user_login.jsp

网站的实例

<%
String user_login=(String)session.getAttribute("user_login");
if(user_login==null)
{
out.print("User has not login!<A href='index.jsp'>返回</A>"); 
}
else
{
if(!user_login.equals("yes"))
{
out.print("User has not login!<A href='index.jsp'>返回</A>");
}
}
%>