Spring-AOP實例

                 需求類：

                               PersonDao類：接口

                               PersonDaoImpl類：實現類

                               Transaction類：事務類

                               TransactionTest類：測試類

                               applicationContext.xml：配置文件

 PersonDao：

package com.tgb.spring.aop.xml.transaction;

public interface PersonDao {
  public void savePerson();
}

PersonDaoImpl：

package com.tgb.spring.aop.xml.transaction;

public class PersonDaoImpl implements PersonDao {

	public void savePerson() {
		System.out.println("執行： save person 方法！");
	}

}

Transaction：

package com.tgb.spring.aop.xml.transaction;

import java.lang.reflect.Method;

import org.junit.Test;

/**
 * 
 * @author F-mdh
 *
 */
//切面
public class Transaction {
   public void  beginTransaction(){
	   System.out.println("執行：開啓事務！");
	   
   };
   public void  commitTransaction(){
	   System.out.println("執行：提交事務！");
	   
   };

   
}

TransactionTest：

package com.tgb.spring.aop.xml.transaction;

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

public class TransactionTest {

	@Test
	public void testTransaction(){                                   //applicationContext.xml
		ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext.xml");
			
	PersonDao personDao=(PersonDao)context.getBean("personDao");
	personDao.savePerson();
		
	};
}

applicationContext.xml：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	   xmlns:aop="http://www.springframework.org/schema/aop"
       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-2.5.xsd
           http://www.springframework.org/schema/aop 
           http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">
  	<bean id="personDao" class="com.tgb.spring.aop.xml.transaction.PersonDaoImpl"></bean>
  	<bean id="transaction" class="com.tgb.spring.aop.xml.transaction.Transaction"></bean>
  	
  	<aop:config>
  		<!-- 
  			切入點表達式  確定目標類
  		 -->
  		<aop:pointcut 
  			expression="execution(* com.tgb.spring.aop.xml.transaction.PersonDaoImpl.*(..))" 
  			id="perform"/>
  		<!-- 
  			ref指向的對象就是切面
  		 -->
  	    <aop:aspect ref="transaction">
  	    	<aop:before method="beginTransaction" pointcut-ref="perform"/>
  	    	<aop:after-returning method="commitTransaction" pointcut-ref="perform"/>
  	    </aop:aspect>
  	</aop:config>
</beans>