Spring Boot使用Log4j2的实例代码

<!--use log4j2 property-->    <dependency>      <groupId>org.springframework.boot</groupId>      <artifactId>spring-boot-starter</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>    <!--flume log4j appender-->    <dependency>      <groupId>org.apache.logging.log4j</groupId>      <artifactId>log4j-flume-ng</artifactId>      <version>2.6</version>    </dependency>

<?xml version="1.0" encoding="UTF-8"?><Configuration monitorInterval="60">  <Properties>    <Property name="source">api-web</Property>    <Property name="log-pattern">%d{yyyy-MM-dd HH:mm:ss.SSS} [%X{userId}] [%t] [%-5level] %c{1.}@%M%L - %m%n</Property>    <!--get product dynamic property-->  </Properties>  <Appenders>    <RollingFile name="RollingFile" fileName="logs/app.log"           filePattern="logs/$${date:yyyy-MM}/app-%d{MM-dd-yyyy}-%i.log.gz">      <PatternLayout>        <Pattern>${log-pattern}</Pattern>      </PatternLayout>      <Policies>        <TimeBasedTriggeringPolicy />        <SizeBasedTriggeringPolicy size="250 MB"/>      </Policies>    </RollingFile>    <Flume name="eventLogger" compress="false" type="avro" ignoreExceptions="false">      <Agent host="192.168.31.115" port="4444"/>      <Agent host="127.0.0.1" port="4444"/>      <PatternLayout>        <pattern>          <pattern>${log-pattern}</pattern>        </pattern>      </PatternLayout>    </Flume>    <Console name="Console-Appender" target="SYSTEM_OUT" ignoreExceptions="false">      <PatternLayout>        <pattern>${log-pattern}</pattern>      </PatternLayout>    </Console>    <!-- 主要Apeender失败的时候使用备用Appender-->    <Failover name="Failover" primary="eventLogger">      <Failovers>        <AppenderRef ref="RollingFile"/>      </Failovers>    </Failover>  </Appenders>  <Loggers>    <!--在需要同时打印文件和发送至flume的时候使用-->    <!--<Logger name="" level="info" additivity="false">-->      <!--<AppenderRef ref="RollingFile"/>-->    <!--</Logger>-->    <Root level="info">      <AppenderRef ref="Console-Appender"/>      <AppenderRef ref="Failover"/>    </Root>  </Loggers></Configuration>