Spring Boot异步输出Logback日志方法详解

try{
 ....
}catch(Exception ex){
 String errorMessage=String.format("Error while reading information of user [%s]",userName);
 logger.error(errorMessage,ex);
 throw new UserServiceException(errorMessage,ex);
}

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <!-- 属性文件:在配置文件中找到对应的配置项 -->
  <springProperty scope="context" name="logPath" source="logging.path"/>

  <!-- 输出到控制台 -->
  <appender name="CONSOLE-LOG" class="ch.qos.logback.core.ConsoleAppender">
    <layout class="ch.qos.logback.classic.PatternLayout">
      <pattern>[%d{yyyy-MM-dd' 'HH:mm:ss.sss}] [%C] [%t] [%L] [%-5p] %m%n</pattern>
    </layout>
  </appender>

  <!-- 获取比info级别高(包括info级别)但除error级别的日志 -->
  <appender name="INFO-LOG" class="ch.qos.logback.core.rolling.RollingFileAppender">
    <!-- 指定过滤策略 -->
    <filter class="ch.qos.logback.classic.filter.LevelFilter">
      <level>ERROR</level>
      <onMatch>DENY</onMatch>
      <onMismatch>ACCEPT</onMismatch>
    </filter>
    <encoder>
      <!-- 指定日志输出格式 -->
      <pattern>[%d{yyyy-MM-dd' 'HH:mm:ss.sss}] [%C] [%t] [%L] [%-5p] %m%n</pattern>
    </encoder>

    <!-- 指定收集策略：滚动策略-->
    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
      <!-- 指定生成日志保存地址 -->
      <fileNamePattern>${logPath}/info.%d.log</fileNamePattern>
      <maxHistory>30</maxHistory>
    </rollingPolicy>
  </appender>

  <appender name="ERROR-LOG" class="ch.qos.logback.core.rolling.RollingFileAppender">
    <!-- 指定过滤策略 -->
    <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
      <level>ERROR</level>
    </filter>
    <encoder>
      <!-- 指定日志输出格式 -->
      <pattern>[%d{yyyy-MM-dd' 'HH:mm:ss.sss}] [%C] [%t] [%L] [%-5p] %m%n</pattern>
    </encoder>
    <!-- 指定收集策略：滚动策略-->
    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
      <!--指定生成日志保存地址 -->
      <fileNamePattern>${logPath}/error.%d.log</fileNamePattern>
      <maxHistory>30</maxHistory>
    </rollingPolicy>
  </appender>

  <!-- 异步输出 -->
  <appender name="ASYNC-INFO" class="ch.qos.logback.classic.AsyncAppender">
    <!-- 不丢失日志.默认的,如果队列的80%已满,则会丢弃TRACT、DEBUG、INFO级别的日志 -->
    <discardingThreshold>0</discardingThreshold>
    <!-- 更改默认的队列的深度,该值会影响性能.默认值为256 -->
    <queueSize>256</queueSize>
    <!-- 添加附加的appender,最多只能添加一个 -->
    <appender-ref ref="INFO-LOG"/>
  </appender>

  <appender name="ASYNC-ERROR" class="ch.qos.logback.classic.AsyncAppender">
    <!-- 不丢失日志.默认的,如果队列的80%已满,则会丢弃TRACT、DEBUG、INFO级别的日志 -->
    <discardingThreshold>0</discardingThreshold>
    <!-- 更改默认的队列的深度,该值会影响性能.默认值为256 -->
    <queueSize>256</queueSize>
    <!-- 添加附加的appender,最多只能添加一个 -->
    <appender-ref ref="ERROR-LOG"/>
  </appender>

  <!-- 指定最基础的日志输出级别 -->
  <root level="info">
    <appender-ref ref="CONSOLE-LOG" />
    <appender-ref ref="INFO-LOG" />
    <appender-ref ref="ERROR-LOG" />
  </root>

</configuration>

logging:
 path: ./logs