1) 实现效果：项目的整体的日志打印级别为ERROR，但在某个包下或某个类想打印INFO级别的日志。
2) 配置：
FILE是ERROR级别日志打印；
SPECIAL 是INFO级别日志打印；
FILE与SPECIAL唯一不同是日志保存路径不同，其它策略相同；
通过 logger标签指定包路径或类路径并引用SPECIAL；

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <contextName>test</contextName>
    <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${
   catalina.home}/logs/test/test.%d.%i.log</fileNamePattern>
            <maxHistory>30</maxHistory>
            <timeBasedFileNamingAndTriggeringPolicy  class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>10MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
        </rollingPolicy>
        <encoder>
            <pattern>%d %p (%file:%line\)- %m%n -[%X{
   X-B3-TraceId:-},%X{
   X-B3-SpanId:-}]</pattern>
            <charset>UTF-8</charset>
        </encoder>
    </appender>


    <appender name="SPECIAL" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${
   catalina.home}/logs/test/special/special.%d.%i.log</fileNamePattern>
            <maxHistory>30</maxHistory>
            <timeBasedFileNamingAndTriggeringPolicy  class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>10MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
        </rollingPolicy>
        <encoder>
            <pattern>%d %p (%file:%line\)- %m%n -[%X{
   X-B3-TraceId:-},%X{
   X-B3-SpanId:-}]</pattern>
            <charset>UTF-8</charset>
        </encoder>
    </appender>

    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%d %p (%file:%line\)- %m%n </pattern>
            <charset>UTF-8</charset>
        </encoder>
    </appender>
    <!--打印SQL-->
    <logger name="daoLog" level="ERROR" />
    <!-- 记录special操作日志 -->
    <logger name="aaa.bbb.ccc.DemoService" level="INFO" >
        <appender-ref ref="SPECIAL"/>
    </logger>

    <root level="error">
        <appender-ref ref="FILE"/>
        <appender-ref ref="STDOUT"/>
    </root>
</configuration>