package cn.my.sm.mapper;

/**

 * 将公用方法提取出来

 * @author Administrator

 *

 * @param <T>

 */

public interface BaseDaoMapper<T> {

    public T findById(int id);

}

package cn.my.sm.mapper;

import cn.my.sm.po.User;

public interface UserDaoMapper extends BaseDaoMapper<User>  {

}

<!-- 映射一个org.mybatis.spring.mapper.MapperFactoryBean动态代理的类即可

            装载一个cn.my.sm.mapper.UserDaoMapper类

         -->

        <bean id="userMapper" class="org.mybatis.spring.mapper.MapperFactoryBean" >

            <property name="mapperInterface" value="cn.my.sm.mapper.UserDaoMapper"></property>

            <property name="sqlSessionFactory" ref="sqlSessionFactory"></property>

        </bean>

    @Test

    public void testFindById1(){

        UserDaoMapper userdao = (UserDaoMapper) context.getBean("userMapper");

        User user = userdao.findById(1);

        System.out.println(user);

    }