java中日志的处理

在web.xml文件中配置 log4j

<!-- 上下文参数，用于log4j以及spring中使用 -->
<context-param>
<param-name>webAppRootKey</param-name>
<param-value>etloo.root</param-value>
</context-param>

<!-- 应用程序上下文参数，指定log4j日志框架使用的配置参数文件位置 -->
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>classpath:/log4j.properties</param-value>
</context-param>

<!-- 监听器，用于初始化log4j日志框架的 -->
<listener>
<listener-class>
org.springframework.web.util.Log4jConfigListener
</listener-class>
</listener>




log4g.properties 文件的详细的配置



log4j.rootLogger=INFO, drfa

log4j.appender.drfa=org.apache.log4j.DailyRollingFileAppender
log4j.appender.drfa.file=../logs/etloo.log
log4j.appender.drfa.DatePattern='.'yyyy-MM-dd'.txt'
log4j.appender.drfa.layout=org.apache.log4j.PatternLayout
log4j.appender.drfa.layout.ConversionPattern=%d %p%n Class: %c%nMethod: %t%n  Line: %L%n%m%n%n

log4j.logger.org.springframework=INFO


# ibatis
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m%n

log4j.logger.com.ibatis=debug
log4j.logger.com.ibatis.common.jdbc.SimpleDataSource=debug
log4j.logger.com.ibatis.common.jdbc.ScriptRunner=debug
log4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapClientDelegate=debug

log4j.logger.java.sql.Connection=debug
log4j.logger.java.sql.Statement=debug
log4j.logger.java.sql.PreparedStatement=debug,stdout