log4j2+slf4j+junit

dependencies:
    compile group: 'org.slf4j', name: 'slf4j-api', version: '1.7.21'
    compile group: 'org.apache.logging.log4j', name: 'log4j-core', version: '2.7'
    compile group: 'org.apache.logging.log4j', name: 'log4j-api', version: '2.7'
    compile group: 'org.apache.logging.log4j', name: 'log4j-slf4j-impl', version: '2.7'
    compile group: 'org.apache.logging.log4j', name: 'log4j-jcl', version: '2.7'
    testCompile("junit:junit")

log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="WARN">

    <Appenders>
        <!-- 输出到控制台 -->
        <Console name="Console" target="SYSTEM_OUT">
            <!-- 需要记录的级别 -->
            <!-- <ThresholdFilter level="debug" onMatch="ACCEPT" onMismatch="DENY" /> -->
            <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss,SSS}:%4p %t (%F:%L) - %m%n" />
        </Console>

        <!-- 输出到文件，按天或者超过80MB分割 -->
        <RollingFile name="RollingFile" fileName="logs/xxx.log" filePattern="logs/$${date:yyyy-MM}/xjj-%d{yyyy-MM-dd}-%i.log.gz">
            <!-- 需要记录的级别 -->
            <!-- <ThresholdFilter level="info" onMatch="ACCEPT" onMismatch="DENY" /> -->
            <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss,SSS}:%4p %t (%F:%L) - %m%n" />
            <Policies>
                <OnStartupTriggeringPolicy />
                <TimeBasedTriggeringPolicy />
                <SizeBasedTriggeringPolicy size="80 MB" />
            </Policies>
        </RollingFile>
    </Appenders>
    <Loggers>
        <Root level="trace"> <!-- 全局配置 -->
            <AppenderRef ref="Console" />
            <AppenderRef ref="RollingFile"/>
        </Root>
        <!-- 为sql语句配置特殊的Log级别，方便调试 -->
        <Logger name="mars" level="info" additivity="false">
            <AppenderRef ref="Console" />
        </Logger>
    </Loggers>

</Configuration>

java sample code:

package mars;

import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Created by szhaoyu on 16/11/24.
 */
public class MarsLogTest {
    Logger logger = LoggerFactory.getLogger(MarsLogTest.class);

    @Test
    public void testLog() {
        logger.info("start logging ....");
        logger.error("o...meet a warnning here ...");
        logger.debug("Ok. I'm debugging here..");
        logger.warn("warning timeout ...!");
    }
}

output:

-- ::,:INFO Test worker (MarsLogTest.java:) - start logging ....
-- ::,:ERROR Test worker (MarsLogTest.java:) - o...meet a warnning here ...
-- ::,:WARN Test worker (MarsLogTest.java:) - warning timeout ...!