Spring的AOP注释实例（aspect的使用）

-----------------------------------接口------------------------------------

package common;

import domain.UserBean;

public interface IUser {
 public void addUser(UserBean user);
 public String findUserById(int stuId);
}
----------------------------------实现类------------------------------------

package common;

import domain.UserBean;

public class UserImpl implements IUser {

 public void addUser(UserBean user) {
  System.out.println("-----------add User------------");
 }
 public String findUserById(int stuId) {
  System.out.println("-----------find User------------");
  return "Jeson";
 }
}

 

-------------------------------安全验证类----------------------------------

package dynamicProxy;

import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;

@Aspect
public class SecurityHandler{

 @Pointcut("execution(* common.UserImpl.add*(..))")        //exection中的 第一个*号表示匹配所有返回类型 后面的..表示匹配所有参数
 private void addAllMethod(){}
 
 @Before("addAllMethod()") 
 public void checkSecurity()
 {
  System.out.println("----------security checking---------------");
 }
}

-----------------------------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:aop="http://www.springframework.org/schema/aop"
      xmlns:tx="http://www.springframework.org/schema/tx"
      xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">
 <aop:aspectj-autoproxy/>                                          //这句话是必须加上的
 <bean id="userIm" class="common.UserImpl"/>
 <bean id="secu" class="dynamicProxy.SecurityHandler"/>        
</beans>

 

----------------------------------执行-----------------------------------

package action;

import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import common.IUser;
import common.UserImpl;

import domain.UserBean;
import dynamicProxy.SecurityHandler;

public class DynamicProxyAction {

 /**
  * @param args
  */
 public static void main(String[] args) {
  BeanFactory factory = new ClassPathXmlApplicationContext("applicationContext.xml");
  IUser user = (IUser)factory.getBean("userIm");
  user.findUserById(1);
 }

}

 

-------------------------------------------------------输出-------------------------------------

log4j 消息省略

----------security checking---------------
-----------add User------------