棣栧厛,鍙互鐢?br>
PropertyUtils
.getPropertyDescriptors(TestObject.class);
綾諱技鐨勪唬鐮佸彇寰桾estObjectl綾葷殑鎵鏈夊睘鎬ч泦,鍏跺悗鍒嗗埆璇誨彇PropertyDescriptor灝卞彲浠ヤ簡.涓嶈繃榪樻槸鏈変釜涓嶅お鑸掓湇鐨勫湴鏂?鎵鏈夌殑灞炴т腑浼氭湁涓涓猚lass鐨勫睘鎬?榪欎釜灞炴уお鐗規畩浜?鏈笉搴旇鍑虹幇鍦ㄨ繖閲岀殑.getPropertyDescriptors(TestObject.class);
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錛堜互鍓嶄篃鐢ㄨ繃filter錛屼絾鏄竴鐩存病鏈夎姳鏃墮棿鏉ュソ濂戒簡瑙ｄ竴涓嬶紝榪欐鑺辯偣鏃墮棿鐮旂┒涓涓嬶級
Filter鏄湪web瀹瑰櫒涓厤緗殑涓縐嶇畻鏄滄嫤鎴櫒鈥濆惂錛岃寰楁湁鎶鏈笂鐪嬩技闈炲父闅句互瑙ｅ喅鐨勯棶棰橀兘鍙互鐢‵ilter鏉ヨВ鍐熾備絾鏄鈥滄嫤鎴濈浉瀵逛簬spring鐨凙OP錛屽瓨鍦ㄧ殑鎰忔濇湁鍦ㄩ偅閲岋紵spring涓殑AOP鍙槸瀵逛竴涓猵ojo鐨勫寘瑁呭拰鈥滄嫤鎴濓紝鏈韓涔熸槸鍦╳eb瀹瑰櫒涓殑錛屽畠鎵鈥滄嫤鎴濈殑鑼冨洿灝辨湁涓瀹氱殑闄愬埗,娉ㄥ畾娌℃湁filter鍔熻兘寮哄ぇ銆侳ilter灝界鍔熻兘寮哄ぇ錛屼絾鏄敱浜庢湰韜篃鏄崋緇戝湪web瀹瑰櫒涓紝涔熸湁鑷繁鐨勫眬闄愬惂銆?br>
Filter鏈変笁涓嚱鏁幫紝implments浜唂ilter鐨勬帴鍙ｏ細
public void destroy()
public void doFilter(ServletRequest req, ServletResponse resp,
FilterChain chain)
throws IOException, ServletException
public void init(FilterConfig config) throws ServletException
涓嶉毦鐪嬪嚭錛宨nit鑲畾灝辨槸涓涓垵濮嬪寲鍑芥暟浜嗭紝鍙笉榪囧浜嶧ilterConfig 鐨勪簡瑙ｈ繕涓嶆槸澶銆傚湪瀹樻柟鐨凧2EETutorial涓湅鍒板Filter鐨勫畾涔?strong>A filter is an object that can transform the header and content (or both) of a
request or response.鐪嬭搗鏉ilter鎵鑳藉仛鐨勪簨鎯呰繕闈炲父澶氾紝瀹冭繕鑳藉瀵逛簬浠諱綍web璧勬簮榪涜鎷︽埅錛堝湪榪欑偣涓婇潰鑲畾灝辨瘮spring鐨勮寮哄ぇ浜嗭級銆?br>
涓嬮潰灝辮鑺辨椂闂寸湅鐪嬭繖涓変釜鍑芥暟浜?br>
1 鍒濆鍖栧嚱鏁?br>web瀹瑰櫒浼犺繘鏉ヤ竴涓狥ilterConfig 鍙傛暟錛岀湅鏉ヨ繖涓弬鏁拌繕姣旇緝閲嶈,綾諱技涓庝綔涓浜涘垵濮嬪寲鐨勫伐浣滀簡浠涔堢殑錛屼笉鍦ㄤ富瑕佺殑璁ㄨ鑼冨洿涔嬪唴
2 鏋勬瀽鍑芥暟
灝辨槸閭ｄ釜destroy()鍑芥暟浜嗭紝騫稿ソfilter閲岄潰涓嶄細鍑虹幇澶鐨勫叧浜庤祫婧愬垎閰嶇殑涓滆タ錛岃繖涓嚱鏁扮殑鐢ㄥ涔熶笉浼氭槸澶ぇ
3 boss鍑哄満 鎷夋媺鎷夋媺
灝辨槸鏁翠釜doFilter()鍑芥暟浜嗐備粠鍓嶇湅Webwork榪樻湁spring鐨勮祫鏂欙紝榪欎袱涓鏋墮噷闈㈠緢澶氭墍璋撶殑AOP灝辨槸涓浜涘祵濂楀湪鏌愪釜pojo涓婇潰鐨勪竴涓滃瀛愨濊屽凡錛屽pojo浼犺繘鍜屼紶鍑虹殑鏁版嵁榪涜瑙ｉ噴鍜屽鐞嗭紝浠呮鑰屽凡錛屾墍浠ュ綋鎴戠湅鍒癴ilter鐨勫畾涔夌殑鏃跺欒寰楀姝ょ殑浜插垏銆備絾鏄笉鍚岀殑filter鐨勮寖鍥翠篃涓嶇浉鍚屽喅瀹氫簡涓嶅悓鐨勭敤澶勩傛瘮濡俿pring鐨刦ilter璁捐鐨勭簿宸э紝浣滀負pojo鐨勪竴浜涘叧閿儴鍒嗙殑澶勭悊灝卞緢涓嶉敊錛屾瘮濡備簨鍔＄鐞嗭紝浣嗘槸涔熸湁寰堝鐨勯棶棰樺湪spring鎴栬厀ebwork鐨刦ilter鐨勭鐞嗚寖鍥翠箣澶栵紝姣斿hibernate涓緢鐑︿漢鐨刼pen session in view錛屾劅瑙夊鏋滀笉鐢╢ilter鐨勮瘽錛岀湡鏄病鏈夊姙娉曞鐞嗚繖涓棶棰樹簡錛岀敋鑷充細鍗辨満hibernate鐨勬櫘鍙娿傚緢綆鍗曪紝鍥犱負Filter璺焪eb瀹瑰櫒鍜宻ervlet鐨勭粨鍚堟槸濡傛鐨勭揣瀵嗭紝鎵浠ュ彧鏈変粬鎵嶈兘澶勭悊榪欎簺闂錛屼絾鏄繖涔熷氨鏄粬鐨勫紛绔紝璺焪eb瀹瑰櫒緇撳悎鐨勮繃浜庣揣瀵嗛樆紕嶄簡浠栫殑嫻嬭瘯鎬у拰鐏墊椿鎬?br>
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