銆銆Core鏍囩搴?br />
銆銆1銆?閫氱敤鏍囩
銆銆<c:out>
銆銆<c:out>鏍囩鐢ㄤ簬鍦↗SP涓樉紺烘暟鎹紝瀹冩湁濡備笅灞炴?灞?鎬?鎻?榪?鏄惁蹇呴』 緙虹渷鍊?
銆銆value 杈撳嚭鐨勪俊鎭紝鍙互鏄疎L琛ㄨ揪寮忔垨甯擱噺 鏄?鏃?
銆銆default value涓虹┖鏃舵樉紺轟俊鎭?鍚?鏃?
銆銆escapeXml 涓簍rue鍒欓伩寮鐗規畩鐨剎ml瀛楃闆?鍚?true
銆銆渚嬪瓙: 鎮ㄧ殑鐢ㄦ埛鍚嶆槸: <c:out value=”” default=”guest”/>
銆銆鏄劇ず鐢ㄦ埛鐨勭敤鎴峰悕錛屽涓虹┖鍒欐樉紺篻uest
銆銆<c:out value=""/>
銆銆鎸囧畾浠巗ession涓幏鍙杣sername鐨勫兼樉紺猴紱
銆銆<c:out value="" />
銆銆鏄劇ずusername鐨勫鹼紝榛樿鏄粠request(page)涓彇錛屽鏋渞equest涓病鏈夊悕涓簎sername鐨勫璞″垯浠巗ession涓彇錛?session涓病鏈夊垯浠巃pplication(servletContext)涓彇錛屽鏋滄病鏈夊彇鍒頒換浣曞煎垯涓嶆樉紺恒?br />
銆銆<c:set>
銆銆<c:set>鏍囩鐢ㄤ簬淇濆瓨鏁版嵁錛屽畠鏈夊涓嬪睘鎬?灞?鎬?鎻?榪?鏄惁蹇呴』 緙虹渷鍊?
銆銆value 瑕佷繚瀛樼殑淇℃伅錛屽彲浠ユ槸EL琛ㄨ揪寮忔垨甯擱噺 鍚?
銆銆target 闇瑕佷慨鏀瑰睘鎬х殑鍙橀噺鍚嶏紝涓鑸負javabean鐨勫疄渚?鍚?鏃?
銆銆property 闇瑕佷慨鏀圭殑javabean灞炴?鍚?鏃?
銆銆var 闇瑕佷繚瀛樹俊鎭殑鍙橀噺 鍚?鏃?
銆銆scope 淇濆瓨淇℃伅鐨勫彉閲忕殑鑼冨洿 鍚?page
銆銆濡傛灉鎸囧畾浜唗arget灞炴? 閭d箞property灞炴т篃蹇呴』鎸囧畾銆?br />
銆銆渚嬪瓙錛?<c:set value="" var="test2" scope=”session” />
銆銆灝唗est.testinfo鐨勫間繚瀛樺埌session鐨則est2涓紝鍏朵腑test鏄竴涓猨avabean鐨勫疄渚嬶紝testinfo鏄痶est瀵硅薄鐨勫睘鎬с?br />
銆銆<c:set target="" property="city" value=""/>
銆銆灝嗗璞ust.address鐨刢ity灞炴у間繚瀛樺埌鍙橀噺city涓?br />
銆銆<c:remove>
銆銆<c:remove>鏍囩鐢ㄤ簬鍒犻櫎鏁版嵁錛屽畠鏈夊涓嬪睘鎬?灞?鎬?鎻?榪?鏄惁蹇呴』 緙虹渷鍊?
銆銆var 瑕佸垹闄ょ殑鍙橀噺 鏄?鏃?
銆銆scope 琚垹闄ゅ彉閲忕殑鑼冨洿 鍚?鎵鏈夎寖鍥達紝鍖呮嫭page銆乺equest銆乻ession銆乤pplication絳?
銆銆渚嬪瓙: <c:remove var="test2" scope="session"/>
銆銆浠巗ession涓垹闄est2鍙橀噺銆?br />
銆銆2銆?嫻佹帶鍒舵爣絳?br />
銆銆<c:if>
銆銆<c:if>鏍囩鏈夊涓嬪睘鎬?灞?鎬?鎻?榪?鏄惁蹇呴』 緙虹渷鍊?
銆銆test 闇瑕佽瘎浠風殑鏉′歡錛岀浉褰撲簬if (...){}璇彞涓殑鏉′歡 鏄?鏃?
銆銆var 瑕佹眰淇濆瓨鏉′歡緇撴灉鐨勫彉閲忓悕 鍚?鏃?
銆銆scope 淇濆瓨鏉′歡緇撴灉鐨勫彉閲忚寖鍥?鍚?page
銆銆<c:choose>
銆銆榪欎釜鏍囩涓嶆帴鍙椾換浣曞睘鎬?br />
銆銆<c:when>
銆銆<c:when>鏍囩鏈変互涓嬪睘鎬?灞?鎬?鎻?榪?鏄惁蹇呴』 緙虹渷鍊?
銆銆test 闇瑕佽瘎浠風殑鏉′歡 鏄?鏃?
銆銆<c:otherwise>
銆銆榪欎釜鏍囩鍚屾牱涓嶆帴鍙椾換浣曞睘鎬?br />
銆銆渚嬪瓙錛?<c:if test="">
銆銆user.wealthy is true.
銆銆</c:if>
銆銆濡傛灉user.wealthy鍊紅rue錛屽垯鏄劇ずuser.wealthy is true.
銆銆<c:choose>
銆銆<c:when test="">
銆銆user.generous銆is true.
銆銆</c:when>
銆銆<c:when test="">
銆銆user.stingy is true.
銆銆</c:when>
銆銆<c:otherwise>
銆銆user.generous and user.stingy are false.
銆銆</c:otherwise>
銆銆</c:choose>
銆銆鍙湁褰撴潯浠秛ser.generous榪斿洖鍊兼槸true鏃訛紝鎵嶆樉紺簎ser.generous銆is true.
銆銆鍙湁褰撴潯浠秛ser.stingy榪斿洖鍊兼槸true鏃訛紝鎵嶆樉紺簎ser.stingy銆is true.
銆銆鍏跺畠鎵鏈夌殑鎯呭喌錛堝嵆user.generous鍜寀ser.stingy鐨勫奸兘涓嶄負true錛夊叏閮ㄦ樉紺簎ser.generous and user.stingy are false.
銆銆鐢變簬JSTL娌℃湁褰㈠if (){…} else {…}鐨勬潯浠惰鍙ワ紝鎵浠ヨ繖縐嶅艦寮忕殑璇彞鍙兘鐢?lt;c:choose>銆?lt;c:when>鍜?lt;c:otherwise>鏍囩鍏卞悓鏉ュ畬鎴愪簡銆?br />
銆銆3銆?寰幆鎺у埗鏍囩
銆銆<c:forEach>
銆銆<c:forEach>鏍囩鐢ㄤ簬閫氱敤鏁版嵁錛屽畠鏈変互涓嬪睘鎬?灞?鎬?鎻?榪?鏄惁蹇呴』 緙虹渷鍊?
銆銆items 榪涜寰幆鐨勯」鐩?鍚?鏃?
銆銆begin 寮濮嬫潯浠?鍚?0
銆銆end 緇撴潫鏉′歡 鍚?闆嗗悎涓殑鏈鍚庝竴涓」鐩?
銆銆step 姝ラ暱 鍚?1
銆銆var 浠h〃褰撳墠欏圭洰鐨勫彉閲忓悕 鍚?鏃?
銆銆varStatus 鏄劇ず寰幆鐘舵佺殑鍙橀噺 鍚?鏃?
銆銆渚嬪瓙錛?<c:forEach items="" var="vector">
銆銆<c:out value=""/>
銆銆</c:forEach>
銆銆鐩稿綋浜巎ava璇彞 for (int i=0;i<vectors.size();i++) {
銆銆out.println(vectors.get(i));
銆銆}
銆銆鍦ㄨ繖閲寁ectors鏄竴涓猨ava.util.Vector瀵硅薄錛岄噷闈㈠瓨鏀劇殑鏄疭tring鏁版嵁錛寁ector鏄綋鍓嶅驚鐜潯浠朵笅String瀵硅薄銆傚疄闄呬笂榪欓噷鐨剉ectors鍙互鏄換浣曞疄鐜頒簡java.util. Collection鎺ュ彛鐨勫璞°?
銆銆<c:forEach begin="0" end="100" var="i" step="1">
銆銆count=<c:out value=""/><br>
銆銆</c:forEach>
銆銆杈撳嚭:
銆銆count=0
銆銆...
銆銆count=100
銆銆<c:forTokens>
銆銆<c:forTokens>鏍囩鏈変互涓嬪睘鎬?灞?鎬?鎻?榪?鏄惁蹇呴』 緙虹渷鍊?
銆銆items 榪涜寰幆鐨勯」鐩?鏄?鏃?
銆銆delims 鍒嗗壊絎?鏄?鏃?
銆銆begin 寮濮嬫潯浠?鍚?0
銆銆end 緇撴潫鏉′歡 鍚?闆嗗悎涓殑鏈鍚庝竴涓」鐩?
銆銆step 姝ラ暱 鍚?1
銆銆var 浠h〃褰撳墠欏圭洰鐨勫彉閲忓悕 鍚?鏃?
銆銆varStatus 鏄劇ず寰幆鐘舵佺殑鍙橀噺 鍚?鏃?
銆銆渚嬪瓙
銆銆<c:forTokens items="a:b:c:d" delims=":" var="token">
銆銆<c:out value=""/>
銆銆</c:forTokens>
銆銆榪欎釜鏍囩鐨勪嬌鐢ㄧ浉褰撲簬java.util.StringTokenizer綾匯傚湪榪欓噷灝嗗瓧絎︿覆a:b:c:d浠ワ細鍒嗗紑寰幆鍥涙錛宼oken鏄驚鐜埌褰撳墠鍒嗗壊鍒扮殑瀛楃涓層?br />
銆銆4.瀵煎叆鏂囦歡鍜孶RL
銆銆JSTL鏍稿績鏍囩搴撴敮鎸佷嬌鐢?lt;c:import>鏉ュ寘鍚枃浠訛紝浣跨敤<c:url>鏉ユ墦鍗板拰鏍煎紡鍖朥RL,浣跨敤<c:redirect>鏉ラ噸瀹氬悜URL銆?br />
銆銆<c:import>
銆銆<c:import>鏍囩鍖呭惈鍙﹀涓涓〉闈唬鐮佸埌褰撳墠欏碉紝瀹冩湁浠ヤ笅灞炴?灞?鎬?鎻?榪?鏄惁蹇呴』 緙虹渷鍊?
銆銆url 闇瑕佸鍏ラ〉闈㈢殑url 鏄?鏃?
銆銆context /鍚庤窡鏈湴web搴旂敤紼嬪簭鐨勫悕瀛?鍚?褰撳墠搴旂敤紼嬪簭
銆銆charEncoding 鐢ㄤ簬瀵煎叆鏁版嵁鐨勫瓧絎﹂泦 鍚?ISO-8859-1
銆銆var 鎺ュ彈瀵煎叆鏂囨湰鐨勫彉閲忓悕 鍚?page
銆銆scope 鎺ュ彈瀵煎叆鏂囨湰鐨勫彉閲忕殑鍙橀噺鑼冨洿 鍚?1
銆銆varReader 鐢ㄤ簬鎺ュ彈瀵煎叆鏂囨湰鐨刯ava.io.Reader鍙橀噺鍚?鍚?鏃?
銆銆varStatus 鏄劇ず寰幆鐘舵佺殑鍙橀噺 鍚?鏃?
銆銆<c:url>
銆銆<c:url>鏍囩杈撳嚭涓涓猽rl鍦板潃錛屽畠鏈変互涓嬪睘鎬?灞?鎬?鎻?榪?鏄惁蹇呴』 緙虹渷鍊?
銆銆url url鍦板潃 鏄?鏃?
銆銆context /鍚庤窡鏈湴web搴旂敤紼嬪簭鐨勫悕瀛?鍚?褰撳墠搴旂敤紼嬪簭
銆銆charEncoding 鐢ㄤ簬瀵煎叆鏁版嵁鐨勫瓧絎﹂泦 鍚?ISO-8859-1
銆銆var 鎺ュ彈澶勭悊榪囩殑url鍙橀噺鍚嶏紝璇ュ彉閲忓瓨鍌╱rl 鍚?杈撳嚭鍒伴〉
銆銆scope 瀛樺偍url鐨勫彉閲忓悕鐨勫彉閲忚寖鍥?鍚?page
銆銆渚嬪瓙錛?
銆銆<c:import url="http://www.url.com/edit.js" var="newsfeed"/>
銆銆灝唘rl http://www.url.com/edit.js鍖呭惈鍒板綋鍓嶉〉鐨勫綋鍓嶄綅緗紝騫跺皢url淇濆瓨鍒皀ewsfeed鍙橀噺涓?
銆銆<a href="<c:url url="/index.jsp"/>"/>
銆銆鍦ㄥ綋鍓嶉〉鐨勫綋鍓嶄綅緗緭鍑?lt;a />錛宧ttp://www.yourname.com鏄綋鍓嶉〉鐨勬墍鍦ㄧ殑浣嶇疆銆?br />
銆銆<c:redirect>
銆銆<c:redirect>鏍囩灝嗚姹傞噸鏂板畾鍚戝埌鍙﹀涓涓〉闈紝瀹冩湁浠ヤ笅灞炴?灞?鎬?鎻?榪?鏄惁蹇呴』 緙虹渷鍊?
銆銆url url鍦板潃 鏄?鏃?
銆銆context /鍚庤窡鏈湴web搴旂敤紼嬪簭鐨勫悕瀛?鍚?褰撳墠搴旂敤紼嬪簭
銆銆渚嬪瓙錛?
銆銆<c:redirect url="http://www.yourname.com/login.jsp"/>
銆銆灝嗚姹傞噸鏂板畾鍚戝埌http://www.yourname.com/login.jsp欏碉紝鐩稿綋浜巖esponse.setRedirect("http://www.yourname.com/login.jsp");
銆銆<c:param>
銆銆<c:param>鏍囩鐢ㄦ潵浼犻掑弬鏁扮粰涓涓噸瀹氬悜鎴栧寘鍚〉闈紝瀹冩湁浠ヤ笅灞炴?灞?鎬?鎻?榪?鏄惁蹇呴』 緙虹渷鍊?
銆銆name 鍦╮equest鍙傛暟涓緗殑鍙橀噺鍚?鏄?鏃?
銆銆value 鍦╮equest鍙傛暟涓緗殑鍙橀噺鍊?鍚?鏃?
銆銆渚嬪瓙錛?
銆銆<c:redirect url="login.jsp">
銆銆<c:param name="id" value="888"/>
銆銆</c:redirect>
銆銆灝嗗弬鏁?88浠d涓哄悕瀛椾紶閫掑埌login.jsp欏甸潰錛岀浉褰撲簬login.jsp?id=888銆銆