1 pom.xml

<dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-web</artifactId>
   <exclusions>
      <exclusion>
         <artifactId>logback-core</artifactId>
         <groupId>ch.qos.logback</groupId>
      </exclusion>
      <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</artifactId>
   <exclusions>
      <exclusion>
         <artifactId>spring-boot-starter-logging</artifactId>
         <groupId>org.springframework.boot</groupId>
      </exclusion>
   </exclusions>
</dependency>

<dependency> <!-- 引入log4j2依賴 -->
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-log4j2</artifactId>
</dependency>

2  application.properties 配置log4j2.xml

logging.config=classpath:log4j2.xml

3  log4j2.xml配置資訊

<Configuration status="INFO" monitorInterval="30">
   <Properties>
      <!--  輸出路徑  -->
      <Property name="pattern">[%d][%-5p][%t] %m (%F:%L)%n</Property>
      <Property name="log_path">./logs</Property>
   </Properties>
   <Appenders>
      <Console name="Console" target="SYSTEM_OUT">
         <PatternLayout
               pattern="${pattern}"/>
      </Console>
      <RollingFile name="debug" fileName="${log_path}/log_debug.log"
                filePattern="${log_path}/history/log_debug_%d{yyyy-MM-dd}-%i.log">
         <Filters>
            <ThresholdFilter level="debug" onMatch="ACCEPT" onMismatch="DENY"/>
         </Filters>
         <PatternLayout charset="utf-8"  pattern="${pattern}"/>
         <Policies>
            <TimeBasedTriggeringPolicy interval="1"  />
            <SizeBasedTriggeringPolicy size="20 MB" />
         </Policies>
         <DefaultRolloverStrategy max="30" />
      </RollingFile>


      <RollingFile name="info" fileName="${log_path}/log_info.log"
                filePattern="${log_path}/history/log_info_%d{yyyy-MM-dd}-%i.log">
         <Filters>
            <ThresholdFilter level="info" onMatch="ACCEPT" onMismatch="DENY"/>
         </Filters>
         <PatternLayout charset="utf-8"  pattern="${pattern}"/>
         <Policies>
            <TimeBasedTriggeringPolicy interval="1"  />
            <SizeBasedTriggeringPolicy size="20 MB" />
         </Policies>
         <DefaultRolloverStrategy max="30" />
      </RollingFile>

      <RollingFile name="error" fileName="${log_path}/log_error.log"
                filePattern="${log_path}/history/log_error_%d{yyyy-MM-dd}-%i.log">
         <Filters>
            <ThresholdFilter level="error" onMatch="ACCEPT"  onMismatch="DENY" />
         </Filters>
         <PatternLayout charset="utf-8"  pattern="${pattern}"/>
         <Policies>
            <TimeBasedTriggeringPolicy interval="1"  />
            <SizeBasedTriggeringPolicy size="20 MB" />
         </Policies>
         <DefaultRolloverStrategy max="30" />
      </RollingFile>

   </Appenders>
   <!--切換輸出級別-->
   <Loggers>
      <Root level="info">
         <AppenderRef ref="Console"/>
         <AppenderRef ref="debug"/>
         <AppenderRef ref="info"/>
         <AppenderRef ref="error"/>
      </Root>
   </Loggers>
</Configuration>