SpringBoot 配置 logback

前言

• 要实现功能：根据不同配置文件，logback日志保存路径不同
• 例如：开发环境Win10，日志保存路径为 D:\log，运行环境Linux系统下，日志保存路径为/log

配置 logback

• 添加依赖

<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-logging</artifactId>
</dependency>

• resources目录下新建logback-spring.xml配置文件，添加如下内容：

<?xml version="1.0" encoding="UTF-8"?>
<configuration scan="true" scanPeriod="60 seconds" debug="false">
	<!-- name值是变量名称 source值是变量值，即log日志保存路径，读application.yml配置，不需要${} -->
    <springProperty scope="context" name="LOG_HOME" source="logging.file.path"/>
    <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>[%d{HH:mm:ss.SSS}][%p][%c{40}][%t] %m%n</pattern>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>DEBUG</level>
        </filter>
    </appender>

    <appender name="mes" class="ch.qos.logback.core.rolling.RollingFileAppender">
    	<!-- 通过${LOG_HOME}调用日志路径变量 -->
        <File>${LOG_HOME}lmes.log</File>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${LOG_HOME}lmes.log.%d{yyyy-MM-dd}.gz</fileNamePattern>
            <maxHistory>10</maxHistory>
        </rollingPolicy>
        <encoder>
            <pattern>[%d{HH:mm:ss.SSS}][%p][%c{40}][%t] %m%n</pattern>
        </encoder>
    </appender>

    <appender name="error" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <File>${LOG_HOME}lmes.error.log</File>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${LOG_HOME}lmes.error.log.%d{yyyy-MM-dd}.gz</fileNamePattern>
            <maxHistory>10</maxHistory>
        </rollingPolicy>
        <encoder>
            <pattern>[%d{HH:mm:ss.SSS}][%p][%c{40}][%t] %m%n</pattern>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>ERROR</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
    </appender>

    <logger name="com.mes" additivity="false" level="INFO">
        <appender-ref ref="mes"/>
        <appender-ref ref="console"/>
    </logger>
    
    <logger name="com.mes.dao" level="DEBUG"/>
    
    <root level="DEBUG">
        <appender-ref ref="console"/>
        <appender-ref ref="error"/>
    </root>

</configuration>

• 在application-dev.yml配置文件，添加logback日志配置

# Windows 环境
logging:
  config: classpath:logback-spring.xml
  file:
    path: C:\log
# Linux 环境
logging:
  config: classpath:logback-spring.xml
  file:
    path: /log