【log4j】配置Slf4j

配置Slf4j

1. 引入lombok包

   <dependency>
       <groupId>org.projectlombok</groupId>
       <artifactId>lombok</artifactId>
       <version>1.18.36</version>
       <scope>provided</scope>
   </dependency>

2. 引入log4j相关api

   <dependency>
       <groupId>org.apache.logging.log4j</groupId>
       <artifactId>log4j-api</artifactId>
       <version>2.24.3</version>
   </dependency>
   <dependency>
       <groupId>org.apache.logging.log4j</groupId>
       <artifactId>log4j-core</artifactId>
       <version>2.24.3</version>
   </dependency>
   <dependency>
       <groupId>org.apache.logging.log4j</groupId>
       <artifactId>log4j-slf4j2-impl</artifactId>
       <version>2.24.3</version>
   </dependency>

3. 新建log4j2.xml文件

   <?xml version="1.0" encoding="UTF-8"?>
   <Configuration status="WARN">
       <Appenders>
           <!-- 控制台Appender -->
           <Console name="Console" target="SYSTEM_OUT">
               <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss} [%t] %-5level %logger{36} - %msg%n"/>
               <ThresholdFilter level="info" onMatch="ACCEPT" onMismatch="DENY"/>
           </Console>
       </Appenders>
   
       <Loggers>
           <!-- Root Logger配置 -->
           <Root level="info">
               <AppenderRef ref="Console"/>
           </Root>
       </Loggers>
   </Configuration>

4. 在类上标注@Slf4j注解，类中使用log.info/error/warn/debug等即可