package chain_of_responsibility.me;

/*
 * 校长
 */
public class HandlerPresident extends Handler {

    @Override
    protected String handlerRequst(Request request) {

        if (request.getType().equals(RequestLeave.LEAVE_TYPE)) { // 如果是请假的请求，才处理

            return handlerLeaveRequest(request);

        } else {

            return "校长无法受理此请求！";

        }
    }

    private String handlerLeaveRequest(Request request) {

        String returnStr = "";

        RequestLeave rl = (RequestLeave) request;

        returnStr = "校长同意了" + rl.getName() + "的请假！"; //不问天数、全部同意！

        return returnStr;

    }
}

package chain_of_responsibility.me;

public class Client {

    public static void main(String[] args) {

        Handler counsellor = new HandlerCounsellor(); // 辅导员

        Handler dean = new HandlerDean(); // 院长

        Handler president = new HandlerPresident(); // 校长

        // 拼装处理链
        counsellor.setSuccessor(dean);

        dean.setSuccessor(president);

        // 3个不同请求
        RequestLeave request1 = new RequestLeave();

        RequestLeave request2 = new RequestLeave();

        RequestLeave request3 = new RequestLeave();

        request1.setDays(2);

        request1.setName("张三");

        request2.setDays(5);

        request2.setName("李四");

        request3.setDays(9);

        request3.setName("王五");

        // 请求
        System.out.println(counsellor.handlerRequst(request1));
        
        System.out.println(counsellor.handlerRequst(request2));
        
        System.out.println(counsellor.handlerRequst(request3));

    }
}

辅导员同意了张三的请假！
院长同意了李四的请假！
校长同意了王五的请假！