23种设计模式之责任链模式

请假案例的代码实现：

/**
 * 封装请假的基本信息
 * @author 万河归海
 *
 */
public class LeaveRequest {
	private String empName;
	private int LeavesDays;
	private String reason;
	public LeaveRequest(String empName, int leavesDays, String reason) {
		super();
		this.empName = empName;
		LeavesDays = leavesDays;
		this.reason = reason;
	}
	public String getEmpName() {
		return empName;
	}
	public void setEmpName(String empName) {
		this.empName = empName;
	}
	public int getLeavesDays() {
		return LeavesDays;
	}
	public void setLeavesDays(int leavesDays) {
		LeavesDays = leavesDays;
	}
	public String getReason() {
		return reason;
	}
	public void setReason(String reason) {
		this.reason = reason;
	}
}

/**
 * 主任
 * @author 万河归海
 *
 */
public class Director extends Leader{

	public Director(String name) {
		super(name);
	}

	@Override
	public void handleRequest(LeaveRequest request) {
		if(request.getLeavesDays()<3){
			System.out.println("员工："+request.getEmpName()+",请假"+request.getLeavesDays()+"，理由是"+request.getReason());
			System.out.println("主任："+this.name+"同意");
		}else{
			if(this.nextLeader!=null){
				System.out.println("主任："+this.name+"同意");
				this.nextLeader.handleRequest(request);
			}
		}
	}
	
}

public class Manager extends Leader{

	public Manager(String name) {
		super(name);
	}

	@Override
	public void handleRequest(LeaveRequest request) {
		if(request.getLeavesDays()<10){
			System.out.println("员工："+request.getEmpName()+",请假"+request.getLeavesDays()+"，理由是"+request.getReason());
			System.out.println("经理："+this.name+"同意");
		}else{
			if(this.nextLeader!=null){
				System.out.println("经理："+this.name+"同意");
				this.nextLeader.handleRequest(request);
			}
		}
	}
}

/**
 * 总经理
 * @author 万河归海
 *
 */
public class GeneralManager extends Leader{

	public GeneralManager(String name) {
		super(name);
	}

	@Override
	public void handleRequest(LeaveRequest request) {
		if(request.getLeavesDays()<30){
			System.out.println("员工："+request.getEmpName()+",请假"+request.getLeavesDays()+"，理由是"+request.getReason());
			System.out.println("总经理："+this.name+"同意");
		}else{
			System.out.println("拒绝");
		}
	}
}

public class Test {
	public static void main(String[] args) {
		Leader d = new Director("张三");
		Leader m = new Manager("李四");
		Leader gm = new GeneralManager("王五");
		
		//设置责任链后继对象
		d.setNextLeader(m);
		m.setNextLeader(gm);
		
		LeaveRequest request = new LeaveRequest("tom", 29, "旅行");
		d.handleRequest(request);
	}
}