spring boot 整合log4j2

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依赖 -->
   <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配置信息

<Configuration status="INFO" monitorInterval="30">
   <Properties>
      <!--  输出路径  -->
      <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>
   <!--切换输出级别-->
   <Loggers>
      <Root level="info">
         <AppenderRef ref="Console"/>
         <AppenderRef ref="debug"/>
         <AppenderRef ref="info"/>
         <AppenderRef ref="error"/>
      </Root>
   </Loggers>
</Configuration>

4  还可以根据不同业务场景指定不同日志记录到不同日志文件，比如需要跳过不处理的数据，比如订单日志等。需要在记录日志时添加标志信息，日志配置文件中配置标志信息对应的日志文件即可

   （1） java中

　　　　　　log.info(MarkerFactory.getMarker("SKIP_DATA"), "此处记录详细日志信息");

   （2） log4j2.xml

<RollingFile name="RollingFileSkipData" fileName="${log_path}/report_skip.log"   filePattern="${log_path}/history/report_skip-%d{yyyy-MM-dd}-%i.log">
    <Filters>
        <MarkerFilter marker="SKIP_DATA" onMatch="ACCEPT" onMismatch="DENY"/>
    </Filters>
    <PatternLayout charset="utf-8"
        pattern="[%d{yyyy-MM-dd HH:mm:ss:SSS}] [%p] - %l - %m%n" />
    <Policies>
        <TimeBasedTriggeringPolicy />
        <SizeBasedTriggeringPolicy size="20 MB" />
    </Policies>
</RollingFile> 


...

<AppenderRef ref="RollingFileSkipData"/>