问题描述

项目结构：

运行截图：

代码：

package proxy.Proxy;
//抽象对象
public interface Employee {
    String hearPhone(String aString);
}

package proxy.Proxy;
//具体对象:老板
public class Boss implements Employee {
    

    @Override
    public String hearPhone(String aString) {
        return aString+"老板接电话";
    }
    
}

package proxy.Proxy;
//代理对象
public class Secretary implements Employee {
    Employee object = new Boss();
    @Override
    public String hearPhone(String aString) {
        if(aString.equals("chifan")){
            System.out.println("老板出差了");
            return "";
        }
        else if(aString.equals("qingke")){
            System.out.println("老板出差了");
            return "";
        }else{
            
            System.out.println("object.hearPhone(aString):"+object.hearPhone(aString));
            System.out.println("调用目标对象后的操作");
            return object.hearPhone(aString);
        }
        
        
    }
    
}

package proxy.Proxy;
public class TestUse {
    
    public static void main(String args[]){
        Employee obj = new Secretary();
        obj.hearPhone("chifan");
        obj.hearPhone("qingke");
        obj.hearPhone("zhao youshi");
        
    }
}