public interface StudentDao {
    public void find();

    public void save();

    public void update();

    public void delete();
}

public class StudentDaoImpl implements  StudentDao {
    public void find() {
        System.out.println("学生查询...");
    }

    public void save() {
        System.out.println("学生保存...");
    }

    public void update() {
        System.out.println("学生修改...");
    }

    public void delete() {
        System.out.println("学生删除...");
    }
}

public class MyBeforeAdvice implements MethodBeforeAdvice {
    public void before(Method method, Object[] args, Object target) throws Throwable {
        System.out.println("前置增强======================");
    }
}

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

    <!--配置目标类=======================-->
    <bean id="studentDao" class="com.imooc.aop.demo3.StudentDaoImpl"/>

    <!--前置通知类型=====================-->
    <bean id="myBeforeAdvice" class="com.imooc.aop.demo3.MyBeforeAdvice"/>

    <!--Spring的AOP 产生代理对象-->
    <bean id="studentDaoProxy" class="org.springframework.aop.framework.ProxyFactoryBean">
        <!--配置目标类-->
        <property name="target" ref="studentDao"/>
        <!--实现的接口-->
        <property name="proxyInterfaces" value="com.imooc.aop.demo3.StudentDao"/>
        <!--采用拦截的名称-->
        <property name="interceptorNames" value="myBeforeAdvice"/>
        <property name="optimize" value="true"></property>
    </bean>
</beans>

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext.xml")
public class SpringDemo3 {

    // @Resource(name="studentDao")
    @Resource(name="studentDaoProxy")
    private StudentDao studentDao;

    @Test
    public void demo1(){
        studentDao.find();
        studentDao.save();
        studentDao.update();
        studentDao.delete();
    }
}