myibatis--学习点滴

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=======================打印sql log4j配置=====================

# Rules reminder: # DEBUG < INFO < WARN < ERROR < FATAL # Global logging configuration # My logging configuration... log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.Target=System.outlog4j.appender.stdout.layout=org.apache.log4j.PatternLayout #log4j.appender.stdout.layout.ConversionPattern=%5p %d %C: %m%n log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n#mybatis logger config log4j.logger.com.ibatis=DEBUGlog4j.logger.com.ibatis.common.jdbc.SimpleDataSource=infolog4j.logger.org.apache.ibatis.jdbc.ScriptRunner=infolog4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapClientDelegate=infolog4j.logger.java.sql.ResultSet=infolog4j.logger.java.sql.Connection=infolog4j.logger.java.sql.Statement=infolog4j.logger.java.sql.PreparedStatement=infolog4j.rootLogger=DEBUG,stdout

jar包如下：

log4j-1.2.17.jar
mybatis-3.2.3.jar
mysql-connector-java-5.0.4-bin.jar

===========================打印sql log4j配置结束=======================

hibernate和myibatis3在代码上的区别：

hibernate的UserDao必须实现UserDaoImpl，然后写java代码。

myIbatis是面向接口编程的不需要实现UserDaoImpl，只需配置mapper.xml文件中相应的sql即可。

但是需要在spring的配置文件中加入：

<!-- scan for mappers and let them be autowired -->      <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">          <property name="basePackage" value="com.mybatis.dao" />      </bean>

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