spring aop 之配置方式

 1.目标类及方法：

 

package com.proxy2;

public class UserManagerImpl implements UserManager {

 @Override
 public void addUser() {
  // TODO Auto-generated method stub
  System.out.println("***addUser***");
 }
 @Override
 public void delUser() {
  // TODO Auto-generated method stub
  System.out.println("****delUser***");
 }
}

2。需要插入的代码；

public class SecurityHandler   {
 
 public void beforeSecurity(){
  System.out.println("*****checkSecurity before******");
 }
 
 public void afterSecurity(){
  System.out.println("*****checkSecurity after******");
 }
}

3。spring配置文件配置如下：

<?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/beanshttp://www.springframework.org/schema/beans/spring-beans-2.0.xsd
           http://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop-2.0.xsd
           http://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-2.0.xsd">
 
 <aop:config>
  <aop:aspect id="secAspect" ref="sec">
   <aop:pointcut id="addAddMethod" expression="execution(* add*(..))"/>   <!--定义执行addUser等方法时候触发-->
   <aop:before method="beforeSecurity" pointcut-ref="addAddMethod"/>   
   <aop:after method="afterSecurity" pointcut-ref="addAddMethod"/>
  </aop:aspect> 
 </aop:config>
 
 <bean id="userManager" class="com.proxy2.UserManagerImpl"/>
 
 <bean id="sec" class="com.proxy2.SecurityHandler"/>
</beans>

 4。[补充] aop支持带参数形式(在advice获得参数名称，方法名称等等)：

  修改如下 public void addUser(String name,String age) {
  // TODO Auto-generated method stub
  System.out.println("***addUser***");
 }

 

public void beforeSecurity(JoinPoint joinPoint){
  for(int i=0;i<joinPoint.getArgs().length;i++){
   System.out.println(joinPoint.getArgs()[i]);   ---打印参数名称
  }
  System.out.println(joinPoint.getSignature().getName());  --打印方法名称
  System.out.println("*****checkSecurity before******");
 }