我正在尝试使用log4j2从FileAppender切换到RollingFileAppender(在beta3和beta4 jar中都发生)。
我已将其配置为:
<RollingFile name="RollingFile" fileName="${logdir}/${filename}"
filePattern="${logdir}/app-%d{yyyy-MM-dd-hh-mm-ss}_%i.log" >
<PatternLayout>
<pattern>%d %p %C{1.} [%t] %m%n</pattern>
</PatternLayout>
<Policies>
<OnStartupTriggeringPolicy/>
</Policies>
<DefaultRolloverStrategy max="20"/>
</RollingFile>
...
<loggers>
<root level="ERROR">
<appender-ref ref="RollingFile"/>
<appender-ref ref="STDOUT"/>
</root>
...
在代码中,我尝试通过以下方式获取记录器:
Logger logger = LogManager.getLogger(this.getClass());
但是我运行它时出现了以下异常:
2013-02-01 17:56:54,773 ERROR Unable to invoke method createAppender in class org.apache.logging.log4j.core.appender.RollingFileAppender for element RollingFile java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.logging.log4j.core.config.BaseConfiguration.createPluginObject(BaseConfiguration.java:723) at org.apache.logging.log4j.core.config.BaseConfiguration.createConfiguration(BaseConfiguration.java:489) at org.apache.logging.log4j.core.config.BaseConfiguration.createConfiguration(BaseConfiguration.java:481) at org.apache.logging.log4j.core.config.BaseConfiguration.doConfigure(BaseConfiguration.java:162) at org.apache.logging.log4j.core.config.BaseConfiguration.start(BaseConfiguration.java:120) at org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:271) at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:287) at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:139) at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:76) at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:31) at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:342) at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:301) ... Caused by: java.lang.ClassCastException: org.apache.logging.log4j.core.appender.FileManager cannot be cast to org.apache.logging.log4j.core.appender.rolling.RollingFileManager at org.apache.logging.log4j.core.appender.rolling.RollingFileManager.getFileManager(RollingFileManager.java:73) at org.apache.logging.log4j.core.appender.RollingFileAppender.createAppender(RollingFileAppender.java:140) ... 18 more
看起来配置文件已经被读取,但是appender正在尝试创建,但不确定我做错了什么。
我尝试过复制其他人的RollingFileAppender配置,但仍然出现上述错误。
谢谢。
fileName
的两个不同的Appenders
。 - MikeW