spring 中使用 log4j

一、在web.xml中配置：

   1、 配置项目路径，如果不配置webAppRootKey属性，默认的为webapp.root，为了避免项目冲突，建议配置，在log4j配置文件中就可以使用${orc.root}表示web目录绝对路径

 <context-param>
  <param-name>webAppRootKey</param-name>
  <param-value>orc.root</param-value>
 </context-param>

<!--由spring装载log4j配置文件-->

<context-param>
  <param-name>log4jConfigLocation</param-name>
  <param-value>/WEB-INF/log4j.properties</param-value>
 </context-param>

<!--Spring默认刷新Log4j配置文件的间隔,单位为millisecond-->
<context-param>
<param-name>log4jRefreshInterval</param-name>
<param-value>60000</param-value>
</context-param>

<!-- Web 项目 Spring 加载 Log4j 的监听 --> 

<listener>
  <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
 </listener>

2、编写log4j.properties文件

log4j.rootLogger=INFO,CONSOLE,ROLLING_FILE
#log4j.rootLogger=ERROR,ROLLING_FILE

###################
# Console Appender
###################
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.Target=System.out
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=[%p] %d %c - %m%n

########################
# Rolling File
########################
log4j.appender.ROLLING_FILE=org.apache.log4j.RollingFileAppender

#orc.root表示应用根目录
log4j.appender.ROLLING_FILE.File=${orc.root}/logs/orc.log
log4j.appender.ROLLING_FILE.Append=true
log4j.appender.ROLLING_FILE.MaxFileSize=5000KB
log4j.appender.ROLLING_FILE.MaxBackupIndex=100
log4j.appender.ROLLING_FILE.layout=org.apache.log4j.PatternLayout
log4j.appender.ROLLING_FILE.layout.ConversionPattern=[%p] %d %c - %m%n

log4j.logger.org.springframework.transaction=INFO
log4j.logger.com.longtop.bi=DEBUG
log4j.logger.com.ibatis=INFO
log4j.logger.java.sql=DEBUG
# Ignore DB2 read-only Warning
log4j.logger.org.hibernate.util.JDBCExceptionReporter=ERROR