<!-- 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="${driver}"/>    
 <property name="url" value="${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" 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="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> 

public interface UserMapper {   
  @Select("SELECT * FROM user WHERE id = #{userId}")    
 User getUser(@Param("userId") long id);  
 } 

public interface UserDao {  
  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());   
  } 
 } 

<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> 

<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/> 

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;   } 
 } 

<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> 

public class UserDaoImpl3 extends SqlSessionDaoSupport implements UserDao { 
  public User getUserById(User user) {   
  return (User) getSqlSession().selectOne("com.xxt.ibatis.dbcp.domain.User.getUser", user);   
} 
 }