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2.1瑙勮寖姒傝堪錛堜腑鏂囩増錛夈�庤漿銆?/title><link>http://www.tkk7.com/mlw2000/articles/86179.html</link><dc:creator>mlw2000</dc:creator><author>mlw2000</author><pubDate>Thu, 07 Dec 2006 14:00:00 GMT</pubDate><guid>http://www.tkk7.com/mlw2000/articles/86179.html</guid><wfw:comment>http://www.tkk7.com/mlw2000/comments/86179.html</wfw:comment><comments>http://www.tkk7.com/mlw2000/articles/86179.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/mlw2000/comments/commentRss/86179.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/mlw2000/services/trackbacks/86179.html</trackback:ping><description><![CDATA[1姒傝堪 <br />鍜屼紶緇熺殑Server绔墿灞曟満鍒剁浉姣旓紝Servlet鏈夊涓嬩紭鐐癸細 <br />1錛?姣擟GI鑴氭湰蹇紝鍥犱負Servlet閲囩敤浜嗕笉鍚岀殑澶勭悊妯″紡銆?br />2錛?Servlet浣跨敤鐨勬爣鍑咥PI涓哄ぇ澶氭暟Web Server鎵�鎺ュ彈銆?br />3錛?鍥犱負鏄疛ava璇█寮�鍙戠殑錛屾墍浠ユ嫢鏈塉ava鐨勬墍鏈変紭鐐癸紝鍖呮嫭鏄撲簬寮�鍙戝拰騫沖彴鏃犲叧絳夈�?<br />4錛?鍙互鏂逛究鍦拌闂ぇ閲忕殑Java綾誨簱璧勬簮銆?<br /><br />2 Servlet鐢熷懡鍛ㄦ湡 <br />涓�涓猄ervlet鏈変竴涓敓鍛藉懆鏈燂紝瀹氫箟浜嗕竴涓猄ervlet 濡備綍琚姞杞藉拰琚垵濮嬪寲錛屽畠鎬庢牱鎺ユ敹璇鋒眰銆佸搷搴旇姹傘�佹�庢牱鎻愪緵鏈嶅姟銆?br /><br />鍦ㄤ唬鐮佷腑錛孲ervlet鐢熷懡鍛ㄦ湡鐢辨帴鍙ｏ細javax.servlet.Servlet 鎵�瀹氫箟銆?鎵�鏈夌殑Java Servlet 蹇呴』錛岀洿鎺ユ垨闂存帴鍦板疄鐜癹avax.servlet.Servlet鎺ュ彛錛岃繖鏍鋒墠鑳藉湪Servlet Engine涓婅繍琛屻�係ervlet Engine鎻愪緵network Service, 鍝嶅簲MIME request, 榪愯Servlet Container銆?javax.servlet.Servlet鎺ュ彛瀹氫箟浜嗕竴浜涙柟娉曪紝鍦⊿ervlet 鐨勭敓鍛藉悓鏈熶腑榪欎簺鏂規(guī)硶浼氬湪鐗瑰畾鏃墮棿鎸夌収涓�瀹氱殑欏哄簭琚皟鐢ㄣ�傚涓嬪浘錛?br /><br />2.1 Servlet 濡備綍琚姞杞斤紙Load錛夛紝琚疄渚嬪寲錛圛nstantiated錛?br />Servlet Engine 璐熻矗瀹炰緥鍖栧拰鍔犺澆Servlet錛岃繖涓繃紼嬪彲浠ュ湪Servlet Engine 鍔犺澆鏃舵墽琛岋紝鍙互鍦⊿ervlet 鍝嶅簲璇鋒眰鏃舵墽琛岋紝涔熷彲浠ュ湪涓よ�呬箣闂寸殑浠諱綍鏃跺�欐墽琛屻�?<br /><br />2.2 Servlet濡備綍琚垵濮嬪寲(Initialized) <br />Servlet Engine 鍔犺澆濂絊ervlet 鍚庯紝蹇呴』瑕佸垵濮嬪寲瀹冦�傚垵濮嬪寲鏃禨ervlet 鍙互浠庢暟鎹簱閲岃鍙栧垵濮嬫暟鎹紝寤虹珛JDBC Connection錛屾垨鑰呭緩绔嬪鍏跺畠鏈変環(huán)鍊肩殑璧勬簮鐨勫紩鐢ㄣ�?<br />鍦ㄥ垵濮嬪寲闃舵錛孖nit( )鏂規(guī)硶琚皟鐢ㄣ�傝繖涓柟娉曞湪javax.servlet.Serlet鎺ュ彛涓畾涔夈�侷nit( )鏂規(guī)硶浠ヤ竴涓猄ervlet 閰嶇疆鏂囦歡錛圫ervletConfig 鍨嬶級涓哄弬鏁般�係ervlet configuration 瀵硅薄鐢盨ervlet Engine 瀹炵幇錛屽彲浠ヨServlet 浠庝腑璇誨彇涓�浜沶ame-value瀵圭殑鍙傛暟鍊箋�係ervletConfig瀵硅薄榪樺彲浠ヨServlet access 涓�涓猄ervlet Context瀵硅薄銆?<br /><br />2.3 Servlet 濡備綍澶勭悊璇鋒眰 <br />Servlet 琚垵濮嬪寲浠ュ悗錛屽氨澶勪簬鑳藉搷搴旇姹傜殑灝辯華鐘舵�併�傛瘡涓Servlet 鐨勮姹傜敱涓�涓猄ervlet Request 瀵硅薄浠ｈ〃銆係ervlet 緇欏鎴風鐨勫搷搴旂敱涓�涓猄ervlet Response瀵硅薄浠ｈ〃銆?<br />褰撳鎴風鏈変竴涓姹傛椂錛孲ervlet Engine 灝哠ervletRequest 鍜孲ervletResponse瀵硅薄閮借漿鍙戠粰Servlet錛岃繖涓や釜瀵硅薄浠ュ弬鏁扮殑褰㈠紡浼犵粰Service鏂規(guī)硶銆傝繖涓柟娉曠敱javax.servlet.Servlet瀹氫箟銆佸茍鐢卞叿浣撶殑Servlet 瀹炵幇銆?br />Servlet榪樺彲浠ュ疄鐜?ServletRequest 鍜孲ervletResponse鎺ュ彛銆係ervletRequest鎺ュ彛鍙互璁㏒ervlet 鑾峰彇瀹㈡埛绔姹備腑鐨勫弬鏁般�傚form data, request淇℃伅錛屽崗璁被鍨嬬瓑絳夈�係ervlet 鍙互浠嶴ervletInputStream嫻佷腑璇誨彇request 鏁版嵁銆係ervletResponse鎺ュ彛鍏佽Servlet璁劇疆response headers鍜宻tatus codes 銆傚疄鐜拌繖涓帴鍙ｅ彲浠ヤ嬌Servlet鑳借闂甋ervletOutputStream嫻佺敤鏉ュ悜瀹㈡埛绔繑鍥炴暟鎹�?<br /><br />2.4 澶氱嚎紼嬪拰鏄犲皠錛圡apping錛?<br />鍦ㄥ綰跨▼鐜涓紝澶у鏁癝ervlet 蹇呴』鑳藉鐞嗗悓鏃跺彂鐢熺殑澶氫釜璇鋒眰銆備絾涓�縐嶆儏鍐典緥澶栵紝灝辨槸褰撲竴涓猄ervlet 瀹炵幇浜?SingleThreadModel鎺ュ彛錛岃繖鏍風殑Servlet 鍙細鍝嶅簲鍚屼竴鏃墮棿鐨勪竴涓姹傘�?br />Servlet鏍規(guī)嵁Servlet Engine 鐨凪apping 鏉ュ搷搴斿鎴風璇鋒眰銆丮apping灝哢RL鍜孲ervlet瀹炰緥鐩稿搴斻�傛瘮濡傦細/hello/index.html鍙互瀵瑰簲HelloServlet銆?鐒惰�岋紝涓�涓搴斾篃鍙互灝嗕竴涓猆RL鍜屽涓猄ervlet瀹炰緥鐩稿搴斻�傛瘮濡傦紝涓�涓垎甯冨紡鐨凷ervlet Engine 榪愯鍦ㄥ鍙版満鍣ㄤ笂鏃訛紝 鍚屼竴涓猄ervlet 鍙互鏈夊涓疄渚嬭繍琛屽湪涓嶅悓鐨勬湇鍔″櫒涓婏紝浠ュ潎琛″鐞嗙殑璐熻澆銆備綔涓轟竴涓猄ervlet 寮�鍙戣�呫�備綘涓嶈兘鍋囧畾Servlet灝嗘潵鍙湁涓�涓疄渚嬨�?br /><br />2.5 Servlet濡備綍琚噴鏀?<br />Servlet Engine 娌℃湁蹇呰鍦⊿ervlet 鐢熷懡鍛ㄦ湡鐨勬瘡涓�孌墊椂闂村唴閮戒繚鎸丼ervlet鐨勭姸鎬併�係ervlet Engine鍙互闅忔椂闅忔剰浣跨敤鎴栭噴鏀維ervlet銆傚洜姝わ紝浣犱笉鑳戒緷璧朣ervlet class鎴栧叾鎴愬憳鏉ュ瓨璐俊鎭�?<br />褰揝ervlet Engine 鍒ゆ柇涓�涓猄ervlet搴斿綋琚噴鏀炬椂錛岋紙姣斿璇磂ngine鍑嗗Shut down 鎴栭渶瑕佸洖鏀惰祫婧愶級engine蹇呴』璁㏒ervlet 鑳介噴鏀懼叾姝ｅ湪浣跨敤鐨勪換浣曡祫婧愶紝騫朵繚瀛樻寔緇�х殑鐘舵�佷俊鎭�傝繖浜涘彲浠ラ�氳繃璋冪敤Servlet鐨刣estroy鏂規(guī)硶鏉ュ疄鐜般�?<br />褰揝ervlet Engine 閲婃斁涓�涓猻ervlet 浠ュ墠蹇呴』璁╁叾瀹屾垚褰撳墠瀹炰緥鐨剆ervice鏂規(guī)硶鎴栨槸絳夊埌timeout錛堝鏋渆ngine瀹氫箟浜唗imeout錛夈�傚綋engine閲婃斁涓�涓猄ervlet浠ュ悗錛宔ngine灝嗕笉鑳藉啀灝嗚姹傝漿鍙戠粰瀹冿紝engine蹇呴』褰誨簳閲婃斁璇ervlet騫跺皢鍏舵爣鏄庝負鍙洖鏀剁殑錛堢粰garbage collection錛夈�?<br /><br />3 Servlet Mapping鎶�鏈?<br />浣滀負涓�涓猄ervlet Engine 寮�鍙戣�咃紝浣犲彲浠ラ殢鎰忚瀹氬浣曞皢瀹㈡埛绔殑璇鋒眰鏄犲皠鍒癝ervlets銆係pecification鏈韓騫朵笉寮哄埗榪欑瑙勫垯錛岀劧鑰屼綘鍙互浣跨敤涓嬮潰浠諱綍涓�縐嶅緩璁細<br /><br />1錛?浣犲彲浠ヤ嬌涓�涓猻ervlet 鍙拰涓�涓猆RL瀵瑰簲銆?濡傦細URL/feedback/index.html瀵瑰簲feedBack class銆?br />2錛?鍙互璁や負鎸囧畾鐨勬煇浜涚洰褰曚笅鍏ㄦ槸Servlet銆?br />3錛?鍙互鎸囧畾浠ョ壒孌婄殑鍚庣紑鍚嶇粨灝劇殑璇鋒眰涓篠ervlet璇鋒眰銆?濡傦細*.thtml璁や負鏄疭ervlet銆?<br />4錛?浣跨敤鐗瑰畾鐨刄RL:/servlet/servlet_name. <br />5錛?鍙互鐩存帴鐢⊿ervlet鐨刢lass鍚嶆潵嬋�媧誨畠銆?濡傦細/servlet/com.foo.servlet.MailServlet.<br /><br />4 Servlet Context ServletContext 鎺ュ彛 <br />瀹氫箟浜嗕竴涓猄ervlet context 瀵硅薄錛屼繚瀛樼潃Servlet engine 鐨勪俊鎭�傞�氳繃Servlet context, Servlet 鍙互璁版棩蹇楁枃浠訛紝鍙互鑾峰彇璧勬簮鍜屽璞★紙姣斿RequestDispatcher錛夈�備竴涓猄ervlet 鍙兘鍦ㄤ竴涓猄ervlet context 涓嬭繍琛岋紝浣嗕笉鍚岀殑Servlet鑳芥嫢鏈塖ervlet Engine 鐨勪笉鍚岃鍥俱�?br />濡傛灉涓�涓猄ervlet Engine鏀寔铏氭嫙涓繪満錛屾瘡涓櫄鎷熶富鏈烘嫢鏈変竴涓猄ervlet context,瀹冧笉鑳借澶氫釜铏氭嫙涓繪満鍏變韓銆?br />Servlet Engine 鍙互璁㏒ervlet Context鎷ユ湁鑷繁鐨勮寖鍥達紝灝辮薄浣滀負URL鐨勪竴閮ㄥ垎銆傚涓�涓猄ervlet Context 灞炰簬涓�涓摱琛屽簲鐢紝鍙互琚槧灝勫埌/bank錛岃繖鏃朵竴涓猤etContext璇鋒眰(鐢?bank/fooServlet鍙戝嚭)灝嗚繑鍥?bank鐨凷ervlet Context銆?<br /><br />5 HTTP Sessions <br />HTTP鏄竴涓猻tateless鐨勫崗璁紝涓轟簡寤虹珛鏈夋晥鐨刉eb Server Application, 浣犲繀欏昏兘璇嗗埆鏉ヨ嚜榪滅▼瀹㈡埛绔殑浼楀璇鋒眰涓摢浜涙槸灞炰簬鍚屼竴涓鎴風鐨勩�傛湁璁稿榪借釜session鐨勬柟娉曪紝浣嗛兘寰堝鏉傦紝闅句簬浣跨敤銆?<br />浣嗘槸Java Servlet API鎻愪緵浜嗕竴涓畝鍗曠殑鎺ュ彛錛屽厑璁窼ervlet Engine鏉ラ�氳繃浠諱綍閫斿緞榪借釜涓�涓敤鎴風殑session銆?br /><br />5.1鍒涘緩涓�涓猻ession <br />鍥犱負HTTP鏄竴縐?璇鋒眰--搴旂瓟"寮忕殑鍗忚銆備竴涓猻ession鎬繪槸琚涓烘槸鏂扮殑錛岀洿鍒版湁瀹㈡埛绔痡oin榪涙潵銆侸oin鎰忔�濇槸瀹㈡埛绔悜Server绔繑鍥炰簡session鐨勮拷韙俊鎭紝鎸囨槑浜唖ession宸茬粡琚緩绔嬨�?br />濡傛灉瀹㈡埛绔病鏈塲oin涓�涓猻ession錛屼綘灝變笉鑳藉亣瀹氭帴涓嬫潵鐨勫鎴風鍝嶅簲鏄睘浜庡綋鍓嶇殑session銆?<br />濡傛灉鏈変笅榪版儏鍐靛嚭鐜皊ession灝辮璁や負鏄柊鐨?<br />1.瀹㈡埛绔繕涓嶇煡閬撲換浣曞叧浜庢session鐨勪俊鎭�?<br />2. 瀹㈡埛绔�夋嫨涓嶅姞鍏ession錛屾瘮濡傚鎴風鎷掔粷鎺ュ彈cookies銆?<br />浣滀負涓�涓猻ervlet寮�鍙戣�咃紝浣犲繀欏昏璁eb Application鑳藉鐞嗗鎴風娌℃湁鎴栦笉鑳藉姞鍏ヤ竴涓猻ession鐨勬儏鍐點�係erver灝嗕繚鎸乻ession瀵硅薄涓�孌墊椂闂達紝榪欎釜鏃墮棿鍙互鐢盨erver鎴朣ervlet鎸囧畾銆傚綋涓�涓猻ession榪囨湡鍚庯紝Server灝嗛噴鏀緎ession瀵硅薄鍜屽叾瀹冧笌涔嬬粦瀹氬湪涓�璧風殑鎵�鏈夊璞°�?br /><br />5.2 緇戝畾瀵硅薄鍒頒竴涓猻ession <br />濡傛灉鏈夐渶瑕侊紝姣斿鑳藉府鍔╀綘澶勭悊搴旂敤涓殑鏁版嵁闇�瑕侊紝浣犲彲鑳戒細緇戝畾涓�浜涘璞″埌涓�涓猻ession涓�備綘鍙互緇戝畾浠諱綍瀵硅薄鍒癏ttpSession瀵硅薄涓紝鍙鐢ㄥ敮涓�鐨勬爣璇嗗悕銆備換浣曠粦瀹氬埌session涓殑瀵硅薄瀵瑰叾瀹冧換浣曚竴涓鐞嗗悓涓�涓猻ession涓殑璇鋒眰鐨凷ervlet鏉ヨ錛岄兘鏄彲瑙佺殑銆備竴浜涘璞￠渶瑕佺煡閬撹嚜宸變粈涔堟椂鍊欒鏀懼叆鎴栫Щ鍑轟竴涓猻ession錛屼綘鍙互閫氳繃HttpSession Binding Listener鎺ュ彛鏉ヨ幏寰楄繖浜涗俊鎭�傚綋浣犵殑servlet鍦╯ession涓瓨鍌ㄦ垨閲婃斁鏁版嵁鏃訛紝servlet engine媯�鏌ュ璞℃槸鍚﹂�氳繃瀹炵幇Http Session Binding Listener鐨勭被鏉ョ粦瀹氾紝濡傛灉鏄紝鎺ュ彛涓殑鏂規(guī)硶灝嗛�氱煡瀵硅薄錛屽畠宸茶緇戝畾銆?<img src ="http://www.tkk7.com/mlw2000/aggbug/86179.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/mlw2000/" target="_blank">mlw2000</a> 2006-12-07 22:00 <a href="http://www.tkk7.com/mlw2000/articles/86179.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item></channel></rss>                                                          <footer>
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