("CfgFile/log4net.Config");

配置位置tips：

4.通过构造函数注入日志在控制器中

//UsersController控制器中
private readonly ILogger<UsersController> _logger;
 public UsersController(ILogger<UsersController> logger)
 {
     _logger = logger;
 }

配置位置tips：

5.使用日志

 _logger.LogInformation("这是一个Get请求");

配置位置tips：

6.测试日志是否成功

执行项目

• 查看bin文件夹下是否多了下面的目录

• 调用Get命令，查看在输出中是否有刚才那段日志

ok,日志配置成功~~