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">
<bean id="volunteer" class="com.stono.sprtest2.Volunteer"></bean>
<bean id="magician" class="com.stono.sprtest2.Magician"></bean>
<bean id="singer" class="com.stono.sprtest2.Singer"></bean>
<aop:config>
<aop:aspect ref="magician">
<aop:pointcut expression="execution(* com.stono.sprtest2.Thinker.thinkOfSomething(String)) and args(thoughts)" id="thinking" />
<aop:before method="interceptThoughts" pointcut-ref="thinking" arg-names="thoughts" />
</aop:aspect>
</aop:config>
</beans>
AppBean：
package com.stono.sprtest2; import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext; public class AppBeans10 {
@SuppressWarnings("resource")
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext("appbeans10.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);
// 没有接口的Bean还是可以用类的；
Singer bean3 = (Singer) context.getBean("singer");
bean3.perform();
}
}
POJO：
package com.stono.sprtest2;
public interface Thinker {
void thinkOfSomething(String thoughts);
}
package com.stono.sprtest2;
public class Volunteer implements Thinker {
private String thoughts;
@Override
public void thinkOfSomething(String thoughts) {
this.thoughts = thoughts;
}
public String getThoughts() {
return thoughts;
}
}
AOP：
package com.stono.sprtest2;
public interface MindReader {
void interceptThoughts(String thoughts);
String getThoughts();
}
package com.stono.sprtest2;
public class Magician implements MindReader {
private String thoughts;
@Override
public void interceptThoughts(String thoughts) {
System.out.println("Intercepting volunteer's thoughts");
this.thoughts = thoughts;
}
@Override
public String getThoughts() {
return thoughts;
}
}
