CRUD鎼爾涓や笁骞翠簡锛屾€庝箞闃呰Spring婧愮爜锛?/a>
Posted 灏忓倕鍝?,
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浣滆€咃細灏忓倕鍝?br>鍗氬锛?a href="https://link.segmentfault.com/?url=https%3A%2F%2Fbugstack.cn" rel="nofollow">https://bugstack.cn
娌夋穩銆佸垎浜€佹垚闀匡紝璁╄嚜宸卞拰浠栦汉閮借兘鏈夋墍鏀惰幏锛侌煒?/blockquote>
馃懆鈥嶐煉昏繛璇诲悓浜嬪啓鐨勪唬鐮侀兘璐瑰姴锛岃繕璇籗pring锛?/strong>
鍜嬬殑锛孲pring 寰堥毦璇伙紒杩欎釜涓庢垜浠爜鍐滄湞澶曠浉澶勭殑 Spring锛屽氨鍍忕潯鍦ㄤ綘韬竟鐨勫濡囷紝浣犵煡閬撴壘濂硅鍚冦€佽鍠濄€佽闆惰姳閽便€佽涔扮毊鑲ゃ€備絾浣犱笉鐭ラ亾濂圭殑浠撳簱鍏辨湁澶氬皯瀛樼伯銆佷篃涓嶇煡閬撳ス鏄拱浜嗙悊璐㈣繕鏄瓨浜嗛摱琛屻€?em>馃崙寮€涓帺绗戯紝鎺ヤ笅鏉ユ垜瑕佹缁忎簡锛?/em>
涓€銆佷负浠€涔圫pring闅捐鎳傦紵
涓轰粈涔?Spring 澶╁ぉ鐢紝浣嗚鎯冲幓璇讳竴璇绘簮鐮侊紝鎬庝箞灏遍偅涔堥毦锛佸洜涓虹敱
Java鍜孞2EE寮€鍙戦鍩熺殑涓撳Rod Johnson 浜?2002 骞存彁鍑哄苟闅忓悗鍒涘缓鐨?Spring 妗嗘灦锛岄殢鐫€ JDK 鐗堟湰鍜屽競鍦洪渶瑕佸彂灞曡嚦浠婏紝鑷充粖瀹冨凡缁忚秺鏉ヨ秺澶т簡锛?/p>褰撲綘闃呰瀹冪殑婧愮爜浣犱細鎰熻锛?/p>
- 鎬庝箞杩欎唬鐮佽烦鏉ヨ烦鍘荤殑锛屾牴鏈笉鏄儚鑷繁鍐欎唬鐮佷竴鏍烽偅涔?code>鍗曠函
- 涓轰粈涔堥偅涔堝鐨勬帴鍙ｅ拰鎺ュ彛缁ф壙锛岀被A缁ф壙鐨勭被B杩樺疄鐜颁簡绫籄瀹炵幇鐨勬帴鍙
- 绠€鍗曞伐鍘傘€佸伐鍘傛柟娉曘€佷唬鐞嗘ā寮忋€佽瀵熻€呮ā寮忥紝鎬庝箞鐢ㄤ簡浼氭湁杩欐牱澶氱殑璁捐妯″紡浣跨敤
- 鍙堟槸璧勬簮鍔犺浇銆佸張鏄簲鐢ㄤ笂涓嬫枃銆佸張鏄疘OC銆佸張鏄疉OP銆佽疮绌跨殑杩樻湁 Bean 鐨勫０鏄庡懆鏈燂紝涓€鐗囦竴鐗囩殑浠ｇ爜浠庡摢涓嬫墜
鎬庢牱锛岃繖灏辨槸浣犲湪闃呰 Spring 閬囧埌鐨勪竴浜涘垪闂鍚э紵鍏跺疄涓嶆浣犵敋鑷冲彲浠ヨ鍙鏄粠浜嬭繖涓涓氱殑鐮佸啘锛屾兂璇?Spring 婧愮爜閮戒細鏈夌涓嶇煡閬撲粠鍝笅鎵嬬殑鎰熻銆傛墍浠ユ垜鎯充簡涓姙娉曪紝鏃㈢劧 Spring 澶ぇ涓嶅ソ浜嗚В锛岄偅涔堟垜灏卞皾璇曚粠涓€涓皬鐨?Spring 寮€濮嬶紝鎵嬫捀 瀹炵幇涓€涓?Spring 鏄笉鍙互鐞嗚В鐨勬洿濂斤紝鍒鏁堟灉杩樼湡涓嶉敊锛?code>鍦ㄨ姳浜嗗皢杩?涓湀鐨勬椂闂达紝瀹炵幇涓€涓畝鍗曠増鏈殑 Spring 鍚?/code> 鐜板湪瀵?Spring 鐨勭悊瑙ｏ紝鏈変簡寰堝ぇ鐨勬彁鍗囷紝涔熻兘璇绘噦 Spring 鐨勬簮鐮佷簡銆?/p>
浜屻€佸垎浜墜鎾?Spring
閫氳繃杩欐牱鎵嬪啓绠€鍖栫増 Spring 妗嗘灦锛屼簡瑙?Spring 鏍稿績鍘熺悊銆傚湪鎵嬪啓鐨勮繃绋嬩腑浼氱畝鍖?Spring 婧愮爜锛屾憳鍙栨暣浣撴鏋朵腑鐨勬牳蹇冮€昏緫锛岀畝鍖栦唬鐮佸疄鐜拌繃绋嬶紝淇濈暀鏍稿績鍔熻兘锛屼緥濡傦細IOC銆丄OP銆丅ean鐢熷懡鍛ㄦ湡銆佷笂涓嬫枃銆佷綔鐢ㄥ煙銆佽祫婧愬鐞嗙瓑鍐呭瀹炵幇銆?/p>
婧愮爜锛?a href="https://link.segmentfault.com/?url=https%3A%2F%2Fgithub.com%2Ffuzhengwei%2Fsmall-spring" rel="nofollow">https://github.com/fuzhengwei/small-spring
1. 瀹炵幇涓€涓畝鍗曠殑Bean瀹瑰櫒
鍑℃槸鍙互瀛樻斁鏁版嵁鐨勫叿浣撴暟鎹粨鏋勫疄鐜帮紝閮藉彲浠ョО涔嬩负瀹瑰櫒銆備緥濡傦細ArrayList銆丩inkedList銆丠ashSet绛夛紝浣嗗湪 Spring Bean 瀹瑰櫒鐨勫満鏅笅锛屾垜浠渶瑕佷竴绉嶅彲浠ョ敤浜庡瓨鏀惧拰鍚嶇О绱㈠紩寮忕殑鏁版嵁缁撴瀯锛屾墍浠ラ€夋嫨 HashMap 鏄渶鍚堥€備笉杩囩殑銆?/p>
杩欓噷绠€鍗曚粙缁嶄竴涓?HashMap锛孒ashMap 鏄竴绉嶅熀浜庢壈鍔ㄥ嚱鏁般€佽礋杞藉洜瀛愩€佺孩榛戞爲杞崲绛夋妧鏈唴瀹癸紝褰㈡垚鐨勬媺閾惧鍧€鐨勬暟鎹粨鏋勶紝瀹冭兘璁╂暟鎹洿鍔犳暎鍒楃殑鍒嗗竷鍦ㄥ搱甯屾《浠ュ強纰版挒鏃跺舰鎴愮殑閾捐〃鍜岀孩榛戞爲涓娿€傚畠鐨勬暟鎹粨鏋勪細灏藉彲鑳芥渶澶ч檺搴︾殑璁╂暣涓暟鎹鍙栫殑澶嶆潅搴﹀湪 O(1) ~ O(Logn) ~O(n)涔嬮棿锛屽綋鐒跺湪鏋佺鎯呭喌涓嬩篃浼氭湁 O(n) 閾捐〃鏌ユ壘鏁版嵁杈冨鐨勬儏鍐点€備笉杩囨垜浠粡杩?0涓囨暟鎹殑鎵板姩鍑芥暟鍐嶅鍧€楠岃瘉娴嬭瘯锛屾暟鎹細鍧囧寑鐨勬暎鍒楀湪鍚勪釜鍝堝笇妗剁储寮曚笂锛屾墍浠?HashMap 闈炲父閫傚悎鐢ㄥ湪 Spring Bean 鐨勫鍣ㄥ疄鐜颁笂銆?/p>
鍙﹀涓€涓畝鍗曠殑 Spring Bean 瀹瑰櫒瀹炵幇锛岃繕闇€ Bean 鐨勫畾涔夈€佹敞鍐屻€佽幏鍙栦笁涓熀鏈楠わ紝绠€鍖栬璁″涓嬶紱
- 瀹氫箟锛欱eanDefinition锛屽彲鑳借繖鏄綘鍦ㄦ煡闃?Spring 婧愮爜鏃剁粡甯哥湅鍒扮殑涓€涓被锛屼緥濡傚畠浼氬寘鎷?singleton銆乸rototype銆丅eanClassName 绛夈€備絾鐩墠鎴戜滑鍒濇瀹炵幇浼氭洿鍔犵畝鍗曠殑澶勭悊锛屽彧瀹氫箟涓€涓?Object 绫诲瀷鐢ㄤ簬瀛樻斁瀵硅薄銆?/li>
- 娉ㄥ唽锛氳繖涓繃绋嬪氨鐩稿綋浜庢垜浠妸鏁版嵁瀛樻斁鍒?HashMap 涓紝鍙笉杩囩幇鍦?HashMap 瀛樻斁鐨勬槸瀹氫箟浜嗙殑 Bean 鐨勫璞′俊鎭€?/li>
- 鑾峰彇锛氭渶鍚庡氨鏄幏鍙栧璞★紝Bean 鐨勫悕瀛楀氨鏄痥ey锛孲pring 瀹瑰櫒鍒濆鍖栧ソ Bean 浠ュ悗锛屽氨鍙互鐩存帴鑾峰彇浜嗐€?/li>
2. 杩愮敤璁捐妯″紡锛屽疄鐜?Bean 鐨勫畾涔夈€佹敞鍐屻€佽幏鍙?/h3>
灏?Spring Bean 瀹瑰櫒瀹屽杽璧锋潵锛岄鍏堥潪甯搁噸瑕佺殑涓€鐐规槸鍦?Bean 娉ㄥ唽鐨勬椂鍊欏彧娉ㄥ唽涓€涓被淇℃伅锛岃€屼笉浼氱洿鎺ユ妸瀹炰緥鍖栦俊鎭敞鍐屽埌 Spring 瀹瑰櫒涓€傞偅涔堝氨闇€瑕佷慨鏀?BeanDefinition 涓殑灞炴€?Object 涓?Class锛屾帴涓嬫潵鍦ㄩ渶瑕佸仛鐨勫氨鏄湪鑾峰彇 Bean 瀵硅薄鏃堕渶瑕佸鐞?Bean 瀵硅薄鐨勫疄渚嬪寲鎿嶄綔浠ュ強鍒ゆ柇褰撳墠鍗曚緥瀵硅薄鍦ㄥ鍣ㄤ腑鏄惁宸茬粡缂撳瓨璧锋潵浜嗐€傛暣浣撹璁″鍥?3-1
- 棣栧厛鎴戜滑闇€瑕佸畾涔?BeanFactory 杩欐牱涓€涓?Bean 宸ュ巶锛屾彁渚?Bean 鐨勮幏鍙栨柟娉?
getBean(String name)锛屼箣鍚庤繖涓?Bean 宸ュ巶鎺ュ彛鐢辨娊璞＄被 AbstractBeanFactory 瀹炵幇銆傝繖鏍蜂娇鐢?a href="https://link.segmentfault.com/?url=https%3A%2F%2Fbugstack.cn%2Fitstack-demo-design%2F2020%2F07%2F07%2F%25E9%2587%258D%25E5%25AD%25A6-Java-%25E8%25AE%25BE%25E8%25AE%25A1%25E6%25A8%25A1%25E5%25BC%258F-%25E5%25AE%259E%25E6%2588%2598%25E6%25A8%25A1%25E6%259D%25BF%25E6%25A8%25A1%25E5%25BC%258F.html" rel="nofollow">妯℃澘妯″紡鐨勮璁℃柟寮忥紝鍙互缁熶竴鏀跺彛閫氱敤鏍稿績鏂规硶鐨勮皟鐢ㄩ€昏緫鍜屾爣鍑嗗畾涔夛紝涔熷氨寰堝ソ鐨勬帶鍒朵簡鍚庣画鐨勫疄鐜拌€呬笉鐢ㄥ叧蹇冭皟鐢ㄩ€昏緫锛屾寜鐓х粺涓€鏂瑰紡鎵ц銆傞偅涔堢被鐨勭户鎵胯€呭彧闇€瑕佸叧蹇冨叿浣撴柟娉曠殑閫昏緫瀹炵幇鍗冲彲銆?/li>- 閭ｄ箞鍦ㄧ户鎵挎娊璞＄被 AbstractBeanFactory 鍚庣殑 AbstractAutowireCapableBeanFactory 灏卞彲浠ュ疄鐜扮浉搴旂殑鎶借薄鏂规硶浜嗭紝鍥犱负 AbstractAutowireCapableBeanFactory 鏈韩涔熸槸涓€涓娊璞＄被锛屾墍浠ュ畠鍙細瀹炵幇灞炰簬鑷繁鐨勬娊璞℃柟娉曪紝鍏朵粬鎶借薄鏂规硶鐢辩户鎵?AbstractAutowireCapableBeanFactory 鐨勭被瀹炵幇銆傝繖閲屽氨浣撶幇浜嗙被瀹炵幇杩囩▼涓殑鍚勫徃鍏惰亴锛屼綘鍙渶瑕佸叧蹇冨睘浜庝綘鐨勫唴瀹癸紝涓嶆槸浣犵殑鍐呭锛屼笉瑕佸弬涓庛€?/li>
- 鍙﹀杩欓噷杩樻湁鍧楅潪甯搁噸瑕佺殑鐭ヨ瘑鐐癸紝灏辨槸鍏充簬鍗曚緥 SingletonBeanRegistry 鐨勬帴鍙ｅ畾涔夊疄鐜帮紝鑰?DefaultSingletonBeanRegistry 瀵规帴鍙ｅ疄鐜板悗锛屼細琚娊璞＄被 AbstractBeanFactory 缁ф壙銆傜幇鍦?AbstractBeanFactory 灏辨槸涓€涓潪甯稿畬鏁翠笖寮哄ぇ鐨勬娊璞＄被浜嗭紝涔熻兘闈炲父濂界殑浣撶幇鍑哄畠瀵规ā鏉挎ā寮忕殑鎶借薄瀹氫箟銆?/li>
3. 鍩轰簬Cglib瀹炵幇鍚瀯閫犲嚱鏁扮殑绫诲疄渚嬪寲绛栫暐
濉钩杩欎釜鍧戠殑鎶€鏈璁′富瑕佽€冭檻涓ら儴鍒嗭紝涓€涓槸涓叉祦绋嬩粠鍝悎鐞嗙殑鎶婃瀯閫犲嚱鏁扮殑鍏ュ弬淇℃伅浼犻€掑埌瀹炰緥鍖栨搷浣滈噷锛屽彟澶栦竴涓槸鎬庝箞鍘诲疄渚嬪寲鍚湁鏋勯€犲嚱鏁扮殑瀵硅薄銆?/p>
- 鍙傝€?Spring Bean 瀹瑰櫒婧愮爜鐨勫疄鐜版柟寮忥紝鍦?BeanFactory 涓坊鍔?
Object getBean(String name, Object... args)鎺ュ彛锛岃繖鏍峰氨鍙互鍦ㄨ幏鍙?Bean 鏃舵妸鏋勯€犲嚱鏁扮殑鍏ュ弬淇℃伅浼犻€掕繘鍘讳簡銆?/li>- 鍙﹀涓€涓牳蹇冪殑鍐呭鏄娇鐢ㄤ粈涔堟柟寮忔潵鍒涘缓鍚湁鏋勯€犲嚱鏁扮殑 Bean 瀵硅薄鍛紵杩欓噷鏈変袱绉嶆柟寮忓彲浠ラ€夋嫨锛屼竴涓槸鍩轰簬 Java 鏈韩鑷甫鐨勬柟娉?
DeclaredConstructor锛屽彟澶栦竴涓槸浣跨敤 Cglib 鏉ュ姩鎬佸垱寤?Bean 瀵硅薄銆?em>Cglib 鏄熀浜庡瓧鑺傜爜妗嗘灦 ASM 瀹炵幇锛屾墍浠ヤ綘涔熷彲浠ョ洿鎺ラ€氳繃 ASM 鎿嶄綔鎸囦护鐮佹潵鍒涘缓瀵硅薄4. 涓築ean瀵硅薄娉ㄥ叆灞炴€у拰渚濊禆Bean鐨勫姛鑳藉疄鐜?/h3>
閴翠簬灞炴€у～鍏呮槸鍦?Bean 浣跨敤
newInstance鎴栬€?Cglib鍒涘缓鍚庯紝寮€濮嬭ˉ鍏ㄥ睘鎬т俊鎭紝閭ｄ箞灏卞彲浠ュ湪绫?AbstractAutowireCapableBeanFactory鐨?createBean 鏂规硶涓坊鍔犺ˉ鍏ㄥ睘鎬ф柟娉曘€?em>杩欓儴鍒嗗ぇ瀹跺湪瀹炰範鐨勮繃绋嬩腑涔熷彲浠ュ鐓pring婧愮爜瀛︿範锛岃繖閲岀殑瀹炵幇涔熸槸Spring鐨勭畝鍖栫増锛屽悗缁鐓у涔犱細鏇村姞鏄撲簬鐞嗚В
- 灞炴€у～鍏呰鍦ㄧ被瀹炰緥鍖栧垱寤轰箣鍚庯紝涔熷氨鏄渶瑕佸湪
AbstractAutowireCapableBeanFactory鐨?createBean 鏂规硶涓坊鍔?applyPropertyValues鎿嶄綔銆?/li>- 鐢变簬鎴戜滑闇€瑕佸湪鍒涘缓Bean鏃跺€欏～鍏呭睘鎬ф搷浣滐紝閭ｄ箞灏遍渶瑕佸湪 bean 瀹氫箟 BeanDefinition 绫讳腑锛屾坊鍔?PropertyValues 淇℃伅銆?/li>
- 鍙﹀鏄～鍏呭睘鎬т俊鎭繕鍖呮嫭浜?Bean 鐨勫璞＄被鍨嬶紝涔熷氨鏄渶瑕佸啀瀹氫箟涓€涓?BeanReference锛岄噷闈㈠叾瀹炲氨鏄竴涓畝鍗曠殑 Bean 鍚嶇О锛屽湪鍏蜂綋鐨勫疄渚嬪寲鎿嶄綔鏃惰繘琛岄€掑綊鍒涘缓鍜屽～鍏咃紝涓?Spring 婧愮爜瀹炵幇涓€鏍枫€?em>Spring 婧愮爜涓?BeanReference 鏄竴涓帴鍙?/em>
5. 璁捐涓庡疄鐜拌祫婧愬姞杞藉櫒锛屼粠Spring.xml瑙ｆ瀽鍜屾敞鍐孊ean瀵硅薄
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- 璧勬簮鍔犺浇鍣ㄥ睘浜庣浉瀵圭嫭绔嬬殑閮ㄥ垎锛屽畠浣嶄簬 Spring 妗嗘灦鏍稿績鍖呬笅鐨処O瀹炵幇鍐呭锛屼富瑕佺敤浜庡鐞咰lass銆佹湰鍦板拰浜戠幆澧冧腑鐨勬枃浠朵俊鎭€?/li>
- 褰撹祫婧愬彲浠ュ姞杞藉悗锛屾帴涓嬫潵灏辨槸瑙ｆ瀽鍜屾敞鍐?Bean 鍒?Spring 涓殑鎿嶄綔锛岃繖閮ㄥ垎瀹炵幇闇€瑕佸拰 DefaultListableBeanFactory 鏍稿績绫荤粨鍚堣捣鏉ワ紝鍥犱负浣犳墍鏈夌殑瑙ｆ瀽鍚庣殑娉ㄥ唽鍔ㄤ綔锛岄兘浼氭妸 Bean 瀹氫箟淇℃伅鏀惧叆鍒拌繖涓被涓€?/li>
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BeanDefinitionReader浠ュ強鍋氬ソ瀵瑰簲鐨勫疄鐜扮被锛屽湪瀹炵幇绫讳腑瀹屾垚瀵?Bean 瀵硅薄鐨勮В鏋愬拰娉ㄥ唽銆?/li>6. 璁捐涓庡疄鐜拌祫婧愬姞杞藉櫒锛屼粠Spring.xml瑙ｆ瀽鍜屾敞鍐孊ean瀵硅薄
涓轰簡鑳芥弧瓒充簬鍦?Bean 瀵硅薄浠庢敞鍐屽埌瀹炰緥鍖栫殑杩囩▼涓墽琛岀敤鎴风殑鑷畾涔夋搷浣滐紝灏遍渶瑕佸湪 Bean 鐨勫畾涔夊拰鍒濆鍖栬繃绋嬩腑鎻掑叆鎺ュ彛绫伙紝杩欎釜鎺ュ彛鍐嶆湁澶栭儴鍘诲疄鐜拌嚜宸遍渶瑕佺殑鏈嶅姟銆傞偅涔堝湪缁撳悎瀵?Spring 妗嗘灦涓婁笅鏂囩殑澶勭悊鑳藉姏锛屽氨鍙互婊¤冻鎴戜滑鐨勭洰鏍囬渶姹備簡銆傛暣浣撹璁＄粨鏋勫涓嬪浘锛?/p>
- 婊¤冻浜庡 Bean 瀵硅薄鎵╁睍鐨勪袱涓帴鍙ｏ紝鍏跺疄涔熸槸 Spring 妗嗘灦涓潪甯稿叿鏈夐噸閲忕骇鐨勪袱涓帴鍙ｏ細
BeanFactoryPostProcess鍜?BeanPostProcessor锛屼篃鍑犱箮鏄ぇ瀹跺湪浣跨敤 Spring 妗嗘灦棰濆鏂板寮€鍙戣嚜宸辩粍寤洪渶姹傜殑涓や釜蹇呭鎺ュ彛銆?/li>- BeanFactoryPostProcessor锛屾槸鐢?Spring 妗嗘灦缁勫缓鎻愪緵鐨勫鍣ㄦ墿灞曟満鍒讹紝鍏佽鍦?Bean 瀵硅薄娉ㄥ唽鍚庝絾鏈疄渚嬪寲涔嬪墠锛屽 Bean 鐨勫畾涔変俊鎭?
BeanDefinition鎵ц淇敼鎿嶄綔銆?/li>- BeanPostProcessor锛屼篃鏄?Spring 鎻愪緵鐨勬墿灞曟満鍒讹紝涓嶈繃 BeanPostProcessor 鏄湪 Bean 瀵硅薄瀹炰緥鍖栦箣鍚庝慨鏀?Bean 瀵硅薄锛屼篃鍙互鏇挎崲 Bean 瀵硅薄銆傝繖閮ㄥ垎涓庡悗闈㈣瀹炵幇鐨?AOP 鏈夌潃瀵嗗垏鐨勫叧绯汇€?/li>
- 鍚屾椂濡傛灉鍙槸娣诲姞杩欎袱涓帴鍙ｏ紝涓嶅仛浠讳綍鍖呰锛岄偅涔堝浜庝娇鐢ㄨ€呮潵璇磋繕鏄潪甯搁夯鐑︾殑銆傛垜浠笇鏈涗簬寮€鍙?Spring 鐨勪笂涓嬫枃鎿嶄綔绫伙紝鎶婄浉搴旂殑 XML 鍔犺浇 銆佹敞鍐屻€佸疄渚嬪寲浠ュ強鏂板鐨勪慨鏀瑰拰鎵╁睍閮借瀺鍚堣繘鍘伙紝璁?Spring 鍙互鑷姩鎵弿鍒版垜浠殑鏂板鏈嶅姟锛屼究浜庣敤鎴蜂娇鐢ㄣ€?/li>
7. 瀹炵幇搴旂敤涓婁笅鏂囷紝鑷姩璇嗗埆銆佽祫婧愬姞杞姐€佹墿灞曟満鍒?/h3>
鍙兘闈㈠鍍?Spring 杩欐牱搴炲ぇ鐨勬鏋讹紝瀵瑰鏆撮湶鐨勬帴鍙ｅ畾涔変娇鐢ㄦ垨鑰厁ml閰嶇疆锛屽畬鎴愮殑涓€绯诲垪鎵╁睍鎬ф搷浣滐紝閮借 Spring 妗嗘灦鐪嬩笂鍘诲緢绁炵銆傚叾瀹炲浜庤繖鏍峰湪 Bean 瀹瑰櫒鍒濆鍖栬繃绋嬩腑棰濆娣诲姞鐨勫鐞嗘搷浣滐紝鏃犻潪灏辨槸棰勫厛鎵ц浜嗕竴涓畾涔夊ソ鐨勬帴鍙ｆ柟娉曟垨鑰呮槸鍙嶅皠璋冪敤绫讳腑xml涓厤缃殑鏂规硶锛屾渶缁堜綘鍙鎸夌収鎺ュ彛瀹氫箟瀹炵幇锛屽氨浼氭湁 Spring 瀹瑰櫒鍦ㄥ鐞嗙殑杩囩▼涓繘琛岃皟鐢ㄨ€屽凡銆傛暣浣撹璁＄粨鏋勫涓嬪浘锛?/p>
- 鍦?spring.xml 閰嶇疆涓坊鍔?
init-method銆乨estroy-method涓や釜娉ㄨВ锛屽湪閰嶇疆鏂囦欢鍔犺浇鐨勮繃绋嬩腑锛屾妸娉ㄨВ閰嶇疆涓€骞跺畾涔夊埌 BeanDefinition 鐨勫睘鎬у綋涓€傝繖鏍峰湪 initializeBean 鍒濆鍖栨搷浣滅殑宸ョ▼涓紝灏卞彲浠ラ€氳繃鍙嶅皠鐨勬柟寮忔潵璋冪敤閰嶇疆鍦?Bean 瀹氫箟灞炴€у綋涓殑鏂规硶淇℃伅浜嗐€傚彟澶栧鏋滄槸鎺ュ彛瀹炵幇鐨勬柟寮忥紝閭ｄ箞鐩存帴鍙互閫氳繃 Bean 瀵硅薄璋冪敤瀵瑰簲鎺ュ彛瀹氫箟鐨勬柟娉曞嵆鍙紝((InitializingBean) bean).afterPropertiesSet()锛屼袱绉嶆柟寮忚揪鍒扮殑鏁堟灉鏄竴鏍风殑銆?/li>- 闄や簡鍦ㄥ垵濮嬪寲鍋氱殑鎿嶄綔澶栵紝
destroy-method鍜?DisposableBean鎺ュ彛鐨勫畾涔夛紝閮戒細鍦?Bean 瀵硅薄鍒濆鍖栧畬鎴愰樁娈碉紝鎵ц娉ㄥ唽閿€姣佹柟娉曠殑淇℃伅鍒?DefaultSingletonBeanRegistry 绫讳腑鐨?disposableBeans 灞炴€ч噷锛岃繖鏄负浜嗗悗缁粺涓€杩涜鎿嶄綔銆?em>杩欓噷杩樻湁涓€娈甸€傞厤鍣ㄧ殑浣跨敤锛屽洜涓哄弽灏勮皟鐢ㄥ拰鎺ュ彛鐩存帴璋冪敤锛屾槸涓ょ鏂瑰紡銆傛墍浠ラ渶瑕佷娇鐢ㄩ€傞厤鍣ㄨ繘琛屽寘瑁咃紝涓嬫枃浠ｇ爜璁茶В涓弬鑰?DisposableBeanAdapter 鐨勫叿浣撳疄鐜?/em>
-鍏充簬閿€姣佹柟娉曢渶瑕佸湪铏氭嫙鏈烘墽琛屽叧闂箣鍓嶈繘琛屾搷浣滐紝鎵€浠ヨ繖閲岄渶瑕佺敤鍒颁竴涓敞鍐岄挬瀛愮殑鎿嶄綔锛屽锛?code>Runtime.getRuntime().addShutdownHook(new Thread(() -> System.out.println("close锛?))); 杩欐浠ｇ爜浣犲彲浠ユ墽琛屾祴璇?/em>锛屽彟澶栦綘鍙互浣跨敤鎵嬪姩璋冪敤 ApplicationContext.close 鏂规硶鍏抽棴瀹瑰櫒銆?/li>8. 鍚戣櫄鎷熸満娉ㄥ唽閽╁瓙锛屽疄鐜癇ean瀵硅薄鐨勫垵濮嬪寲鍜岄攢姣佹柟娉?/h3>
鍙兘闈㈠鍍?Spring 杩欐牱搴炲ぇ鐨勬鏋讹紝瀵瑰鏆撮湶鐨勬帴鍙ｅ畾涔変娇鐢ㄦ垨鑰厁ml閰嶇疆锛屽畬鎴愮殑涓€绯诲垪鎵╁睍鎬ф搷浣滐紝閮借 Spring 妗嗘灦鐪嬩笂鍘诲緢绁炵銆傚叾瀹炲浜庤繖鏍峰湪 Bean 瀹瑰櫒鍒濆鍖栬繃绋嬩腑棰濆娣诲姞鐨勫鐞嗘搷浣滐紝鏃犻潪灏辨槸棰勫厛鎵ц浜嗕竴涓畾涔夊ソ鐨勬帴鍙ｆ柟娉曟垨鑰呮槸鍙嶅皠璋冪敤绫讳腑xml涓厤缃殑鏂规硶锛屾渶缁堜綘鍙鎸夌収鎺ュ彛瀹氫箟瀹炵幇锛屽氨浼氭湁 Spring 瀹瑰櫒鍦ㄥ鐞嗙殑杩囩▼涓繘琛岃皟鐢ㄨ€屽凡銆傛暣浣撹璁＄粨鏋勫涓嬪浘锛?/p>
- 鍦?spring.xml 閰嶇疆涓坊鍔?
init-method銆乨estroy-method涓や釜娉ㄨВ锛屽湪閰嶇疆鏂囦欢鍔犺浇鐨勮繃绋嬩腑锛屾妸娉ㄨВ閰嶇疆涓€骞跺畾涔夊埌 BeanDefinition 鐨勫睘鎬у綋涓€傝繖鏍峰湪 initializeBean 鍒濆鍖栨搷浣滅殑宸ョ▼涓紝灏卞彲浠ラ€氳繃鍙嶅皠鐨勬柟寮忔潵璋冪敤閰嶇疆鍦?Bean 瀹氫箟灞炴€у綋涓殑鏂规硶淇℃伅浜嗐€傚彟澶栧鏋滄槸鎺ュ彛瀹炵幇鐨勬柟寮忥紝閭ｄ箞鐩存帴鍙互閫氳繃 Bean 瀵硅薄璋冪敤瀵瑰簲鎺ュ彛瀹氫箟鐨勬柟娉曞嵆鍙紝((InitializingBean) bean).afterPropertiesSet()锛屼袱绉嶆柟寮忚揪鍒扮殑鏁堟灉鏄竴鏍风殑銆?/li>- 闄や簡鍦ㄥ垵濮嬪寲鍋氱殑鎿嶄綔澶栵紝
destroy-method鍜?DisposableBean鎺ュ彛鐨勫畾涔夛紝閮戒細鍦?Bean 瀵硅薄鍒濆鍖栧畬鎴愰樁娈碉紝鎵ц娉ㄥ唽閿€姣佹柟娉曠殑淇℃伅鍒?DefaultSingletonBeanRegistry 绫讳腑鐨?disposableBeans 灞炴€ч噷锛岃繖鏄负浜嗗悗缁粺涓€杩涜鎿嶄綔銆?em>杩欓噷杩樻湁涓€娈甸€傞厤鍣ㄧ殑浣跨敤锛屽洜涓哄弽灏勮皟鐢ㄥ拰鎺ュ彛鐩存帴璋冪敤锛屾槸涓ょ鏂瑰紡銆傛墍浠ラ渶瑕佷娇鐢ㄩ€傞厤鍣ㄨ繘琛屽寘瑁咃紝涓嬫枃浠ｇ爜璁茶В涓弬鑰?DisposableBeanAdapter 鐨勫叿浣撳疄鐜?/em>
-鍏充簬閿€姣佹柟娉曢渶瑕佸湪铏氭嫙鏈烘墽琛屽叧闂箣鍓嶈繘琛屾搷浣滐紝鎵€浠ヨ繖閲岄渶瑕佺敤鍒颁竴涓敞鍐岄挬瀛愮殑鎿嶄綔锛屽锛?code>Runtime.getRuntime().addShutdownHook(new Thread(() -> System.out.println("close锛?))); 杩欐浠ｇ爜浣犲彲浠ユ墽琛屾祴璇?/em>锛屽彟澶栦綘鍙互浣跨敤鎵嬪姩璋冪敤 ApplicationContext.close 鏂规硶鍏抽棴瀹瑰櫒銆?/li>9. 瀹氫箟鏍囪绫诲瀷Aware鎺ュ彛锛屽疄鐜版劅鐭ュ鍣ㄥ璞?/h3>
濡傛灉璇存垜甯屾湜鎷垮埌 Spring 妗嗘灦涓竴浜涙彁渚涚殑璧勬簮锛岄偅涔堥鍏堥渶瑕佽€冭檻浠ヤ竴涓粈涔堟柟寮忓幓鑾峰彇锛屼箣鍚庝綘瀹氫箟鍑烘潵鐨勮幏鍙栨柟寮忥紝鍦?Spring 妗嗘灦涓鎬庝箞鍘绘壙鎺ワ紝瀹炵幇浜嗚繖涓ら」鍐呭锛屽氨鍙互鎵╁睍鍑轰綘闇€瑕佺殑涓€浜涘睘浜?Spring 妗嗘灦鏈韩鐨勮兘鍔涗簡銆?/p>
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instanceof杩涜鍒ゆ柇鍜岃皟鐢ㄤ簡銆傛暣浣撹璁＄粨鏋勫涓嬪浘锛?/p>
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- 缁ф壙 Aware 鐨勬帴鍙ｅ寘鎷細BeanFactoryAware銆丅eanClassLoaderAware銆丅eanNameAware鍜孉pplicationContextAware锛屽綋鐒跺湪 Spring 婧愮爜涓繕鏈変竴浜涘叾浠栧叧浜庢敞瑙ｇ殑锛屼笉杩囩洰鍓嶆垜浠繕鏄敤涓嶅埌銆?/li>
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