锘??xml version="1.0" encoding="utf-8" standalone="yes"?>亚洲一区AV无码少妇电影,亚洲伦理中文字幕,国产亚洲成av片在线观看http://m.tkk7.com/nikita/category/41654.htmlzh-cnFri, 11 Sep 2009 14:58:09 GMTFri, 11 Sep 2009 14:58:09 GMT60- 鍦⊿ervlet/JSP涓殑鍑犵鍙橀噺綾誨瀷http://m.tkk7.com/nikita/archive/2009/09/11/294784.htmlpicture talkpicture talkFri, 11 Sep 2009 12:30:00 GMThttp://m.tkk7.com/nikita/archive/2009/09/11/294784.htmlhttp://m.tkk7.com/nikita/comments/294784.htmlhttp://m.tkk7.com/nikita/archive/2009/09/11/294784.html#Feedback0http://m.tkk7.com/nikita/comments/commentRss/294784.htmlhttp://m.tkk7.com/nikita/services/trackbacks/294784.html婧愯嚜 :銆http://www.javaresearch.org/article/8465.htm
涓銆佸湪Servlet/JSP涓殑鍑犵鍙橀噺綾誨瀷
鍦ㄧ紪鍐橲ervlet/JSP紼嬪簭鏃訛紝瀵瑰疄渚嬪彉閲忎竴瀹氳灝忓績浣跨敤銆傚洜涓哄疄渚嬪彉閲忔槸闈炵嚎紼嬪畨鍏ㄧ殑銆?br />鍦⊿ervlet/JSP涓紝鍙橀噺鍙互褰掍負涓嬮潰鐨勫嚑綾伙細
1.聽綾誨彉閲?br />request錛宺esponse錛宻ession錛宑onfig錛宎pplication錛屼互鍙奐SP欏甸潰鍐呯疆鐨刾age,聽pageContext銆?br />鍏朵腑闄や簡application澶栵紝鍏跺畠閮芥槸綰跨▼瀹夊叏鐨勩?br />
2.聽瀹炰緥鍙橀噺
瀹炰緥鍙橀噺鏄疄渚嬫墍鏈夌殑錛屽湪鍫嗕腑鍒嗛厤銆傚湪Servlet/JSP瀹瑰櫒涓紝涓鑸粎瀹炰緥鍖栦竴涓猄ervlet/JSP瀹炰緥錛?br />鍚姩澶氫釜璇ュ疄渚嬬殑綰跨▼鏉ュ鐞嗚姹傘傝屽疄渚嬪彉閲忔槸璇ュ疄渚嬫墍鏈夌殑綰跨▼鎵鍏變韓錛屾墍浠ワ紝瀹炰緥鍙橀噺涓嶆槸綰跨▼瀹夊叏鐨勩?br />
3.聽灞閮ㄥ彉閲?br />灞閮ㄥ彉閲忓湪鍫嗘爤涓垎閰嶏紝鍥犱負姣忎竴涓嚎紼嬫湁鑷繁鐨勬墽琛屽爢鏍堬紝鎵浠ワ紝灞閮ㄥ彉閲忔槸綰跨▼瀹夊叏鐨勩?br />
浜屻佸湪Servlet/JSP涓殑澶氱嚎紼嬪悓姝ラ棶棰?/h3>
鍦↗SP涓紝浣跨敤瀹炰緥鍙橀噺瑕佺壒鍒皚鎱庛傞鍏堣鐪嬩笅闈㈢殑浠g爜錛?br />- //聽instanceconcurrenttest.jsp
- <%@聽page聽contentType="text/html;charset=GBK"聽%>
- <%!
- 聽聽聽聽//瀹氫箟瀹炰緥鍙橀噺
- 聽聽聽聽String聽username;
- 聽聽聽聽String聽password;
- 聽聽聽聽java.io.PrintWriter聽output;
- %>
- <%
- 聽聽聽聽//浠巖equest涓幏鍙栧弬鏁?/font>
- 聽聽聽聽username聽=聽request.getParameter("username");
- 聽聽聽聽password聽=聽request.getParameter("password");
- 聽聽聽聽output聽=聽response.getWriter();
- 聽聽聽聽showUserInfo();聽聽聽聽
- %>
- <%!
- 聽聽聽聽public聽void聽showUserInfo()聽{
- 聽聽聽聽聽聽聽聽//涓轟簡紿佸嚭騫跺彂闂錛屽湪榪欏効棣栧厛鎵ц涓涓垂鏃舵搷浣?/font>
- 聽聽聽聽聽聽聽聽int聽i聽=0;
- 聽聽聽聽聽聽聽聽double聽sum聽=聽0.0;
- 聽聽聽聽聽聽聽聽while聽(i++聽<聽200000000)聽{
- 聽聽聽聽聽聽聽聽聽聽聽聽sum聽+=聽i;
- 聽聽聽聽聽聽聽聽}
- 聽聽聽聽聽聽聽聽
- 聽聽聽聽聽聽聽聽output.println(Thread.currentThread().getName()聽+聽"<br>");
- 聽聽聽聽聽聽聽聽output.println("username:"聽+聽username聽+聽"<br>");
- 聽聽聽聽聽聽聽聽output.println("password:"聽+聽password聽+聽"<br>");
- 聽聽聽聽}
- %>
鍦ㄨ繖涓〉闈腑錛岄鍏堝畾涔変簡涓や釜瀹炰緥鍙橀噺錛寀sername鍜宲assword銆傜劧鍚庡湪浠巖equest涓幏鍙栬繖涓や釜鍙傛暟錛屽茍璋冪敤showUserInfo()鏂規硶灝嗚姹傜敤鎴風殑淇℃伅鍥炴樉鍦ㄨ瀹㈡埛鐨勬祻瑙堝櫒涓娿傚湪涓涓敤鎴瘋闂槸錛屼笉瀛樺湪闂銆備絾鍦ㄥ涓敤鎴峰茍鍙戣闂椂錛屽氨浼氬嚭鐜板叾瀹冪敤鎴風殑淇℃伅鏄劇ず鍦ㄥ彟澶栦竴浜涚敤鎴風殑嫻忚鍣ㄤ笂鐨勯棶棰樸傝繖鏄竴涓弗閲嶇殑闂銆備負浜嗙獊鍑哄茍鍙戦棶棰橈紝渚夸簬嫻嬭瘯銆佽瀵燂紝鎴戜滑鍦ㄥ洖鏄劇敤鎴蜂俊鎭椂鎵ц浜嗕竴涓ā鎷熺殑璐規椂鎿嶄綔錛屾瘮濡傦紝涓嬮潰鐨勪袱涓敤鎴峰悓鏃惰闂紙鍙互鍚姩涓や釜IE嫻忚鍣紝鎴栬呭湪涓ゅ彴鏈哄櫒涓婂悓鏃惰闂級錛?br />a錛毬犅犅犅?a href="http://localhost:8080/instanceconcurrenttest.jsp?username=a&password=123">http://localhost:8080/instanceconcurrenttest.jsp?username=a&password=123
b錛毬犅犅犅?a href="http://localhost:8080/instanceconcurrenttest.jsp?username=b&password=456">http://localhost:8080/instanceconcurrenttest.jsp?username=b&password=456
濡傛灉a鐐瑰嚮閾炬帴鍚庯紝b鍐嶇偣鍑婚摼鎺ワ紝閭d箞錛宎灝嗚繑鍥炰竴涓┖鐧藉睆騫曪紝b鍒欏緱鍒癮浠ュ強b涓や釜綰跨▼鐨勮緭鍑恒傝鐪嬩笅闈㈢殑灞忓箷鎴浘錛?br />
聽
鍥?錛歛鐨勫睆騫?br />
聽
鍥?錛歜鐨勫睆騫?br />
浠庤繍琛岀粨鏋滅殑鎴浘涓婂彲浠ョ湅鍒幫紝Web鏈嶅姟鍣ㄥ惎鍔ㄤ簡涓や釜綰跨▼鍒嗗埆鏉ュ鐞嗘潵鑷猘鍜宐鐨勮姹傦紝浣嗘槸鍦╝鍗村緱鍒頒竴涓┖鐧界殑灞忓箷銆傝繖鏄洜涓轟笂闈㈢▼搴忎腑鐨刼utput,聽username鍜宲assword閮芥槸瀹炰緥鍙橀噺錛屾槸鎵鏈夌嚎紼嬪叡浜殑銆傚湪a璁塊棶璇ラ〉闈㈠悗錛屽皢output璁劇疆涓篴鐨勮緭鍑猴紝username,password鍒嗗埆緗負a鐨勪俊鎭紝鑰屽湪a鎵цprintUserInfo()杈撳嚭username鍜宲assword淇℃伅鍓嶏紝b鍙堣闂簡璇ラ〉闈紝鎶妘sername鍜宲assword緗負浜哹鐨勪俊鎭紝騫舵妸杈撳嚭output鎸囧悜鍒頒簡b銆傞殢鍚巃鐨勭嚎紼嬫墦鍗版椂錛屽氨鎵撳嵃鍒頒簡b鐨勫睆騫曚簡錛屽茍涓旓紝a鐨勭敤鎴峰悕鍜屽瘑鐮佷篃琚玝鐨勫彇浠c傝鍙傚姞涓嬪浘鎵紺猴細
聽
鍥?錛歛銆乥涓や釜綰跨▼鐨勬椂闂寸嚎
鑰屽疄闄呯▼搴忎腑錛岀敱浜庤緗疄渚嬪彉閲忥紝浣跨敤瀹炰緥鍙橀噺榪欎袱涓椂闂寸偣闈炲父鎺ヨ繎錛屾墍浠ワ紝鍍忔湰渚嬬殑鍚屾闂騫舵病鏈夎繖涔堢獊鍑猴紝鍙兘浼氬伓灝斿嚭鐜幫紝浣嗚繖鍗存洿鍔犲叿鏈夊嵄闄╂э紝涔熸洿鍔犻毦浜庤皟璇曘?br />
鍚屾牱錛屽浜嶴ervlet涔熷瓨鍦ㄥ疄渚嬪彉閲忕殑澶氱嚎紼嬮棶棰橈紝璇風湅涓婇潰欏甸潰鐨凷ervlet鐗堬細
- //聽InstanceConcurrentTest.java
- import聽javax.servlet.*;
- import聽javax.servlet.http.*;
- import聽java.io.PrintWriter;
- public聽class聽InstanceConcurrentTest聽extends聽HttpServlet聽
- {
- 聽聽聽聽String聽username;
- 聽聽聽聽String聽password;
- 聽聽聽聽PrintWriter聽out;
- 聽聽聽聽public聽void聽doGet(HttpServletRequest聽request,聽HttpServletResponse聽response)聽
- 聽聽聽聽聽聽聽聽聽throws聽ServletException,java.io.IOException
- 聽聽聽聽{
- 聽聽聽聽聽聽聽聽//浠巖equest涓幏鍙栧弬鏁?/font>
- 聽聽聽聽聽聽聽聽username聽=聽request.getParameter("username");
- 聽聽聽聽聽聽聽聽password聽=聽request.getParameter("password");
- 聽聽聽聽聽聽聽聽System.out.println(Thread.currentThread().getName()聽+聽
- 聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽"聽|聽set聽username:"聽+聽username);
- 聽聽聽聽聽聽聽聽out聽=聽response.getWriter();
- 聽聽聽聽聽聽聽聽showUserInfo();聽聽聽聽
- 聽聽聽聽}
- 聽聽聽聽public聽void聽showUserInfo()聽{
- 聽聽聽聽聽聽聽聽//涓轟簡紿佸嚭騫跺彂闂錛屽湪榪欏効棣栧厛鎵ц涓涓垂鏃舵搷浣?/font>
- 聽聽聽聽聽聽聽聽int聽i聽=0;
- 聽聽聽聽聽聽聽聽double聽sum聽=聽0.0;
- 聽聽聽聽聽聽聽聽while聽(i++聽<聽200000000)聽{
- 聽聽聽聽聽聽聽聽聽聽聽聽sum聽+=聽i;
- 聽聽聽聽聽聽聽聽}
- 聽聽聽聽聽聽聽聽out.println("thread:"聽+聽Thread.currentThread().getName());
- 聽聽聽聽聽聽聽聽out.println("username:"+聽username);
- 聽聽聽聽聽聽聽聽out.println("password:"聽+聽password);
- 聽聽聽聽}
- }
涓夈佽В鍐蟲柟妗?/h3>
1.聽浠ュ崟綰跨▼榪愯Servlet/JSP
鍦↗SP涓紝閫氳繃璁劇疆錛?lt;%@聽page聽isThreadSafe="false"聽%>錛屽湪Servlet涓紝閫氳繃瀹炵幇javax.servlet.SingleThreadModel錛屾鏃禬eb瀹瑰櫒灝嗕繚璇丣SP鎴朣ervlet瀹炰緥浠ュ崟綰跨▼鏂瑰紡榪愯銆?br />
閲嶈鎻愮ず錛氬湪嫻嬭瘯涓彂鐜幫紝Tomcat聽4.1.17涓嶈兘姝g‘鏀寔isThreadSafe灞炴э紝鎵浠ワ紝鎸囧畾isTheadSafe涓篺alse鍚庯紝鍦═omcat聽4.1.17涓粛鐒跺嚭鐜板綰跨▼闂錛岃繖鏄疶omcat聽4.1.17鐨凚ug銆傚湪Tomcat聽3.3.1鍜孯esin聽2.1.5涓祴璇曢氳繃銆?/b>
2.聽鍘婚櫎瀹炰緥鍙橀噺錛岄氳繃鍙傛暟浼犻?/h4>
浠庝笂闈㈢殑鍒嗘瀽鍙錛屽簲璇ュ湪Servlet/JSP涓敖閲忛伩鍏嶄嬌鐢ㄥ疄渚嬪彉閲忋傛瘮濡傦紝涓嬮潰鐨勪慨姝d唬鐮侊紝鍘婚櫎浜嗗疄渚嬪彉閲忥紝閫氳繃瀹氫箟灞閮ㄥ彉閲忥紝騫跺弬鏁拌繘琛屼紶閫掋傝繖鏍鳳紝鐢變簬灞閮ㄥ彉閲忔槸鍦ㄧ嚎紼嬬殑鍫嗘爤涓繘琛屽垎閰嶇殑錛屾墍浠ユ槸綰跨▼瀹夊叏鐨勩備笉浼氬嚭鐜板綰跨▼鍚屾鐨勯棶棰樸備唬鐮佸涓嬶細
- <%@聽page聽contentType="text/html;charset=GBK"聽%>
- <%
- 聽聽聽聽//浣跨敤灞閮ㄥ彉閲?/font>
- 聽聽聽聽String聽username;
- 聽聽聽聽String聽password;
- 聽聽聽聽java.io.PrintWriter聽output;
- 聽聽聽聽//浠巖equest涓幏鍙栧弬鏁?/font>
- 聽聽聽聽username聽=聽request.getParameter("username");
- 聽聽聽聽password聽=聽request.getParameter("password");
- 聽聽聽聽output聽=聽response.getWriter();
- 聽聽聽聽showUserInfo(output,聽username,聽password);聽聽聽聽
- %>
- <%!
- 聽聽聽聽public聽void聽showUserInfo(java.io.PrintWriter聽_output,聽
- 聽聽聽聽聽聽聽聽聽String聽_username,聽String聽_password)聽{
- 聽聽聽聽聽聽聽聽//涓轟簡紿佸嚭騫跺彂闂錛屽湪榪欏効棣栧厛鎵ц涓涓垂鏃舵搷浣?/font>
- 聽聽聽聽聽聽聽聽int聽i聽=0;
- 聽聽聽聽聽聽聽聽double聽sum聽=聽0.0;
- 聽聽聽聽聽聽聽聽while聽(i++聽<聽200000000)聽{
- 聽聽聽聽聽聽聽聽聽聽聽聽sum聽+=聽i;
- 聽聽聽聽聽聽聽聽}
- 聽聽聽聽聽聽聽聽
- 聽聽聽聽聽聽聽聽_output.println(Thread.currentThread().getName()聽+聽"<br>");
- 聽聽聽聽聽聽聽聽_output.println("username:"聽+聽_username聽+聽"<br>");
- 聽聽聽聽聽聽聽聽_output.println("password:"聽+聽_password聽+聽"<br>");
- 聽聽聽聽}
- %>
娉細鏈夌殑璧勬枡涓婃寚鍑哄湪printUserInfo()鏂規硶鎴栬呭疄渚嬪彉閲忕殑鐩稿叧鎿嶄綔璇彞涓婁嬌鐢╯ynchronized鍏抽敭瀛楄繘琛屽悓姝ワ紝浣嗚繖鏍峰茍涓嶈兘瑙e喅澶氱嚎紼嬬殑闂銆傚洜涓猴紝榪欐牱铏界劧鍙互浣垮瀹炰緥鍙橀噺鐨勬搷浣滀唬鐮佽繘琛屽悓姝ワ紝浣嗗茍涓嶈兘闃繪涓涓嚎紼嬩嬌鐢ㄥ彟澶栦竴涓嚎紼嬩慨鏀瑰悗鐨勨滆剰鐨勨濆疄渚嬪彉閲忋傛墍浠ワ紝闄や簡闄嶄綆榪愯鏁堢巼澶栵紝涓嶄細璧峰埌棰勬湡鏁堟灉銆?br />

]]>
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