让mybatis在控制台里打印sql语句

一、添加log4j的jar包

二、在eclipse的src包下添加资源文件或xml文件

资源文件：名为log4j.properties

log4j.rootLogger=debug, stdout, logfile

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.logger.org.springframework=ERROR
log4j.logger.org.compass=ERROR

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.appender.logfile=org.apache.log4j.RollingFileAppender
log4j.appender.logfile.File=empi.log
log4j.appender.logfile.MaxFileSize=512KB
log4j.appender.logfile.MaxBackupIndex=3
log4j.appender.logfile.layout=org.apache.log4j.PatternLayout
log4j.appender.logfile.layout.ConversionPattern=%d %p [%c] - %m%n

xml文件名为log4j.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
  <appender name="console" class="org.apache.log4j.ConsoleAppender"> 
    <param name="Target" value="System.out"/> 
    <layout class="org.apache.log4j.PatternLayout"> 
      <param name="ConversionPattern" value="%d{MMM dd yyyy HH:mm:ss,SSS} %-5p %c - %m%n"/> 
    </layout> 
  </appender> 

  <appender class="org.apache.log4j.RollingFileAppender"  
        name="file">  
        <param name="File" value="ts.log" />  
        <param name="MaxFileSize" value="100KB" />  
        <param name="MaxBackupIndex" value="2" />  
        <layout class="org.apache.log4j.PatternLayout">  
            <param name="ConversionPattern"  
                value="=%d %-5p [%t] %-17c{2} (%13F:%L) %3x - %m%n" />  
        </layout>  
    </appender>  

  <category name="net.carefx" additivity="false">
<priority value="DEBUG"/>
<appender-ref ref="console"/>
</category>
    <category name="org.springframework" additivity="false">
        <priority value="ERROR"/>
        <appender-ref ref="console"/>
    </category>    
    <category name="org.springframework.orm.ibatis3" additivity="false">
        <priority value="ERROR"/>
        <appender-ref ref="console"/>
    </category> 
     <category name="org.apache.ibatis" additivity="false">
        <priority value="DEBUG"/>
        <appender-ref ref="console"/>
    </category>   
     <category name="java.sql" additivity="false">
        <priority value="ERROR"/>
        <appender-ref ref="console"/>
    </category>

    <logger name="org.apache.ibatis.common.jdbc.SimpleDataSource">  
        <level value="debug" />  
    </logger>  

    <logger name="org.apache.ibatis.common.jdbc.SimpleDataSource">  
        <level value="debug" />  
    </logger>  

    <logger name="org.apache.ibatis.common.jdbc.ScriptRunner">  
        <level value="debug" />  
    </logger>  

    <logger name="org.apache.ibatis.common.jdbc.SqlMapClientDelegate">  
        <level value="debug" />  
    </logger>  

    <logger name="java.sql.Connection">  
        <level value="debug" />  
    </logger>  

    <logger name="java.sql.Statement">  
        <level value="debug" />  
    </logger>  

    <logger name="java.sql.PreparedStatement">  
        <level value="debug" />  
    </logger>  

    <logger name="java.sql.ResultSet">  
        <level value="debug" />  
    </logger>     
  <root> 
    <priority value ="ERROR" /> 
    <appender-ref ref="console" /> 
  </root>

</log4j:configuration>

三、这样就可以在控制台里打印sql语句了，编写完毕，希望对大家有所帮助了(^_^)！