<%
if(request.getParameter("txtUser").equals("admin")&& request.getParameter("txtPwd").equals("123"))
{
 Cookie c=new Cookie ("username",request.getParameter("txtUser"));
c.setMaxAge(60*60*24);//設置cookie的有效日期，單位為秒
response.addCookie(c);
session.setAttribute("username",request.getParameter("txtUser"));
response.sendRedirect("main.jsp");

}
else
{out.print("<center>用戶名/密碼錯誤！</center><br>");
out.print("<center>點擊<a href='login.jsp'>返回</a>重新登陸</center>");
}

%>