SpringBoot使用slf4j日志并输出到文件中的操作方法

public class Car{
//点火
public void fire(){
log.trace("fire")
...
}

//挂档
public void gear(int gear){
log.trace("gear")
//记录档位
log.debug(gear)
...
}

public void static main(String[] args){
Car car = new Car();
car.fire();
car.clutch();
car.gear(1);
car.looseBrake();
log.info("car is ready to run faster !");
}
可以看到，运行完looseBrake方法之后，使用info记录了车的状态，车已经完成了起步了，可以踩油门加速了。

//挂档
public void gear(int gear){
log.trace("gear")
//记录档位
log.debug(gear)
if(gear > 1){
log.warn("gear "+ gear +" is too high !")
}
...
}

public void static main(String[] args){
Car car = new Car();
try{
car.fire();
car.clutch();
car.gear(1);
car.looseBrake();
}catch(Exception e){
log.error("run failed !",e.getCause())
}
log.info("car is ready to run faster !");
}

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

<?xml version="1.0" encoding="UTF-8"?>
<configuration scan="true" scanPeriod="60 seconds" debug="false">
    <contextName>logback</contextName>
    <!--输出到控制台-->
    <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%d{HH:mm:ss} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>
    <!--按天生成日志,即一天只生成一个文件夹和一个日志文件-->
    <appender name="logFile" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <Prudent>true</Prudent>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <FileNamePattern>
                applog/%d{yyyy-MM-dd}/%d{yyyy-MM-dd}.log
            </FileNamePattern>
        </rollingPolicy>
        <layout class="ch.qos.logback.classic.PatternLayout">
            <Pattern>
                %d{yyyy-MM-dd HH:mm:ss} -%msg%n
            </Pattern>
        </layout>
    </appender>
    <!-- logger节点，可选节点，作用是指明具体的包或类的日志输出级别，
    以及要使用的<appender>（可以把<appender>理解为一个日志模板）。
    addtivity：非必写属性，是否向上级loger传递打印信息。默认是true-->
    <logger name="com.framework.job" additivity="false">
        <appender-ref ref="console"/>
        <appender-ref ref="logFile"/>
    </logger>
    <!--项目的整体的日志打印级别为info-->
    <root level="info">
        <appender-ref ref="console"/>
        <appender-ref ref="logFile"/>
    </root>
</configuration>

logging:
  file: applog/sys.log
  level:
    com:
      leshangju:
        prism:
          auth:
            dao: debug
          usershop:
            dao: debug
          loginuser:
            dao: debug

logging.level.com.framework.job : info

@Slf4j
public class MyJob extends QuartzJobBean {
    @Override
    protected void executeInternal(JobExecutionContext context) throws JobExecutionException {
        System.out.println("启动定时任务 My Job：" + LocalDateTime.now());
        log.trace("进入了myjob任务");
        try {
            Thread.sleep(3000);
            log.trace("睡了3秒");
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        log.info("结束任务！");
        System.out.println("end  My Job：" + LocalDateTime.now());
    }
}