slfj+logback

1.pom.xml

<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <version>1.18.4</version>
</dependency>

<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-api</artifactId>
    <version>1.7.5</version>
</dependency>
<dependency>
    <groupId>ch.qos.logback</groupId>
    <artifactId>logback-classic</artifactId>
    <version>1.0.13</version>
</dependency>
2.logback.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--debug="true" : 打印logback内部状态（默认当logback运行出错时才会打印内部状态 ），配置该属性后打印条件如下（同时满足）：
    1、找到配置文件 2、配置文件是一个格式正确的xml文件 也可编程实现打印内部状态，例如： LoggerContext lc = (LoggerContext)
    LoggerFactory.getILoggerFactory(); StatusPrinter.print(lc); -->
<!-- scan="true" ： 自动扫描该配置文件，若有修改则重新加载该配置文件 -->
<!-- scanPeriod="30 seconds" : 配置自动扫面时间间隔（单位可以是：milliseconds, seconds, minutes
    or hours，默认为：milliseconds）， 默认为1分钟，scan="true"时该配置才会生效 -->
<configuration debug="false" scan="true" scanPeriod="30 seconds" packagingData="true">
    <!-- 设置 logger context 名称,一旦设置不可改变，默认为default -->
    <contextName>myAppName</contextName>

    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <!-- encoders are by default assigned the type ch.qos.logback.classic.encoder.PatternLayoutEncoder -->
        <encoder>
            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>

    <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <!-- 当前活动日志文件名 -->
        <file>./my_log.log</file>
        <!-- 文件滚动策略根据%d{patter}中的“patter”而定，此处为每天产生一个文件 -->
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!-- 归档文件名“.zip或.gz结尾”,表示归档文件自动压缩 -->
            <FileNamePattern>./my_log%d{yyyyMMdd}.log.zip</FileNamePattern>
            <maxHistory>30</maxHistory>
        </rollingPolicy>

        <!--rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
            <fileNamePattern>renhai%i.log</fileNamePattern>
            <minIndex>1</minIndex>
            <maxIndex>10</maxIndex>
        </rollingPolicy>

        <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
            <maxFileSize>20MB</maxFileSize>
        </triggeringPolicy-->

        <!-- <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
          rollover daily
          <fileNamePattern>mylog-%d{yyyy-MM-dd}.%i.log</fileNamePattern>
           each file should be at most 30MB, keep 60 days worth of history, but at most 20GB
           <maxFileSize>30MB</maxFileSize>
           <maxHistory>60</maxHistory>
           <totalSizeCap>20GB</totalSizeCap>
        </rollingPolicy> -->


        <encoder>
            <pattern>%d{HH:mm:ss.SSS}[%-5level][%thread]%logger{36} - %msg%n</pattern>
            <!-- <pattern>%d{HH:mm:ss.SSS}[%-5level][%thread] - %msg%n</pattern> -->
        </encoder>
    </appender>

    <!-- 日志级别若没显示定义，则继承最近的父logger（该logger需显示定义level,直到rootLogger）的日志级别-->
    <!-- logger的appender默认具有累加性（默认日志输出到当前logger的appender和所有祖先logger的appender中），可通过配置 “additivity”属性修改默认行为-->
    <logger name="com.yinz"  level="debug" additivity="false" >
        <appender-ref ref="FILE"/>
    </logger>

    <!-- 至多只能配置一个root -->
    <root level="debug">
        <appender-ref ref="STDOUT" />
        <appender-ref ref="FILE" />
    </root>
</configuration>
3.

import lombok.extern.slf4j.Slf4j;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

@Slf4j
public class Test2 {
    static Logger log1 = LoggerFactory.getLogger(Test2.class);

    public static void main(String[] args) {

        System.out.println(log1.isInfoEnabled());
        log1.info("你好啊{}", "01");
        log.info("cc");

    }
}


以上会打印到控制台和文件丽