Spring Boot Log4j2配置

灰太狼 2022-06-07 00:19 238阅读 0赞

# pom.xml #

<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter</artifactId>
        <exclusions>
            <exclusion>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-logging</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-log4j2</artifactId>
    </dependency>

# application.properties #

指定log4j2配置文件的位置与名称。

logging.config=classpath:log4j2.properties

# log4j2.properties #

常用配置，控制台输出，按日滚动日志。

rootLogger.appenderRef.rolling.ref.level可以配置日志级别，这里不作演示。

特色：日志按日志级别输出彩色日志。

name=PropertiesConfig
    property.filename=logs
    appenders=console, rolling
    
    # rootLogger
    rootLogger.level=info
    rootLogger.appenderRef.stdout.ref=Stdout
    rootLogger.appenderRef.rolling.ref=InfoRollingFile
    
    # console
    appender.console.type=Console
    appender.console.name=Stdout
    appender.console.layout.type=PatternLayout
    appender.console.layout.pattern=%highlight{%d{MM-dd HH:mm:ss.SSS} [%5p] [%40.40c{
       1.}:%3L] - %m%n}{FATAL=white, ERROR=red, WARN=blue, INFO=Green, DEBUG=Yellow, TRACE=blue}
    
    # rolling file
    appender.rolling.type=RollingFile
    appender.rolling.name=InfoRollingFile
    appender.rolling.fileName=./logs/rolling.log
    appender.rolling.filePattern=./logs/rolling_%d{yyyy-MM-dd}_%i.log
    appender.rolling.layout.type=PatternLayout
    appender.rolling.layout.pattern=%highlight{%d{MM-dd HH:mm:ss.SSS} [%5p] [%40.40c{
       1.}:%3L] - %m%n}{FATAL=white, ERROR=red, WARN=blue, INFO=Green, DEBUG=Yellow, TRACE=blue}
    appender.rolling.policies.type=Policies
    appender.rolling.policies.time.type=TimeBasedTriggeringPolicy
    appender.rolling.policies.time.interval=1
    appender.rolling.policies.time.modulate=true
    appender.rolling.policies.size.type=SizeBasedTriggeringPolicy
    appender.rolling.policies.size.size=20M
    appender.rolling.strategy.type=DefaultRolloverStrategy
    appender.rolling.strategy.max=100

![这里写图片描述][SouthEast]

# 优化 #

分别只打印 debug、info、error 日志到对应的log文件中.

name=PropertiesConfig
    # 公共变量
    # 文件路径
    property.filePath=logs
    property.filePattern=logs/%d{yyyy-MM-dd}
    # 输出格式
    property.layoutPattern=%highlight{%d{MM-dd HH:mm:ss.SSS} [%5p] [%40.40c{
       1.}:%3L] - %m%n}{FATAL=white, ERROR=red, WARN=blue, INFO=Green, DEBUG=Yellow, TRACE=blue}
    # 记录器
    appenders=Console,Debug,Info,Error
    # 根记录器，所有记录器的父辈
    rootLogger.level=debug
    # 级别过滤（过滤日志记录）
    # filters = threshold
    filter.threshold.type=ThresholdFilter
    # 只记录debug级别以上的日志，大小写无关：(ALL<)TRACE<DEBUG<INFO<WARN<ERROR<FATAL(<OFF)
    filter.threshold.level=debug
    # console
    appender.Console.type=Console
    appender.Console.name=Stdout
    appender.Console.layout.type=PatternLayout
    appender.Console.layout.pattern=${layoutPattern}
    rootLogger.appenderRef.stdout.ref=Stdout
    # debug rolling file
    appender.Debug.type=RollingFile
    appender.Debug.name=DebugRollingFile
    appender.Debug.fileName=${filePath}/debug.log
    appender.Debug.filePattern=${filePattern}/debug_%d{yyyy-MM-dd}_%i.log
    appender.Debug.layout.type=PatternLayout
    appender.Debug.layout.pattern=${layoutPattern}
    appender.Debug.policies.type=Policies
    appender.Debug.policies.time.type=TimeBasedTriggeringPolicy
    appender.Debug.policies.time.interval=1
    appender.Debug.policies.time.modulate=true
    appender.Debug.policies.size.type=SizeBasedTriggeringPolicy
    appender.Debug.policies.size.size=20M
    appender.Debug.strategy.type=DefaultRolloverStrategy
    appender.Debug.strategy.max=100
    # 过滤debug以上信息
    appender.Debug.filter.threshold.type=ThresholdFilter
    appender.Debug.filter.threshold.level=INFO
    appender.Debug.filter.threshold.onMatch=DENY
    appender.Debug.filter.threshold.onMisMatch=NEUTRAL
    # InfoRollingFile 日志级别
    rootLogger.appenderRef.Debug.level=debug
    rootLogger.appenderRef.Debug.ref=DebugRollingFile
    # info rolling file
    appender.Info.type=RollingFile
    appender.Info.name=InfoRollingFile
    appender.Info.fileName=${filePath}/info.log
    appender.Info.filePattern=${filePattern}/info_%d{yyyy-MM-dd}_%i.log
    appender.Info.layout.type=PatternLayout
    appender.Info.layout.pattern=${layoutPattern}
    appender.Info.policies.type=Policies
    appender.Info.policies.time.type=TimeBasedTriggeringPolicy
    appender.Info.policies.time.interval=1
    appender.Info.policies.time.modulate=true
    appender.Info.policies.size.type=SizeBasedTriggeringPolicy
    appender.Info.policies.size.size=20M
    appender.Info.strategy.type=DefaultRolloverStrategy
    appender.Info.strategy.max=100
    # 过滤 info 以上信息,只输出 info 级别日志
    appender.Info.filter.threshold.type=ThresholdFilter
    appender.Info.filter.threshold.level=warn
    appender.Info.filter.threshold.onMatch=DENY
    appender.Info.filter.threshold.onMisMatch=NEUTRAL
    # InfoRollingFile 日志级别
    rootLogger.appenderRef.Info.level=info
    rootLogger.appenderRef.Info.ref=InfoRollingFile
    # error rolling file
    appender.Error.type=RollingFile
    appender.Error.name=ErrorRollingFile
    appender.Error.fileName=${filePath}/error.log
    appender.Error.filePattern=${filePattern}/error_%d{yyyy-MM-dd}_%i.log
    appender.Error.layout.type=PatternLayout
    appender.Error.layout.pattern=${layoutPattern}
    appender.Error.policies.type=Policies
    appender.Error.policies.time.type=TimeBasedTriggeringPolicy
    appender.Error.policies.time.interval=1
    appender.Error.policies.time.modulate=true
    appender.Error.policies.size.type=SizeBasedTriggeringPolicy
    appender.Error.policies.size.size=20M
    appender.Error.strategy.type=DefaultRolloverStrategy
    appender.Error.strategy.max=100
    # 过滤 error 以上信息,只输出 error 级别日志
    appender.Error.filter.threshold.type=ThresholdFilter
    appender.Error.filter.threshold.level=fatal
    appender.Error.filter.threshold.onMatch=DENY
    appender.Error.filter.threshold.onMisMatch=NEUTRAL
    # ErrorRollingFile 日志级别
    rootLogger.appenderRef.Error.level=error
    rootLogger.appenderRef.Error.ref=ErrorRollingFile

如图：

![这里写图片描述][70]

[SouthEast]: /images/20220607/97bc93f11a1342e8915c13d57f6594bd.png
[70]: /images/20220607/7e62bc83a50746be95d591f3d00b4dff.png