<?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/beanshttp://www.springframework.org/schema/beans/spring-beans-2.5.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-2.5.xsdhttp://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop-2.5.xsd"><context:annotation-config /><context:component-scan base-package="com.bjsxt"/><bean id="logInterceptor" class="com.bjsxt.aop.LogInterceptor"></bean><aop:config>       <aop:aspect id="logAspect" ref="logInterceptor"><aop:before method="before" pointcut="execution(public * com.bjsxt.service..*.add(..))" /></aop:aspect></aop:config>
</beans>

package com.bjsxt.aop;import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.stereotype.Component;//@Aspect
//@Component
public class LogInterceptor {//@Pointcut("execution(public * com.bjsxt.service..*.add(..))")public void myMethod(){};//@Before("myMethod()")public void before() {System.out.println("method before");}//@Around("myMethod()")public void aroundMethod(ProceedingJoinPoint pjp) throws Throwable {System.out.println("method around start");pjp.proceed();System.out.println("method around end");}}

package com.bjsxt.service;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;import com.bjsxt.model.User;//Dependency Injection
//Inverse of Control
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();}
}

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

package com.bjsxt.dao.impl;import org.springframework.stereotype.Component;import com.bjsxt.dao.UserDAO;
import com.bjsxt.model.User;@Component("u")
public class UserDAOImpl implements UserDAO {public void save(User user) {//Hibernate//JDBC//XML//NetWorkSystem.out.println("user saved!");//throw new RuntimeException("exeption!");}}

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

package com.bjsxt.model;public class User {private String username;private String password;public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}
}