Java程序設(shè)計 13章_ppt.txt

1、絎?3绔?#JSP紼嬪簭璁捐瀛︿範(fàn)鐩殑錛?鐞嗚В鎺屾彙JSP鐨勫熀鏈娉?鎺屾彙JavaBean鐨勭紪鍐欎笌搴旂敤鎺屾彙JSP涓爣絳懼簱鐨勫簲鐢ㄤ互鍙?qiáng)鑷畾涔夋爣珑殑梃?浜嗚ВServlet鐨勫簲鐢?瀛︿範(fàn)閲嶇偣錛?鎺屾彙JavaBean鐨勭紪鍐欎笌搴旂敤鎺屾彙JSP涓爣絳懼簱鐨勫簲鐢ㄤ互鍙?qiáng)鑷畾涔夋爣珑殑梃?絎?3绔?#JSP紼嬪簭璁捐鏈珷鎻愯?錛?1.JSP鍩烘湰璇硶鍙?qiáng)鍐吘|璞＄殑浣跨敤虜聽聽聽聽聽聽

2、聽2.JavaBean鐨勪嬌鐢?虜聽聽聽聽聽聽聽3.鏍囩搴?4.JSP涓嶴ervlet搴旂敤13.1JSP綆€浠?13.1.1JSP紼嬪簭JSP錛圝avaServerPages錛夋槸鐢盨unMicrosystems鍏徃鍊″銆佽澶氬叕鍙稿弬涓庡緩绔嬬殑涓€縐嶅姩鎬佺綉欏墊妧鏈爣鍑嗐€?JSP鎶€鏈槸鍦ㄤ紶緇熺殑緗戦〉HTML鏂囦歡(.htm錛?.html)涓彃鍏?ava紼嬪簭孌?let)鍜孞SP鏍囪(tag)錛屼粠鑰屽艦鎴

3、怞SP鏂囦歡(.jsp)銆?Web鏈嶅姟鍣ㄥ湪閬囧埌璁塊棶JSP緗戦〉鐨勮姹傛椂錛岄?鍏堟墽琛屽叾涓殑紼嬪簭孌碉紝鐒跺悗灝嗘墽琛岀粨鏋滆繛鍚孞SP鏂囦歡涓殑HTML浠ｇ爜涓€璧瘋繑鍥炵粰瀹㈡埛銆傛彃鍏ョ殑Java紼嬪簭孌靛彲浠ユ搷浣滄暟鎹簱銆侀噸鏂板畾鍚戠綉欏電瓑錛屼互瀹炵幇寤虹珛鍔ㄦ€佺綉欏墊墍闇€瑕佺殑鍔熻兘銆?JSP鏄湪鏈嶅姟鍣ㄧ鎵ц?鐨勶紝閫氬父榪斿洖緇欏鎴風(fēng)鐨勫氨鏄竴涓狧TML鏂囨湰錛屽洜姝ゅ鎴風(fēng)鍙?鏈夋祻瑙

4、堝櫒灝辮兘嫻忚?錛屼笉闇€瑕侀檮鍔犱換浣曠殑鏀寔杞歡銆?13.1.2JSP璇硶姒傝堪JSP璇硶鍒嗕負(fù)涓夌被錛氳剼鏈厓绱狅紙ing錛夈€佹寚浠ゅ厓绱狅紙Directive錛夊拰鍔ㄤ綔鍏冪礌錛圓ctions錛夈€?JSP鐨勮剼鏈厓绱狅紝鍖呭惈娉ㄩ噴銆佸０鏄庛€佽剼鏈拰琛ㄨ揪寮忓洓涓儴鍒嗐€傚湪JSP鏂囦歡涓彲浠ュ姞鍏ヤ袱縐嶅艦寮忕殑娉ㄩ噴錛屼竴縐嶅叾鍐呭鍙互琚祻瑙堝櫒鏌ョ湅錛屽彟涓€縐嶆祻瑙堝櫒涓嶈兘鏌ョ湅銆傚

5、０鏄庣敤浜庡湪JSP欏甸潰涓畾涔夋柟娉曟垨鍙橀噺錛岃繖浜涙柟娉曟垨鍙橀噺鍙?鍚屼竴涓〉闈?腑鐨勫叾瀹冧唬鐮佽闂€傝剼鏈嵆鍦↗SP欏甸潰涓彃鍏ョ殑Java紼嬪簭浠ｇ爜孌碉紝榪欎簺浠ｇ爜孌靛祵鍦ㄦ爣璁扳€?%鈥濅笌鈥?鈥濅箣闂淬€傝〃杈懼紡鐢ㄤ簬鐩存帴灝嗘暟鎹緭鍑哄埌欏甸潰銆?JSP鎸囦護(hù)鍏冪礌鏈変笁涓紝鍒嗗埆鏄痯age銆乮nclude鍜宼aglib銆傝繖浜涙寚浠ゅ厓绱犳槸閽堝JSP寮曟搸璁捐鐨勶紝涓嶄細(xì)浜х敓浠諱綍鐩

6、存帴杈撳嚭銆傚畠浠寘鍚湪鏍囪鈥?%@鈥濆拰鈥?鈥濅箣闂淬€?page鎸囦護(hù)鐢ㄤ簬瀹氫箟JSP鏂囦歡涓殑鍏ㄥ眬灞炴€э紝include鎸囦護(hù)鐢ㄤ簬鍦↗SP欏甸潰涓寘鍚彟澶栦竴涓枃浠剁殑鍐呭錛宼aglib鎸囦護(hù)鐢ㄤ簬瀹氫箟涓€涓爣絳懼簱浠ュ強(qiáng)鑷畾涔夋爣絳劇殑鍓嶇紑銆?鍦↗SP2.0瑙勮寖涓畾涔変簡20澶氫釜鍔ㄤ綔鍏冪礌銆傚湪JSP璇硶涓紝鐢?jsp:xxx琛ㄧず鍔ㄤ綔錛屽彲浠ョ敤瀹冩帶鍒禞SP寮曟搸鐨勫姩浣溿€備互

7、涓嬫槸甯歌鐨勫姩浣滐細(xì)?錛氬垱寤轟竴涓狟ean瀹炰緥騫舵寚瀹氬畠鐨勫悕瀛楀拰浣滅敤鑼冨洿錛?錛氳緗瓸ean鐨勫睘鎬у€鹼紱錛氳幏鍙朆ean瀹炰緥鐨勫睘鎬у€鹼紱錛氬寘鍚竴涓潤鎬佹垨鍔ㄦ€佹枃浠訛紱錛氶噸瀹氬悜涓€涓埌鍙︿竴涓狫SP欏甸潰錛?娉曪紝鏍煎紡涓猴細(xì)瀹炰緥鍚鏂規(guī)硶鍚嶃€??13.3JSP鏍囩搴?JSP鏍囩搴擄紙涔熻?縐頒綔瀹氬埗鏍囩錛夋槸涓€縐嶉€氳繃JavaBean鐢熸垚鍩轟簬XML鐨勮剼鏈殑鏂規(guī)硶銆備粠姒傚康涓

8、婅錛屾爣絳懼氨鏄緢綆€鍗曡€屼笖鍙噸鐢ㄧ殑浠ｇ爜緇撴瀯銆侸SP鏍囩搴撴渶澶х殑浣滅敤鍦ㄤ簬璁╃敤鎴峰彲浠ヨ嚜琛屾寚瀹氫竴涓爣絳俱€?鏍囩澶勭悊綾繪槸涓€涓爣鍑嗙殑Java綾伙紝鍦ㄨ綾諱腑瀹氫箟浜嗗悇縐嶅悇鏍風(fēng)殑鏂規(guī)硶鏉ュ鏍囩搴撴弿榪版枃浠朵腑瀹氫箟鐨勬爣絳捐繘琛屽?鐞嗐€傛垜浠妸璇ョ被鐨勫畾涔夋枃浠跺彨鍋歍EI錛圱agExtraInfmationfiles錛夋枃浠訛紝TEI鏂囦歡鍦ㄨ緙栬瘧涓篶?alss綾繪枃浠朵

9、箣鍚庯紝琚斁鍒癑SP鏈嶅姟鍣ㄧ殑鐩稿簲鐩綍涓€?13.3.1鏍囩澶勭悊綾?閫氫織鍦拌錛屾爣絳懼?鐞嗙被灝辨槸鐢ㄤ簬瑙ｉ噴鏍囪鐨勭被銆傜敱浜庡畠鏄竴涓爣鍑嗙殑Java綾伙紝鍥犳緙栧啓鏂規(guī)硶涓庢櫘閫氱殑綾諱竴鑷達(dá)紝浣嗗洜涓哄簲鐢ㄧ幆澧冪殑涓嶅悓錛孴EI鏂囦歡鍦ㄥ疄鐜頒笂榪樻槸鏈夎嚜宸辯殑鐗規(guī)畩涔嬪銆??TEI涓殑Java綾諱竴鑸戶鎵胯嚜TagSuppt綾繪垨dyTagSuppt綾伙紝浣嗗鏋滄槸緇?ф壙鑷猅agSuppt

10、綾伙紝鍒欏繀欏婚噸杞絛oStartTag()鍜宒oEndTag()鏂規(guī)硶銆?13.3.2鏍囩搴撴弿榪版枃浠?JSP鏍囩搴撻渶瑕佷竴涓爣絳懼簱鎻忚堪絎︼紙TLD錛夋枃浠舵潵瀹氫箟鏍囩鐨勫悕縐般€佸睘鎬т互鍙?qiáng)鎿嶄綔桄爣珑殑Java綾匯€?TLD鏂囦歡閫氬父灝變互鏍囩澶勭悊鍣ㄥ懡鍚嶅茍琚瓨鏀懼湪“WEBINF“鐩綍涔嬩笅銆傝鏂囦歡鐨勬枃浠舵墿灞曞悕鏄?tld銆?TLD鏂囦歡鏄竴涓櫘閫氱殑XML鏍煎紡鐨勬爣璁板畾涔夋枃浠

11、訛紝瑕佷嬌榪欎釜TLD鏂囦歡琚獼SP鏂囦歡璁塊棶錛屽畠蹇呴』瀹氫箟Tlibversion銆乯spversion銆乻htname銆乽ri銆乮nfo銆乼ag鍏釜灞炴€с€?鐢變簬TLD鏂囦歡鏄竴涓猉ML鏂囦歡錛屽洜姝ゅ畠涔熷繀欏葷鍚圶ML鏂囦歡鐨勮鑼冦€??13.3.3鍦↗SP紼嬪簭涓嬌鐢ㄦ爣絳?JSP紼嬪簭涓嬌鐢ㄧ殑鏍囩搴撴湁涓ょ?錛屼竴縐嶆槸鏍囧噯鏍囩搴擄紙JSTL錛夛紝鍙︿竴縐嶆槸鐢ㄦ埛鑷畾涔夋爣絳懼簱銆傛爣鍑嗘爣絳懼簱

12、鏄竴涓負(fù)瀹炵幇Web搴旂敤紼嬪簭鐨勫父鐢ㄥ姛鑳借€屽畾鍒剁殑鏍囪搴撻泦錛岃繖浜涘姛鑳藉寘鎷熀鏈緭鍏ヨ緭鍑恒€佹祦紼嬫帶鍒躲€佸驚鐜€乆ML鏂囦歡鍓栨瀽銆佹暟鎹簱鏌ヨ銆佸浗闄呭寲鍜屾枃瀛楁牸寮忓寲鐨勫簲鐢ㄧ瓑銆?鍦↗SP紼嬪簭涓嬌鐢ㄦ爣絳撅紝鏄埄鐢╰aglib鎸囦護(hù)鏉ュ疄鐜扮殑銆?13.3.4鑷畾涔夋爣絳懼簱涓€涓嚜瀹氫箟鐨則ag鏍囩鏄敤鎴峰畾涔夌殑涓€縐岼SP鏍囪銆傚綋涓€涓惈鏈夎嚜瀹氫箟鐨則ag鏍囩鐨

13、凧SP欏甸潰琚玧sp寮曟搸緙栬瘧鎴恠ervlet鏃訛紝tag鏍囩琚漿鍖栨垚浜嗗涓€涓О涓簍ag澶勭悊綾葷殑瀵硅薄榪涜鐨勬搷浣溿€備簬鏄綋?JSP欏甸潰琚玧sp寮曟搸杞寲涓簊ervlet鍚庯紝瀹為檯涓妕ag鏍囩琚漿鍖栨垚涓轟簡瀵箃ag澶勭悊綾葷殑鎿嶄綔銆?JSP鏍囩閮藉疄鐜頒簡javax.servlet.jsp.tagext.JspTag鎺ュ彛銆傝繖涓帴鍙ｆ湁涓や釜鐩存帴瀛愭帴鍙ｃ€?SimpleTag鎺ュ彛錛氬畠鏄

14、疛SP2.0鏂板鍔犵殑鎺ュ彛錛屼唬琛ㄤ簡綆€鍗曠殑鏍囩錛??Tag鎺ュ彛錛氬畠鏄繀欏昏?瀹炵幇鐨勬帴鍙ｏ紝瀹冩湁涓€涓洿鎺ュ瓙鎺ュ彛灝辨槸IterationTag銆?IterationTag鎺ュ彛鏈変竴涓畝鍗曠殑瀹炵幇綾諱負(fù)TagSuppt錛屼粠TagSuppt鎵╁睍鍙互寮€鍙戝嚭榪唬鏍囩銆侷terationTag榪樻湁涓€涓瓙鎺ュ彛BodyTag銆傝繖縐嶆爣絳懼厑璁稿甫鏈塀ody錛孊odyTag涔熸湁涓€涓疄鐜扮被錛屽

15、氨鏄疊odyTagSuppt錛屽湪寮€鍙態(tài)odyTag鏃訛紝寰€寰€鐩存帴浠庡畠緇ф壙灝卞彲浠ヤ簡銆?浣跨敤Tag鎺ュ彛寮€鍙戣嚜瀹氫箟鏍囩紼嬪簭鏈変互涓?涓楠わ細(xì)錛錛夊紑鍙戞爣絳懼疄鐜扮被?錛錛夌紪鍐欐爣絳炬弿榪幫紝榪欎釜鎻忚堪閫氬父鏄互?.tld緇撳熬鐨勬枃浠躲€倀ld鏂囦歡鎻忚堪鍜岃鏄庝簡灞炴€с€佷俊鎭拰鏍囩澶勭悊鍣ㄦ枃浠朵綅緗瓑淇℃伅銆侸SP瀹瑰櫒浣跨敤榪欎竴鏂囦歡鏉ユ槧灝勮璋冪敤鏍囩搴撶殑浣嶇疆鍜岀敤娉?