hikeintroduction.java

这个是j2eejava web 编程精要十五讲的全部源码。对学习java web编程的人来说是很能得的资料

package test;

import org.aopalliance.intercept.MethodInvocation;
import org.springframework.aop.IntroductionInterceptor;

public class HikeIntroduction 
              implements IntroductionInterceptor, IHiker {   
    // 是否实作自IHiker接口
    public boolean implementsInterface(Class clazz) {
        return clazz.isAssignableFrom(IHiker.class);
    }
    
    public Object invoke(MethodInvocation methodInvocation) 
                                      throws Throwable {
        // 如果呼叫的方法来自IHiker接口的定义
        if(implementsInterface(
            methodInvocation.getMethod().getDeclaringClass())) {
            // 呼叫执行额外加入的行为
            return methodInvocation.getMethod().
                    invoke(this, methodInvocation.getArguments());
        }
        else {
            return methodInvocation.proceed();
        }
    }
    
    public void doHiking() {
        System.out.println("还要到郊外远足。。。");
    }
}