Using JSP Bean in a Servlet

问题

So I'm using a bean on a JSP page to store some data, like so:

<jsp:useBean id="data" class="myclass" scope="session" />

Is there anyway to access this bean from a servlet at a later time in the same session?

EDIT:

Apparently I'm not accessing the same session when I load the jsp page and the servlet. I'm printing out the session ID and it's giving me a different value for both pages, so I can't access the bean. Any ideas?

回答1:

Yes, you can obtain it as attribute from the session by the id as key.

Data data = (Data) request.getSession().getAttribute("data");

Note that you need to put classes in a package, else you cannot import it. You'd also like to give it a more sensible name than myclass.

来源：https://stackoverflow.com/questions/3418469/using-jsp-bean-in-a-servlet