鍐欏湪鍓嶉潰锛岃褰曞涔犺璁℃ā寮忕殑绗旇锛屾彁楂樿璁℃ā寮忕殑鐏垫椿杩愮敤瀛︿範鍦板潃https://www.bilibili.com/video...https://www.bilibili.com/video...鍙傝€冩枃绔爃ttp://c.biancheng.net/view/1...椤圭洰婧愮爜https://gitee.com/zhuang-kang/DesignPattern26銆佺瓥鐣ユā寮?6.1绛栫暐妯″紡绛栫暐锛圫trategy锛夋ā寮忕殑瀹氫箟鍜岀壒鐐规ā寮忓畾涔夛細杩欑妯″紡瀹氫箟浜嗕竴绯诲垪鐨勭畻娉曪紝骞跺姣忎釜绠楁硶杩涜浜嗗皝瑁咃紝浣垮緱瀹冧滑鍙互鐩镐簰鏇挎崲锛岀畻娉曠殑鏀瑰彉涓嶄細褰卞搷鍒板鎴疯皝浣跨敤绠楁硶銆傜瓥鐣ユā寮忓睘浜庡璞¤涓烘ā寮忋€傚畠瀵圭畻娉曡繘琛屽皝瑁咃紝灏嗕娇鐢ㄧ畻娉曠殑璐ｄ换涓庣畻娉曠殑瀹炵幇鍒嗙锛屽鎵樼粰涓嶅悓鐨勫璞℃潵绠＄悊杩欎簺绠楁硶銆係trategy妯″紡鐨勪富瑕佷紭鐐瑰涓嬨€傚涓潯浠惰鍙ヤ笉鏄撶淮鎶わ紝浣跨敤绛栫暐妯″紡鍙互閬垮厤浣跨敤澶氫釜鏉′欢璇彞锛屽if...else璇彞锛宻witch...case璇彞銆傜瓥鐣ユā寮忔彁渚涗簡涓€绯诲垪鍙噸鐢ㄧ殑绠楁硶鏃忋€傞€傚綋鍦颁娇鐢ㄧ户鎵垮彲浠ュ皢绠楁硶鏃忕殑鍏叡浠ｇ爜杞Щ鍒扮埗绫讳腑锛屼粠鑰岄伩鍏嶉噸澶嶄唬鐮併€傜瓥鐣ユā寮忓彲浠ヤ负鍚屼竴琛屼负鎻愪緵涓嶅悓鐨勫疄鐜帮紝瀹㈡埛鍙互鏍规嵁涓嶅悓鐨勬椂闂存垨绌洪棿闇€姹傞€夋嫨涓嶅悓鐨勫疄鐜般€傜瓥鐣ユā寮忓寮€闂師鍒欐彁渚涗簡瀹岀編鐨勬敮鎸侊紝鍙互鍦ㄤ笉淇敼鍘熸湁浠ｇ爜鐨勬儏鍐典笅鐏垫椿鐨勬坊鍔犳柊鐨勭畻娉曘€傜瓥鐣ユā寮忔妸绠楁硶鐨勪娇鐢ㄦ斁鍒扮幆澧冪被涓紝鎶婄畻娉曠殑瀹炵幇绉诲埌鍏蜂綋鐨勭瓥鐣ョ被涓紝瀹炵幇浜嗕袱鑰呯殑鍒嗙銆傚畠鐨勪富瑕佺己鐐瑰涓嬨€傚鎴风蹇呴』浜嗚В鎵€鏈夌瓥鐣ョ畻娉曚箣闂寸殑宸紓锛屼互渚垮湪姝ｇ‘鐨勬椂闂撮€夋嫨鍚堥€傜殑绠楁硶绫诲埆銆傜瓥鐣ユā寮忓垱寤轰簡寰堝绛栫暐绫伙紝澧炲姞浜嗙淮鎶ょ殑闅惧害銆?6.2绛栫暐妯″紡鐨勭粨鏋勫拰瀹炵幇26.2.1绛栫暐妯″紡鐨勭粨鏋勬娊璞＄瓥鐣ワ紙Strategy锛夌被锛氬畾涔変簡涓€涓€氱敤鐨勬帴鍙ｏ紝鍚勭绠楁硶浠ヤ笉鍚岀殑鏂瑰紡瀹炵幇杩欎釜鎺ュ彛锛岀幆澧冭鑹蹭娇鐢ㄨ繖涓帴鍙ｆ潵璋冪敤涓嶅悓鐨勭畻娉曪紝閫氬父浣跨敤鎺ュ彛鎴栨娊璞＄被銆侰oncreteStrategy绫伙細瀹炵幇鎶借薄绛栫暐瀹氫箟鐨勬帴鍙ｏ紝鎻愪緵鍏蜂綋鐨勭畻娉曞疄鐜般€傜幆澧冿紙Context锛夌被锛氭寔鏈変竴涓瓥鐣ョ被鐨勫紩鐢紝鏈€缁堣瀹㈡埛绔皟鐢ㄣ€?6.2.2浠ｇ爜瀹炵幇涓嶅悓鑺傛棩涓嶅悓淇冮攢娲诲姩鍏崇郴绫诲浘Strategypackagecom.zhuang.strategy;/***@ClassnameStrategy*@Description瀹氫箟鍏叡鎺ュ彛*@Date2021/3/3115:29*@Createdbydell*/publicinterfaceStrategy{voidshow();}StrategyApackagecom.zhuang.strategy;/***@ClassnameStrategyA*@Description瀹氫箟姣忎釜鑺傛棩鐨勫叿浣撶瓥鐣ヨ鑹插拰鍏蜂綋淇冮攢*@Date2021/3/3115:29*@Createdbydell*/publicclassStrategyAimplementsStrategy{@Overridepublicvoidshow(){System.out.println("淇冮攢涔颁竴閫佷竴");}}StrategyBpackagecom.zhuang.strategy;/***@ClassnameStrategyB*@Description瀹氫箟姣忎釜鑺傛棩鐨勫叿浣撶瓥鐣ヨ鑹插拰鍏蜂綋淇冮攢*@Date2021/3/3115:30*@Createdbydell*/publicclassStrategyBimplementsStrategy{@Overridepublicvoidshow(){System.out.println("B鎺ㄥ箍婊?00鍑?0");}}StrategyCpackagecom.zhuang.strategy;/***@ClassnameStrategyC*@Description瀹氫箟姣忎釜鑺傛棩鍏蜂綋绛栫暐瑙掕壊鐨勫叿浣撲績閿€娲诲姩*@Date2021/3/3115:30*@Createdbydell*/public绫籗trategyC瀹炵幇绛栫暐{@Overridepublicvoidshow(){System.out.println("C淇冮攢婊?00鍏冨彲鍏戞崲灏忕ぜ鐗?);}}SalesManpackagecom.zhuang.strategy;/***@ClassnameSalesMan*@Description瀹氫箟杩炴帴涓婁笅鏂囩殑鐜瑙掕壊鍚戝鎴烽攢鍞績閿€娲诲姩*@Date2021/3/3115:32*@Createdbydell*/publicclassSalesMan{//鎸佹湁鎶借薄绛栫暐瑙掕壊鐨勫紩鐢╬rivateStrategystrategy;publicSalesMan(绛栫暐绛栫暐){杩欎釜銆傛垬鐣?鎴樼暐锛泒publicStrategygetStrategy(){杩斿洖绛栫暐锛泒publicvoidsetStrategy(绛栫暐绛栫暐){this.strategy=strategy;}//灞曠ず淇冮攢publicvoidsalesManShow(){strategy.show();}}Clientpackagecom.zhuang.strategy;/***@ClassnameClient*@DescriptionStrategy妯″紡娴嬭瘯绫?@Date2021/3/3115:34*@Createdbydell*/publicclassClient{publicstaticvoidmain(String[]args){SalesMansalesMan=newSalesMan(newStrategyA());//鍏竴鍎跨鑺俿alesMan.salesManShow();System.out.println("========================");//鍔冲姩鑺傞攢鍞甅an.setStrategy(newStrategyB());salesMan.salesManShow();System.out.println("=======================");//绔崍鑺俿alesMan.setStrategy(newStrategyC());salesMan.salesManShow();}}26.3Strategy妯″紡搴旂敤鍦烘櫙褰撶郴缁熼渶瑕佸姩鎬侀€夋嫨鍑犵绠楁硶涓殑涓€绉嶆椂锛屽彲浠ュ皢姣忕绠楁硶灏佽鍒颁竴涓猻trategy绫讳腑锛屽湪涓€涓畾涔変簡澶氫釜琛屼负鐨勭被涓紝杩欎簺琛屼负鍦ㄨ繍琛屼腑浠ュ涓潯浠惰鍙ョ殑褰㈠紡鍑虹幇鍦ㄨ繖涓被涓紝姣忎釜鏉′欢鍒嗘敮閮藉彲浠ョЩ鍔ㄥ埌瀹冧滑鍚勮嚜鐨勭瓥鐣ョ被涓潵鏇挎崲杩欎簺鏉′欢璇彞銆傜郴缁熶腑鍚勪釜绠楁硶瀹屽叏鐙珛锛岃姹傚瀹㈡埛绔殣钘忓叿浣撶畻娉曠殑瀹炵幇缁嗚妭銆傚綋绯荤粺瑕佹眰浣跨敤璇ョ畻娉曠殑瀹㈡埛绔笉搴旇鐭ラ亾瀹冩墍鎿嶄綔鐨勬暟鎹椂锛屽彲浠ヤ娇鐢ㄧ瓥鐣ユā寮忔潵闅愯棌涓庤绠楁硶鐩稿叧鐨勬暟鎹粨鏋勩€傚涓被涔嬮棿鐨勫敮涓€鍖哄埆鏄畠浠殑琛屼负涓嶅悓銆傛偍鍙互浣跨敤绛栫暐妯″紡鍦ㄨ繍琛屾椂鍔ㄦ€侀€夋嫨瑕佹墽琛岀殑鐗瑰畾琛屼负銆?6.4Comparator涓璊DK婧愮爜鍒嗘瀽绛栫暐妯″紡銆侫rrays绫讳腑鏈変竴涓猻ort()鏂规硶锛屽涓嬶細publicclassArrays{publicstatic
