Log4j2 插件的简单使用

代码: TestPlugin.java

package com.chenjiacheng.webapp.plugins;import org.apache.logging.log4j.core.LogEvent;
import org.apache.logging.log4j.core.config.plugins.Plugin;
import org.apache.logging.log4j.core.lookup.StrLookup;/*** Created by chenjiacheng on 2024/12/22 21:08** @author chenjiacheng* @since 1.0.0*/
@Plugin(name = "test", category = StrLookup.CATEGORY)
public class TestPlugin implements StrLookup {public TestPlugin(){System.out.println("TestPlugin.TestPlugin");}@Overridepublic String lookup(String key) {return "test";}@Overridepublic String lookup(LogEvent event, String key) {return "test";}
}

配置: log4j2-spring.xml

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="TRACE" monitorInterval="30"><LookupPlugin name="spring"><Plugin class="org.apache.logging.log4j.spring.boot.SpringLookup"/></LookupPlugin><Properties><Property name="PROJECT_NAME">${spring:spring.application.name}</Property><Property name="LOG_PATH">./data/logs</Property><Property name="TEST">${test:test.key}</Property><Property name="pattern">[%d{yyyy-MM-dd HH:mm:ss,SSS}] [%c{1.}::%M] [%t] [%p]: %m%n</Property></Properties><Appenders><Console name="Console" target="SYSTEM_OUT"><PatternLayout pattern="${pattern}"/></Console><RollingFile name="RollingFile" fileName="${LOG_PATH}/${PROJECT_NAME}/${TEST}.log"filePattern="${LOG_PATH}/${date:yyyy-MM-dd}/${PROJECT_NAME}-%d{yyyy-MM-dd}-%i.log"><PatternLayout pattern="${pattern}"/><Policies><TimeBasedTriggeringPolicy interval="1" modulate="true"/><SizeBasedTriggeringPolicy size="1024 MB"/></Policies></RollingFile></Appenders><Loggers><Root level="debug"><appender-ref ref="Console"/><appender-ref ref="RollingFile"/></Root></Loggers>
</Configuration>

作用: 对指定环境变量进行解析