Spring对方式生成代理---前置、后置增强

一、前置增强

beans.xml(使用JDK代理)

<?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:p="http://www.springframework.org/schema/p" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> <!-- 增强类--> <bean id="greetingAdvice" class="com.testApi.beforeAdvice.GreetingBeforeAdvice"/> <bean id="target2" class="com.testApi.beforeAdvice.SuperWaiter"/> <bean id="waiter" class="org.springframework.aop.framework.ProxyFactoryBean" p:proxyInterfaces="com.testApi.beforeAdvice.Waiter" p:interceptorNames="greetingAdvice" p:target-ref="target2"/> </beans> <!-- proxyInterfaces指明代理要实现对接口 target2 是要代理对目标类 interceptorNames 是需要植入目标对象的Bean列表，必须是实现类MethodInterceptor或者Advisor的类 optimize 为true时强制实行CGLIB代理 proxyTargetClass 是否对类进行代理,boolean类型 -->

beans.xml(使用CGLIB代理)

<?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:p="http://www.springframework.org/schema/p" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> <!-- 增强类--> <bean id="greetingAdvice" class="com.testApi.beforeAdvice.GreetingBeforeAdvice"/> <bean id="target2" class="com.testApi.beforeAdvice.SuperWaiter"/> <bean id="waiter" class="org.springframework.aop.framework.ProxyFactoryBean" p:interceptorNames="greetingAdvice" p:target-ref="target2" p:proxyTargetClass="true"/> </beans> <!-- proxyInterfaces指明代理要实现对接口 target2 是要代理对目标类 interceptorNames 是需要植入目标对象的Bean列表，必须是实现类MethodInterceptor或者Advisor的类 optimize 为true时强制实行CGLIB代理 proxyTargetClass 是否对类进行代理,boolean类型 -->

 

一节接口需要多个增强对写法：

p:interceptorNames="aAdvice,bAdvice,cAdvice"

 

测试类：

@Test public void test3(){ String path= "beans.xml"; ClassPathXmlApplicationContext context=new ClassPathXmlApplicationContext(path); Waiter waiter=(Waiter)context.getBean("waiter"); waiter.greetingTo("hehe"); waiter.serveTo("liming"); }

二、后置增强

<?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:p="http://www.springframework.org/schema/p" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> <!-- 增强类--> <bean id="greetingAdvice" class="com.testApi.beforeAdvice.GreetingBeforeAdvice"/> <bean id="afterAdvice" class="com.testApi.beforeAdvice.GreetingAfterAdvice"/> <bean id="target2" class="com.testApi.beforeAdvice.SuperWaiter"/> <bean id="waiter" class="org.springframework.aop.framework.ProxyFactoryBean" p:interceptorNames="greetingAdvice,afterAdvice" p:target-ref="target2" p:proxyTargetClass="true"/> </beans> <!-- proxyInterfaces指明代理要实现对接口 target2 是要代理对目标类 interceptorNames 是需要植入目标对象的Bean列表，必须是实现类MethodInterceptor或者Advisor的类 optimize 为true时强制实行CGLIB代理 proxyTargetClass 是否对类进行代理,boolean类型 -->