锘??xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"><channel><title>&#x4E45;&#x4E45;&#x4E45;&#x4E45;&#x4E45;&#x4E45;&#x4E45;&#x4E45;&#x4E45;&#x4E45;&#x4E45;&#x591C;&#x2C;&#x7C89;&#x5AE9;&#x6B27;&#x7F8E;&#x4E00;&#x533A;&#x4E8C;&#x533A;&#x4E09;&#x533A;&#x2C;&#x6B27;&#x7F8E;&#x9AD8;&#x6E05;&#x6027;&#x68;&#x64;&#x76;&#x69;&#x64;&#x65;&#x6F;&#x73;&#x65;&#x78;</title><link>http://www.aygfsteel.com/hjh/category/27292.html</link><description>浠樺嚭鎬繪槸鏈夊洖鎶ョ殑
take action follow your heart , or follow your head</description><language>zh-cn</language><lastBuildDate>Thu, 22 Nov 2007 17:23:39 GMT</lastBuildDate><pubDate>Thu, 22 Nov 2007 17:23:39 GMT</pubDate><ttl>60</ttl><item><title>servlet/jsp 閲嶅畾鍚?/title><link>http://www.aygfsteel.com/hjh/archive/2007/11/16/160937.html</link><dc:creator>涓嶉渶瑕佽В閲?/dc:creator><author>涓嶉渶瑕佽В閲?/author><pubDate>Fri, 16 Nov 2007 02:40:00 GMT</pubDate><guid>http://www.aygfsteel.com/hjh/archive/2007/11/16/160937.html</guid><wfw:comment>http://www.aygfsteel.com/hjh/comments/160937.html</wfw:comment><comments>http://www.aygfsteel.com/hjh/archive/2007/11/16/160937.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/hjh/comments/commentRss/160937.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/hjh/services/trackbacks/160937.html</trackback:ping><description><![CDATA[<p>閫氬父錛屽湪涓�涓璁¤壇濂界殑Web搴旂敤涓紝閮戒細(xì)緇煎悎浣跨敤Servlet鍜孞SP鎶�鏈�係ervlet鎺у埗涓氬姟嫻佽漿錛孞SP鍒欒礋璐ｄ笟鍔″鐞嗙粨鏋滅殑鏄劇ず銆傛鏃訛紝灝嗗ぇ閲忕敤鍒伴噸瀹氬悜鎶�鏈�?/p>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 閲嶅畾鍚戞妧鏈彲浠ュ垎涓轟袱綾伙紝涓�綾繪槸瀹㈡埛绔噸瀹氬悜錛屼竴綾繪槸鏈嶅姟鍣ㄧ閲嶅畾鍚戙�傚鎴風(fēng)閲嶅畾鍚戝彲浠ラ�氳繃璁劇疆鐗瑰畾鐨凥TTP澶達(dá)紝鎴栬�呭啓JavaScript鑴氭湰瀹炵幇銆傛湰鏂囦富瑕佹帰璁ㄦ湇鍔″櫒绔噸瀹氬悜鎶�鏈殑瀹炵幇銆?/p>
<p><br />
鏈嶅姟鍣ㄧ鐨勯噸瀹氬悜鐩稿叧綾?br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 鏈嶅姟鍣ㄧ鐨勯噸瀹氬悜鎶�鏈秹鍙?qiáng)鍒癹avax.servlet.ServletContext銆乯avax.servlet.RequestDispatcher銆乯avax.servlet.http.ServletRequest銆乯avax.servlet.http.ServletResponse絳夊嚑涓帴鍙ｃ�?br />
鏈嶅姟鍣ㄧ鐨勯噸瀹氬悜鏂瑰紡<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 鏈嶅姟鍣ㄧ鐨勯噸瀹氬悜鍙互鏈変袱縐嶆柟寮忥紝涓�鏄嬌鐢℉ttpServletResponse鐨剆endRedirect()鏂規(guī)硶錛屼竴鏄嬌鐢≧equestDispatcher鐨刦orward()鏂規(guī)硶銆備笅闈㈠榪欎袱縐嶆柟寮忚繘琛屼粙緇嶃�?/p>
<p>HttpServletResponse.sendRedirect()鏂規(guī)硶</p>
<p>HttpServletResponse鎺ュ彛瀹氫箟浜?jiǎn)鍙敤浜庤浆鍚戠殑sendRedirect()鏂規(guī)硶銆備唬鐮佸涓嬶細(xì)</p>
<p>public void sendRedirect(java.lang.String location)throws java.io.IOException</p>
<p><br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 榪欎釜鏂規(guī)硶灝嗗搷搴斿畾鍚戝埌鍙傛暟l(fā)ocation鎸囧畾鐨勩�佹柊鐨刄RL銆俵ocation鍙互鏄竴涓粷瀵圭殑URL錛屽response.sendRedirect("http://java.sun.com")涔熷彲浠ヤ嬌鐢ㄧ浉瀵圭殑URL銆傚鏋渓ocation浠?#8220;/&#8221;寮�澶達(dá)紝鍒欏鍣ㄨ涓虹浉瀵逛簬褰撳墠Web搴旂敤鐨勬牴錛屽惁鍒欙紝瀹瑰櫒灝嗚В鏋愪負(fù)鐩稿浜庡綋鍓嶈姹傜殑URL銆傝繖縐嶉噸瀹氬悜鐨勬柟娉曪紝灝嗗鑷村鎴風(fēng)嫻忚鍣ㄧ殑璇鋒眰URL璺寵漿銆備粠嫻忚鍣ㄤ腑鐨勫湴鍧�鏍忎腑鍙互鐪嬪埌鏂扮殑URL鍦板潃錛屼綔鐢ㄧ被浼間簬涓婇潰璁劇疆HTTP鍝嶅簲澶翠俊鎭殑瀹炵幇銆?/p>
<p>RequestDispatcher.forward()鏂規(guī)硶</p>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; RequestDispatcher鏄竴涓猈eb璧勬簮鐨勫寘瑁呭櫒錛屽彲浠ョ敤鏉ユ妸褰撳墠request浼犻�掑埌璇ヨ祫婧愶紝鎴栬�呮妸鏂扮殑璧勬簮鍖呮嫭鍒板綋鍓嶅搷搴斾腑銆俁equestDispatcher鎺ュ彛涓畾涔変簡(jiǎn)涓や釜鏂規(guī)硶錛屽弬瑙佸涓嬩唬鐮侊細(xì)</p>
<p>public interface RequestDispatcher {<br />
void forward(ServletRequest request, ServletResponse response);<br />
void include(ServletRequest request, ServletResponse response);<br />
}</p>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; forward()鏂規(guī)硶灝嗗綋鍓嶇殑request鍜宺esponse閲嶅畾鍚戝埌璇equestDispacher鎸囧畾鐨勮祫婧愩�傝繖鍦ㄥ疄闄呴」鐩腑澶ч噺浣跨敤錛屽洜涓哄畬鎴愪竴涓笟鍔℃搷浣滃線寰�闇�瑕佽法瓚婂涓楠わ紝姣忎竴姝ラ瀹屾垚鐩稿簲鐨勫鐞嗗悗錛岃漿鍚戝埌涓嬩竴涓楠ゃ�傛瘮濡傦紝閫氬父涓氬姟澶勭悊鍦⊿ervlet涓鐞嗭紝澶勭悊鐨勭粨鏋滆漿鍚戝埌涓�涓狫SP欏甸潰榪涜鏄劇ず銆傝繖鏍風(fēng)湅璧鋒潵綾諱技浜嶴ervlet閾劇殑鍔熻兘錛屼絾鏄繕鏈変竴浜涘尯鍒�備竴涓猂equestDispatcher瀵硅薄鍙互鎶婅姹傚彂閫佸埌浠繪剰涓�涓湇鍔″櫒璧勬簮錛岃�屼笉浠呬粎鏄彟澶栦竴涓猄ervlet銆?include()鏂規(guī)硶灝嗘妸Request Dispatcher璧勬簮鐨勮緭鍑哄寘鍚埌褰撳墠杈撳嚭涓�?/p>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 娉ㄦ剰錛屽彧鏈夊湪灝氭湭鍚戝鎴風(fēng)杈撳嚭鍝嶅簲鏃舵墠鍙互璋冪敤forward()鏂規(guī)硶錛屽鏋滈〉闈㈢紦瀛樹笉涓虹┖錛屽湪閲嶅畾鍚戝墠灝嗚嚜鍔ㄦ竻闄ょ紦瀛樸�傚惁鍒欏皢鎶涘嚭涓�涓狪llegalStateException寮傚父銆?/p>
<p><br />
濡備綍寰楀埌RequestDispatcher</p>
<p><br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 鏈変笁縐嶆柟娉曞彲浠ュ緱鍒癛equest Dispatcher瀵硅薄銆?/p>
<p>1.javax.servlet. ServletRequest鐨刧etRequestDispatcher(String path)鏂規(guī)硶錛屽叾涓璸ath鍙互鏄浉瀵硅礬寰勶紝浣嗕笉鑳借秺鍑哄綋鍓峉ervlet涓婁笅鏂囥�傚鏋減ath浠?#8220;/&#8221;寮�澶達(dá)紝鍒欒В鏋愪負(fù)鐩稿浜庡綋鍓嶄笂涓嬫枃鐨勬牴銆?/p>
<p>2.javax.servlet. ServletContext鐨刧etRequestDispatcher(String path)鏂規(guī)硶錛屽叾涓璸ath蹇呴』浠?#8220;/&#8221;寮�澶達(dá)紝璺緞鐩稿浜庡綋鍓嶇殑Servlet涓婁笅鏂囥�傚彲浠ヨ皟鐢⊿ervletContext鐨刧etContext(String uripath)寰楀埌鍙︿竴涓猄ervlet涓婁笅鏂囷紝騫跺彲浠ヨ漿鍚戝埌澶栭儴涓婁笅鏂囩殑涓�涓湇鍔″櫒璧勬簮閾炬帴銆?/p>
<p>3.浣跨敤javax.servlet. ServletContext鐨刧etNamedDispatcher(String name)寰楀埌鍚嶄負(fù)name鐨勪竴涓猈eb璧勬簮錛屽寘鎷琒ervlet鍜孞SP欏甸潰銆傝繖涓祫婧愮殑鍚嶅瓧鍦╓eb搴旂敤閮ㄧ講鎻忚堪鏂囦歡web.xml涓寚瀹氥�?br />
<br />
</p>
<p>榪欎笁縐嶆柟娉曠殑浣跨敤鏈夌粏寰殑宸埆銆傛瘮濡傦紝涓嬮潰鏄竴涓簲鐢ㄧ殑閰嶇疆鏂囦歡web.xml錛?/p>
<p>&lt;?xml version="1.0" ?&gt;<br />
&lt;!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN"<br />
"http://java.sun.com/j2ee/dtds/web-app_2_2.dtd"&gt;<br />
&lt;web-app&gt;<br />
&lt;servlet&gt;<br />
&lt;servlet-name&gt;FirstServlet&lt;/servlet-name&gt;<br />
&lt;servlet-class&gt;org. javaresearch.redirecttest.ServletOne&lt;/servlet-class&gt;<br />
&lt;/servlet&gt;<br />
&lt;servlet&gt;<br />
&lt;servlet-name&gt;SecondServlet&lt;/servlet-name&gt;<br />
&lt;servlet-class&gt;org.javaresearch. redirecttest.ServletTwo&lt;/servlet-class&gt;<br />
&lt;/servlet&gt;<br />
&lt;servlet-mapping&gt;<br />
&lt;servlet-name&gt;FirstServlet&lt;/servlet-name&gt;<br />
&lt;url-pattern&gt;/servlet/firstservlet/&lt;/url-pattern&gt;<br />
&lt;/servlet-mapping&gt;<br />
&lt;servlet-mapping&gt;<br />
&lt;servlet-name&gt;SecondServlet&lt;/servlet-name&gt;<br />
&lt;url-pattern&gt;/servlet/secondservlet/&lt;/url-pattern&gt;<br />
&lt;/servlet-mapping&gt;<br />
&lt;/web-app&gt;</p>
<p>&nbsp;</p>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 鍏朵腑瀹氫箟浜?jiǎn)涓や釜Servlet錛屽悕瀛楀垎鍒負(fù)FirstServlet鍜孲econdServlet錛屽搴旂殑綾誨垎鍒負(fù)org.javaresearch. redirecttest.ServletOne鍜宱rg. javaresearch.redirecttest.ServletTwo銆傚彲浠ュ湪嫻忚鍣ㄤ腑閫氳繃綾諱技浜庝笅闈㈢殑閾炬帴璁塊棶錛?/p>
<p>http://localhost:8080/servlet/firstservlet/</p>
<p>浣跨敤1涓柟娉曪紝渚嬪鍦╢irstservlet鍙互鍐欏叆涓嬮潰鐨勪唬鐮侊細(xì)</p>
<p>RequestDispatcher rd = request.getRequestDispatcher("secondservlet");<br />
rd.forward(request, response);</p>
<p>&nbsp;</p>
<p>姝ゆ椂鎺у埗鏉冨皢杞悜鍒扮浜屼釜Servlet浜?jiǎn)銆?/p>
<p>浣跨敤2涓殑鏂規(guī)硶錛屽彲浠ヤ粠Servlet Context涓緱鍒癛equestDispatcher浠ｇ爜濡備笅錛?/p>
<p>RequestDispatcher rd = getServletContext().getRequest<br />
Dispatcher("/servlet/secondservlet");<br />
rd.forward(request, response);</p>
<p>&nbsp;</p>
<p>浣跨敤3涓殑鏂規(guī)硶錛屼粠涓婇潰鐨剋eb. xml閰嶇疆鏂囦歡鍙互鐪嬪埌瀹氫箟浜?jiǎn)涓や釜Servlet錛屽悕瀛楀垎鍒負(fù)FirstServlet鍜孲econdServlet錛屾墍浠ュ彲浠ュ緱鍒板懡鍚嶇殑Dispatcher錛?/p>
<p>RequestDispatcher rd = getServletContext().getNamedDispatcher("SecondServlet");<br />
rd.forward(request, response);</p>
<p>&nbsp;</p>
<p>榪欐牱涔熷彲浠ラ噸瀹氬悜鍒癝econdServlet浜?jiǎn)銆?/p>
<p><br />
JSP欏甸潰涓殑閲嶅畾鍚?/p>
<p><br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; JSP鍦ㄨВ鏋愬悗緙栬瘧涓轟竴涓猄ervlet榪愯錛屾墍浠ュ湪JSP涓篃鍙互浣跨敤涓婇潰鐨勯噸瀹氬悜浠ｇ爜錛屽茍涓旓紝JSP榪樻彁渚涗簡(jiǎn)鏇翠究鍒╃殑鎿嶄綔錛屽涓嬶細(xì)</p>
<p>&lt;jsp:forward page= "nextpage.jsp"/&gt;</p>
<p>&nbsp;</p>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; JSP欏甸潰鎵ц鍒拌繖鍎匡紝灝嗙粓姝㈠綋鍓嶇殑澶勭悊錛屽皢鎺у埗鏉冧氦鐢眓extpage.jsp銆?/p>
<p><br />
濡備綍閫夋嫨</p>
<p><br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; RequestDispatcher.forward()鏂規(guī)硶鍜孒ttpServletResponse.sendRedirect()鏂規(guī)硶鐨勫尯鍒槸錛氬墠鑰呬粎鏄鍣ㄤ腑鎺у埗鏉冪殑杞悜錛屽湪瀹㈡埛绔祻瑙堝櫒鍦板潃鏍忎腑涓嶄細(xì)鏄劇ず鍑?guó)櫇{鍚戝悗鐨勫湴鍧�錛涘悗鑰呭垯鏄畬鍏ㄧ殑璺寵漿錛屾祻瑙堝櫒灝嗕細(xì)寰楀埌璺寵漿鐨勫湴鍧�錛屽茍閲嶆柊鍙戦�佽姹傞摼鎺ャ�傝繖鏍鳳紝浠庢祻瑙堝櫒鐨勫湴鍧�鏍忎腑鍙互鐪嬪埌璺寵漿鍚庣殑閾炬帴鍦板潃銆傛墍浠ワ紝鍓嶈�呮洿鍔犻珮鏁堬紝鍦ㄥ墠鑰呭彲浠ユ弧瓚抽渶瑕佹椂錛屽敖閲忎嬌鐢≧equest Dispatcher.forward()鏂規(guī)硶錛屽茍涓旓紝榪欐牱涔熸湁鍔╀簬闅愯棌瀹為檯鐨勯摼鎺ャ�傚湪鏈変簺鎯呭喌涓嬶紝姣斿錛岄渶瑕佽煩杞埌涓�涓叾瀹冩湇鍔″櫒涓婄殑璧勬簮錛屽垯蹇呴』浣跨敤HttpServletResponse.sendRequest()鏂規(guī)硶<br />
</p>
<p><br />
</p>
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<a href="http://" target="_blank">隆昌县</a>|
<a href="http://" target="_blank">东乌</a>|
<a href="http://" target="_blank">栾川县</a>|
<a href="http://" target="_blank">武强县</a>|
<a href="http://" target="_blank">卢氏县</a>|
<a href="http://" target="_blank">扎囊县</a>|
<a href="http://" target="_blank">右玉县</a>|
<a href="http://" target="_blank">固镇县</a>|
<a href="http://" target="_blank">辰溪县</a>|
<a href="http://" target="_blank">台北县</a>|
<a href="http://" target="_blank">临西县</a>|
<a href="http://" target="_blank">明水县</a>|
<a href="http://" target="_blank">九江市</a>|
<a href="http://" target="_blank">清流县</a>|
<a href="http://" target="_blank">延寿县</a>|
<a href="http://" target="_blank">辽中县</a>|
<a href="http://" target="_blank">天津市</a>|
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