鐩綍緇撴瀯錛?
1.鍩烘湰姒傚康
2.鍩虹緇撴瀯
3.鍩轟簬鍩虹緇撴瀯鐨勬ā寮忔紨鍖栬繃紼?
鍏跺疄榪欐牱鐨勫眰嬈℃槸寰堢畝鍗曚簡錛屽湪鍩虹緇撴瀯璇炵敓涔嬪悗錛屽熀浜庡鎵樼殑妯″紡宸茬粡綆楁槸寰堟槑浜嗙殑浜嗐傜劧鍚庯紝澶ф浠嬬粛鍑犱釜鍩轟簬濮旀墭鐨勬ā寮忕殑婕斿寲榪囩▼
1.鍩烘湰姒傚康
榪欓噷鍒楀嚭浜嗗嚑涓浉鍏蟲蹇點?
濮旀墭
涓存椂濮旀墭
DIP鍘熷垯
瀹㈡埛
涓粙鑰咃紙鎴戝彨瀹冧負(fù)綆＄悊鍣ㄥ拰璋冨害鍣紝褰撶劧錛屽湪涓嶅悓妯″紡涓紝鍙栧悕鏈夋墍宸埆錛?
鐩爣瀵硅薄
2.鍩烘湰緇撴瀯
緙栫▼涓紝褰撲綘闇瑕佹煇縐嶆湇鍔★紝浣犲綋鐒朵細(xì)鍘昏皟鐢ㄥ叿鏈夎鏈嶅姟鐨勭洰鏍囧璞★紙鏈夊彲鑳芥槸鏇撮珮灞傛鐨勭粍浠訛級錛屽緢鏄劇劧錛岀粨鏋滐紝灝辨槸榪欐牱涓涓殑緇撴瀯銆俢lient璋冪敤ClassA鏉ュ疄鐜版煇縐嶆湇鍔°?br />
姣斿錛屼負(fù)浜嗗鐞嗗瓧絎︿覆錛屼綘浼?xì)new String錛岀劧鍚庤繘琛屼竴浜涘鐞嗐傜敋鑷籌紝浣犵殑浠ｇ爜閲屽埌澶勯兘鍏呯爩鐫String鐨勮凍榪癸紝榪欐牱紜疄鑳藉緢濂界殑瑙ｅ喅闂銆傝繖鏍風(fēng)殑緇撴瀯鑳屽悗鐨勭悊鐢卞憿錛熼鍏堬紝鎴戞兂璇寸殑鏄紝榪欐牱鐨勭粨鏋勮繚鍙嶄簡DIP鍘熷垯錛岀粏鑺傚簲璇ヤ緷璧栦簬鎶借薄錛岃屼笉鏄緷璧栦簬鍙︿竴涓粏鑺傘傝繖鏍風(fēng)殑渚濊禆鍏崇郴浼?xì)鋴射唬鐮伨~轟箯寮規(guī)э紝寰堥毦澶嶇敤錛岃縼涓鍙戝姩鍏ㄨ韓銆傚簲璇ユ敼榪涚殑鏄紝鎶奀lassA鐨勬娊璞℃彁鍙栧嚭鏉ワ紝鐒跺悗璁ヽlient鍘諱緷璧栦簬IClassA,鍙樻垚濡備笅鍥撅細(xì)
浣嗘槸錛屼簨瀹炰笂錛屾垜浠病鏈夎繖涔堝仛銆傝繖鏄洜涓篠tring榪欐牱鐨勭被瀹炰緥鍏鋒湁寰堝己鐨勭ǔ瀹氭э紝榪欐牱鐨勭ǔ瀹氭т繚璇佷簡瀹冧笉浼?xì)缁忓父鍙樺寲锛寴q欏氨鏄涓虹殑紼沖畾鎬у洜绱犮傝繖鏍峰叿鏈夊己紼沖畾鎬х殑綾繪病蹇呰澶嶆潅鍖栥傛墍浠ワ紝鎴戜滑璁╂帴鍙椾簡client渚濊禆浜庣粏鑺傜殑緇撴灉銆傝繖鏍風(fēng)殑緇嗚妭鏄崟涓鐨勩?
鐒惰岋紝闇姹傛槸鍙樺寲鐨勶紝瑙ｅ喅鏂規(guī)鏄笉紼沖畾鐨勶紝鍦ㄦ垜浠殑欏圭洰涓紝浼?xì)鏈夊ぇ閲忎笉鍏方E沖畾鎬х殑鍥犵礌瀛樺湪銆傚湪欏圭洰涓紝浣犱細(xì)鍙戠幇瀛樺湪鐫澶氫釜鍚屾ц川鑰屽疄鐜扮粏鑺傛湁寮傜殑琛屼負(fù)綾誨瓨鍦ㄣ?
姣斿瀛樺湪鐫榪欐牱鐨勪笁涓被ClassA,ClassB, ClassC,
client鍦ㄤ笉鍚屽湴鏂硅皟鐢ㄥ畠銆傜粨鏋勫浘濡備笅錛?nbsp;
鎴戝亣璁綾lient鏄釜main鍑芥暟錛孫K錛岃皟鐢ㄧ殑浠ｇ爜搴旇鏄繖鏍鳳紝
void main(){
...
ClassA a = new ClassA();
(1) a.MethodOne();
(2) for(int i=0;i<3;i++){
(3) a.MethodTwo();
(4) }
.....
ClassB b = new ClassB();
(5) b.MethodOne();
(6) for(int i=0;i<3;i++){
(7) b.MethodTwo();
(8) }
}
榪欐牱鐨勪唬鐮侊紝緇欎綘鐨勬劅瑙夋庝箞鏍鳳紝涔熻榪樿洰榪囧緱鍘伙紝浠栫‘瀹炴槸璺戝緱璧鋒潵銆備絾榪欐牱鐨勪唬鐮佸瓨鍦ㄦ綔鍦ㄧ殑鍗遍櫓鎬с傚簲璇ヨ褰掑叆緋熺硶璁捐鐨勮寖鐣撮噷銆傞鍏堬紝瀹㈡埛闈㈠涓嶅叿紼沖畾鎬х殑鍥犵礌錛屾牴鎹瓺IP鍘熷垯錛屽畠娌℃湁鎻愬彇鎶借薄錛岃繚鍙嶄簡DIP鍘熷垯銆傚叾嬈★紝client錛坢ain錛夊繀欏昏礋璐ｇ瓥鐣ョ殑緇勭粐(鎴戞妸綾諱技(1)(2)(3)(4)鐨勭洰鏍囧璞＄殑榪欐牱涓緇勮皟鐢ㄨ繃紼嬬О涓虹瓥鐣ョ粍緇?,涔熷氨鏄錛宑lient闈㈠鐨勪笉鏄竴涓畬鍏ㄧ殑榛戠洅瀛愶紝浠栭潰瀵圭殑鏄竴浜涘崐榛戠殑鐩掑瓙錛屽悓鏃訛紝浠栧繀欏葷煡閬撴庝箞鎶婅繖浜涘崐榛戠殑鐩掑瓙緇勮璧鋒潵銆備緥濡?5)(6)(7)(8)榪欎簺瀵瑰鎴鋒潵璇達(dá)紝鏄竴緇勫崐榛戠殑鐩掑瓙銆傚鎴鋒湰韜殑浠誨姟澶噸浜嗭紝鍚屾椂錛岃繖鏍風(fēng)殑浠誨姟寮ユ極鍦ㄥ鎴風(fēng)殑澶村拰鑴氫箣闂達(dá)紝鍙婂叾闆朵貢銆傚緢蹇紝鍙堟湁綾諱技鐨勫彟涓縐嶄笉鍏風(fēng)ǔ瀹氭х殑鍥犵礌鍙備笌榪欐牱鐨勫譏婕椿鍔紝鏈緇堢殑瀹㈡埛灝嗚娣規(guī)病鍦ㄤ笉紼沖畾鎬у洜绱犵粍鎴愮殑澶ф搗閲屻傚鏋滐紝鍒氬ソ鏄綘鍦ㄨ礋璐ｈ繖鏍風(fēng)殑瀹㈡埛緙栫爜錛屾垜錛屽緢鍚屾儏浣犮傞噸鏋勫惂錛岃佸厔銆?
涓嶆弧鎰忥紝濂斤紝鎴戜滑鍋氱涓嬈′慨鏀癸紝鏍規(guī)嵁DIP鍘熷垯錛屾垜浠彁鍙栬繖涓変釜綾葷殑鎶借薄銆傛瘮濡侷Class, 鐒跺悗錛屽ぇ瀹墮兘瀹炵幇浠栥傜劧鍚庯紝鎶奀lassA a = new ClassA(); 鏀逛負(fù)IClass a = new ClassA();OK錛屽緢濂界殑閬靛驚浜咲IP鍘熷垯銆傜劧鍚庯紝鎴戜滑闇瑕佹湁涓涓弬涓庤咃紝鎴戠О璇ョ被涓篊ontext鎴?Manager,mediator)錛屽畠鐨勮亴璐ｅ緢綆鍗曪紝浠呬粎璐熻矗鍗婇粦鐩掑瓙鐨勭粍瑁呫傛垜浠病鏈夌粰浜堜粬榪囧鐨勮亴璐ｃ係RP鐨勮繚鍙嶅悓鏍瘋浜鴻寰楀彲鎬曘傚茍鎶奍Class浣滀負(fù)涓涓鎵樺璞″睘鎬т紶閫掔粰瀹冦傜粨鏋勫浘濡備笅錛?nbsp;
榪欐牱錛屽鎴峰緢杞繪澗鐨勪粠鍗婇粦鐩掑瓙鐨勭瓥鐣ョ粍緇囦腑鑴辯鍑烘潵錛屽畠鍙鍦–ontext涓庤繖涓変釜綾諱箣闂磋繘琛岃閰嶏紝鑰岃閰嶇殑鏂瑰紡錛屼綘鍙互鑷敱閫夋嫨浠諱綍涓縐嶆敞鍏ユ柟寮忋備緥濡傦細(xì)
浣犵粰Context瑁呴厤涓涓狢lassB銆?
Context context = new Context(new ClassB());
OK錛岄拡瀵逛簬涓嶇ǔ瀹氭у洜绱犵殑瑙ｅ喅鏂規(guī)鐨勫熀紜緇撴瀯鍑烘潵浜嗐傝繖涔熸槸鍩轟簬濮旀墭鐨勮璁℃ā寮忕殑鍩虹銆傝繖鏍風(fēng)殑妯″瀷鍏鋒湁娼滃湪鐨勮繘鍖栦笌閫鍖栭棶棰樸?
1.Context鏄釜鍏蜂綋綾伙紝鍏鋒湁涓嶇ǔ瀹氭э紝鏈夌潃寰鎶借薄鏂瑰悜鐨勮繘鍖栥?
2.A綰夸笂鏄釜濮旀墭灞炴с傛湁鐫寰涓存椂濮旀墭鏂瑰悜鐨勯鍖栥?
3.B綰夸笂create榪囩▼鏈変粠瀹㈡埛鍚慍ontext杞Щ鐨勫彉鍖栨с?
4.Context鐨勭粍緇囨潈鏈夌潃鍚慖Class杞Щ鐨勫彲鑳芥с?
鍦ㄤ笅闈㈢殑緇х畫涓紝鎴戜滑浼?xì)浠庡熀鏈瀷涓犚?guī)嵁榪欏洓涓繘鍖栦笌閫鍖栦互鍙婂鎵樼殑鎰忎箟錛屾紨鍙樺嚭涓嶅悓鐨勬ā寮忋?鍚屾椂錛屾垜浼?xì)鎶婂悇涓ā寮忚嚜桧n鐨勮繘鍖栦笌閫鍖栧仛涓畝浠嬶紙鑷韓鐨勬紨鍖栧彲鑳芥紨鍙樻垚鍒殑妯″紡錛?
絳夊緟緇х畫.....
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