ibatis配置log4j输出sql语句等日志信息

    步骤如下：

1. 建立一个log4j.properties文件，放到工程源文件夹下，如果是eclipse那么放到src下，eclipse会自动将这个文件加载到class目录下。如下图
   
   
   
2. 将log4j.jar和commons-logging.jar放到项目的类路径中。
3. log4j.properties文件的配置如下:
   
   

   #--------------------------------
   #
   log4j.rootLogger=DEBUG, stdout, fileout
   #log4j.logger.test=info
   #log4j.logger.org.apache.jasper = DEBUG
   #log4j.logger.org.apache.catalina.startup.TldConfig = DEBUG
   #log4j.logger.org.apache.catalina.session.ManagerBase = DEBUG
   
   log4j.logger.com.fiscal = DEBUG
   log4j.logger.com.system = DEBUG
   
   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
   log4j.logger.java.sql.ResultSet = DEBUG
   
   log4j.appender.stdout=org.apache.log4j.ConsoleAppender
   
   log4j.appender.fileout=org.apache.log4j.RollingFileAppender
   log4j.appender.fileout.File=C:\\ibatis.log
   log4j.appender.fileout.MaxFileSize=10000KB
   
   log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
   log4j.appender.stdout.layout.ConversionPattern=[%-5p] %d{yyyy-MM-dd HH:mm:ss} :%m%n
   log4j.appender.fileout.layout=org.apache.log4j.PatternLayout
   log4j.appender.fileout.layout.ConversionPattern=[%-5p]_%d{yyyy-MM-dd HH:mm:ss} :%m%n
   
   #log4j.appender.stdout.layout=org.apache.log4j.SimpleLayout
   
   # log4j.logger.org=info
   #--------------------------------