AOP 深入了解

具体深入详解：
http://www.iteye.com/topic/480860

AOP
代理实现方式：java.lang.reflect.Proxy

实现步骤：
1、继承import java.lang.reflect.InvocationHandler

具体代码：
package com.royzhou.aop;  
 
import java.lang.reflect.InvocationHandler;  
import java.lang.reflect.Method;  
import java.lang.reflect.Proxy;  
 
public class JDKProxy implements InvocationHandler {  
      
    private Object targetObject;  
      
    public Object createProxyObject(Object targetObject) {  
        this.targetObject = targetObject;  
        //生成代理对象  
        return Proxy.newProxyInstance(this.targetObject.getClass().getClassLoader(),this.targetObject.getClass().getInterfaces(),this);  
    }  
 
    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {  
        UserBean userBean = (UserBean) targetObject;  
        String userName = userBean.getUserName();  
        Object result = null;  
        //权限判断  
        if(userName!=null && !"".equals(userName)) {  
            //调用目标对象的方法  
            result = method.invoke(targetObject, args);  
        }   
        return result;  
    }  
}

2、调用
package com.royzhou.aop;  
 
public class TestProxy {  
      
    public static void main(String[] args) {  
        JDKProxy jProxy = new JDKProxy();  
        IUserBean userBean = (IUserBean) jProxy.createProxyObject(new UserBean("royzhou"));  
        userBean.addUser();  
    }  
}