logback小记

1、需要的maven依赖：

<dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-classic</artifactId>
            <version>1.2.3</version>
            <!--<scope>test</scope>-->
        </dependency>
        <!-- https://mvnrepository.com/artifact/ch.qos.logback/logback-core -->
        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-core</artifactId>
            <version>1.2.3</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.21</version>
        </dependency>

 

 

2、需要配置lockback(-test).xml 默认会查找使用这个xml文件的配置

<?xml version="1.0" encoding="UTF-8"?>
<configuration scan = "true" scanPeriod="60">

  <!--只输出到控制台-->
  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
    <layout class="ch.qos.logback.classic.PatternLayout">
      <Pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</Pattern>
    </layout>
  </appender>

  <!--输出日志到文件-->
  <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
    <!--日志的输出路径-->
    <file>logs/MyLog.log</file>
    <append>true</append>
    <rollingPolicy class ="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
      <fileNamePattern>logs/heuristic-%d{yyyy-MM-dd}.log</fileNamePattern>
      <!--保留30天-->
      <maxHistory>30</maxHistory>
    </rollingPolicy>
    <layout class="ch.qos.logback.classic.PatternLayout"  >
      <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
    </layout>
  </appender>

  <!--指定哪些包使用日志功能-->
  <logger name="logbackDemo" level="error"/>
 <!-- <logger name="logbackDemo.LogbackDemo1" level="info"/>-->

  <root level="debug">
    <appender-ref ref="STDOUT" />
    <appender-ref ref="FILE" />
  </root>
</configuration>

 

  3、测试日志：

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Description: 测试logback的日志demo
 */
public class LogbackDemo {
  private static Logger logger = LoggerFactory.getLogger(LogbackDemo.class);

    public static void main(String[] args) {
        logger.info("info");
        logger.debug("debug");
        logger.error("error");
    }
}

  上面的配置中只会打印error级别的日志信息。

 

  好了以上就logback的简单配置和使用