Spring @Aspect切面参数传递

Spring @Aspect切面参数传递：

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.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>

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);
    }
}

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;
    }
    @Override
    public 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;
    @Override
    public void thinkOfSomething(String thoughts) {
        this.thoughts = thoughts;
    }
    public String getThoughts() {
        return thoughts;
    }
}