log4j 应用例子

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   1. 打开log4j.properties文件
  2. 根据不同的package类配置不同的logger,Level, Appender,如
   #全局的日志级别
   log4j.rootLogger=ERROR
   #org.* 的日志级别和输出的Appender
   log4j.logger.org=ERROR, A1
   #com.java.test的日志级别和输出的Appender
   log4j.logger.com.java.test=DEBUG,A2
   #net.sf.hibernate的日志级别和输出的Appender
   log4j.logger.net.sf.hibernate=ERROR,A3
  3. 配置Appender
  log4j.appender.A1=org.apache.log4j.RollingFileAppender
  log4j.appender.A1.File=c:/logs/test-a1.log
  log4j.appender.A1.MaxFileSize=500KB
  log4j.appender.A1.MaxBackupIndex=50
  log4j.appender.A1.Append=true
  log4j.appender.A1.layout=org.apache.log4j.PatternLayout
  log4j.appender.A1.layout.ConversionPattern=%d{ISO8601} - [%p] [%C{1}] - %m%n
  log4j.appender.A2=org.apache.log4j.RollingFileAppender
  log4j.appender.A2.File=c:/logs/test-a1.log
  log4j.appender.A2.MaxFileSize=500KB
  log4j.appender.A2.MaxBackupIndex=50
  log4j.appender.A2.Append=true
  log4j.appender.A2.layout=org.apache.log4j.PatternLayout
  log4j.appender.A2.layout.ConversionPattern=%d{ISO8601} - [%p] [%C{1}] - %m%n
  log4j.appender.A3=org.apache.log4j.RollingFileAppender
  log4j.appender.A3.File=c:/logs/test-a3.log
  log4j.appender.A3.MaxFileSize=500KB
  log4j.appender.A3.MaxBackupIndex=50
  log4j.appender.A3.Append=true
  log4j.appender.A3.layout=org.apache.log4j.PatternLayout
  log4j.appender.A3.layout.ConversionPattern=%d{ISO8601} - [%p] [%C{1}] - %m%n

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