android logback xml configuration example

logback.xml

<configuration>
    <!-- 로그가 저장되는 디렉토리 지정-->
    <property name="LOG_DIR" value="/sdcard/log" />
    <property name="FILE_NAME" value="로그파일명"/>

    <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <!-- active log file -->
        <file>${LOG_DIR}/${FILE_NAME}.txt</file>
        <encoder>
            <!--<pattern>%logger{35} - %msg%n</pattern>-->
            <!-- 특수문자인  < > 를 삽입하기 위해서 <![CDATA[내용]] 으로 포맷팅-->
            <pattern><![CDATA[[%-5level] %d{HH:mm:ss.SSS} <%logger{0}.%method> | %msg%n]]></pattern>
        </encoder>

        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!-- daily rollover period -->
            <fileNamePattern>${LOG_DIR}/${FILE_NAME}_%d{yyyy-MM-dd}.txt</fileNamePattern>
            <!-- keep 7 days' worth of history -->
            <maxHistory>7</maxHistory>
            <cleanHistoryOnStart>true</cleanHistoryOnStart>
        </rollingPolicy>
        <!-- 파일로 출력되는 로그의 레벨 따로 지정-->
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>info</level>
        </filter>
    </appender>

    <!-- Logcat으로 출력되게 함-->
    <appender name="LOGCAT" class="ch.qos.logback.classic.android.LogcatAppender">
        <tagEncoder>
            <pattern>%logger{0}</pattern>
        </tagEncoder>
        <encoder>
            <pattern>|%method| %msg</pattern>
        </encoder>
        <!-- 로그캣으로 출력되는 로그의 레벨 따로 지정-->
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>debug</level>
        </filter>
    </appender>


    <!--로그레벨 설정-->
    <root level="debug">
        <appender-ref ref="FILE" />
        <appender-ref ref="LOGCAT" />
    </root>

</configuration>