Log4J 2 配置：如何同时按大小和日期拆分日志文件？

Question

我需要每天创建一个新的日志文件，或者如果日志文件大小变为 250 MB。那么我怎样才能通过 log4j.properties 文件做到这一点呢？按天划分是可行的，但如果大小超过 250MB，则什么也不会发生。我当前的属性文件是：

 # Root logger option
log4j.rootLogger=INFO,console, file

# Direct log messages to a log file
log4j.appender.file=org.apache.log4j.rolling.RollingFileAppender
log4j.appender.file.encoding=UTF-8
log4j.appender.file.RollingPolicy=org.apache.log4j.rolling.TimeBasedRollingPolicy
log4j.appender.file.RollingPolicy.FileNamePattern=./logs/application_%d{dd-MM-yyyy}.log
log4j.appender.file.TriggeringPolicy=org.apache.log4j.rolling.SizeBasedTriggeringPolicy
log4j.appender.file.TriggeringPolicy.maxFileSize=250000
log4j.appender.rollingFile.MaxFileSize=10MB
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n

# configuration to print on console
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.Target=System.out
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n

Answer 1

根据以下 log4j link https://logging.apache.org/log4php/docs/appenders/rolling-file.html，您必须添加以下行。

log4j.appender.file=org.apache.log4j.rolling.RollingFileAppender
log4j.appender.file.TriggeringPolicy=org.apache.log4j.rolling.SizeBasedTriggeringPolicy
log4j.appender.file.TriggeringPolicy.maxFileSize=250000

注：

File Appender 应该是 RollingFileAppender
触发政策应该是SizeBasedTriggeringPolicy

编辑：

# Direct log messages to a log filelog4j.appender.file.encoding=UTF-8
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.TriggeringPolicy=org.apache.log4j.rolling.SizeBasedTriggeringPolicy
log4j.appender.file.File=${LOG_DIR}/application.log
log4j.appender.file.RollingPolicy.FileNamePattern=./logs/application_%d{dd-MM-yyyy}.log
log4j.appender.rfile.layout=org.apache.log4j.PatternLayout
log4j.appender.rfile.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
log4j.appender.file.MaxFileSize=250MB
log4j.appender.file.MaxBackupIndex=2
log4j.appender.file.append=true

您可以参考下面的完整示例。 https://howtodoinjava.com/log4j/log4j-rolling-file-appender/

Log4J 2 配置：如何同时按大小和日期拆分日志文件？

Log4J 2 configuration: How to split log files by size and by day at the same time?

java

logging

log4j

log4j2