Spring AOP四种创建通知(拦截器)类型实例

package AdvisorTest;

public interface Shopping ...{
  public String buySomething(String type);
  public String buyAnything(String type);
  public void testException();
}

package AdvisorTest;

public class ShoppingImpl implements Shopping ...{
    private Customer customer;
    public Customer getCustomer() ...{
        return customer;
    }
    public void setCustomer(Customer customer) ...{
        this.customer = customer;
    }
    public String buySomething(String type) ...{
        System.out.println(this.getCustomer().getName()+" bye "+type+" success");
        return null;
    }
    
    public String buyAnything(String type) ...{
       System.out.println(this.getCustomer().getName()+" bye "+type+" success");
       return null;

     }
    public void testException()...{
        throw new ClassCastException();
    }
}

package AdvisorTest;

import java.lang.reflect.Method;

import org.springframework.aop.MethodBeforeAdvice;
//前置通知
public class WelcomeAdvice implements MethodBeforeAdvice ...{

    public void before(Method method, Object[] args, Object obj)
            throws Throwable ...{
        String type=(String)args[0];
        System.out.println("Hello welcome to bye "+type);

    }

}

package AdvisorTest;

import java.lang.reflect.Method;

import org.springframework.aop.AfterReturningAdvice;
import org.springframework.aop.MethodBeforeAdvice;
//后置通知
public class ThankYouAdvice implements AfterReturningAdvice ...{

    public void afterReturning(Object obj, Method method, Object[] arg1,
            Object arg2) throws Throwable ...{
        
         String type=(String)arg1[0];
         System.out.println("Hello Thankyou to bye "+type);
    }
    

}

package AdvisorTest;

import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;

public class MethodAdvisor implements MethodInterceptor ...{

    public Object invoke(MethodInvocation invocation) throws Throwable ...{
        String str=(String)invocation.getArguments()[0];
        System.out.println("this is before"+str+" in MethodInterceptor");
        Object obj=invocation.proceed(); //调用目标方法，如不调用，目标方法将不被执行
        System.out.println("this is after"+str+" in MethodInterceptor");
        return null;
    }

}

package AdvisorTest;

import org.springframework.aop.ThrowsAdvice;

public  class ExceptionAdvisor implements ThrowsAdvice ...{
  public void afterThrowing(ClassCastException e)...{
      System.out.println("this is from exceptionAdvisor");
  }
}

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd" >
<beans>
 <bean id="customer" class="AdvisorTest.Customer">
   <constructor-arg index="0">
     <value>gaoxiang</value>
   </constructor-arg>
    <constructor-arg index="1">
     <value>26</value>
   </constructor-arg>
 </bean>
 
 <bean id="shoppingImpl" class="AdvisorTest.ShoppingImpl">
   <property name="customer">
     <ref local="customer"/>
   </property>
 </bean>

<!-- 前置通知 -->
<bean id="welcomeAdvice" class="AdvisorTest.WelcomeAdvice"/>
<bean id="welcomeAdviceShop" class="org.springframework.aop.framework.ProxyFactoryBean">
  <property name="proxyInterfaces">
    <value>AdvisorTest.Shopping</value>
  </property>
  <property name="target">
    <ref local="shoppingImpl"/>
  </property>
  <property name="interceptorNames">
    <list>
      <value>welcomeAdvice</value>
    </list>
  </property>
  
</bean>

<!-- 后置通知 -->
<bean id="thankyouAdvice" class="AdvisorTest.ThankYouAdvice"/>
<bean id="thankyouAdviceShop" class="org.springframework.aop.framework.ProxyFactoryBean">
  <property name="proxyInterfaces">
    <value>AdvisorTest.Shopping</value>
  </property>
  <property name="target">
    <ref local="shoppingImpl"/>
  </property>
  <property name="interceptorNames">
    <list>
      <value>thankyouAdvice</value>
    </list>
  </property>
  
</bean>

<!-- 环绕通知 -->
<bean id="methodAdvice" class="AdvisorTest.MethodAdvisor"/>
<bean id="methodAdviceShop" class="org.springframework.aop.framework.ProxyFactoryBean">
  <property name="proxyInterfaces">
    <value>AdvisorTest.Shopping</value>
  </property>
  <property name="target">
    <ref local="shoppingImpl"/>
  </property>
  <property name="interceptorNames">
    <list>
      <value>methodAdvice</value>
  
    </list>
  </property>
</bean>

<!-- 异常通知 -->
<bean id="exceptionAdvice" class="AdvisorTest.ExceptionAdvisor"/>
<bean id="exceptionAdviceShop" class="org.springframework.aop.framework.ProxyFactoryBean">
  <property name="proxyInterfaces">
    <value>AdvisorTest.Shopping</value>
  </property>
  <property name="target">
    <ref local="shoppingImpl"/>