jsp判断session中的值

时间:2023-03-09 13:08:15
jsp判断session中的值

方法有两种:

假设,此session的名字叫adminAccount

1、EL表达式

<script type="text/javascript">
if($.trim("${sessionScope.adminAccount}") == "")
{
top.location.href="admin.jsp";
}
</script>

2、java代码

  <%
if(session.getAttribute("adminAccount")==null || session.getAttribute("adminAccount")=="") {
String path = request.getContextPath();
String basePath = request.getScheme() + "://"+ request.getServerName() + ":" + request.getServerPort()+ path + "/";
response.sendRedirect(basePath+"admin.jsp");
}
%>