mybatis sql异常打印到log4j文件

mybatis sql错误打印到log4j文件
<configuration>
  <settings>
    ...
    <setting name="logImpl" value="LOG4J"/>
    ...
  </settings>
</configuration>

http://mybatis.github.io/mybatis-3/logging.html

http://www.sjsjw.com/kf_other/article/030968ABA025838.asp