springboot使用logback

最新推荐文章于 2025-06-20 12:16:02 发布

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最新推荐文章于 2025-06-20 12:16:02 发布

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分类专栏： springboot

本文链接：https://blog.youkuaiyun.com/huiyanshizhen21/article/details/88538271

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本文详细介绍了如何在SpringBoot项目中配置logback框架，包括日志级别、输出格式、文件滚动策略以及如何将日志保存至数据库。同时，文章还提供了在代码中使用日志的建议和示例。

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1.在src/main/resources添加logback-spring.xml 配置文件就可以被加载，默认的springboot集成了logback框架

<?xml version="1.0" encoding="utf-8"?>
<configuration>
    <appender name="consoleLog" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>
    <appender name="fileInfoLog" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>DEBUG</level>
            <onMatch>DENY</onMatch>
            <onMismatch>ACCEPT</onMismatch>
        </filter>
        <encoder>
      		<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
    	</encoder>
        <!--滚动策略-->
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!--路径-->
            <fileNamePattern>/var/log/cuss/translation/info.%d.log</fileNamePattern>
        </rollingPolicy>
    </appender>
    <appender name="fileErrorLog" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>ERROR</level>
        </filter>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
        <!--滚动策略-->
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!--路径-->
            <fileNamePattern>/var/log/cuss/translation/error.%d.log</fileNamePattern>
        </rollingPolicy>
    </appender>
    
<!--     <appender name="DB" class="ch.qos.logback.classic.db.DBAppender">
		<connectionSource class="ch.qos.logback.core.db.DriverManagerConnectionSource">
			<driverClass>com.mysql.jdbc.Driver</driverClass>
			<url>jdbc:mysql://xxxx:3306/log?useUnicode=true&amp;characterEncoding=UTF-8</url>
			<user>root</user>
			<password>root</password>
		</connectionSource>
	</appender>
	
	 <appender name ="ASYNC" class= "ch.qos.logback.classic.AsyncAppender">  
            不丢失日志.默认的,如果队列的80%已满,则会丢弃TRACT、DEBUG、INFO级别的日志  
            <discardingThreshold >0</discardingThreshold>  
            更改默认的队列的深度,该值会影响性能.默认值为256  
            <queueSize>512</queueSize>  
            添加附加的appender,最多只能添加一个  
         <appender-ref ref ="DB"/>  
     </appender>   -->
    
    <root level="info">
        <appender-ref ref="consoleLog" />
    </root>
    
    <logger name="com.alibaba.druid" level="error" additivity="false">
		<appender-ref ref="consoleLog" />
		<appender-ref ref="fileErrorLog" />
	</logger>
	
	<logger name="org.springframework" level="error" additivity="false">
		<appender-ref ref="consoleLog" />
		<appender-ref ref="fileErrorLog" />
	</logger>
	
	<logger name="org.hibernate" level="error" additivity="false">
		<appender-ref ref="consoleLog" />
		<appender-ref ref="fileErrorLog" />
	</logger>
	
	<logger name="org.apache" level="error" additivity="false">
		<appender-ref ref="consoleLog" />
		<appender-ref ref="fileErrorLog" />
	</logger>
	
	<logger name="com.example.demo" level="debug" additivity="false">
	    <appender-ref ref="fileInfoLog" />
		<appender-ref ref="fileErrorLog" />
		<appender-ref ref="consoleLog" />
		<!-- <appender-ref ref="ASYNC" /> -->
	</logger>
    
</configuration>

2.建议使用日志加上判断

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
private static final Logger LOGGER = LoggerFactory.getLogger(xxx.class);

    if(logger.isDebugEnabled()){
    	logger.debug("test logger helo");
    }

3.使用logback 保存到数据库

3.1.在jar包中找到sql建表语句，并执行

logback-classic-1.2.3-sources.jar
ch.qos.logback.classic.db.script.mysql.sql

3.2添加配置appender

<appender name="DB" class="ch.qos.logback.classic.db.DBAppender">
	<connectionSource class="ch.qos.logback.core.db.DriverManagerConnectionSource">
		<driverClass>com.mysql.jdbc.Driver</driverClass>
		<url>jdbc:mysql://xxxx:3306/log?useUnicode=true&amp;characterEncoding=UTF-8</url>
		<user>root</user>
		<password>root</password>
	</connectionSource>
</appender>

<appender name ="ASYNC" class= "ch.qos.logback.classic.AsyncAppender">  
	不丢失日志.默认的,如果队列的80%已满,则会丢弃TRACT、DEBUG、INFO级别的日志  
	<discardingThreshold >0</discardingThreshold>  
	更改默认的队列的深度,该值会影响性能.默认值为256  
	<queueSize>512</queueSize>  
	添加附加的appender,最多只能添加一个  
 <appender-ref ref ="DB"/>  
</appender>

3.3配置logger

<logger name=”xxxxxx” level=”info” additivity=”false”>
	<appender-ref ref=”ASYNC” />
</logger>

4.logback的jar包

<!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api -->
	<dependency>
	    <groupId>org.slf4j</groupId>
	    <artifactId>slf4j-api</artifactId>
	    <version>1.7.25</version>
	</dependency>


    <!-- https://mvnrepository.com/artifact/ch.qos.logback/logback-core
    logback-core:提供了LogBack的核心功能，是另外两个组件的基础 -->
	<dependency>
	    <groupId>ch.qos.logback</groupId>
	    <artifactId>logback-core</artifactId>
	    <version>1.2.3</version>
	</dependency>

    <!-- 实现了Slf4j的API，所以当想配合Slf4j使用时，需要引入logback-classic-->
    <dependency>
        <groupId>ch.qos.logback</groupId>
        <artifactId>logback-classic</artifactId>
        <version>1.2.3</version>
    </dependency>
    
	<!-- 为了集成Servlet环境而准备的，可提供HTTP-access的日志接口-->
    <dependency>
        <groupId>ch.qos.logback</groupId>
        <artifactId>logback-access</artifactId>
        <version>1.2.3</version>
    </dependency>