老翟

AOP类package cc.apl330.aspect;

public class UserAspect {
	public void before() {
		System.out.println("method before!");
	}
}

数据库操作package cc.apl330.dao;

import cc.apl330.model.User;

public interface IDAO {
	public void save(User user) ;
}

数据库操作package cc.apl330.dao;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;

import javax.sql.DataSource;

import cc.apl330.model.User;

public class UserDAO implements IDAO {

	private DataSource dataSource ;
	
	public void save(User user) {
		int id = user.getId(); 
		String name = user.getName() ;
		String sql = "INSERT INTO USER(_id,_name) VALUE(?,?)" ;
		Connection conn = null ;
		PreparedStatement ps = null ;
		try {
			conn = dataSource.getConnection() ;
			ps = conn.prepareStatement(sql) ;
			ps.setInt(1, id) ;
			ps.setString(2, name) ;
			ps.executeUpdate() ;
		} catch (SQLException e) {
			e.printStackTrace();
		}finally{
			try {
				ps.close() ;
				conn.close() ;
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
	}

	public DataSource getDataSource() {
		return dataSource;
	}

	public void setDataSource(DataSource dataSource) {
		this.dataSource = dataSource;
	}
	
}

业务层package cc.apl330.service;

import cc.apl330.dao.IDAO;
import cc.apl330.dao.UserDAO;
import cc.apl330.model.User;

public class UserService {
	private UserDAO userdao = null ;

	public void add(User user) {
		userdao.save(user) ;
	}
	
	public UserDAO getUserdao() {
		return userdao;
	}

	public void setUserdao(UserDAO userdao) {
		this.userdao = userdao;
	}
	
}

测试类package cc.apl330.service;

import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import cc.apl330.model.User;


public class UserServiceTest {
	@Test
	public void save() {
		ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml") ;
		UserService userService = (UserService) ctx.getBean("userService");
		User user = new User() ;
		user.setName("apl330") ;
		userService.add(user);
	}
}

sping配置文件<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
           http://www.springframework.org/schema/context
           http://www.springframework.org/schema/context/spring-context-2.5.xsd
           http://www.springframework.org/schema/aop
           http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">
       <bean id="dao" class="cc.apl330.dao.UserDAO"  >
       			<property name="dataSource" ref="dataSource"></property>
       </bean>
       <bean id="user" class="cc.apl330.model.User" scope="prototype"></bean>
	  <bean id="userService" class="cc.apl330.service.UserService">
	  		<property name="userdao" ref="dao"></property>
	  </bean>
	  <bean id="addbefore" class="cc.apl330.aspect.UserAspect"></bean>
	  <aop:config>
	  	<aop:pointcut 
				  	expression="execution(public * cc.apl330.service.*.add(..))" 
				  	id="userpoincut"/>
			<aop:aspect id="useraspect" ref="addbefore" >
			<aop:before method="before" pointcut-ref="userpoincut"/>
		</aop:aspect>
	  </aop:config>
	  
	  <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
	  	<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
	  	<property name="url" value="jdbc:mysql://localhost:3306/spring"></property>
	  	<property name="username" value="root"></property>
	  	<property name="password" value="359848184"></property>
	  </bean>	  
</beans>