Hi everyone!
Can anyone please tell me ..,
1.If i can protect static pages(html pages) using the same login,logout process tht we use to protect jsp pages!
If yes then hw?
2.What is a session ?And can we use a session attribute set in one jsp page in other pages? If so hw?
Please guide me!! Am a beginner.
Hi there,
1) Could you please explain a bit more about what you mean by protecting JSP pages ?
Can you show some code examples of what you mean?
Static HTML pages can't have programming logic.
2) A session is an HTTP Object, that's why it's called HttpSession - in your JSP page if you specify session="true" , or leave it out (by default it's true) , then when you access your JSP page with your browser like Internet Explorer or Firefox , it creates an HttpSession .
By default all JSP pages have the session object (unless session="false" is specified in a particular JSP page)
You can write code like this
<%
session.setAttribute("someAttribute", "Some String Object");
%>
to set a value into the JSP page's session object.
then you can write code like this
<%
session.getAttribute("someAttribute");
%>
to retrieve the value stored in "someAttribute" , you can store any Object inside the HttpSession.
Also the HttpSession from one JSP page is visible in another JSP page.
- A session becomes invalid after some duration of browser inactivity. You can increase the inactive interval if you want.
- HttpSession will not work if the page gets cached by the browser, so if you are using sessions then prevent pages from being cached by the browser.
- You can remove an attribute from session with
<%
session.removeAttribute("attributeName");
%>
Many other methods are supported, see this API for details:
http://java.sun.com/javaee/5/docs/api/ , on the left hand side look for HttpSession and click on it.
> Hi everyone!
> Can anyone please tell me ..,
> 1.If i can protect static pages(html pages) using the
> same login,logout process tht we use to protect jsp
> pages!
> If yes then hw?
I think you mean something like jsecurity, LDAP, or some type of authentication?
> 2.What is a session ?
http://java.sun.com/j2ee/1.4/docs/api/javax/servlet/http/HttpSession.html
>And can we use a session
> attribute set in one jsp page in other pages? If so
> hw?
http://java.sun.com/j2ee/1.4/docs/tutorial/doc/
