[Note] Configuration file when using Logback with Spring Boot

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE logback>
<configuration>
    <include resource="org/springframework/boot/logging/logback/defaults.xml" />

    <!--Use the default standard output-->
    <include resource="org/springframework/boot/logging/logback/console-appender.xml" />

    <!--Change the output pattern of standard output from the default-->
    <property name="CONSOLE_LOG_PATTERN" value="%d{yyyy-MM-dd HH:mm:ss.SSS} %t [%-5p] [%c] %m%n"/>

    <!--I want to separate the file output by INFO and ERROR, so define them separately.-->
    <!--Definition for INFO level output-->
    <appender name="FILE_INFO" class="ch.qos.logback.core.rolling.RollingFileAppender">
		<encoder>
            <charset>UTF-8</charset>
			<pattern>${CONSOLE_LOG_PATTERN}</pattern>
		</encoder>
		<file>Log file name</file>
		<rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
			<fileNamePattern>Log file name.%d{yyyy-MM-dd}.%i.gz</fileNamePattern>
			<maxFileSize>10MB</maxFileSize>
		</rollingPolicy>
	</appender>

    <!--Definition for ERROR level output-->
    <appender name="FILE_ERROR" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <!--Define a filter to output only the ERROR level-->
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
          <level>ERROR</level>
          <onMatch>ACCEPT</onMatch>
          <onMismatch>DENY</onMismatch>
        </filter>
		<encoder>
            <charset>UTF-8</charset>
			<pattern>${CONSOLE_LOG_PATTERN}</pattern>
		</encoder>
		<file>Error log file name</file>
		<rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
			<fileNamePattern>Error log file name.%d{yyyy-MM-dd}.%i.gz</fileNamePattern>
			<maxFileSize>10MB</maxFileSize>
		</rollingPolicy>
	</appender>

    <!--Output INFO level or higher-->
    <root level="INFO">
        <appender-ref ref="CONSOLE" />
        <appender-ref ref="FILE_INFO" />
        <appender-ref ref="FILE_ERROR" />
    </root>
</configuration>

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