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📁 JspServlet教程专栏对javaservlet讲述的非常详细
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<title>新时代软件教程:操作系统 主页制作 服务器 设计软件 网络技术 编程语言 文字编辑</title>
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<p align="center"><script src="../../1.js"></script></a>
<p align="center"><big><strong>jsp中session的又一个例子</strong></big></p>
<div align="right">---摘自互联网</div>

<br>StartPage.jsp<br>
<br>
<br>
&lt;%@&nbsp; page&nbsp; session="true"&nbsp; %><br>
&lt;%<br>
//&nbsp; first&nbsp; we&nbsp; will&nbsp; put&nbsp; some&nbsp; test&nbsp; data&nbsp; into&nbsp; the&nbsp; bean&nbsp; to&nbsp; show<br>
//&nbsp; we&nbsp; can&nbsp; get&nbsp; it&nbsp; back&nbsp; out&nbsp; again&nbsp; in&nbsp; another&nbsp; page!<br>
String&nbsp; ls_validate&nbsp; =&nbsp; "This&nbsp; is&nbsp; our&nbsp; original&nbsp; session";<br>
session.setAttribute("Validate",&nbsp; ls_validate);<br>
<br>
//&nbsp; Now&nbsp; we&nbsp; will&nbsp; build&nbsp; a&nbsp; string&nbsp; containing&nbsp; the&nbsp; URL&nbsp; for&nbsp; the&nbsp; next&nbsp; page.<br>
//&nbsp; We&nbsp; are&nbsp; encoding&nbsp; session&nbsp; information&nbsp; into&nbsp; the&nbsp; URL&nbsp; string,&nbsp; so&nbsp; as&nbsp; you<br>
//&nbsp; move&nbsp; from&nbsp; page&nbsp; to&nbsp; page,&nbsp; your&nbsp; the&nbsp; Container&nbsp; will&nbsp; know&nbsp; what&nbsp; session<br>
//&nbsp; has&nbsp; been&nbsp; used.&nbsp; Without&nbsp; this&nbsp; information,&nbsp; the&nbsp; container&nbsp; will<br>
//&nbsp; start&nbsp; a&nbsp; new&nbsp; session&nbsp; for&nbsp; each&nbsp; page&nbsp; request.<br>
String&nbsp; ls_session_id&nbsp; =&nbsp; session.getId();<br>
String&nbsp; ls_encode_url&nbsp; =&nbsp; response.encodeURL("NewPage.jsp");<br>
String&nbsp; ls_normal_url&nbsp; =&nbsp; "NewPage.jsp";<br>
%>&nbsp; <br>
<br>
&lt;Html>&lt;Head>&lt;/Head>&lt;Body><br>
Sample&nbsp; URL&nbsp; with&nbsp; encoded&nbsp; information:&nbsp; &lt;%=&nbsp; ls_encode_url&nbsp; %>&nbsp; &lt;BR><br>
Our&nbsp; Session&nbsp; id&nbsp; is&nbsp; :&nbsp; &lt;%=&nbsp; ls_session_id&nbsp; %>&lt;BR>&lt;BR><br>
<br>
&lt;ahref='&lt;%=&nbsp; ls_encode_url&nbsp; %>'>&nbsp; Move&nbsp; to&nbsp; new&nbsp; page&nbsp; and&nbsp; keep&nbsp; session&nbsp; alive&lt;/a>&lt;BR>&lt;BR><br>
&lt;ahref=&nbsp; '&lt;%=&nbsp; ls_normal_url&nbsp; %>'>&nbsp; Move&nbsp; to&nbsp; new&nbsp; page&nbsp; without&nbsp; encoding&nbsp; the&nbsp; URL&lt;/a><br>
&lt;/Body>&lt;/Html><br>
<br>
<br>
NewPage.jsp<br>
&lt;Html>&lt;Head>&lt;/Head>&lt;Body><br>
&lt;%@&nbsp; page&nbsp; session="true"&nbsp; %><br>
The&nbsp; Current&nbsp; Session&nbsp; id&nbsp; is:&nbsp; &lt;%=&nbsp; session.getId()&nbsp; %>&nbsp; <br>
<br>
<br>
Checking&nbsp; the&nbsp; value&nbsp; stored&nbsp; in&nbsp; our&nbsp; validate&nbsp; attribute:<br>
&lt;%=session.getAttribute("Validate")%><br>
&lt;/Body>&lt;/Html>

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