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spring与mybatis三种整合方法
spring与mybatis三种整合方法
本文主要介绍Spring与Mybatis三种常用整合方法,需要的整合架包是mybatis-spring.jar,可通过链接
http://code.google.com/p/mybatis/下载到。
1、采用数据映射器(MapperFactoryBean)的方式,不用写mybatis映射文件,采用注解方式提供相应的sql语句和输入参数。
(1)Spring配置文件:
<!-- 引入jdbc配置文件 -->
<context:property-placeholder location="jdbc.properties"/>
<!--创建jdbc数据源 -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="http://www.mamicode.com/${driver}"/>
<property name="url" value="http://www.mamicode.com/${url}"/>
<property name="username" value="http://www.mamicode.com/${username}"/>
<property name="password" value="http://www.mamicode.com/${password}"/>
<property name="initialSize" value="http://www.mamicode.com/${initialSize}"/>
<property name="maxActive" value="http://www.mamicode.com/${maxActive}"/>
<property name="maxIdle" value="http://www.mamicode.com/${maxIdle}"/>
<property name="minIdle" value="http://www.mamicode.com/${minIdle}"/>
</bean>
<!-- 创建SqlSessionFactory,同时指定数据源-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
</bean>
<!--创建数据映射器,数据映射器必须为接口-->
<bean id="userMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">
<property name="mapperInterface" value="http://www.mamicode.com/com.xxt.ibatis.dbcp.dao.UserMapper" />
<property name="sqlSessionFactory" ref="sqlSessionFactory" />
</bean>
<bean id="userDaoImpl2" class="com.xxt.ibatis.dbcp.dao.impl.UserDaoImpl2">
<property name="userMapper" ref="userMapper"/>
</bean>
@Select("SELECT * FROM user WHERE id = #{userId}")
User getUser(@Param("userId") long id);
}
public User getUserById(User user);
}
public class UserDaoImpl2 implements UserDao {
private UserMapper userMapper;
public void setUserMapper(UserMapper userMapper) {
this.userMapper = userMapper;
}
public User getUserById(User user) {
return userMapper.getUser(user.getId());
}
}
mybatis中, sessionFactory可由SqlSessionFactoryBuilder.来创建。MyBatis-Spring 中,使用了SqlSessionFactoryBean来替代。SqlSessionFactoryBean有一个必须属性dataSource,另外其还有一个通用属性configLocation(用来指定mybatis的xml配置文件路径)。
(1)Spring配置文件:
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<!-- 指定sqlMapConfig总配置文件,订制的environment在spring容器中不在生效-->
<property name="configLocation" value="http://www.mamicode.com/classpath:sqlMapConfig.xml"/>
<!--指定实体类映射文件,可以指定同时指定某一包以及子包下面的所有配置文件,mapperLocations和configLocation有一个即可,当需要为实体类指定别名时,可指定configLocation属性,再在mybatis总配置文件中采用mapper引入实体类映射文件 -->
<!- - <property name="mapperLocations" value="http://www.mamicode.com/classpath*:com/xxt/ibatis/dbcp/**/*.xml"/> -->
</bean>
<typeAliases>
<typeAlias type="com.xxt.ibatis.dbcp.domain.User" alias="User" />
</typeAliases>
<mappers>
<mapper resource="com/xxt/ibatis/dbcp/domain/user.map.xml" />
</mappers>
</configuration>
<resultMap type="User" id="userMap">
<id property="id" column="id" />
<result property="name" column="name" />
<result property="password" column="password" />
<result property="createTime" column="createtime" />
</resultMap>
<select id="getUser" parameterType="User" resultMap="userMap">
select * from user where id = #{id}
</select>
<mapper/>
public SqlSessionTemplate sqlSession;
public User getUserById(User user) {
return (User)sqlSession.selectOne("com.xxt.ibatis.dbcp.domain.User.getUser", user);
}
public void setSqlSession(SqlSessionTemplate sqlSession) {
this.sqlSession = sqlSession;
}
}
(1)spring配置文件:
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="configLocation" value="http://www.mamicode.com/classpath:sqlMapConfig.xml"/>
<!-- <property name="mapperLocations" value="http://www.mamicode.com/classpath*:com/xxt/ibatis/dbcp/domain/user.map.xml"/ > -->
</bean>
<bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
<constructor-arg index="0" ref="sqlSessionFactory" />
</bean>
<bean id="userDaoImpl3" class="com.xxt.ibatis.dbcp.dao.impl.UserDaoImpl3">
<!--注入SqlSessionTemplate实例 -->
<property name="sqlSessionTemplate" ref="sqlSession" />
<!--也可直接注入SqlSessionFactory实例,二者都指定时,SqlSessionFactory失效 -->
<!-- <property name="sqlSessionFactory" ref="sqlSessionFactory" />
-->
</bean>
public class UserDaoImpl3 extends SqlSessionDaoSupport implements UserDao {
public User getUserById(User user) {
return (User) getSqlSession().selectOne("com.xxt.ibatis.dbcp.domain.User.getUser", user);
}
}
spring与mybatis三种整合方法