您好，我正在尝试使用 log4j DailyRollingFileAppender 将当前日期附加到文件名，但它不起作用。我使用了如下配置。请为此建议一个解决方案
特性
log4j.rootLogger = DEBUG, rollingAppender
log4j.appender.rollingAppender=org.apache.log4j.DailyRollingFileAppender
log4j.appender.rollingAppender.DatePattern='.'yyyy-MM-dd
log4j.appender.rollingAppender.File=F:/temp/app.log
log4j.appender.rollingAppender.layout=org.apache.log4j.PatternLayout
log4j.appender.rollingAppender.layout.ConversionPattern=[%p] %d %c %M - %m%n
我期望日志文件为 app2014-11-07.log，但它仍然是 app.log
If you're using log4j 1.x, we strongly recommend that you use org.apache.log4j.rolling.RollingFileAppender https://logging.apache.org/log4j/extras/apidocs/org/apache/log4j/rolling/RollingFileAppender.html 1 instead of org.apache.log4j.DailyRollingFileAppender https://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/DailyRollingFileAppender.html (may lose messages, Bug 43374 https://issues.apache.org/bugzilla/show_bug.cgi?id=43374).
所以你的appender的配置可以是：
log4j.rootLogger = DEBUG, rollingAppender
log4j.appender.rollingAppender=org.apache.log4j.rolling.RollingFileAppender
log4j.appender.rollingAppender.rollingPolicy=org.apache.log4j.rolling.TimeBasedRollingPolicy
log4j.appender.rollingAppender.rollingPolicy.fileNamePattern=F:/temp/app%d{yyyy-MM-dd}.log
log4j.appender.rollingAppender.layout=org.apache.log4j.PatternLayout
log4j.appender.rollingAppender.layout.ConversionPattern=[%p] %d %c %M - %m%n
Notes
- 在这种情况下，您需要添加相应的 jar (apache-log4j-extras-1.2.17.jar http://search.maven.org/remotecontent?filepath=log4j/apache-log4j-extras/1.2.17/apache-log4j-extras-1.2.17.jar).
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