{"id":239,"date":"2005-12-15T11:12:55","date_gmt":"2005-12-15T03:12:55","guid":{"rendered":"http:\/\/fdream.net\/blog\/article\/239.aspx"},"modified":"2006-03-26T19:03:45","modified_gmt":"2006-03-26T11:03:45","slug":"%e4%b9%9f%e8%ae%a8%e8%ae%ba%e4%b8%80%e4%b8%8bASP%e5%9c%a8%e7%ba%bf%e4%ba%ba%e6%95%b0%e7%bb%9f%e8%ae%a1%ef%bc%88%e4%b8%80%ef%bc%89","status":"publish","type":"post","link":"https:\/\/fdream.net\/blog\/article\/239","title":{"rendered":"\u4e5f\u8ba8\u8bba\u4e00\u4e0bASP\u5728\u7ebf\u4eba\u6570\u7edf\u8ba1\uff08\u4e00\uff09"},"content":{"rendered":"<p>ASP\u4e2d\u7edf\u8ba1\u5728\u7ebf\u4eba\u6570\u7684\u65b9\u6cd5\u82b1\u6837\u7e41\u591a\uff0c\u6211\u4e5f\u641e\u4e0d\u6e05\u695a\u6709\u51e0\u79cd ^_^\uff0c\u5076\u8fd9\u91cc\u4ecb\u7ecd\u4e09\u79cd\u5148\uff0c\u5982\u6709\u9519\u8bef\uff0c\u6b22\u8fce\u5404\u4f4d\u6279\u8bc4\u6307\u6b63\uff0c\u8fd8\u6709\u597d\u65b9\u6cd5\uff0c\u656c\u8bf7\u8865\u5145\uff01<\/p>\n<p>\u9996\u5148\u4ecb\u7ecd\u4e00\u79cd\u6700\u7b80\u5355\u7684\u65b9\u6cd5\uff0c\u5229\u7528 Application\u3001 session \u548c Global.asa \uff0c\u56e0\u4e3a\u5f53\u7528ASP\u5236\u4f5c\u7684\u7f51\u9875\u90fd\u5b58\u653e\u4e0eWWW\u670d\u52a1\u5668\u7684\u57fa\u70b9\u76ee\u5f55\u5e76\u4e14WWW\u670d\u52a1\u5668\u542f\u52a8\u4e4b\u540e\uff0c\u6bcf\u5f53\u6709\u5bf9ASP\u6587\u4ef6\u7684HTTP\u8bf7\u6c42\u65f6\uff0c\u670d\u52a1\u5668\u90fd\u4f1a\u53bb\u8bfb\u53d6\u57fa\u70b9\u76ee\u5f55\u4e0b\u7684Global.asa\u6587\u4ef6\u3002\u6240\u4ee5\u53ef\u4ee5\u5728 Global.asa \u6587\u4ef6\u4e2d\u5305\u542b\u5982\u4e0b\u4ee3\u7801\uff1a <\/p>\n<blockquote>\n<p> <SCRIPT LANGUAGE=\"VBScript\" RUNAT=\"Server\"> <br \/>  Sub Application_OnStart <\/p>\n<p>  &#8216; \u5f53\u670d\u52a1\u5668\u5f00\u542f\u65f6\uff0c\u8bbe\u7f6e\u7528\u6237\u8ba1\u6570\u5668\u4e3a0 <br \/>  Application(&#8220;ActiveUsers&#8221;) = 0 <br \/>  End Sub <br \/>  Sub Session_OnStart <\/p>\n<p>  &#8216; \u8bbe\u7f6eSession\u5bf9\u8c61\u7684\u6709\u6548\u65f6\u95f4\u4e3a20\u5206\u949f\uff08\u4e5f\u53ef\u4ee5\u66f4\u957f\uff0c\u4f46\u662f\u8d8a\u957f\u5bf9\u670d\u52a1\u5668\u7684\u8d44\u6e90\u5360\u7528\u8d8a\u591a\uff09 <br \/>  Session.Timeout = 20 <\/p>\n<p>  &#8216; \u5f53\u5f00\u59cb\u4e00\u4e2aSession\u65f6\u7528\u6237\u8ba1\u6570\u5668\u52a01 <br \/>  Application.Lock <br \/>  Application(&#8220;ActiveUsers&#8221;) = Application(&#8220;ActiveUsers&#8221;) + 1 <br \/>  Application.UnLock <br \/>  End Sub <br \/>  Sub Session_OnEnd <\/p>\n<p>  &#8216; \u5f53\u7ed3\u675f\u4e00\u4e2aSession\u65f6\u7528\u6237\u8ba1\u6570\u5668\u51cf1 <br \/>  Application.Lock <br \/>  Application(&#8220;ActiveUsers&#8221;) = Application(&#8220;ActiveUsers&#8221;) &#8211; 1 <br \/>  Application.UnLock <br \/>  End Sub <\/p>\n<p>  <\/SCRIPT><\/p>\n<\/blockquote>\n<p>\u4e0a\u9762\u7684\u4ee3\u7801\u53e6\u5b58\u4e3a global.asa \u540e\uff0c\u653e\u5728\u6839\u76ee\u5f55\u4e0b\uff0c\u5728\u4f60\u8981\u663e\u793a\u5728\u7ebf\u4eba\u6570\u7684\u5730\u65b9\u52a0\u4e0a\u5982\u4e0b\u4ee3\u7801\u5373\u53ef\u663e\u793a\u5728\u7ebf\u4eba\u6570\uff1a<\/p>\n<blockquote>\n<p>\u5f53\u524d\u5728\u7ebf<%=application(\"online\")%>\u4eba<\/p>\n<\/blockquote>\n<p>\u8fd9\u79cd\u65b9\u6cd5\u7684\u7f3a\u70b9\u4e5f\u662f\u663e\u800c\u6613\u89c1\u7684\uff1a<br \/>\u7b2c\u4e00\u3001session \u6bd4\u8f83\u6d88\u8017\u7cfb\u7edf\u8d44\u6e90\uff1b<br \/>\u7b2c\u4e8c\u3001\u5f53\u5728\u7ebf\u4eba\u6570\u8f83\u591a\u65f6\u4f1a\u9891\u7e41\u7684 Lock \u548c UnLock Application \u53d8\u91cf\uff0c\u5bfc\u81f4\u670d\u52a1\u5668\u6548\u7387\u964d\u4f4e\uff1b<br \/>\u7b2c\u4e09\u3001\u5982\u679c\u4f60\u7684\u7f51\u7ad9\u5728\u670d\u52a1\u5668\u4e2d\u7684\u76ee\u5f55\u6df1\u5ea6\u4f1a\u56e0\u4e3a\u901a\u8fc7\u4e0d\u540c\u7684\u57df\u540d\u8bbf\u95ee\u800c\u4e0d\u540c\u7684\u8bdd\uff0c\u8fd9\u53e5\u8bdd\u6709\u70b9\u7ed5\u53e3\uff0c\u4e3e\u4e2a\u4f8b\u5b50\uff1a<a href=\"http:\/\/fdream.net\/blog\" target=\"_blank\" title=\"\u6211\u7684BLOG\">\u6211\u7684BLOG<\/a> \u53ef\u4ee5\u901a\u8fc7\u4e24\u79cd\u65b9\u5f0f\u8bbf\u95ee\uff1ahttp:\/\/fdream.net\/blog\/ \u548c http:\/\/blog.afdream.com \uff0c\u90a3\u4e48<a href=\"http:\/\/blog.afdream.com\" target=\"_blank\" title=\"\u6211\u7684BLOG\">\u6211\u7684BLOG<\/a> \u7684\u76ee\u5f55\u6df1\u5ea6\u5728\u524d\u8005\u4e2d\u4e3a\u4e8c\uff0c\u5373\u7f51\u7ad9\u7684\u7b2c\u4e00\u5b50\u76ee\u5f55\uff0c\u800c\u5728\u7b2c\u4e8c\u79cd\u8bbf\u95ee\u65b9\u5f0f\u4e2d\u5219\u4e3a\u6839\u76ee\u5f55\u3002\u90a3\u4e48\u5f53\u4e0d\u540c\u7684\u8bbf\u95ee\u8005\u5206\u522b\u4ee5\u4e24\u79cd\u65b9\u5f0f\u8bbf\u95ee\u65f6\u5c06\u770b\u5230\u4e0d\u540c\u7684\u5728\u7ebf\u7ed3\u679c\uff0c\u56e0\u4e3a\u4e24\u8005\u7684 Global.asa \u4e0d\u4e00\u6837\uff0c\u800c\u4e14\u4e00\u4e2a\u7f51\u7ad9\u4e2d\u53ea\u6709\u4e00\u4e2a Global.asa \u6709\u6548\u3002\u7b80\u800c\u8a00\u4e4b\uff0c\u5c31\u662f\u8fd9\u4e2a\u7edf\u8ba1\u7ed3\u679c\u662f\u4e0d\u53ef\u9760\u7684\u3002<\/p>\n<p>\u7b2c\u4e8c\u79cd\u65b9\u6cd5\uff1a\u4e0d\u7528 Global.asa \uff0c\u8fd8\u662f\u7528 session\uff0c\u4f46\u662f\u6211\u4eec\u662f\u628a\u5b83\u4fdd\u5b58\u5230\u6570\u636e\u5e93\uff0c\u4e0d\u7528 Application \u53d8\u91cf\uff0c\u4e5f\u5c31\u65e0\u9700 Lock \u4e0e UnLock\u3002<br \/>\u9996\u5148\u5efa\u4e00\u4e2a\u6570\u636e\u5e93\uff1acount.mdb\uff0c\u5305\u542b\u4e00\u4e2a\u8868\uff1acount\uff0c\u8868\u4e2d\u5b57\u6bb5\u4e3a\uff1a<\/p>\n<blockquote>\n<p>ID  \u81ea\u52a8\u7f16\u53f7<br \/>sess  \u6587\u672c<br \/>posttime \u65e5\u671f\/\u65f6\u95f4<\/p>\n<\/blockquote>\n<p>\u5177\u4f53\u5b9e\u73b0\u4ee3\u7801\u5982\u4e0b\uff0c\u6587\u4ef6\u540d\u4e3a online.asp\uff1a<\/p>\n<blockquote>\n<p><%<br \/>sessionID = session.SessionID<br \/>timeout = 5<br \/>&#8216; \u8bbe\u7f6esession\u7684\u8fc7\u671f\u65f6\u95f4<\/p>\n<p>Conn_String = &#8220;DRIVER={Microsoft Access Driver (*.mdb)};DBQ=&#8221; &#038; Server.MapPath(&#8220;count.mdb&#8221;)<br \/>&#8216;\u5efa\u7acb\u6570\u636e\u5e93\u8fde\u63a5\u9879<br \/>Set ConnCount =Server.CreateObject(&#8220;ADODB.Connection&#8221;)<br \/>ConnCount.Open Conn_String<\/p>\n<p>&#8216; dateadd\u51fd\u6570\u7684\u8fd0\u7528,\u6307\u5b9an\u5206\u949f\u4e3a\u8ba1\u91cf\u5355\u4f4d,\u8ba1\u7b97now()+(-timeout)\u662f\u65f6\u95f4,\u4e5f\u5c31\u662f\u8fc7\u671f\u65f6\u95f4<br \/>aaa = dateadd(&#8220;n&#8221;, -timeout, now())<br \/>connCount.Execute (&#8220;del&#101;te * from count wh&#101;re postdate < #\" &#038; aaa &#038; \"#\")<\/p>\n<p>&#8216; \u4fdd\u5b58 sessionID\uff0c\u5982\u679c\u5df2\u7ecf\u5728\u6570\u636e\u5e93\u4e2d\u5c31\u4e0d\u52a0\u5165\u6570\u636e\u5e93<br \/>sql0 = &#8220;sel&#101;ct sess from count wh&#101;re sess='&#8221; &#038; sessionID &#038; &#8220;&#8216;&#8221;<br \/>set rscheck = connCount.Execute (sql0)<br \/>if rscheck.eof then<br \/>sql = &#8220;ins&#101;rt into count (sess,postdate) values(&#8216;&#8221; &#038; sessionID &#038; &#8220;&#8216;, &#8216;&#8221; &#038; now() &#038; &#8220;&#8216;)&#8221;<br \/>connCount.Execute (sql)<br \/>end if<br \/>rscheck.close<br \/>set rscheck = nothing<\/p>\n<p>&#8216;\u8ba1\u7b97\u6570\u636e\u5e93\u4e2d\u7684\u503c,count(sess)\u4ea7\u751f\u65b0\u7684\u503c,\u6700\u7ec8\u7528rs(0)\u8bfb\u51fa<br \/>sql2 = &#8220;sel&#101;ct count(sess) from count&#8221;<br \/>set rs = connCount.Execute (sql2)<br \/>count = rs(0)<br \/>rs.close<br \/>set rs = nothing<\/p>\n<p>&#8216;\u518d\u5bf9\u6570\u636e\u8fdb\u884c\u5168\u76d8\u68c0\u67e5\u770b\u770b\u662f\u5426\u6709\u8d85\u671f\u7684\u6570\u636e,\u6709\u5219\u6570\u636ecount\u51cf\u4e00<br \/>sql3 = &#8220;sel&#101;ct * from count&#8221;<br \/>set rspredel = connCount.Execute (sql3)<br \/>do until rspredel.eof<br \/>xxx=DateDiff(&#8220;n&#8221;, rspredel(&#8220;postdate&#8221;), Now())<br \/>if xxx > timeout then<br \/>count = count-1<br \/>end if<br \/>rspredel.movenext<br \/>loop<br \/>rspredel.close<br \/>set rspredel = nothing<\/p>\n<p>connCount.Close<br \/>set connCount = nothing<\/p>\n<p>if count = 0 then<br \/>count = 1<br \/>end if<br \/>%><br \/>document.write(&#8216;\u5f53\u524d\u4eba\u5728\u7ebf<%=count%>\u4eba&#8217;);<\/p>\n<\/blockquote>\n<p>\u8c03\u7528\u65b9\u5f0f\u5982\u4e0b\uff0c\u5728\u4f60\u8981\u663e\u793a\u7684\u5730\u65b9\u63d2\u5165\u5982\u4e0b\u4ee3\u7801\uff08\u6ce8\u610f\u8def\u5f84\u4e00\u5b9a\u8981\u5199\u5bf9\u54e6\uff01\uff09\uff1a<\/p>\n<blockquote>\n<p><script language=\u201cjavascript\u201d src=\u201conline.asp\u201d><\/script><\/p>\n<\/blockquote>\n<p>\u8fd9\u79cd\u65b9\u6cd5\u7684\u7f3a\u70b9\uff1a<br \/>\u5f53\u4f60\u7528\u4e0d\u540c\u7684\u57df\u540d\u8bbf\u95ee\u65f6\uff0c\u5c3d\u7ba1\u662f\u540c\u4e00\u4e2a\u7528\u6237\uff0c\u4ecd\u7136\u4f1a\u6709\u4e0d\u540c\u7684 sessionID\uff0c\u5f53\u4f60\u518d\u6362\u7528\u4e00\u4e2a\u6d4f\u89c8\u5668\u65f6\uff0c\u53c8\u4f1a\u6709\u4e00\u4e2a\u65b0\u7684 sessionID\u3002\u4e0d\u8fc7\u8fd9\u79cd\u60c5\u51b5\u4e5f\u592a\u7279\u6b8a\u4e86\u4e00\u70b9\uff0c\u5475\u5475\uff0c\u603b\u7684\u6765\u8bf4\u5462\uff0c\u5e94\u8be5\u7b97\u662f\u6bd4\u8f83\u7cbe\u786e\u7684\u4e86\uff0c\u81f3\u4e8e\u8bfb\u5199\u6570\u636e\u5e93\u561b\uff0c\u563f\u563f\u2026\u2026<\/p>\n","protected":false},"excerpt":{"rendered":"<p>ASP\u4e2d\u7edf\u8ba1\u5728\u7ebf\u4eba\u6570\u7684\u65b9\u6cd5\u82b1\u6837\u7e41\u591a\uff0c\u6211\u4e5f\u641e\u4e0d\u6e05\u695a\u6709\u51e0\u79cd ^_^\uff0c\u5076\u8fd9\u91cc\u4ecb\u7ecd\u4e09\u79cd\u5148\uff0c\u5982\u6709\u9519\u8bef\uff0c\u6b22\u8fce\u5404\u4f4d\u6279\u8bc4\u6307\u6b63\uff0c\u8fd8\u6709\u597d\u65b9\u6cd5\uff0c\u656c\u8bf7\u8865\u5145\uff01 \u9996\u5148\u4ecb\u7ecd\u4e00\u79cd\u6700\u7b80\u5355\u7684\u65b9\u6cd5\uff0c\u5229\u7528 Application\u3001 session \u548c Global.asa 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