spring与mybatis四种整合方法

 

（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" 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="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"     class="org.mybatis.spring.SqlSessionTemplate">
      <constructor-arg index="0" ref="sqlSessionFactory" />
</bean>

<bean id="UserDaoImpl " class="com.xxt.ibatis.dbcp.dao.impl.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" class="org.mybatis.spring.SqlSessionFactoryBean">
   <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"     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>

 (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" class="org.mybatis.spring.SqlSessionFactoryBean">
        <beans:property name="dataSource" ref="simpleDataSource" />
        <beans:property name="configLocation"
            value="classpath:conf/core/mybatis-config.xml" />
    </beans:bean>

    <beans:bean id="sqlSessionFactory_contact" class="org.mybatis.spring.SqlSessionFactoryBean">
        <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"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <beans:property name="dataSource" ref="simpleDataSource" />
    </beans:bean>

    <beans:bean id="transactionManager_contact"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <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" class="org.mybatis.spring.mapper.MapperFactoryBean">
        <property name="mapperInterface" value="com.mybatis.UserDao"></property>
        <property name="sqlSessionFactory" ref="sqlSessionFactory"></property>
    </bean>

    <bean id="userService" class="com.mybatis.UserServiceImpl">
        <property name="userDao" ref="userDao"></property>
    </bean>

    <!-- 加载配置文件 -->
    <beans:bean name="mapperScannerConfigurer"
        class="org.mybatis.spring.mapper.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"
        class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <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>