SpringBoot日志（logger）

最新推荐文章于 2025-04-08 21:39:50 发布

百卿BaiQing

最新推荐文章于 2025-04-08 21:39:50 发布

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分类专栏：日志文章标签： logback logging

本文链接：https://blog.youkuaiyun.com/qq_39288961/article/details/108665393

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本文介绍了如何在SpringBoot中配置logback.xml，详细讲解了日志的生成位置，以及如何输出info和error级别的日志，通过测试代码展示了日志的使用方法。

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1.配置logback.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration scan="true" scanPeriod="30 seconds" debug="false">
    <!-- 彩色日志 -->
    <!-- 彩色日志依赖的渲染类 -->
    <conversionRule conversionWord="clr" converterClass="org.springframework.boot.logging.logback.ColorConverter" />
    <conversionRule conversionWord="wex" converterClass="org.springframework.boot.logging.logback.WhitespaceThrowableProxyConverter" />
    <conversionRule conversionWord="wEx" converterClass="org.springframework.boot.logging.logback.ExtendedWhitespaceThrowableProxyConverter" />
    <contextName>admin</contextName>
    <property name="log.charset" value="utf-8" />
    <property name="log.pattern" value="${log.pattern:-%clr(%d{yyyy-MM-dd HH:mm:ss.SSS}){faint} %clr(${LOG_LEVEL_PATTERN:-%5p}) %clr(${PID:- }){magenta} %clr(---){faint} %clr([%thread]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n${LOG_EXCEPTION_CONVERSION_WORD:-%wEx}}"  />
    <property name="log.path" value="logs/admin"/>
    <!--输出到控制台-->
    <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>${log.pattern}</pattern>
            <charset>${log.charset}</charset>
        </encoder>
    </appender>

    <!-- Log file error output -->
    <appender name="error" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${log.path}/error.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
            <fileNamePattern>${log.path}/%d{yyyy-MM}/error.%d{yyyy-MM-dd}.%i.log.gz</fileNamePattern>
            <maxFileSize>50MB</maxFileSize>
            <maxHistory>30</maxHistory>
        </rollingPolicy>
        <encoder>
            <pattern>%date [%thread] %-5level [%logger{50}] %file:%line - %msg%n</pattern>
            <charset>UTF-8</charset>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>ERROR</level>
        </filter>
    </appender>

    <!-- Log file info output -->
    <appender name="info" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${log.path}/info.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
            <fileNamePattern>${log.path}/%d{yyyy-MM}/info.%d{yyyy-MM-dd}.%i.log.gz</fileNamePattern>
            <maxFileSize>50MB</maxFileSize>
            <maxHistory>30</maxHistory>
        </rollingPolicy>
        <encoder>
            <pattern>%date [%thread] %-5level [%logger{50}] %file:%line - %msg%n</pattern>
            <charset>UTF-8</charset>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>INFO</level>
        </filter>
    </appender>

    <!--普通日志输出到控制台-->
    <root level="info">
        <appender-ref ref="console" />
        <appender-ref ref="error"/>
        <appender-ref ref="info"/>
    </root>

    <!--监控sql日志输出 -->
    <logger name="jdbc.sqlonly" level="DEBUG" additivity="false">
        <appender-ref ref="console" />
    </logger>

    <logger name="jdbc.resultset" level="ERROR" additivity="false">
        <appender-ref ref="console" />
    </logger>

    <!--  如想看到表格数据，将OFF改为INFO  -->
    <logger name="jdbc.resultsettable" level="OFF" additivity="false">
        <appender-ref ref="console" />
    </logger>

    <logger name="jdbc.connection" level="OFF" additivity="false">
        <appender-ref ref="console" />
    </logger>

    <logger name="jdbc.sqltiming" level="OFF" additivity="false">
        <appender-ref ref="console" />
    </logger>

    <logger name="jdbc.audit" level="OFF" additivity="false">
        <appender-ref ref="console" />
    </logger>
</configuration>

2.测试代码

    Logger logger = LoggerFactory.getLogger(getClass());
    @Test
    void contextLoads() {
        logger.info("这是info日志...");
        logger.error("这是error日志。。。");
        logger.debug("这是debug日志。。");
        logger.trace("这是trace日志。。。");
        logger.warn("这是warn日志。。");
        /**
         * Spring boot 日志默认级别 warn< error <info
         */
    }