日志框架——Log4j2

导入依赖

info

要使用Log4j2，需要将SpringBoot的默认日志某块移除，同时导入Log4j2的依赖

pom.xml

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-web</artifactId>

<exclusions>

<exclusion>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-logging</artifactId>

</exclusion>

</exclusions>

</dependency>

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-log4j2</artifactId>

</dependency>

编写Log4j配置文件

log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>

<configuration>

<Appenders>

<Console name="CONSOLE" target="SYSTEM_OUT">

<PatternLayout charset="UTF-8" pattern="[%-5p] %d %c - %m%n" />

</Console>

<RollingFile name="runtimeFile" fileName="./logs/boot-launch.log" filePattern="./logs/boot-launch-%d{yyyy-MM-dd}.log"

append="true">

<PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSS Z}\t%level\t%class\t%line\t%thread\t%msg%n"/>

<Policies>

<TimeBasedTriggeringPolicy/>

</Policies>

<!-- 此行以下为自动清理日志的配置 -->

<DefaultRolloverStrategy>

<Delete basePath="./logs">

<!-- glob 项为需要自动清理日志的pattern -->

<IfFileName glob="*.log"/>

<!-- 30d 表示自动清理掉30天以前的日志文件 -->

<IfLastModified age="30d"/>

</Delete>

</DefaultRolloverStrategy>

<!-- 此行以上为自动清理日志的配置 -->

</RollingFile>

</Appenders>

<Loggers>

<root level="info">

<AppenderRef ref="CONSOLE" />

<AppenderRef ref="runtimeFile" />

</root>

</Loggers>

</configuration>

在SpringBoot配置中开启

application.xml

mybatis:

mapper-locations: classpath:mapper/*.xml

configuration:

map-underscore-to-camel-case: true #驼峰映射

log-impl: org.apache.ibatis.logging.stdout.StdOutImpl #调试打印SQL

logging:

config: classpath:log4j2.xml