审批假条（职责链模式实战）

假条（职责链模式实战）"/>

审批假条（职责链模式实战）

某OA系统需要提供一个假条审批的模块，如果员工请假天数小于3天，主任可以审批该假条；如果员工请假天数大于等于3天，小于10天，经理可以审批；如果员工请假天数大于等于10天，小于30天，总经理可以审批；如果超过30天，总经理也不能审批，提示相应的拒绝信息。

类图：

代码：
抽象处理者Leader类：

public abstract class Leader
{protected String name;protected Leader successor;public Leader(String name){this.name=name;}public void setSuccessor(Leader successor){this.successor=successor;}public abstract void handleRequest(Request request);
}

具体处理者：
1.Director（主任）类：

public class Director extends Leader{public Director(String name) {super(name);}@Overridepublic void handleRequest(Request request) {if(request.getDay()<3){System.out.println(name+"批准"+request.getName()+request.getDay()+"天的假");}else{this.successor.handleRequest(request);}}
}

2.Manager（经理）类：

public class Manager extends Leader{public Manager(String name) {super(name);}@Overridepublic void handleRequest(Request request) {if(request.getDay()>=3 && request.getDay()<10){System.out.println(name+"批准"+request.getName()+request.getDay()+"天的假");}else{this.successor.handleRequest(request);}}
}

3.GeManage（总经理）类：

public class GeManager extends Leader{public GeManager(String name) {super(name);}@Overridepublic void handleRequest(Request request) {if(request.getDay()>=10 && request.getDay()<30){System.out.println(name+"批准"+request.getName()+request.getDay()+"天的假");}else{System.out.println(request.getName()+"想要请"+request.getDay()+"天的假，不给批准！");}}
}

Request类：

public class Request {public String name;public int day;public Request(String name, int day) {this.name = name;this.day = day;}public String getName() {return name;}public void setName(String name) {this.name = name;}public int getDay() {return day;}public void setDay(int day) {this.day = day;}
}

Client（客户）类：

public class Client {public static void main(String[] args) {Leader director,manager,gemanager;Request r1,r2,r3,r4;director =new Director("张主任");manager=new Manager("李经理");gemanager=new GeManager("王总经理");director.setSuccessor(manager);manager.setSuccessor(gemanager);r1=new Request("张三",2);r2=new Request("李四",5);r3=new Request("王五",20);r4=new Request("小明",40);director.handleRequest(r1);director.handleRequest(r2);director.handleRequest(r3);director.handleRequest(r4);}}

运行结果截图：
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