log4j的使用

log4j主要使用ERROR,WARN,INFO,DEBUG四种模式

优先级从高到低

log4j.rootLogger=INFO, stdout , R（将日志级别大于等于INFO级别的信息打印出来）

### 设置###log4j.rootLogger = info,stdout,D,E### 输出信息到控制抬 ###

定义stdout的输出端为控制台

log4j.appender.stdout = org.apache.log4j.ConsoleAppender log4j.appender.stdout.Target = System.out 定义stdout的输出layout是Pattern（灵活指定布局模式）log4j.appender.stdout.layout = org.apache.log4j.PatternLayout 输出的形式为一月 23, 2018 11:18:34 上午 org.apache.catalina.session.StandardSession expirelog4j.appender.stdout.layout.ConversionPattern = [%-5p] %d{yyyy-MM-dd HH:mm:ss,SSS} method:%l%n%m%n### 输出INFO 级别以上的日志到=/usr/logs/newManager_info.loglog4j.appender.D = org.apache.log4j.DailyRollingFileAppender 定义D的输出端为每天产生一个日志文件log4j.appender.D.File = /usr/logs/manager_info.loglog4j.appender.D.Append = truelog4j.appender.D.Threshold = INFOlog4j.appender.D.layout = org.apache.log4j.PatternLayoutlog4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n### 输出ERROR 级别以上的日志到=/usr/logs/newManager_error.loglog4j.appender.E = org.apache.log4j.DailyRollingFileAppenderlog4j.appender.E.File =/usr/logs/manager_error.loglog4j.appender.E.Append = truelog4j.appender.E.Threshold = ERRORlog4j.appender.E.layout = org.apache.log4j.PatternLayoutlog4j.appender.E.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n## MyBatis日志###############Log4j 4 SQL Output start#################log4j.logger.com.cesec.mapping=DEBUG#log4j.logger.com.springframework=INFO#log4j.logger.com.ibatis=INFO#log4j.logger.com.ibatis.common.jdbc.SimpleDataSource=INFO#log4j.logger.com.ibatis.common.jdbc.ScriptRunner=INFO#log4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapClientDelegate=INFO#log4j.logger.java.sql.Connection=INFO#log4j.logger.java.sql.Statement=INFO#log4j.logger.java.sql.PreparedStatement=INFO#log4j.logger.java.sql.ResultSet=INFO#log4j.logger.org.apache.ibatis.logging.commons.JakartaCommonsLoggingImpl=INFO#log4j.logger.java.sql=INFO,CONSOLE###############Log4j 4 SQL Output end###################

 

 spring项目加入log4j的使用

1.pom文件加入log4j的使用

     
       
     
      log4j
        
     
      log4j
        
     
      1.2.17
      
     2.spring的配置加载log4j的配置环境

       
     
      log4jConfigLocation
        
     
      classpath:log4j.properties
      
    

 有一篇比较好的文章 http://blog.csdn.net/azheng270/article/details/2173430/