spring 中的BeanNameAutoProxyCreator (转）

spring 中的BeanNameAutoProxyCreator 

2012-01-07 20:38:41|  分类： spring |字号 订阅
BeanNameAutoProxyCreator 只需指定bean的名称，以及被通知bean的名称，指定名称时可以使用通配符。

自动代理它们。

例子：

package com.itcst.info.autoproxy;

public class AutoBean {
public void foo()
{
System.out.println("hello xiaoming");
}
}



----拦截器advisce

package com.itcst.info.pointcut;

import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;

public class SimpleAdvice implements MethodInterceptor {

@Override
public Object invoke(MethodInvocation invokes) throws Throwable {
  // TODO Auto-generated method stub
  System.out.println("提前了");
  return invokes.proceed();
}

}



3.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"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd"
default-autowire="no" default-lazy-init="false">
 
   <bean id="proxyCreator" class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
   <property name="beanNames">
   <list>
   <value>foo*</value>---表达式foo开头
   <value>barBean</value>
   </list>
   </property>
  
   <property name="interceptorNames">
   <list><value>advice</value></list>
   </property>
   </bean>
  
   <bean id="foobean" class="com.itcst.info.autoproxy.AutoBean"></bean>
   <bean id="barbean" class="com.itcst.info.autoproxy.AutoBean"></bean>
   <bean id="advice" class="com.itcst.info.pointcut.SimpleAdvice"></bean>
  
  </beans>



客户端

package com.itcst.info.autoproxy;

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

public class AutoproxyTest {

/**
  * @param args
  */
public static void main(String[] args) {
  // TODO Auto-generated method stub
ApplicationContext ctx=new ClassPathXmlApplicationContext("conf/spring/beans.xml");
AutoBean bean1=(AutoBean)ctx.getBean("foobean");
AutoBean bean2=(AutoBean)ctx.getBean("barbean");
bean1.foo();
bean2.foo();
}

}