实验15：职责链模式
实验15：职责链模式
本次实验属于模仿型实验，通过本次实验学生将掌握以下内容：
1、理解职责链模式的动机，掌握该模式的结构；
2、能够利用职责链模式解决实际问题。
[实验任务一]：财务审批
某物资管理系统中物资采购需要分级审批，主任可以审批1万元及以下的采购单，部门经理可以审批5万元及以下的采购单，副总经理可以审批10万元及以下的采购单，总经理可以审批20万元及以下的采购单，20万元以上的采购单需要开职工大会确定。现用职责链模式设计该系统。
实验要求：
1. 提交类图；
2. 提交源代码；
JAVA
package rjsj.no15;
public abstract class Leader {
protected String name;
//上级领导
protected Leader successor;
public Leader(String name) {
this.name = name;
}
public void setSuccessor(Leader successor) {
this.successor = successor;
}
protected abstract void handleRequest(ShoppingRequest request);
}
package rjsj.no15;
public class ShoppingRequest {
private String shoppingReason;
private double billMoney;
public ShoppingRequest(String shoppingReason,double billMoney){
this.shoppingReason = shoppingReason;
this.billMoney = billMoney;
}
public String getShoppingReason() {
return shoppingReason;
}
public void setShoppingReason(String shoppingReason) {
this.shoppingReason = shoppingReason;
}
public double getBillMoney() {
return billMoney;
}
public void setBillMoney(double billMoney) {
this.billMoney = billMoney;
}
}
package rjsj.no15;
public class Client {
public static void main(String[] args) {
Leader objDirector,objDepartmentManager,objViceManager,objGeneralManager;
objDirector = new Director("张主任");
objDepartmentManager = new DepartmentManager("刘部门经理");
objViceManager = new ViceManager("王副经理");
objGeneralManager = new GeneralManager("赵经理");
//设置上级
objDirector.setSuccessor(objDepartmentManager);
objDepartmentManager.setSuccessor(objViceManager);
objViceManager.setSuccessor(objGeneralManager);
ShoppingRequest shoppingRequest1 = new ShoppingRequest("买打印纸",1000);
ShoppingRequest shoppingRequest2 = new ShoppingRequest("购置电脑",20000);
ShoppingRequest shoppingRequest3 = new ShoppingRequest("购置空调",80000);
ShoppingRequest shoppingRequest4 = new ShoppingRequest("办公室装修",160000);
ShoppingRequest shoppingRequest5 = new ShoppingRequest("收购XX公司",1000000);
objDirector.handleRequest(shoppingRequest1);
System.out.println("****************************************");
objDirector.handleRequest(shoppingRequest2);
System.out.println("****************************************");
objDirector.handleRequest(shoppingRequest3);
System.out.println("****************************************");
objDirector.handleRequest(shoppingRequest4);
System.out.println("****************************************");
objDirector.handleRequest(shoppingRequest5);
System.out.println("****************************************");
}
}
package rjsj.no15;
//主任
class Director extends Leader{
public Director(String name) {
super(name);
}
public void handleRequest(ShoppingRequest request){
if (request.getBillMoney()<10000.00){
System.out.println(name + "主任处理物资采购" + request.getShoppingReason() + "采购资金为" + request.getBillMoney() + "元");
} else {
if (this.successor != null){
this.successor.handleRequest(request);
}
}
}
}
//部门经理
class DepartmentManager extends Leader{
public DepartmentManager(String name) {
super(name);
}
protected void handleRequest(ShoppingRequest request) {
if (request.getBillMoney()<50000.00){
System.out.println(name + "部门经理处理物资采购" + request.getShoppingReason() + "采购资金为" + request.getBillMoney() + "元");
} else {
if (this.successor != null){
this.successor.handleRequest(request);
}
}
}
}
//副经理
class ViceManager extends Leader{
public ViceManager(String name) {
super(name);
}
@Override
protected void handleRequest(ShoppingRequest request) {
if (request.getBillMoney()<100000.00){
System.out.println(name + "副经理处理物资采购" + request.getShoppingReason() + "采购资金为" + request.getBillMoney() + "元");
} else {
if (this.successor != null){
this.successor.handleRequest(request);
}
}
}
}
//总经理
class GeneralManager extends Leader{
public GeneralManager(String name) {
super(name);
}
@Override
protected void handleRequest(ShoppingRequest request) {
if (request.getBillMoney()<200000.00){
System.out.println(name + "总经理处理物资采购" + request.getShoppingReason() + "采购资金为" + request.getBillMoney() + "元");
} else {
System.out.println("董事会将开会处理物资采购" + request.getShoppingReason() + "采购资金为" + request.getBillMoney() + "元");
}
}
}
C++
#include<iostream>
using namespace std;
class PurchaseRequest {
private:
int money;
public:
PurchaseRequest(int money) {
this->money=money;
}
void setMoney(int money) {
this->money=money;
}
int getMoney(){
return this->money;
}
};
class Leader {
protected:
string name;
Leader *successor;
public:
Leader(string name) {
this->name=name;
}
void setSuccessor(Leader *successor) {
this->successor=successor;
}
virtual void handleRequest(PurchaseRequest *request)=0;
};
class Director:public Leader{
private:
string name;
public:
Director(string name):Leader(name){}
void handleRequest(PurchaseRequest *request) {
// TODO Auto-generated method stub
if(request->getMoney()<=1) {
cout<<"主任"<<this->name<<"审批"<<request->getMoney()<<"万元的采购单"<<endl;
}
else {
if(this->successor!=NULL) {
this->successor->handleRequest(request);
}
}
}
};
class Manager : public Leader{
private:
string name;
public:
Manager(string name):Leader(name){}
void handleRequest(PurchaseRequest *request) {
if(request->getMoney()<=5) {
cout<<"部门经理"<<name<<"审批"<<request->getMoney()<<"万元的采购单"<<endl;
}
else {
if(this->successor!=NULL) {
this->successor->handleRequest(request);
}
}
}
};
class DeputyGeneralManager: public Leader{
private:
string name;
public:
DeputyGeneralManager(string name):Leader(name){}
void handleRequest(PurchaseRequest *request) {
if(request->getMoney()<=10) {
cout<<"副总经理"<<name<<"审批"<<request->getMoney()<<"万元的采购单"<<endl;
}
else {
if(this->successor!=NULL) {
this->successor->handleRequest(request);
}
}
}
};
class GeneralManager: public Leader{
private:
string name;
public:
GeneralManager(string name):Leader(name){}
void handleRequest(PurchaseRequest *request) {
if(request->getMoney()<=20) {
cout<<"总经理"<<name<<"审批"<<request->getMoney()<<"万元的采购单"<<endl;
}
else if(request->getMoney()>20) {
cout<<"总经理"<<name<<"召开职工大会审批"<<request->getMoney()<<"万元的采购单"<<endl;
}
else {
if(this->successor!=NULL) {
this->successor->handleRequest(request);
}
}
}
};
int main(){
Leader *objDirector,*objManager,*objDeputyGeneralManager,*objGeneralManager;
objDirector=new Director("张三");
objManager=new Manager("李四");
objDeputyGeneralManager=new DeputyGeneralManager("王五");
objGeneralManager=new GeneralManager("赵六");
objDirector->setSuccessor(objManager);
objManager->setSuccessor(objDeputyGeneralManager);
objDeputyGeneralManager->setSuccessor(objGeneralManager);
PurchaseRequest *pr1=new PurchaseRequest(1);
objDirector->handleRequest(pr1);
PurchaseRequest *pr2=new PurchaseRequest(3);
objDirector->handleRequest(pr2);
PurchaseRequest *pr3=new PurchaseRequest(8);
objDirector->handleRequest(pr3);
PurchaseRequest *pr4=new PurchaseRequest(12);
objDirector->handleRequest(pr4);
PurchaseRequest *pr5=new PurchaseRequest(22);
objDirector->handleRequest(pr5);
return 0;
}
3. 注意编程规范。
