實(shí)驗(yàn)五責(zé)任鏈模式

1、實(shí)驗(yàn)5：責(zé)任鏈模式一、實(shí)驗(yàn)?zāi)康谋緦?shí)驗(yàn)要求學(xué)生掌握責(zé)任鏈模式，要求學(xué)生理解責(zé)任鏈模式中的二種角色并完成類的定義及測(cè)試。二、實(shí)驗(yàn)任務(wù)1 計(jì)算整數(shù)的階乘。要求在計(jì)算階乘時(shí)綜合考慮計(jì)算速度與內(nèi)存占用多少，使用責(zé)任鏈模式分析有哪些類以及這些類的角色，完成這些類的定義并分別測(cè)試每一種處理情況。答：處理者（Handler）角色：類Handler 具體處理者（ConcreteHandler）角色：類UseInt、類UseLong、類UseBigInteger（1）處理者（Handler）Handler.javapublic interface Handler public void handleRequest

2、(String str); public void setNextHandler(Handler handler);（2）具體處理者（ConcreteHandler）UseInt.javapublic class UseInt implements Handlerprivate Handler handler;private int result = 1; public void handleRequest(String str) try int n=Integer.parseInt(str); int i=1; while(i<=n) result = result*i; if(res

3、ult<=0) System.out.println("超出我的能力范圍，我計(jì)算不了"); handler.handleRequest(str); return ; i+; System.out.println(str+"的階乘："+result+"n"); catch (NumberFormatException exp) System.out.println(exp.toString(); public void setNextHandler(Handler handler) this.handler=handler; Us

4、eLong.javapublic class UseLong implements Handler private Handler handler; long result=1; public void handleRequest(String str) try int i=1; long n=Long.parseLong(str); while(i<=n) result=result*i; if(result<=0) System.out.println("超出我的能力范圍，我計(jì)算不了"); handler.handleRequest(str); return

5、 ; i+; System.out.println(str+"的階乘："+result+"n"); catch(NumberFormatException exp) System.out.println(exp.toString(); public void setNextHandler(Handler handler) this.handler=handler; UseBigInteger.javapublic class UseBigInteger implements Handlerprivate Handler handler;private B

6、igInteger result = new BigInteger("1"); public void handleRequest(String str) BigInteger n = new BigInteger(str); BigInteger ONE = new BigInteger("1"); BigInteger i = ONE; while(pareTo(n)<=0) result=result.multiply(i); i=i.add(ONE); System.out.println(str+"的階乘："+resu

7、lt+"n"); public void setNextHandler(Handler handler) this.handler=handler; （3）測(cè)試類：Test.java public class Test private Handler useInt,useLong,useBigInteger;public void createChain()useInt = new UseInt();useLong = new UseLong();useBigInteger = new UseBigInteger();useInt.setNextHandler(useLon

8、g);useLong.setNextHandler(useBigInteger);public void responseClient(String str)System.out.println("計(jì)算"+str+"的階乘");useInt.handleRequest(str);public static void main(String args) Test test=new Test();test.createChain();test.responseClient("10");test.responseClient("2

9、0");test.responseClient("32");運(yùn)行截圖如下：2 采購(gòu)審批往往是分級(jí)進(jìn)行的，其常常根據(jù)采購(gòu)金額的不同由不同層次的主管人員來(lái)審批。例如，主任可以審批5萬(wàn)元以下（不包括5萬(wàn)元）的采購(gòu)單，副董事長(zhǎng)可以審批5萬(wàn)元至10 萬(wàn)元（不包括10萬(wàn)元）的采購(gòu)單，董事長(zhǎng)可以審批10萬(wàn)元至50萬(wàn)元（不包括50 萬(wàn)元）的采購(gòu)單，50 萬(wàn)元及以上的采購(gòu)單就需要開董事會(huì)討論決定。使用責(zé)任鏈模式分析有哪些類以及這些類的角色，完成這些類的定義并分別測(cè)試每一種處理情況。答：處理者（Handler）角色：類Handler 具體處理者（ConcreteHandler）角色：

10、類ChairMan.java、類Vice_president、類President 、類Meetting（1）處理者（Handler）Handler.javapublic interface Handler public void handleRequest(String str); public void setNextHandler(Handler handler);（2）具體處理者（ConcreteHandler）ChairMan.javapublic class ChairMan implements Handler Handler handler; public void reque

11、stHandle(String str) try long money = Long.parseLong(str); if(money<50000) System.out.println("主任審批"+money+"元"); System.out.println(); else System.out.println(money+"元"+"超出主任范疇"); handler.requestHandle(str); catch(Exception e) public void setNextHandler(Han

12、dler handler) this.handler=handler; Vice_president.javaclass Vice_president implements Handler Handler handler; public void requestHandle(String str) try long money=Long.parseLong(str); if(money>=50000&&money<100000) System.out.println("副董事長(zhǎng)審批"+money+"元"); System.ou

13、t.println(); else System.out.println(money+"元"+"超出副董事長(zhǎng)范疇"); handler.requestHandle(str); catch(Exception e) public void setNextHandler(Handler handler) this.handler=handler; President.javaclass President implements Handler Handler handler; public void requestHandle(String str) try

14、 long money=Long.parseLong(str); if(money>=100000&&money<500000) System.out.println("董事長(zhǎng)審批"+money+"元"); System.out.println(); else System.out.println(money+"元"+"超出董事長(zhǎng)范疇"); handler.requestHandle(str); catch(Exception e) public void setNextHandler(

15、Handler handler) this.handler=handler; Meetting.javaclass Meetting implements Handler Handler handler; public void requestHandle(String str) try BigInteger money=new BigInteger(str); if(pareTo(new BigInteger("500000")>=0) System.out.println("會(huì)議審批"+money+"元"); System.

16、out.println(); catch(Exception e) public void setNextHandler(Handler handler) this.handler=handler; （3）測(cè)試類：Test.java public class Test ChairMan chairman; Vice_president vice_president; President president; Meetting meetting;public void createChine() chairman= new ChairMan(); vice_president = new Vic

17、e_president(); president = new President(); meetting = new Meetting (); chairman.setNextHandler(vice_president);vice_president.setNextHandler(president);president.setNextHandler(meetting);public void setClientRequest(String str)System.out.println("采購(gòu)金額:"+str+"元");chairman.request

18、Handle(str); public static void main(String args) Test test = new Test();test.createChine();test.setClientRequest("6000");test.setClientRequest("60000");test.setClientRequest("110000");test.setClientRequest("6000000");運(yùn)行截圖如下：3 公司請(qǐng)假審批流程如下：如果請(qǐng)假小于3天只需要項(xiàng)目經(jīng)理批復(fù)就行；如果

19、請(qǐng)假大于等于3天，小于7天需要人事經(jīng)理批復(fù)；如果請(qǐng)假大于等于7天，小于15天需要總經(jīng)理批復(fù)；如果申請(qǐng)請(qǐng)假大于等于15天，決絕批復(fù)。使用責(zé)任鏈模式分析有哪些類以及這些類的角色，完成這些類的定義并分別測(cè)試每一種處理情況。答：處理者（Handler）角色：類Handler 具體處理者（ConcreteHandler）角色：類Project_Manager、類Personel_Manager、類Top_Manager、類Meetting（1）處理者（Handler）Handler.javapublic interface Handler public void handleRequest(String

20、 str); public void setNextHandler(Handler handler);（2）具體處理者（ConcreteHandler）Project_Manager.javapublic class Project_Manager implements Handler Handler handler; public void requestHandle(String str) try int day=Integer.parseInt(str); if(day<3) System.out.println("項(xiàng)目經(jīng)理批復(fù)n"); else System.

21、out.println("超出項(xiàng)目經(jīng)理職權(quán)"); handler.requestHandle(str); catch(Exception e) public void setNextHandler(Handler handler) this.handler=handler; Personel_Manager.javapublic class Personel_Manager implements Handler Handler handler; public void requestHandle(String str) try int day=Integer.parseIn

22、t(str); if(day>=3&&day<7) System.out.println("人事經(jīng)理批復(fù)n"); else System.out.println("超出人事經(jīng)理職權(quán)"); handler.requestHandle(str); catch(Exception e) public void setNextHandler(Handler handler) this.handler=handler; Top_Manager.javapublic class Top_Manager implements Handler

23、 Handler handler; public void requestHandle(String str) try int day=Integer.parseInt(str); if(day>=7&&day<15) System.out.println("總經(jīng)理批復(fù)n"); else System.out.println("總經(jīng)理考慮"); handler.requestHandle(str); catch(Exception e) public void setNextHandler(Handler handler) t

24、his.handler=handler; Meetting.javapublic class Meetting implements Handler Handler handler; public void requestHandle(String str) try int day=Integer.parseInt(str); if(day>=15) System.out.println("決絕批復(fù)n"); catch(Exception e) public void setNextHandler(Handler handler) this.handler=handle