session 实现保存用户信息

index.jsp

 <body>

     <div style="margin: 0 auto; width: 500px; text-align: center;">

         <img alt="图片" src="logo.jpg" width="200px">

         <h1>绿叶网上书店系统</h1>

         <form method="post" action="doLogin.jsp">

             用户名：<input type="text" name="userName"><br>

             查　询：<input type="password" name="pwd"><br>

             <input type="submit" value="提交">

             <input type="reset" value="取消">

         </form>

     </div>

 </body>

doLogin.jsp

 <body>

     <%

         request.setCharacterEncoding("UTF-8");

         String name = request.getParameter("userName");

         String pwd = request.getParameter("pwd");

         if("admini".equals(name.trim()) && "admini".equals(pwd.trim())){

             session.setAttribute("name", name);

             session.setAttribute("pwd", pwd);

             response.sendRedirect("showLoginInfo.jsp");

         }

     %>

 </body>

show.jsp

 <body>

     <%

         String name = (String)session.getAttribute("name");

         String pwd = (String)session.getAttribute("pwd");

         out.print("欢迎 "+name+" 登录成功！！！！ 用户密码为："+pwd);

     %>

 </body>

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session 实现保存用户信息

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