MyBatis输出sql需要log4j.properties配置

 # Global logging configuration
 log4j.rootLogger=info,stdout,console,logfile
 # MyBatis logging configuration...
 log4j.logger.com.test.dao=DEBUG
 #log4j.logger.com.test.mappers=DEBUG
 log4j.appender.stdout=org.apache.log4j.ConsoleAppender
 log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
 log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH\:mm\:ss} %5p [%t] - %m%n
 # Console output...
 log4j.appender.console.ImmediateFlush=true
 log4j.appender.console.Target=System.out
 log4j.appender.logfile=org.apache.log4j.DailyRollingFileAppender
 log4j.appender.logfile.File=${dir}/debug.log
 log4j.appender.logfile.DatePattern='_'yyyy-MM-dd'.log'
 log4j.appender.logfile.layout=org.apache.log4j.PatternLayout
 log4j.appender.logfile.layout.ConversionPattern=%d{yyyy-MM-dd HH\:mm\:ss,SSS} [%-5p][%t] method\:%l%n %m%n

mybatis-config.xml文件内容：

 <?xml version="1.0" encoding="UTF-8" ?>
 <!DOCTYPE configuration
   PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
   "http://mybatis.org/dtd/mybatis-3-config.dtd">
 <configuration>
    <settings>
         <setting name="cacheEnabled" value="true" />
         <setting name="lazyLoadingEnabled" value="true" />
         <setting name="multipleResultSetsEnabled" value="true" />
         <setting name="useColumnLabel" value="true" />
         <setting name="useGeneratedKeys" value="false" />
         <setting name="autoMappingBehavior" value="PARTIAL" />
         <setting name="defaultExecutorType" value="SIMPLE" />
         <setting name="defaultStatementTimeout" value="25" />
         <setting name="safeRowBoundsEnabled" value="false" />
         <setting name="mapUnderscoreToCamelCase" value="false" />
         <setting name="localCacheScope" value="SESSION" />
         <setting name="jdbcTypeForNull" value="OTHER" />
         <setting name="logImpl" value="LOG4J"/>
         <setting name="lazyLoadTriggerMethods" value="equals,clone,hashCode,toString" />
     </settings>
 </configuration>

applicationContext.xml添加内容：

     <!-- 创建SqlSessionFactory，并指定数据源 -->
     <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
         <!-- 自动扫描mapping.xml文件，不需要mybatis的配置映射文件,扫描所有mapper文件,configLocation为mybatis属性,mapperLocations为所有mapper -->
             <property name="mapperLocations">
                 <list>
                     <!-- 表示在包或以下所有目录中，以-mapper.xml结尾所有文件 -->
                     <value>classpath:com/test/mappers/*-mapper.xml</value>
                 </list>
             </property>
         <property name="dataSource" ref="dataSource" />
         <property name="configLocation" value="classpath:config/mybatis-config.xml" />
         <property name="typeAliasesPackage" value="com.test.model" />
     </bean>