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						<strong>涓轟粈涔圙enericServlet鍦╥nit(ServletConfig config)鍩虹涓婂鍔犱簡涓�涓猧nit()鏂規硶錛?/strong>銆�<br />銆�<br />銆�銆�init()鏂規硶琚獹enericServlet.init(ServletConfig config)鏂規硶璋冪敤銆?br />銆�銆�<br />銆�銆�init()鏂規硶鏂逛究浜嗗紑鍙戜漢鍛樺畾鍒禨ervlet鐨勫垵濮嬪寲錛岃�屾棤欏誨幓緇存姢ServletConfig瀵硅薄鐨勫瓨鍌ㄥ伐浣溿�?br />銆�銆�<br />銆�銆�閲嶅啓GenericServlet.init(ServletConfig config)蹇呴』瑕佹樉紺虹殑璋冪敤super.init(config)鏂規硶銆?br />銆�銆�<br />銆�銆�<b>ServletContext.getContect(java.lang.String uripath)鐨勪綔鐢ㄦ槸浠�涔堬紵</b><br />銆�銆�<br />銆�銆�榪斿洖鍚屼竴Server涓寚瀹氱殑path瀵瑰簲鐨凷ervletContext瀵硅薄,閫氳繃璇ュ璞″彲浠ュ疄鐜頒笌Server涓殑鍏朵粬Context鎵撲氦閬撱�?br />銆�銆�<br />銆�銆�uripath蹇呴』鏄互"/"寮�濮嬶紙璇ヨ礬寰勭殑鍚箟鏄浉瀵逛簬鏁翠釜Servlet鏂囨。鐨勬牴璺緞錛岃�屼笉鏄綋鍓峉ervletContext鐨勬牴璺緞錛夈�?br />銆�銆�<br />銆�銆�<b>Servlet鐢熷懡鍛ㄦ湡鏄粈涔堬紵</b><br />銆�銆�<br />銆�銆�涓�鑸殑Servlet(GenericServlet,鍗充笌鍗忚鏃犲叧鐨凷ervlet)鐨勭敓鍛藉懆鏈燂細init() --&gt; GenericServlet.service(ServletRequest req, ServletResponse res) --&gt; destroy.<br />銆�銆�<br />銆�銆�HttpServlet鐨勭敓鍛藉懆鏈? init() --&gt; GenericServlet.service(ServletRequest req, ServletResponse res)---&gt; service(HttpServletRequest req, HttpServletResponse resp) --&gt; doXXXX()--&gt;destroy.<br />銆�銆�<br />銆�銆�<b>鏈夋病鏈夊繀瑕侀噸鍐橤enericServlet.service()鏂規硶錛?/b><br />銆�銆�<br />銆�銆�瀵逛簬HttpServlet鏉ヨ娌℃湁蹇呰銆傚彧闇�瑕侀噸鍐欏畠鐨刣oXXXX()鏂規硶灝卞彲浠ヤ簡銆侶ttpServlet涓璼ervice()鏂規硶浼氳嚜鍔ㄧ殑鏍規嵁鐢ㄦ埛璇鋒眰綾誨瀷鎶婅姹傝漿鍙戠粰鐩稿簲鐨刣oXXXX()鏂規硶錛堜緥濡俤oGet()鏂規硶錛夈�?br />銆�銆�<br />銆�銆�<b>ServletRequest.getReader()鍜孲ervletRequest.getInputStream()濡備綍浣跨敤錛?/b><br />銆�銆�<br />銆�銆�娉ㄦ剰涓や釜鏂規硶涓嶈兘鍚屾椂浣跨敤銆?br />銆�銆�<br />銆�銆�ServletRequest.getRealPath(String path)鏂規硶宸茬粡涓嶆帹鑽愪嬌鐢ㄣ�?br />銆�銆�<br />銆�銆�璇蜂嬌鐢⊿ervletContext.getRealPath(String path)鏂規硶銆?br />銆�銆�<br />銆�銆�<b>ServletResponse緙虹渷鐨勫瓧絎﹂泦(charset)鏄粈涔?</b><br /><br />銆�銆�ServletResponse緙虹渷鐨勫瓧絎﹂泦(charset)鏄疘SO-8859-1,鍙互閫氳繃setContentType(java.lang.String)鏂規硶鏀瑰彉鏂扮殑瀛楃闆嗐�?br />銆�銆�<br />銆�銆�渚嬪錛歴etContentType("text/html; charset=Shift_JIS").<br />銆�銆�<br />銆�銆�鍏充簬瀛楃闆嗕俊鎭紝鍙互嫻忚RFC 2045<br />銆�銆�<br />銆�銆�<b>HttpServletRequest.getRequestURI()鍜孒ttpServletRequest.getRequestURL()鍖哄埆鏄粈涔?</b>銆�<br />銆�<br />銆�銆�request.getRequestURI() 榪斿洖鍊肩被浼鹼細/xuejava/requestdemo.jsp<br />銆�銆�<br />銆�銆�request.getRequestURL() 榪斿洖鍊肩被浼鹼細http://localhost:8080/xuejava/requestdemo.jsp<br />銆�銆�<br />銆�銆�<b>HttpServletRequest.encodeURL()鍜孒ttpServletRequest.encodeRedirectURL(()鍖哄埆鏄粈涔?涓轟粈涔堣鏈変袱涓笉鍚岀殑鏂規硶鍛紵</b><br />銆�銆�<br />銆�銆�褰撶敤URL-rewriting鏂瑰紡鏉ョ鐞哠ession鐨勬椂鍊欙紝闇�瑕佺敤鍒頒互涓婄殑涓や釜鏂規硶銆?br />銆�銆�<br />銆�銆�涓や釜鏂規硶鐨勪笉鍚岀偣鏄細涓や釜鏂規硶紜畾鏄惁闇�瑕佸寘鍚玸ession ID鐨勯�昏緫涓嶅悓銆?br />銆�銆�<br />銆�銆�鍦ㄨ皟鐢℉ttpServletResponse.sendRedirect鍓嶏紝搴旇鍏堣皟鐢╡ncodeRedirectURL()鏂規硶錛屽惁鍒欏彲鑳戒細涓㈠けSesssion淇℃伅銆?...<br />銆�銆�<br />銆�銆�<b>濡備綍浣夸綘鐨凷ervlet鎴栬�匤SP瀹炵幇Single Thread Model?</b>銆�銆�<br /><br />銆�銆�瀵逛簬Servlet瀹炵幇javax.single.SingleThreadModel鎺ュ彛銆?br />銆�銆�<br />銆�銆�瀵逛簬JSP,鍦≒age Directive涓啓濡備笅鐨勮鍙?lt;%@ page isThreadSafe="false" %&gt;<br />銆�銆�<br />銆�銆�JSP Tag 鍜?JSP XML-based Tag<br />銆�銆�<br />銆�銆�...<br />銆�銆�<br />銆�銆�<b>濡備綍鎶婃煇涓�涓狫SP Page瀹氫箟鎴愪負Error Page?涓轟粈涔堣榪欐牱鍋氾紵</b><br />銆�銆�<br />銆�銆�瀹炵幇鏂規硶錛?&lt;%@ page isErrorPage="true" %&gt;<br />銆�銆�<br />銆�銆�涓轟粈涔堬紵 鍥犱負闇�瑕佽幏鍙朎xception 瀵硅薄錛堢己鐪佹儏鍐典笅錛屽湪JSP Page涓槸涓嶈兘鐩存帴浣跨敤鈥滈殣鍚璞♀�?exception鐨勶級銆?br />銆�銆�<br />銆�銆�<b>JSP Page鐨勬墽琛岄『搴忔槸濡備綍鐨勶紵</b><br />銆�銆�<br />銆�銆�JSP Page鐨勬墽琛岄『搴忓涓嬶細<br />銆�銆�<br />銆�銆�JSP Page Translation. JSP Page --&gt; Servlet source code.<br />銆�銆�JSP Page Compilation. Servlet source code --&gt; Servlet class.<br />銆�銆�Load Class(First time or the server restarted)<br />銆�銆�<br />銆�銆�Create instance(鍙兘浼氬緢澶氭錛屽鏋淛SP Page涓０鏄庝簡&lt;%@ page isThreadSafe="false" %&gt;)<br />銆�銆�<br />銆�銆�Call jspInit method錛堜竴鑸殑JSP Page閮芥病鏈夐噸鍐欒繖涓柟娉曪紝閲嶅啓闇�瑕佸湪澹版槑璇彞孌典腑錛夈�?br />銆�銆�<br />銆�銆�Call _jspService method錛堢被浼間笌涓�鑸琀ttpServlet鐨刣oGet鍜宒oPost鏂規硶錛屼絾鏄彲浠ュ悓鏃剁敤鏉ュ鐞哖ost鍜孏etq璇鋒眰錛夈�?br />銆�銆�<br />銆�銆�Call jspDestroy method錛圫erver鍦ㄥ嵏杞絊ervet鐨勬椂鍊欙紝渚嬪褰揝ervlet寰堜箙娌℃湁浣跨敤鐨勬儏鍐碉級銆?br />銆�銆�<br />銆�銆�<b>JSP Page涓湁鍝簺闅愬惈瀵硅薄(Implicity Object)?鍚勮嚜鐨勭被鍨嬪拰浣滅敤鏄粈涔堬紵</b><br />銆�銆�<br />銆�銆�request --<br />銆�銆�reponse --<br />銆�銆�session --<br />銆�銆�application --<br />銆�銆�out --<br />銆�銆�page --<br />銆�銆�pagecontext --<br />銆�銆�exception -- 鍙湁鍦ㄥ綋鍓岼SP Page涓篍rror Page鐨勬椂鍊欐墠鏈夋晥銆?br />銆�銆�config --<br />銆�銆�<br />銆�銆�<b>&lt;jsp:include page="/foo/foo.jsp" %&gt; 鍜?&lt;@ include file="/foo/foo.jsp" %&gt;鐨勫尯鍒槸浠�涔堬紵</b><br />銆�銆�<br />銆�銆�&lt;jsp:include ... -- request time.<br />銆�銆�&lt;@ include ... -- Page translation time.<br />銆�銆�<br />銆�銆�<b>Servlets/JSP Container(Engine)鏈夊嚑縐嶈繍琛屾柟寮忥紵</b><br />銆�銆�<br />銆�銆�Standalone<br />銆�銆�Tomcat standalone mode<br />銆�銆�In-process<br />銆�銆�Tomcat running inside Apache Web Server.<br />銆�銆�Out-of-process<br />銆�銆�Apache + mod_jk + Tomcat<br />銆�銆�<br />銆�銆�Servlet,Servlet寮�鍙戜漢鍛橈紝Servlet API, Servlet Container鐨勫叧緋繪槸浠�涔堬紵<br />銆�銆�<br />銆�銆�Servlet,Servlet寮�鍙戜漢鍛?---&gt;Servlet API --&gt; Servlet Container<br />銆�銆�The parts of an HTTP message<br />銆�銆�<br />銆�銆�Message part Description<br />銆�銆�The initial line錛?Specifies the purpose of the request or response message<br />銆�銆�渚嬪瓙錛欸ET /reports/sales/index.html HTTP/1.0<br />銆�銆�The header section:Specifies the meta-information, such as size, type, and encoding,<br />銆�銆�about the content of the message<br />銆�銆�A blank line:<br />銆�銆�An optional message body: The main content of the request or response message<br />銆�銆�<br />銆�銆�涓嬮潰鏄竴涓猂esponse鐨勪緥瀛愶細<br />銆�銆�<br />銆�銆�HTTP/1.0 200 OK<br />銆�銆�Date: Tue, 01 Dec 2001 23:59:59 GMT<br />銆�銆�Content-Type: text/html<br />銆�銆�Content-Length: 52<br />銆�銆�<br />銆�銆�&lt;html&gt;<br />銆�銆�&lt;body&gt;<br />銆�銆�&lt;h1&gt;Hello, John!&lt;/h1&gt;<br />銆�銆�&lt;/body&gt;<br />銆�銆�&lt;/html&gt;<br />銆�銆�<br />銆�銆�<b>HTTP瑙勮寖涓畾涔変簡鍝簺鏂規硶錛熷悇鑷湁浠�涔堢敤閫旓紵</b><br />銆�銆�<br />銆�銆�GET<br />銆�銆�HEAD<br />銆�銆�POST<br />銆�銆�浠?Http 1.1瑙勮寖寮�濮嬶紝澧炲姞浜嗕互涓嬬殑鏂規硶:<br />銆�銆�<br />銆�銆�PUT<br />銆�銆�OPTIONS<br />銆�銆�TRACE<br />銆�銆�DELETE<br />銆�銆�CONNECT<br />銆�銆�<br />銆�銆�ServetRequest涓負浠�涔堣瀹氫箟:getContentType(),getContentLength()鏂規硶銆?br />銆�銆�<br />銆�銆�鏍規嵁HTTP鍗忚瑙勮寖錛孯equest 鍜?Response涓�鏍蜂篃鏈夎繖浜涘繀涓嶅彲灝戠殑鍐呭錛?br />銆�銆�<br />銆�銆�鎵�浠ラ渶瑕侀鍏堜簡瑙?HTTP Message鐨勬蹇靛拰鍏跺唴瀹圭殑鏍煎紡錛岃繖浜涗笢瑗垮浜嶳equest鍜孯eponse鏄竴鏍風殑銆?br />銆�銆�<br />銆�銆�瀵逛簬GET鏂瑰紡鍙戦�佺殑璇鋒眰錛屽叾鍐呭綾誨瀷涓猴細null<br />銆�銆�<br />銆�銆�瀵逛簬POST鏂瑰紡鍙戦�佺殑璇鋒眰錛屽叾鍐呭綾誨瀷涓猴細application/x-www-form-urlencoded<br />銆�銆�<br />銆�銆�POST鏂瑰紡鍙戦�佽姹傜殑鍐呭綾諱技浜庯細username=xuejava.<br />銆�銆�<br />銆�銆�RequestDispatcher.forward()鍜孒ttpServletResponse.sendRedirect()鐨勫尯鍒槸浠�涔堬紵<br />銆�銆�<br />銆�銆�RequestDispatcher.forward()鏄湪鏈嶅姟鍣ㄧ榪愯錛汬ttpServletResponse.sendRedirect()鏄�氳繃鍚戝鎴鋒祻瑙堝櫒鍙戦�佸懡浠ゆ潵瀹屾垚銆?br />銆�銆�<br />銆�銆�鎵�浠equestDispatcher.forward()瀵逛簬嫻忚鍣ㄦ潵璇存槸鈥滈�忔槑鐨勨�濓紱鑰孒ttpServletResponse.sendRedirect()鍒欎笉鏄�?br />銆�銆�<br />銆�銆�鍙﹀錛岃繕瑕佹敞鎰廟equestDispatcher.forward()鍦ㄨ皟鐢ㄧ殑鏃跺�橰esponse涓嶈兘宸茬粡Commit浜嗭紙Response.isCommitted()錛夈�?br />銆�銆�<br />銆�銆�ServletContext.getRequestDispatcher(String url)鍜孲ervletRequest.getRequestDispatcher(String url)鐨勫尯鍒槸浠�涔堬紵涓轟粈涔堬紵<br />銆�銆�<br />銆�銆�ServletContext.getRequestDispatcher(String url)涓殑url鍙兘浣跨敤緇濆璺緞錛涜�孲ervletRequest.getRequestDispatcher(String url)涓殑url鍙互浣跨敤鐩稿璺緞銆?br />銆�銆�<br />銆�銆�鍥犱負ServletRequest鍏鋒湁鐩稿璺緞鐨勬蹇碉紱鑰孲ervletContext瀵硅薄鏃犳姒傚康銆?br />銆�銆�<br />銆�銆�<b>濡備綍鎶婅姹傝漿縐誨埌鍙﹀涓�涓猈eb App涓殑鏌愪釜鍦板潃錛?/b><br />銆�銆�<br />銆�銆�ServletContext.getRequestDispatcher(String url)鍜孲ervletRequest.getRequestDispatcher(String url)鍙兘鎶婅姹傝漿縐誨埌鍚屼竴涓猈eb App涓殑鍦板潃銆?br />銆�銆�<br />銆�銆�濡傛灉闇�瑕佹妸璇鋒眰杞Щ鍒板彟澶栦竴涓猈eb App涓殑鏌愪釜鍦板潃錛屽彲浠ユ寜涓嬮潰鐨勫仛娉曪細<br />銆�銆�<br />銆�銆�1. 鑾峰緱鍙﹀涓�涓猈eb App鐨凷ervletConext瀵硅薄(currentServletContext.getContext(uripath)).<br />銆�銆�<br />銆�銆�2. 璋冪敤ServletContext.getRequestDispatcher(String url)鏂規硶銆?br /></font>
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<a href="http://" target="_blank">石河子市</a>|
<a href="http://" target="_blank">铜川市</a>|
<a href="http://" target="_blank">贵阳市</a>|
<a href="http://" target="_blank">信宜市</a>|
<a href="http://" target="_blank">寿阳县</a>|
<a href="http://" target="_blank">峡江县</a>|
<a href="http://" target="_blank">正阳县</a>|
<a href="http://" target="_blank">谷城县</a>|
<a href="http://" target="_blank">钟山县</a>|
<a href="http://" target="_blank">汕头市</a>|
<a href="http://" target="_blank">江门市</a>|
<a href="http://" target="_blank">长乐市</a>|
<a href="http://" target="_blank">庐江县</a>|
<a href="http://" target="_blank">青川县</a>|
<a href="http://" target="_blank">莱西市</a>|
<a href="http://" target="_blank">会宁县</a>|
<a href="http://" target="_blank">绥江县</a>|
<a href="http://" target="_blank">永仁县</a>|
<a href="http://" target="_blank">瓦房店市</a>|
<a href="http://" target="_blank">琼中</a>|
<a href="http://" target="_blank">额敏县</a>|
<a href="http://" target="_blank">巨鹿县</a>|
<a href="http://" target="_blank">闵行区</a>|
<a href="http://" target="_blank">长乐市</a>|
<a href="http://" target="_blank">汨罗市</a>|
<a href="http://" target="_blank">蓝田县</a>|
<a href="http://" target="_blank">庄河市</a>|
<a href="http://" target="_blank">方城县</a>|
<a href="http://" target="_blank">独山县</a>|
<a href="http://" target="_blank">元朗区</a>|
<a href="http://" target="_blank">三河市</a>|
<a href="http://" target="_blank">淮南市</a>|
<a href="http://" target="_blank">五指山市</a>|
<a href="http://" target="_blank">博白县</a>|
<a href="http://" target="_blank">海兴县</a>|
<a href="http://" target="_blank">青铜峡市</a>|
<a href="http://" target="_blank">多伦县</a>|
<a href="http://" target="_blank">高雄市</a>|
<a href="http://" target="_blank">中方县</a>|
<a href="http://" target="_blank">建宁县</a>|
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