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JVM系列(六)吊死面试官:为什么finalize()方法只执行一次?

时间:2023-04-02 09:29:12 Java

璇风偣璧炲叧娉紝浣犱滑鐨勬敮鎸佸鎴戞潵璇存剰涔夐噸澶с€傪煍ュぇ瀹跺ソ锛屾垜鏄皬楣忋€傛湰鏂囧凡鏀跺綍浜嶨itHub路AndroidFamily銆傝繖閲屾湁涓€濂桝ndroid杩涢樁鎴愰暱鐭ヨ瘑浣撶郴锛屽織鍚岄亾鍚堢殑灏忎紮浼翠滑锛屽叧娉ㄥ叕浼楀彿銆愬江鏃澘銆戯紝鍔╀綘鎵撻€犳牳蹇冪珵浜夊姏銆傚墠瑷€Java鐨凢inalizer鏈哄埗鎻愪緵浜嗕竴涓湪瀵硅薄琚洖鏀跺墠閲婃斁鍗犵敤璧勬簮鐨勬満浼氾紝浣嗘槸鎹Finalizer鏈哄埗涓嶇ǔ瀹氫笖鍗遍櫓锛屼笉鎺ㄨ崘浣跨敤銆備负浠€涔堟槸杩欐牱锛熶粖澶╄鎴戜滑鏇存繁鍏ュ湴鎺㈣杩欎釜闂銆傚涔犺矾绾垮浘锛?.鐞嗚ВFinalizer鏈哄埗1.1涓轰粈涔堣浣跨敤Finalizer鏈哄埗锛烰ava鐨凢inalizer鏈哄埗鐨勪綔鐢ㄦ湁鐐圭被浼间簬C/C++鐨勬瀽鏋勫嚱鏁般€傚綋涓€涓璞$殑鐢熷懡鍛ㄦ湡鍗冲皢缁撴潫锛屼篃灏辨槸鍦ㄨ鍨冨溇鍥炴敹鍣ㄥ洖鏀朵箣鍓嶏紝铏氭嫙鏈轰細璋冪敤璇ュ璞$殑finalize()鏂规硶锛屼粠鑰屾彁渚涢噴鏀捐祫婧愮殑鏈轰細銆?.2Finalizer瀛樺湪鐨勯棶棰樿櫧鐒禞avaFinalizer鏈哄埗鐨勪綔鐢ㄤ笌C/C++鐨勬瀽鏋勫嚱鏁扮浉浼硷紝浣嗕袱鑰呯殑瀹氫綅涓嶅悓銆侰/C++鐨勬瀽鏋勫嚱鏁版槸鍥炴敹瀵硅薄璧勬簮鐨勬甯告柟寮忥紝涓庢瀯閫犲嚱鏁颁竴涓€瀵瑰簲锛岃€孞ava鐨凢inalizer鏈哄埗涓嶇ǔ瀹氬嵄闄╋紝涓嶆帹鑽愪娇鐢紝鍥犱负Finalizer鏈哄埗瀛樺湪浠ヤ笅涓変釜闂锛氶棶棰?-Finalizer鏈哄埗鐨勬墽琛屾椂鏈轰笉鍙婃椂锛氱敱浜庢墽琛孎inalizer鏈哄埗鐨勭嚎绋嬫槸瀹堟姢绾跨▼锛屽叾鎵ц浼樺厛绾т綆浜庣敤鎴风嚎绋嬶紝鎵€浠ュ綋涓€涓璞″彉寰椾笉鍙揪鏃讹紝涓嶈兘淇濊瘉鏄強鏃舵墽琛宖inalize()鏂规硶銆傚洜姝わ紝褰撳ぇ閲忎笉鍙揪瀵硅薄鐨凢inalizer鏈哄埗娌℃湁鍙婃椂鎵ц鏃讹紝鍙兘浼氬鑷村ぇ閲忚祫婧愭潵涓嶅強閲婃斁锛屾渶缁堣€楀敖璧勬簮锛涢棶棰?鈥斺€擣inalizer鏈哄埗涓嶄繚璇佹墽琛岋細闄や簡鎵ц鏃舵満涓嶇ǔ瀹氬锛孎inalizer鏈哄埗鐢氳嚦涓嶈兘淇濊瘉涓€瀹氫細鎵ц銆傚綋绋嬪簭缁撴潫鏃讹紝閽堝涓嶅彲杈惧璞$殑Finalizer鏈哄埗鍙兘杩樻病鏈夎繍琛屻€傚亣璁剧▼搴忎緷璧朏inalizer鏈哄埗鏉ユ洿鏂版寔涔呭寲鐘舵€侊紝姣斿閲婃斁鏁版嵁搴撶殑閿侊紝鍙兘浼氬鑷存暣涓垎甯冨紡绯荤粺闄峰叆姝婚攣锛涢棶棰?鈥斺€擣inalizer鏈哄埗鍙細鎵ц涓€娆★細濡傛灉鍦╢inalize()鏂规硶涓笉鍙揪瀵硅薄琚噸鏂板惎鐢ㄤ负鍙揪瀵硅薄锛屼笅娆″彉涓轰笉鍙揪鍚庝笉浼氬啀鎵цfinalize()鏂规硶銆傝繖涓嶧inalizer鏈哄埗鐨勫疄鐜板師鐞嗘湁鍏炽€傚悗闈㈡垜浠細娣卞叆铏氭嫙鏈虹殑婧愮爜锛屼粠婧愮爜灞傞潰鍘荤悊瑙c€?.3浠€涔堟椂鍊欎娇鐢‵inalizer鏈哄埗锛熺敱浜嶧inalizer鏈哄埗鐨勪笉绋冲畾鎬э紝涓嶅簲灏咶inalizer鏈哄埗浣滀负閲婃斁璧勬簮鐨勪富瑕佺瓥鐣ワ紝鑰屽簲浣滀负鑷笅鑰屼笂鐨勮祫婧愰噴鏀剧瓥鐣ャ€傜▼搴忓簲璇ュ湪璧勬簮涓嶇敤鐨勬椂鍊欎富鍔ㄩ噴鏀撅紝鎴栬€呭疄鐜癆utoCloseable鎺ュ彛锛屼娇鐢╰ry-with-resources璇硶锛屼繚璇佸湪鍑虹幇寮傚父鏃惰祫婧愪粛鐒惰閲婃斁銆侳inalizer鏈哄埗鏄竴绉嶅簳绾跨瓥鐣ワ紝铏界劧涓嶇ǔ瀹氾紝浣嗘€绘瘮蹇樿閲婃斁璧勬簮濂姐€備絾鏄疐inalizer鏈哄埗宸茬粡琚爣璁颁负杩囨椂锛屼娇鐢–leaner鏈哄埗浣滀负閲婃斁璧勬簮锛堟湰璐ㄤ笂鏄疨hantomReference骞昏薄寮曠敤锛夌殑鍚庡绛栫暐鏄竴涓浉瀵规洿濂界殑閫夋嫨銆傚敖绠leaner鏈哄埗瀛樺湪鍚屾牱鐨勪笉绋冲畾鎬э紝浣嗗畠閫氬父姣擣inalizer鏈哄埗瑕佸ソ銆備簩銆丗inalizer鏈哄埗鍘熺悊鍒嗘瀽浠庢湰鑺傚紑濮嬶紝鎴戜滑灏嗘繁鍏ュ垎鏋怞avaFinalizer鏈哄埗鐨勫疄鐜板師鐞嗐€傜浉鍏虫簮鐮佸熀浜嶢ndroid9.0ART铏氭嫙鏈恒€?.1寮曠敤瀹炵幇鍘熺悊鍥為【鍦ㄤ笂涓€绡囨枃绔犱腑锛屾垜浠垎鏋愪簡Java寮曠敤绫诲瀷鐨勫疄鐜板師鐞嗭紝Java鐨凢inalizer鏈哄埗涔熸槸鍏朵腑鐨勪竴鐜€傛垜浠厛绠€鍗曞洖椤句竴涓嬫暣涓繃绋嬨€?.2鍒涘缓FinalizerReference寮曠敤瀵硅薄鎴戜滑閮界煡閬揓ava鏈夊洓绉嶄富瑕佺殑寮曠敤绫诲瀷銆傚彟澶栵紝铏氭嫙鏈鸿繕璁捐浜咢hideFinalizerReference绫诲瀷鏉ユ敮鎸丗inalizer鏈哄埗銆俁eference寮曠敤瀵硅薄鏄竴涓璞″寘瑁呯被锛屾棬鍦ㄥ疄鐜版洿鐏垫椿鐨勫璞$敓鍛藉懆鏈熺鐞嗐€侳inalizer鏈哄埗涔熷叧绯诲埌瀵硅薄鐨勭敓鍛藉懆鏈燂紝鎵€浠ユ湁杩欐牱鐨勨€滅浜旂寮曠敤绫诲瀷鈥濇棤鍙帤闈炪€傚湪铏氭嫙鏈哄姞杞界被鐨勮繃绋嬩腑锛岄噸鍐橭bject#finalize()鏂规硶鐨勭被鍨嬪皢琚爣璁颁负鍙粓缁撶被鍨嬨€傛瘡娆″垱寤烘爣璁颁负finalizable鐨勫璞℃椂锛岄兘浼氬湪铏氭嫙鏈哄唴閮ㄥ垱寤轰竴涓叧鑱旂殑FinalizerReference寮曠敤瀵硅薄锛屽苟鏆傚瓨鍦ㄤ竴涓叏灞€閾捐〃涓紙濡傛灉娌℃湁鍏ㄥ眬鍙橀噺锛屾病鏈夊己寮曠敤鎸佹湁FinalizerReference鏈韩浼氳鍥炴敹鐩存帴鍦ㄤ笅涓€涓狦C涓級銆俬eap.ccvoidHeap::AddFinalizerReference(Thread*self,ObjPtr*object){ScopedObjectAccesssoa(self);ScopedLocalRefarg(self->GetJniEnv(),soa.AddLocalReference(*object));jvalueargs[1];args[0].l=arg.get();//璋冪敤Java灞傞潤鎬佹柟娉旻inalizerReference#addInvokeWithJValues(soa,nullptr,WellKnownClasses::java_lang_ref_FinalizerReference_add,args);*object=soa.Decode(arg.get());}FinalizerReference.java//鍏宠仈寮曠敤闃熷垪publicstaticfinalReferenceQueuequeue=newReferenceQueue();//鍏ㄥ眬閾炬帴listheadpointer锛堜娇鐢ㄥ弻鍚戦摼琛ㄥ瓨鏀綟inalizerReference锛屽惁鍒欏紩鐢ㄥ璞℃湰韬鏋滄病鏈夊己寮曠敤浼氱洿鎺ヨ鍥炴敹锛塸rivatestaticFinalizerReferencehead=null;privateFinalizerReferenceprev;privateFinalizerReferencenext;//浠嶯ative灞傝皟鐢╬ublicstaticvoidadd(Objectreferent){//鍒涘缓FinalizerReference寮曠敤瀵硅薄骞跺叧鑱斿紩鐢ㄩ槦鍒桭inalizerReferencereference=newFinalizerReference鍙傝€?瀵硅薄>锛堟寚绉帮紝闃熷垪锛夛紱synchronized(LIST_LOCK){//澶撮儴鎻掑叆娉曞姞鍏ュ叏灞€鍗曢摼琛╮eference.prev=null;reference.next=head;if(head!=null){head.prev=鍙傝€冿紱}澶?鍙傝€冿紱}}publicstaticvoidremove(FinalizerReferencereference){//浠庡弻鍚戦摼琛ㄤ腑绉婚櫎锛屼唬鐮佺渷鐣2.3finalize()鏂规硶鍦ㄥ摢閲屾墽琛岋紵鏍规嵁鎴戜滑瀵瑰紩鐢ㄩ槦鍒楃殑鐞嗚В锛屽綋鎴戜滑鍦ㄥ垱寤哄紩鐢ㄥ璞℃椂鍏宠仈寮曠敤闃熷垪锛屽氨鍙互瀹炵幇鎰熺煡瀵硅薄鍥炴敹鏃舵満鐨勫姛鑳姐€傚綋寮曠敤鎸囧悜鐨勫疄闄呭璞¤鍨冨溇鍥炴敹鏃讹紝寮曠敤瀵硅薄灏嗚娣诲姞鍒板紩鐢ㄩ槦鍒椾腑銆傞偅涔堬紝璋佸湪娑堣垂杩欎釜寮曠敤闃熷垪鍛紵褰撹櫄鎷熸満鍚姩鏃讹紝浼氬惎鍔ㄤ竴绯诲垪瀹堟姢绾跨▼锛屽寘鎷鐞嗗紩鐢ㄥ叆闃熷垪鐨凴eferenceQueueDaemon绾跨▼锛屼互鍙婃墽琛孎inalizer鏈哄埗鐨凢inalizerDaemon绾跨▼銆侳inalizerDaemon绾跨▼杞寮曠敤闃熷垪骞跺瀹為檯瀵硅薄鎵цfinalize()鏂规硶銆傛彁绀猴細FinalizerDaemon鏄竴涓畧鎶ょ嚎绋嬶紝鎵€浠inalize()鐨勬墽琛屼紭鍏堢骇杈冧綆銆侱aemons.javapublicstaticvoidstart(){//鍚姩鍥涗釜瀹堟姢绾跨▼ReferenceQueueDaemon.INSTANCE.start();FinalizerDaemon.INSTANCE.start();FinalizerWatchdogDaemon.INSTANCE.start();HeapTaskDaemon.INSTANCE.start();}//绠€鍖杙rivatestaticclassFinalizerDaemonextendsDaemon{privatestaticfinalFinalizerDaemonINSTANCE=newFinalizerDaemon();//杩欎釜闃熷垪鏄笌FinalizerReference鍏宠仈鐨勫紩鐢ㄩ槦鍒梡rivatefinalReferenceQueuequeue=FinalizerReference.queue;FinalizerDaperemon("superemon("superemon)FinalizerDaemon");}@OverridepublicvoidrunInternal(){while(isRunning()){//1.浠庡紩鐢ㄩ槦鍒椾腑鍙栧嚭寮曠敤FinalizerReferencefinalizingReference=(FinalizerReference)queue.poll();//2.鎵ц寮曠敤Object#finalize()doFinalize(finalizingReference);//Tips:poll()鏄潪闃诲鐨勶紝FinalizerDaemon閰嶅悎FinalizerWatchDogDaemon瀹炵幇绛夊緟鍞ら啋鏈哄埗}@FindBugsSuppressWarnings("FI_EXPLICIT_INVOCATION")privatevoiddoFinalize(FinalizerReferencereference){//2.1绉婚櫎FinalizerReference瀵硅薄FinalizerReference.remove(reference);//2.2鍙栧嚭寮曠敤鎸囧悜鐨勫璞★紙闅句互缃俊锛屼负浠€涔堜笉鏄┖鐨勶紵锛塐bjectobject=reference.get();//2.3瑙i櫎鍏宠仈鍏崇郴reference.clear();//2.4璋冪敤Object#finalize()object.finalize();}}浣犲彂鐜拌繖閲屾湁浠€涔堥棶棰樺悧锛屾櫘閫氬紩鐢ㄥ璞¤繘鍏eference鎺掗槦鐨勬椂鍊欙紝铏氭嫙鏈哄凡缁忚В闄や簡寮曠敤瀵硅薄鍜屽疄闄呭璞$殑鍏宠仈锛屾鏃惰皟鐢≧eference#get()搴旇杩斿洖null锛屼絾鏄疐inalizerReference#get()浠嶇劧鍙互鎷垮埌瀹為檯瀵硅薄锛岃闂疄闄呭璞℃槸鍚﹁鍥炴敹浜嗭紵!?杩欎釜鍙兘鍦ㄦ簮鐮佷腑鎵惧埌2.4FinalizerReference寮曠敤瀵硅薄鐨凟nqueue杩囩▼鐢变簬鏍囪涓篺inalizable鐨勫璞″湪琚洖鏀朵箣鍓嶉渶瑕佽皟鐢╢inalize()鏂规硶锛屾墍浠ヨ繖绫诲璞$殑鍥炴敹杩囩▼姣旇緝鐗规畩锛屽畠浼氱粡鍘嗕袱娆econdGC杩囩▼銆傛垜鎶婃暣涓繃绋嬫€荤粨涓?涓樁娈碉細Phase1鈥斺€旂涓€涓狦C杩囩▼锛氬綋鍨冨溇鏀堕泦鍣ㄥ彂鐜板璞″彉寰椾笉鍙揪鏃讹紝灏变細瑙i櫎瀹為檯瀵硅薄鍜屽紩鐢ㄥ璞′箣闂寸殑缁戝畾鍏崇郴銆傚綋瀹為檯瀵硅薄琚竻闄ゅ悗锛屽紩鐢ㄥ璞′細琚坊鍔犲埌鍏宠仈鐨勫紩鐢ㄩ槦鍒椾腑锛堟垜浠湪涓婁竴绡囨枃绔犱腑鍒嗘瀽杩囪繖閮ㄥ垎锛夈€備絾鏄痜inalizable瀵硅薄杩樻槸闇€瑕佽皟鐢╢inalize()鏂规硶锛屾墍浠ョ涓€娆C鏃跺苟涓嶈兘鍥炴敹瀹為檯瀵硅薄銆傚洜姝わ紝鍨冨溇鍥炴敹鍣ㄤ細涓诲姩灏嗕笉鍙揪鐨勫疄闄呭璞¢噸鏂版爣璁颁负鍙揪瀵硅薄锛屼娇鍏跺厤浜庢湰娆″瀮鍦惧洖鏀讹紝骞跺皢瀹為檯瀵硅薄鏆傛椂淇濆瓨鍒癋inalizerReference鐨剒ombie瀛楁涓€傚疄闄呭璞′笌FinalizerReference鐨勫叧绯昏繕鏄細琚噴鏀撅紝鍚﹀垯浼氶櫡鍏ユ寰幆锛屾案杩滄棤娉曞洖鏀讹紱Phase2-FinalizerDaemon鎵цfinalize()鏂规硶锛氬綋FinalizerDaemon瀹堟姢绾跨▼娑堣垂寮曠敤闃熷垪鏃讹紝璋冪敤ReferenceQueue#get()鍙槸杩斿洖鏆傚瓨鐨剒ombie瀛楁鑰屽凡锛屽叾瀹炲叧鑱斿叧绯诲凡缁忔湁浜嗘鏃惰缁堟锛堣繖灏辨槸涓轰粈涔團inalizerReference#get()涔熻兘鎷垮埌瀹為檯鐨勫璞★級銆侾hase3-SecondaryGC锛氱敱浜庡疄闄呭璞′笌FinalizerReference涓嶅啀鍏宠仈锛屾墍浠ョ浜屾鍥炴敹杩囩▼涓庢櫘閫氬璞$浉鍚屻€傚墠鎻愭槸瀹為檯瀵硅薄鍦╢inalize()涓啀娆″彉涓簉eachable锛岄偅涔坰econdaryGC灏变笉浼氶偅涔堝揩鎵ц浜嗭紝寰楃瓑鍒板畠鍐嶆鍙樹负unreachable銆傛彁绀猴細杩欏氨鏄负浠€涔坒inalize()鏂规硶鍙細鎵ц涓€娆$殑鍘熷洜锛屽洜涓哄湪鎵цfinalize()鏃讹紝瀹為檯瀵硅薄鍜孎inalizerReference宸茬粡瑙i櫎浜嗗叧鑱旓紝鍚庣画鐨勫瀮鍦惧洖鏀跺氨鍜屾櫘閫氱殑闈瀎inalizable瀵硅薄涓€鏍蜂簡銆傛簮鐮佹€荤粨濡備笅锛氬瀮鍦炬敹闆嗗櫒娓呯悊娴佺▼锛氭柟娉曡皟鐢ㄩ摼锛歊eclaimPhase鈫扨rocessReferences鈫扲eferenceProcessor::ProcessReferences鈫扲eferenceQueue::EnqueueFinalizerReferencesreference_queue.ccvoidReferenceQueue::EnqueueFinalizerReferences(ReferenceQueue*cleared_references,collector::GarbageCollector*co()){ObjPtrref=DequeuePendingReference()->AsFinalizerReference();mirror::HeapReference*referent_addr=ref->GetReferentReferenceAddr();//IsNullOrMarkedHeapReference锛氬垽鏂疄闄呭璞℃槸鍚﹁鏍囪鐨勫紩鐢╥f(!collector->IsNullOrMarkedHeapReference(referent_addr,/*do_atomic_update*/false)){//MarkObject锛氶噸鏂版爣璁颁綅鍙揪瀵硅薄ObjPtrforward_address=collector->MarkObject(referent_addr->AsMirrorPtr());//涓存椂灏嗗疄闄呭璞″瓨鍌ㄥ湪鍍靛案瀛楁涓璻ef->SetZombie(forward_address);//瑙i櫎鍏宠仈锛堟櫘閫氬紩鐢ㄥ璞′篃鍙互杩涜姝ゆ搷浣滐級ref->ClearReferent();//灏嗗紩鐢ㄥ璞″姞鍏leared_references闃熷垪锛堟櫘閫氬紩鐢ㄥ璞′篃鏈夋鎿嶄綔锛塩leared_references->EnqueueReference(ref);}DisableReadBarrierForReference(ref->AsReference());}}鍍靛案瀛楁涓殏瀛樼殑瀹為檯瀵硅薄锛欶inalizerReference.java//鐢辫櫄鎷熸満缁存姢锛岀敤浜庢殏瀛樺疄闄呭璞rivateTzombie;//2.2鍙栧嚭寮曠敤鎸囧悜鐨勫璞★紙鍏跺疄锛宼akethezombiefield)@OverridepublicTget(){returnzombie;}//2.3瑙i櫎鍏宠仈銆傚疄闄呬笂锛岃櫄鎷熸満宸茬粡瑙i櫎浜嗗叧鑱斻€傚湪杩欓噷锛屽畠鍙槸杩斿洖涓存椂瀛樺偍鍦ㄥ兊灏镐腑鐨勫疄闄呭璞°€侤Overridepublicvoidclear(){zombie=null;}鑷虫锛孎inalizer鏈哄埗鍦ㄥ垎鏋愬畬瀹炵幇鍘熺悊鍚庯紝鐢ㄧず鎰忓浘鎬荤粨涓€涓嬫暣涓繃绋嬶細3.鎬荤粨涓€涓婩inalizer鏈哄埗鏈€閲嶈鐨勫嚑涓幆鑺傦細1.涓轰簡瀹炵幇瀵硅薄鐨凢inalizer鏈哄埗锛岃櫄鎷熸満璁捐浜咶inalizerReference寮曠敤绫诲瀷銆傞噸鍐橭bject#finalize()鏂规硶鐨勭被鍨嬩細鍦ㄧ被鍔犺浇杩囩▼涓鏍囪涓篺inalizable绫诲瀷锛屾瘡娆″垱寤哄璞℃椂閮戒細鍚屾鍒涘缓鍏宠仈鐨凢inalizerReference寮曠敤瀵硅薄锛?.褰撲竴涓笉鍙揪鐨勫璞″嵆灏嗚鍨冨溇鍥炴敹鍣ㄥ洖鏀舵椂锛岃櫄鎷熸満瑙i櫎瀹為檯瀵硅薄涓庡紩鐢ㄥ璞$殑鍏宠仈锛屽苟灏嗗紩鐢ㄥ璞℃坊鍔犲埌鍏宠仈鐨勫紩鐢ㄩ槦鍒椾腑銆備絾鏄紝鐢变簬finalizable瀵硅薄涔熼渶瑕佹墽琛宖inalize()鏂规硶锛屽瀮鍦惧洖鏀跺櫒浼氫富鍔ㄥ皢璇ュ璞℃爣璁颁负鍙揪瀵硅薄锛屽苟灏嗗疄闄呭璞℃殏鏃跺瓨鏀惧湪FinalizerReference鐨剒ombie瀛楁涓紱3.瀹堟姢绾跨▼ReferenceQueueDaemon浼氳疆璇㈠叏灞€涓存椂Queue鏈叆闃熼槦鍒楋紝灏嗗紩鐢ㄥ璞″垎鍒玴ost鍒板叧鑱旂殑寮曠敤闃熷垪涓€?.瀹堟姢绾跨▼FinalizerDaemon浼氳疆璇㈣瀵熷紩鐢ㄩ槦鍒楋紝瀵瑰疄闄呭璞℃墽琛宖inalize()鏂规硶銆傚弬鑰冭祫鏂橢ffectiveJava(3rdEdition)(8.AvoidusingFinalizerandCleanrmechanisms)-[缇嶿JoshuaBloch娣卞叆鐞嗚ВAndroid锛欽ava铏氭嫙鏈篈RT锛堢14绔燝CinART锛?閭撳嚒骞虫繁鍏ョ悊瑙ava铏氭嫙鏈猴紙绗?鐗堬級锛堢3绔犲瀮鍦炬敹闆嗗櫒涓庡唴瀛樺垎閰嶇瓥鐣ワ級鈥斺€斿懆蹇楁槑鎮ㄧ殑璧炵編瀵规垜鏉ヨ鎰忎箟閲嶅ぇ锛佸井淇℃悳绱㈠叕浼楀彿銆愬江鏃澘銆戯紝甯屾湜澶у涓€璧锋帰璁ㄦ妧鏈紝鎵惧埌蹇楀悓閬撳悎鐨勬湅鍙嬶紝鎴戜滑涓嬫湡鍐嶈锛佷笉浠呬粎鏄唬鐮併€?/p>