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 UseBigIntegerHandler.java public interface publicvoidpublicvoid( 1 )處理者(Handler )Handle

2、r handleRequest(String str);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

3、 ( result <=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) th

4、is . handler =handler; UseLong.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");

5、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; UseBigInteger.javapublic class UseBigInteger implem

6、ents Handler private Handler handler ;private BigInteger 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)

7、;System. out .println(str+ "的階乘："+result +"n"); public void setNextHandler(Handler handler)this . handler =handler; (3)測試類:Test.javapublic class Test private Handler useInt , useLong , useBigInteger public void createChain()useInt = new UseInt();useLong = new UseLong();useBigInte

8、ger = new UseBigInteger();useInt .setNextHandler( useLong );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口 args) Test test= new Test();test.createChai

9、n();test.responseClient("10");test.responseClient("20");test.responseClient("32");運(yùn)行截圖如下:計(jì)算10的階乘工。的階乘：36283G0計(jì)苴20的階乘超出我的熊力范圍，我計(jì)算不了2口的階乘：243290200817 6640000計(jì)算獎(jiǎng)的階乘超出我的能力范圍，我計(jì)息不了超出我的熊力范圍，蓑計(jì)算不732 的階乘：i5315C-S5533353353O-S213t221Q0CQOC'2.采購審批往往是分級(jí)進(jìn)行的，其常常根據(jù)采購金額的不同由不同層次的主

10、管人員來審批。例如，主任可以審批5萬元以下（不包括 5萬元）的采購單，副董事長可以審批5萬元至10萬元（不包括10萬元）的采購單，董事長可以審批 10萬元至50萬元（不包括50萬元）的采購單，50萬元及以上的采購單就需要開董事會(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 ChairMan.java、類 Vice_president、類 President、類 Meetting（1）處理者（Handler）Handler.javapubli

11、c interface Handler publicvoidhandleRequest(String str);publicvoidsetNextHandler(Handler handler);(2)具體處理者(ConcreteHandler)ChairMan.javapublic classChairMan implements HandlerHandlerhandler;public void requestHandle(String str) try long money = Long.parseLong (str);if (money<50000KSystem. out .pr

12、intln("主任審批"+money+ "元")；System. out .println(); else System. out .println(money+"元"+"超出主任范疇"); 3handler .requestHandle(str); catch (Exception e)public void setNextHandler(Handler handler) this . handler =handler;Vice_president.javaclass Vice_president impleme

13、nts Handler Handler handler ;public void requestHandle(String str) try long money=Long. parseLong (str);if (money>=50000&&money<100000) System. out .println("副董事長審批"+money+ "元")；System. out .println(); else System. out .println(money+ "元"+"超出副董事長范疇 &q

14、uot;); 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 long money=Long. parseLong (str);if (money>=100000&&money

15、<500000KSystem. out .println( "董事長審批"+money+ "元")； System. out .println(); else System. out .println(money+ "元"+"超出董事長范疇"); handler .requestHandle(str); catch (Exception e)public void setNextHandler(Handler handler) this . handler =handler;Meetting.javaclas

16、s 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. out .println(); catch (Exception e)public void setN

17、extHandler(Handler handler) this . handler =handler;(3)測試類：Test.javapublic class Test ChairMan chairman ;11Vice_presidentvice_president ;President president ;Meetting meetting ;public void createChine()chairman = new ChairMan();vice_president = new Vice_president();president = new President。；meettin

18、g = new Meetting ();chairman.setNextHandler(vice_president);vice_president .setNextHandler( president ); president.setNextHandler(meetting );public void setClientRequest(String str) System. out .println( "采購金額："+str+ chairman .requestHandle(str);"元");public staticTest test =void

19、main(String口 args) new Test();test.createChine();test.setClientRequest( test.setClientRequest( test.setClientRequest( test.setClientRequest("6000");“60000");"110000");"6000000");運(yùn)行截圖如下:乘財(cái)金額+8?？?。元主任審批元采購金額：行"“元60。*元超出主件后暗 副董事長審批COOOO元采購金額打1cle1。0元二元超出主任兔璃 元超出副董

20、事長范瞬董事長市批110000元采購金額"QmQQQQ元EDgOQ 0元超出主任范疇0。亓超出副董事長范疇00元超出董事長范矚 會(huì)議審批元3.公司請假審批流程如下：如果請假小于3天只需要項(xiàng)目經(jīng)理批復(fù)就行；如果請假大于等于3天，小于7天需要人事經(jīng)理批復(fù)；如果請假大于等于7天，小于15天需要總經(jīng)理批復(fù)；如果申請請假大于等于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_Man

21、ager、 類 Top_Manager、類 Meetting(1)處理者(Handler)Handler.javapublic interface Handler publicvoidhandleRequest(String str);publicvoidsetNextHandler(Handler handler);(2)具體處理者(ConcreteHandler)Project_Manager.javapublic classProject_Managerimplements HandlerHandlerhandler ;public void requestHandle(String s

22、tr) try int day=Integer.parseInt (str);if (day<3)System.out .println("項(xiàng)目經(jīng)理批復(fù) n"); else System.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 classPersonel

23、_Managerimplements HandlerHandlerhandler ;public void requestHandle(String str) try int day=Integer. parseInt (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

24、setNextHandler(Handler handler) this . handler =handler;Top_Manager.javapublic classTop_Managerimplements HandlerHandlerhandler ;publicvoid 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 .prin

25、tln("總經(jīng)理考慮");handler .requestHandle(str); catch (Exception e)public void setNextHandler(Handler handler) this . handler =handler;Meetting.javapublic classMeetting implements HandlerHandlerhandler;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 =handler;(3)測試類：Test.javapublic class Test Project_Man