java spring与mybatis四种整合方法

 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” destroy-method=”close”>
<property name=”driverClassName” value=”${driver}”/>
<property name=”url” value=”${url}”/>
<property name=”username” value=”${username}”/>
<property name=”password” value=”${password}”/>
<property name=”initialSize” value=”${initialSize}”/>
<property name=”maxActive” value=”${maxActive}”/>
<property name=”maxIdle” value=”${maxIdle}”/>
<property name=”minIdle” value=”${minIdle}”/>
</bean>

<!– 创建SqlSessionFactory,同时指定数据源–>
<bean id=”sqlSessionFactory”>
<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”>
<property name=”mapperInterface” value=”com.xxt.ibatis.dbcp.dao.UserMapper” />
<property name=”sqlSessionFactory” ref=”sqlSessionFactory” />
</bean>

<bean id=”userDaoImpl2″>
<property name=”userMapper” ref=”userMapper”/>
</bean>

(2)数据映射器UserMapper,代码如下:
  public interface UserMapper {
@Select(“SELECT * FROM user WHERE id = #{userId}”)
User getUser(@Param(“userId”) long id);
}
 (3) dao接口类UserDao,代码如下:
   public interface UserDao {
public User getUserById(User user);
}
(4)dao实现类UserDaoImpl2,,代码如下:

  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());
}
}

 

 2、采用接口org.apache.ibatis.session.SqlSession的实现类org.mybatis.spring.SqlSessionTemplate
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:
    <!– 创建SqlSessionFactory,同时指定数据源–>
<bean id=”sqlSessionFactory”>
<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=”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=”classpath*:com/xxt/ibatis/dbcp/**/*.xml”/>  –>
</bean>
<bean id=”sqlSession”    >
<constructor-arg index=”0″ ref=”sqlSessionFactory” />
</bean><bean id=”UserDaoImpl “>
<!–注入SqlSessionTemplate实例 –>
<property name=”sqlSessionTemplate” ref=”sqlSession” />
–>
</bean>

    (2)mybatis总配置文件sqlMapConfig.xml:
  <configuration>
<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>
(3)实体类映射文件user.map.xml:
<mapper namespace=”com.xxt.ibatis.dbcp.domain.User”>
<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/>
(4)dao层接口实现类UserDaoImpl:
  public class UserDaoImpl implements  UserDao  {
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;
}
}
 3、采用抽象类org.mybatis.spring.support.SqlSessionDaoSupport提供SqlSession。
(1)spring配置文件:

<bean id=”sqlSessionFactory”>
<property name=”dataSource” ref=”dataSource” />
<property  name=”configLocation”  value=”classpath:sqlMapConfig.xml”/>
<!– <property  name=”mapperLocations”  value=”classpath*:com/xxt/ibatis/dbcp/domain/user.map.xml”/   >  –>
</bean>

<bean id=”sqlSession”    >
<constructor-arg index=”0″ ref=”sqlSessionFactory” />
</bean>

<bean id=”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>

(2) dao层接口实现类UserDaoImpl3:
public class UserDaoImpl3 extends SqlSessionDaoSupport implements UserDao {
public User getUserById(User user) {
return (User) getSqlSession().selectOne(“com.xxt.ibatis.dbcp.domain.User.getUser”, user);
}
}

 3、采用org.mybatis.spring.mapper.MapperFactoryBean或者org.mybatis.spring.mapper.MapperScannerConfigurer
<beans:bean id=”sqlSessionFactory”>
<beans:property name=”dataSource” ref=”simpleDataSource” />
<beans:property name=”configLocation”
value=”classpath:conf/core/mybatis-config.xml” />
</beans:bean>

<beans:bean id=”sqlSessionFactory_contact”>
<beans:property name=”dataSource” ref=”simpleDataSource_contact” />
<beans:property name=”configLocation”
value=”classpath:conf/core/mybatis-config-contact.xml” />
</beans:bean>

<beans:bean id=”transactionManager”
>
<beans:property name=”dataSource” ref=”simpleDataSource” />
</beans:bean>

<beans:bean id=”transactionManager_contact”
>
<beans:property name=”dataSource” ref=”simpleDataSource_contact” />
</beans:bean>

<!–  <tx:annotation-driven transaction-manager=”transactionManager” />
<tx:annotation-driven transaction-manager=”transactionManager_contact” />
–>

<bean id=”userDao”>
<property name=”mapperInterface” value=”com.mybatis.UserDao”></property>
<property name=”sqlSessionFactory” ref=”sqlSessionFactory”></property>
</bean>

<bean id=”userService”>
<property name=”userDao” ref=”userDao”></property>
</bean>

<!– 加载配置文件 –>
<beans:bean name=”mapperScannerConfigurer”
>
<beans:property name=”basePackage” value=”com.elong.hotel.crm.data.mapper” />
<beans:property name=”sqlSessionFactoryBeanName” value=”sqlSessionFactory”></beans:property>
</beans:bean>
<beans:bean name=”mapperScannerConfigurer_contact”
>
<beans:property name=”basePackage”
value=”com.elong.hotel.crm.data.contact.mapper” />
<beans:property name=”sqlSessionFactoryBeanName” value=”sqlSessionFactory_contact”></beans:property>
</beans:bean>

<tx:advice id=”txAdvice” transaction-manager=”transactionManager”>
<tx:attributes>
<!– name表示以什么开始的方法名,比如 add*表示add开头的方法 propagation表示事务传播属性,不写默认有 –>
<tx:method name=”save*” propagation=”REQUIRED” />
<tx:method name=”insert*” propagation=”REQUIRED” />
<tx:method name=”add*” propagation=”REQUIRED” />
<tx:method name=”del*” />
<tx:method name=”update*” />
<tx:method name=”find*” read-only=”true” />
<tx:method name=”get*” read-only=”true” />
<tx:method name=”search*” read-only=”true” />
</tx:attributes>
</tx:advice>

<tx:advice id=”txAdvice_contact” transaction-manager=”transactionManager_contact”>
<tx:attributes>
<!– name表示以什么开始的方法名,比如 add*表示add开头的方法 propagation表示事务传播属性,不写默认有 –>
<tx:method name=”save*” propagation=”REQUIRED” />
<tx:method name=”insert*” propagation=”REQUIRED” />
<tx:method name=”add*” propagation=”REQUIRED” />
<tx:method name=”del*” />
<tx:method name=”update*” />
<tx:method name=”find*” read-only=”true” />
<tx:method name=”get*” read-only=”true” />
<tx:method name=”search*” read-only=”true” />
</tx:attributes>
</tx:advice>
<!– 配置事务切面 –>
<aop:config>
<aop:pointcut expression=”execution(* com.elong.hotel.crm.service..*.*(..))”
id=”pointcut” />
<aop:advisor advice-ref=”txAdvice” pointcut-ref=”pointcut” />
<aop:advisor advice-ref=”txAdvice_contact” pointcut-ref=”pointcut” />
</aop:config>

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