Spring @Aspect切面参数传递

<?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.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd"> <!-- 这个声明会创建AnnotationAwareAspectJAutoProxyCreator，进行切面Bean的代理 -->
<aop:aspectj-autoproxy />
<!-- 必须将切面类声明为一个Bean -->
<bean id="magician" class="com.stono.sprtest3.Magician"></bean>
<bean id="volunteer" class="com.stono.sprtest3.Volunteer"></bean>
</beans>

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情况下，如果有接口就必须用接口来接，否则会报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);
}
}

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;
}
@Override
public String getThoughts() {
return thoughts;
}
}

package com.stono.sprtest3;
public interface Thinker {
void thinkOfSomething(String thoughts);
}
package com.stono.sprtest3;
public class Volunteer implements Thinker {
private String thoughts;
@Override
public void thinkOfSomething(String thoughts) {
this.thoughts = thoughts;
}
public String getThoughts() {
return thoughts;
}
}