一、

UserDAO.java:

package com.cy.dao;import com.cy.model.User;public interface UserDAO {    public void save(User user);}

实现UserDAOImpl.java:

package com.cy.dao.impl;import org.springframework.stereotype.Component;import com.cy.dao.UserDAO;import com.cy.model.User;@Componentpublic class UserDAOImpl implements UserDAO {    public void save(User user) {        //Hibernate        //JDBC        //XML        //NetWork        System.out.println("user saved!");    }}

切面类LogInterceptor.java:

package com.cy.aop;public class LogInterceptor {        public void before() {        System.out.println("method before");    }    }

UserService.java:

package com.cy.service;import javax.annotation.Resource;import org.springframework.stereotype.Component;import com.cy.dao.UserDAO;import com.cy.model.User;@Component("userService")public class UserService {        @Resource    private UserDAO userDAO;          public void init() {        System.out.println("init");    }        public void add(User user) {        userDAO.save(user);    }            public UserDAO getUserDAO() {        return userDAO;    }        public void setUserDAO( UserDAO userDAO) {        this.userDAO = userDAO;    }        public void destroy() {        System.out.println("destroy");    }}

配置文件beans.xml:

测试代码：

UserServiceTest.java:

package com.cy.service;import org.junit.Test;import org.springframework.context.support.ClassPathXmlApplicationContext;import com.cy.model.User;public class UserServiceTest {        @Test    public void testAdd() throws Exception {        ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml");        UserService service = (UserService)ctx.getBean("userService");        System.out.println(service.getClass());        service.add(new User());        ctx.destroy();    }}

console:

 

二、第2个例子：

pointcut可以直接定义在aop:before/aop:after等这些advice里面：

beans.xml:

console同样的运行效果；

 

三、aop：advisor这个放在声明式事务管理中写；

 

总结：