参考:http://blog.chinaunix.net/uid-26244834-id-3268354.html
在Mybatis的源码中发现Configuration类,是mybatis的配置中心:
public class Configuration { protected Environment environment; protected boolean safeRowBoundsEnabled = true; protected boolean mapUnderscoreToCamelCase = false; protected boolean lazyLoadingEnabled = false;
其中属性mapUnderscoreToCamelCase表示是否启用下划线与驼峰式命名规则的映射(如first_name => firstName)。其实mybatis是支持数据库属性和实体对象的驼峰命名映射,只需要开启这个配置即可。
使用方法:
mybatis和spring结合使用时(java web工程),配置:
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="mapperLocations" value="classpath:sqlMapper/*" /> <property name="dataSource" ref="dataSource" /> <property name="configLocation" value="classpath:mybatis-config.xml"></property> </bean> mybatis-config.xml: <configuration> <settings> <setting name="mapUnderscoreToCamelCase" value="true" /> </settings> </configuration>
mybatis单独使用时(java project工程),配置如下:
Configuration configuration = new Configuration(environment); configuration.setLazyLoadingEnabled(true); // 启用下划线与驼峰式命名规则的映射(如first_name => firstName) configuration.setMapUnderscoreToCamelCase(true);