maven依赖

               <dependency>
		    <groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.12</version>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
			<version>1.18.2</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-api</artifactId>
			<version>1.7.25</version>
		</dependency>
		<dependency>
			<groupId>ch.qos.logback</groupId>
			<artifactId>logback-classic</artifactId>
			<version>1.2.3</version>
		</dependency>

logback.xml配置（放到src/main/resources下即可）

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
	<!--定义日志文件的存储地址 勿在 LogBack 的配置中使用相对路径 -->
	<property name="LOG_HOME" value="c:/logback" />
	<!-- 控制台输出 -->
	<appender name="STDOUT"
		class="ch.qos.logback.core.ConsoleAppender">
		<encoder
			class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
			<!--格式化输出：%d表示日期，%thread表示线程名，%-5level：级别从左显示5个字符宽度%msg：日志消息，%n是换行符 -->
			<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
		</encoder>
	</appender>
	<!-- 按照每天生成日志文件 -->
	<appender name="FILE"
		class="ch.qos.logback.core.rolling.RollingFileAppender">
		<rollingPolicy
			class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
			<!--日志文件输出的文件名 -->
			<FileNamePattern>${LOG_HOME}/logback-%d{yyyy-MM-dd}.log
			</FileNamePattern>
			<!--日志文件保留天数 -->
			<MaxHistory>30</MaxHistory>
		</rollingPolicy>
		<encoder
			class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
			<!--格式化输出：%d表示日期，%thread表示线程名，%-5level：级别从左显示5个字符宽度%msg：日志消息，%n是换行符 -->
			<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
		</encoder>
		<!--日志文件最大的大小 -->
		<triggeringPolicy
			class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
			<MaxFileSize>10MB</MaxFileSize>
		</triggeringPolicy>
	</appender>

    <!-- <root level="INFO">
		<appender-ref ref="STDOUT" />
        <appender-ref ref="FILE" />
	</root> -->
	
    <!-- 指定某个包的日志输出级别 -->
	<logger name="cn.takujo.common" level="INFO" additivity="false">
        <appender-ref ref="STDOUT"/>
    </logger>
    
</configuration>

使用lombok的@Slf4j注解

@Slf4j
public class LogTest {

	@Test
	public void log() {
		log.info("info");
		log.warn("warn");
		log.debug("debug");
	}


}

输出结果，无debug级别

2018-11-03 14:37:57.270 [main] INFO  logbk.LogTest - info
2018-11-03 14:37:57.272 [main] WARN  logbk.LogTest - warn