简介

本博客介绍了springBoot的日志部分功能

在pom文件中引入maven依赖

<!--添加日志依赖-->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-logging</artifactId>
</dependency>
<!--添加lombok依赖-->
<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <optional>true</optional>
</dependency>

配置文件添加日志信息

logging:
  config: classpath:logback-spring.xml
  level:
    com:
      software: INFO

在resources文件夹下添加logback-spring.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <!--定义日志文件的存储路径 勿在LogBack的配置中使用相对路径-->
    <property name="PATH" value="logs"></property>

    <!--控制台输出-->
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <!--格式化输出：%d表示日期，%thread表示线程名，%-5level表示级别从左显示5个字符宽度，%msg表示
            日志信息，%n表示换行-->
            <Pattern>[%date{yyyy-MM-dd HH:mm:ss}] [%thread] [%-5level] --%mdc{client}%msg%n</Pattern>
        </encoder>
    </appender>

    <appender name="TRACE_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${PATH}/trace.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <FileNamePattern>logs/trace.%d{yyyy-MM-dd}.log</FileNamePattern>
        </rollingPolicy>
        <layout>
            <pattern>[%date{yyyy-MM-dd HH:mm:ss}] [%-5level] [%logger:%line]--%mdc{client} %msg%n</pattern>
        </layout>
    </appender>

    <!--日志记录器，日期滚动记录-->
    <appender name="INFO_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <!--正在记录的日志文件的路径和文件名-->
        <file>${PATH}/info.log</file>
        <!--日志记录器的滚动策略，按照日志，文件大小记录-->
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <FileNamePattern>logs/info.%d{yyyy-MM-dd}.log</FileNamePattern>
        </rollingPolicy>
        <layout>
            <pattern>[%date{yyyy-MM-dd HH:mm:ss}] [%-5level] [%logger:%line]--%mdc{client} %msg%n</pattern>
        </layout>
        <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <pattern>%d %-5level %logger Line:%-3L - %msg%n</pattern>
            <charset>utf-8</charset>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>INFO</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
    </appender>

    <appender name="DEBUG_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${PATH}/debug.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <FileNamePattern>logs/debug.%d{yyyy-MM-dd}.log</FileNamePattern>
        </rollingPolicy>
        <layout>
            <pattern>[%date{yyyy-MM-dd HH:mm:ss}] [%-5level] [%logger:%line]--%mdc{client} %msg%n</pattern>
        </layout>
        <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <pattern>%d %-5level %logger Line:%-3L - %msg%n</pattern>
            <charset>utf-8</charset>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>DEBUG</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
    </appender>

    <appender name="WARN_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${PATH}/warn.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <FileNamePattern>logs/warn.%d{yyyy-MM-dd}.log</FileNamePattern>
        </rollingPolicy>
        <layout>
            <pattern>[%date{yyyy-MM-dd HH:mm:ss}] [%-5level] [%logger:%line]--%mdc{client} %msg%n</pattern>
        </layout>
        <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <pattern>%d %-5level %logger Line:%-3L - %msg%n</pattern>
            <charset>utf-8</charset>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>WARN</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
    </appender>

    <appender name="ERROR_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${PATH}/error.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <FileNamePattern>logs/error.%d{yyyy-MM-dd}.log</FileNamePattern>
        </rollingPolicy>
        <layout>
            <pattern>[%date{yyyy-MM-dd HH:mm:ss}] [%-5level] [%logger:%line]--%mdc{client} %msg%n</pattern>
        </layout>
        <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <pattern>%d %-5level %logger Line:%-3L - %msg%n</pattern>
            <charset>utf-8</charset>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>ERROR</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
    </appender>

    <!-- 日志输出级别 -->
    <root level="TRACE">
        <appender-ref ref="TRACE_FILE" />
        <appender-ref ref="INFO_FILE" />
        <appender-ref ref="DEBUG_FILE" />
        <appender-ref ref="WARN_FILE" />
        <appender-ref ref="ERROR_FILE" />
    </root>
    <!--当把level设置成debug时，控制台才会输出log.debug中的数据-->
    <root level="INFO">
        <appender-ref ref="STDOUT" />
    </root>
</configuration>

日志使用

在想要使用日志的文件中，添加@Slf4j标签