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Spring @Aspect切面参数传递
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Spring @Aspect切面参数传递
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Spring @Aspect切面參數(shù)傳遞:
Xml:
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.springframework.org/schema/beans" xmlns:p="http://www.springframework.org/schema/p"xmlns:util="http://www.springframework.org/schema/util" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop"xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.1.xsdhttp://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsdhttp://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.1.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd"><!-- 這個(gè)聲明會(huì)創(chuàng)建AnnotationAwareAspectJAutoProxyCreator,進(jìn)行切面Bean的代理 --><aop:aspectj-autoproxy /><!-- 必須將切面類(lèi)聲明為一個(gè)Bean --><bean id="magician" class="com.stono.sprtest3.Magician"></bean><bean id="volunteer" class="com.stono.sprtest3.Volunteer"></bean> </beans>?
AppBean:
package com.stono.sprtest3; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class AppBeans12 {public static void main(String[] args) {@SuppressWarnings("resource")ApplicationContext context = new ClassPathXmlApplicationContext("appbeans12.xml");// 在AOP情況下,如果有接口就必須用接口來(lái)接,否則會(huì)報(bào)ClassCastException;Thinker bean = (Thinker) context.getBean("volunteer");bean.thinkOfSomething("volunteer think of something");MindReader bean2 = (MindReader) context.getBean("magician");String thoughts = bean2.getThoughts();System.out.println(thoughts);} }?
切面:
package com.stono.sprtest3; public interface MindReader {void interceptThoughts(String thoughts);String getThoughts(); } package com.stono.sprtest3; import org.aspectj.lang.annotation.Aspect; import org.aspectj.lang.annotation.Before; import org.aspectj.lang.annotation.Pointcut; @Aspect public class Magician implements MindReader {@Pointcut("execution(* com.stono.sprtest3.Thinker.thinkOfSomething(String)) && args(thoughts)")public void thinking(String thoughts) {}private String thoughts;@Override@Before("thinking(thoughts)")public void interceptThoughts(String thoughts) {System.out.println("Intercepting volunteer's thoughts");this.thoughts = thoughts;}@Overridepublic String getThoughts() {return thoughts;} }?
POJO:
package com.stono.sprtest3; public interface Thinker {void thinkOfSomething(String thoughts); } package com.stono.sprtest3; public class Volunteer implements Thinker {private String thoughts;@Overridepublic void thinkOfSomething(String thoughts) {this.thoughts = thoughts;}public String getThoughts() {return thoughts;} }?
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