Log4j 日志的使用

今天药忘吃喽~ 2022-06-10 04:09 209阅读 0赞

首先导入相关的包文件

<?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE log4j:configuration PUBLIC "-//log4j/log4j Configuration//EN" "log4j.dtd">
    <log4j:configuration>
        
        <appender name="consoleAppender" class="org.apache.log4j.ConsoleAppender">
            <param name="Threshold" value="DEBUG"/>
            <layout class="org.apache.log4j.PatternLayout">
                <param name="ConversionPattern" value="[%d{HH:mm:ss:SSS}] [%p] - %l - %m%n"/>
            </layout>
        </appender>
    
        
        
        <appender name="fileAppenderInfo" class="org.apache.log4j.DailyRollingFileAppender">
            <param name="File" value="/logs/admin.log" />
            <param name="DatePattern" value=".yyyy-MM-dd" />
            <layout class="org.apache.log4j.PatternLayout">
                <param name="ConversionPattern" value="[%d{HH:mm:ss:SSS}] [%p] - %l - %m%n"/>
            </layout>
            <filter class="org.apache.log4j.varia.LevelRangeFilter">
                <param name="LevelMin" value="INFO" />
                <param name="LevelMax" value="INFO" />
            </filter>
        </appender>
        
    
        
        <appender name="fileAppenderWarn" class="org.apache.log4j.DailyRollingFileAppender">
            <param name="File" value="/logs/warn.log" />
            <param name="DatePattern" value=".yyyy-MM-dd" />
            <layout class="org.apache.log4j.PatternLayout">
                <param name="ConversionPattern" value="[%d{HH:mm:ss:SSS}] [%p] - %l - %m%n"/>
            </layout>
    
            <filter class="org.apache.log4j.varia.LevelRangeFilter">
                <param name="LevelMin" value="WARN" />
                <param name="LevelMax" value="WARN" />
            </filter>
        </appender>
    
        
        <appender name="fileAppenderError" class="org.apache.log4j.DailyRollingFileAppender">
            <param name="File" value="/logs/error.log" />
            <param name="DatePattern" value=".yyyy-MM-dd" />
            <layout class="org.apache.log4j.PatternLayout">
                <param name="ConversionPattern" value="[%d{HH:mm:ss:SSS}] [%p] - %l - %m%n"/>
            </layout>
            <filter class="org.apache.log4j.varia.LevelRangeFilter">
                <param name="LevelMin" value="ERROR" />
                <param name="LevelMax" value="ERROR" />
            </filter>
        </appender>
    
        
        <logger name="org.springframework">
            <level value="INFO"></level>
        </logger>
        
        <logger name="admin_trace" additivity="false">
    		<level value="INFO" />
    		<appender-ref ref="fileAppenderInfo" />
    	</logger>
    
        <root>
            <level value="ALL"/>
            <appender-ref ref="consoleAppender" />
            <appender-ref ref="fileAppenderWarn" />
            <appender-ref ref="fileAppenderError" />
        </root>
    </log4j:configuration>

在相应的java文件中引入

private final Logger TraceLogger = Logger.getLogger("trace");

TraceLogger.info("------");