ContextLoaderListener鏄竴涓猄ervlet鐩戝惉鍣紝鐢ㄤ簬鐩戝惉Web搴旂敤绋嬪簭鐨勪笂涓嬫枃鍔犺浇杩囩▼銆傚畠璐熻矗鍔犺浇鍜屽垵濮嬪寲Web搴旂敤绋嬪簭鐨勬牴搴旂敤绋嬪簭涓婁笅鏂囷紝骞跺皢鍏跺瓨鍌ㄥ湪ServletContext涓紝浠ヤ究鏁翠釜搴旂敤绋嬪簭鍙互璁块棶銆?/p>

涓嬮潰鏄疌ontextLoaderListener鍔犺浇杩囩▼鐨勮缁嗘楠わ細

1. 褰揥eb搴旂敤绋嬪簭鍚姩鏃讹紝瀹瑰櫒浼氬垱寤轰竴涓猄ervletContext瀵硅薄锛屽苟灏嗗叾浼犻€掔粰ContextLoaderListener鐨刢ontextInitialized(ServletContextEvent event)鏂规硶銆?/p>

2. 鍦╟ontextInitialized鏂规硶涓紝ContextLoaderListener鍒涘缓涓€涓猈ebApplicationContext瀹炰緥锛岃瀹炰緥灏嗙敤浜庡姞杞藉拰鍒濆鍖栨牴搴旂敤绋嬪簭涓婁笅鏂囥€?/p>

3. ContextLoaderListener鏍规嵁閰嶇疆鏂囦欢涓殑鎸囧畾锛岄€夋嫨浣跨敤XmlWebApplicationContext鎴朅nnotationConfigWebApplicationContext浣滀负WebApplicationContext鐨勫疄鐜般€俋mlWebApplicationContext鐢ㄤ簬浠嶺ML鏂囦欢涓姞杞紹ean瀹氫箟锛孉nnotationConfigWebApplicationContext鐢ㄤ簬鏍规嵁娉ㄨВ閰嶇疆鍔犺浇Bean瀹氫箟銆?/p>

4. ContextLoaderListener鏍规嵁閰嶇疆鏂囦欢鐨勪綅缃垱寤轰竴涓猂esourceLoader锛岀敤浜庡姞杞介厤缃枃浠躲€傞€氬父锛岄厤缃枃浠朵綅浜巆lasspath涓嬬殑涓€涓垨澶氫釜XML鏂囦欢涓€?/p>

5. ContextLoaderListener浣跨敤ResourceLoader鍔犺浇閰嶇疆鏂囦欢锛屽苟灏嗗叾浼犻€掔粰WebApplicationContext鐨刲oadBeanDefinitions(Resource resource)鏂规硶锛屽皢Bean瀹氫箟鍔犺浇鍒版牴搴旂敤绋嬪簭涓婁笅鏂囦腑銆?/p>

6. 鍦╨oadBeanDefinitions鏂规硶涓紝WebApplicationContext瑙ｆ瀽閰嶇疆鏂囦欢锛屽苟鏍规嵁Bean瀹氫箟鍒涘缓鍜屽垵濮嬪寲Bean瀹炰緥銆傝繖娑夊強鍒板疄渚嬪寲Bean锛岃В鏋愪緷璧栧叧绯伙紝骞朵负Bean璁剧疆灞炴€у€笺€?/p>

7. 鍔犺浇瀹屾墍鏈夌殑Bean瀹氫箟鍚庯紝鏍瑰簲鐢ㄧ▼搴忎笂涓嬫枃琚垵濮嬪寲骞跺噯澶囧氨缁€?/p>

8. ContextLoaderListener灏嗘牴搴旂敤绋嬪簭涓婁笅鏂囧瓨鍌ㄥ湪ServletContext鐨勪竴涓睘鎬т腑锛屼互渚挎暣涓簲鐢ㄧ▼搴忓彲浠ラ€氳繃ServletContext瀵硅薄璁块棶鏍瑰簲鐢ㄧ▼搴忎笂涓嬫枃銆?/p>

9. 褰揥eb搴旂敤绋嬪簭鍏抽棴鏃讹紝瀹瑰櫒浼氳皟鐢–ontextLoaderListener鐨刢ontextDestroyed(ServletContextEvent event)鏂规硶銆?/p>

10. 鍦╟ontextDestroyed鏂规硶涓紝ContextLoaderListener閿€姣佹牴搴旂敤绋嬪簭涓婁笅鏂囷紝骞堕噴鏀剧浉鍏崇殑璧勬簮锛屼互纭繚搴旂敤绋嬪簭鐨勬甯稿叧闂€?/p>

鎬荤粨璧锋潵锛孋ontextLoaderListener鐨勫姞杞借繃绋嬫秹鍙婂埌鍒涘缓WebApplicationContext銆佸姞杞介厤缃枃浠躲€佽В鏋愬苟鍒涘缓Bean瀹炰緥銆佸垵濮嬪寲鏍瑰簲鐢ㄧ▼搴忎笂涓嬫枃锛屽苟灏嗗叾瀛樺偍鍦⊿ervletContext涓€傝繖鏍凤紝鏁翠釜搴旂敤绋嬪簭閮藉彲浠ラ€氳繃ServletContext瀵硅薄璁块棶鏍瑰簲鐢ㄧ▼搴忎笂涓嬫枃銆?/p>