jsp session lost after javascript window.replace.location with other jsp page

Question

我正在开发一个Web应用程序，需要在login.jsp页面之后重定向到home.jsp页面。我需要在主页中使用会话对象。但是每当我尝试从主页访问会话对象时，我都得到了空值重定向后如何从主页访问会话对象而又不丢失会话。我正在使用Java脚本windows.location.replace重定向Jsp页面。

Answer 1

I don't know exact reason but tomcat( or other framework ) doesn't get the session object properly at some point. It happens sometimes because of Request method, or some other xml configurations.

I believe you checked that the value of <%@page session@> is not false and none of your jsp invalidates session object or remove attributes of it.

I lost my error record, so I can't tell you why this is happenning but if you think windows.location.replace is the problem, then try to use response.sendRedirect( "url" ) in your jsp.