SpringBoot项目实战（006）日志框架logback

说明

SpringBoot日志框架：slf4j+logback

安装

修改pom.xml，增加logging依赖：

    <dependency>
        <groupId>org.springframework.bootgroupId>
        <artifactId>spring-boot-starter-loggingartifactId>
        <version>2.1.1.RELEASEversion>
    dependency>

配置说明

注意，springboot自动识别以下日志配置文件：logging.properties、log4j2-spring.xml、log4j2.xml、logback-spring.xml、logback-spring.groovy、logback.xml、logback.groovy
resources下新增logback.xml配置文件：

<configuration scan="true" scanPeriod="60 seconds" debug="false">
    
    <property name="logpath" value="./logs">property>
    
    <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
        <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <pattern>%d{HH:mm:ss.SSS} %-5level %logger{80} - %msg%npattern>
            <charset>UTF-8charset>
        encoder>
    appender>

    <appender name="framework" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${logpath}/framework.logfile>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            
            <fileNamePattern>${logpath}/framework.%d{yyyy-MM-dd}.logfileNamePattern>
            
            <maxHistory>30maxHistory>
        rollingPolicy>
        <encoder charset="UTF-8">
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%npattern>
            <charset>UTF-8charset>
        encoder>
    appender>

    
    <logger name="com.it_laowu.springbootstudy.springbootstudydemo.core.config.AppConfig" level="debug" additivity="false">
        <appender-ref ref="console" />
    logger>

    
    <root level="info">
        <appender-ref ref="console"/><appender-ref ref="framework" />
    root>
configuration>

使用

比如AppConfig已经设置了特定的logger，我们在代码中输出：

public class AppConfig {
......
    private static final Logger logger = LoggerFactory.getLogger(AppConfig.class);
    public AppConfig(){
        logger.info("AppConfig start");
    }
}

debug一下，效果如下：

项目文件夹内也有logs目录，并且包含framework.log。

日志框架就这么简单，搞明白配置就可以了。