log4j:ERROR Could not find value for key log4j.appender.error

我是在rootLogger末尾加入R就好了。

最终我的配置环境如下：

#设置日志的级别 ,多个以,分开(没有给出的，则不会被输出)
log4j.rootLogger=info,error,R

#DailyRollingFileAppender每天产生一个日志文件
log4j.appender.R=org.apache.log4j.DailyRollingFileAppender

#设置日志文件保存路径
log4j.appender.R.File=logs/backup.log

#日志输出格式
log4j.appender.R.layout.ConversionPattern=%-d{yyyy-MM-dd HH\:mm\:ss} [%c]-[%p] %m%n

#设置日志文件后缀名,决定着多长时间创建一个新的文件！yyyyMMdd每天一个，yyyyMMddHH第小时一个,...
log4j.appender.R.DatePattern='.'yyyy-MM-dd

#日志布局格式
log4j.appender.R.layout=org.apache.log4j.PatternLayout

时间： 2024-08-29 10:21:45

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