转自 http://blog.youkuaiyun.com/projava/article/details/7344839
log4j默认的Threshold是输出大于等于某级别以上的内容,而不是用某个级别输出某个级别,文章通过继承DailyRollingFileAppender ,重写isAsSevereAsThreshold方法,则可以实现按照日志等级来输出内容。
public class LogAppender extends DailyRollingFileAppender {
@Override
public boolean isAsSevereAsThreshold(Priority priority) {
//只判断是否相等,而不判断优先级
return this.getThreshold().equals(priority);
}
}
顺便摘录下其源码:
public class LogAppender extends DailyRollingFileAppender {
@Override
public boolean isAsSevereAsThreshold(Priority priority) {
//只判断是否相等,而不判断优先级
return this.getThreshold().equals(priority);
}
}
log4j配置
log4j.rootLogger=info,stdout,info,debug,error
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=[%-5p] [%d{HH:mm:ss}] %c - %m%n
log4j.logger.info=info
log4j.appender.info=org.apache.log4j.DailyRollingFileAppender
log4j.appender.info.layout=org.apache.log4j.PatternLayout
log4j.appender.info.layout.ConversionPattern=[%-5p] [%d{HH:mm:ss}] %c - %m%n
log4j.appender.info.datePattern='.'yyyy-MM-dd
log4j.appender.info.Threshold = INFO
log4j.appender.info.append=true
log4j.appender.info.File=${webApp.root}/WEB-INF/logs/info.log
log4j.logger.debug=debug
log4j.appender.debug=org.apache.log4j.DailyRollingFileAppender
log4j.appender.debug.layout=org.apache.log4j.PatternLayout
log4j.appender.debug.layout.ConversionPattern=[%-5p] [%d{HH:mm:ss}] %c - %m%n
log4j.appender.debug.datePattern='.'yyyy-MM-dd
log4j.appender.debug.Threshold = DEBUG
log4j.appender.debug.append=true
log4j.appender.debug.File=${webApp.root}/WEB-INF/logs/debug.log
log4j.logger.error=error
log4j.appender.error=org.apache.log4j.DailyRollingFileAppender
log4j.appender.error.layout=org.apache.log4j.PatternLayout
log4j.appender.error.layout.ConversionPattern=[%-5p] [%d{HH:mm:ss}] %c - %m%n
log4j.appender.error.datePattern='.'yyyy-MM-dd
log4j.appender.error.Threshold = ERROR
log4j.appender.error.append=true
log4j.appender.error.File=${webApp.root}/WEB-INF/logs/error.log
重写后的配置
log4j.logger.info=info
<span style="BACKGROUND-COLOR: #33cc00">log4j.appender.info=com.company.LogAppender
</span>log4j.appender.info.layout=org.apache.log4j.PatternLayout
log4j.appender.info.layout.ConversionPattern=[%-5p] [%d{HH:mm:ss}] %c - %m%n
log4j.appender.info.datePattern='.'yyyy-MM-dd
log4j.appender.info.Threshold = INFO
log4j.appender.info.append=true
log4j.appender.info.File=${webApp.root}/WEB-INF/logs/info.log