Re: jsp and ejb

[Ben Engber]

>Just wondering if anyone had successfully made this happen -- I want
to have
>a persistent user object (ejb entity bean) which will be in my JSP
session
>everytime a cookie-authenticated/HTTP-authenticated user comes to my
site.
>
>Has anyone been able to do this with JSP and existing ejb servers out
there?
>I'd rather use this than have to make my own home grown
>object-serialisation/persistence thing.


We do the same thing over here, though I'm not really sure what you're
getting at.  The EJB container will handle the persistence, we just
store the reference in the session (the reference will be
serializable).

We use JSP "model 2" here, which means our servlet code looks
something like this:

HttpSession sess = req.getSession(true);
UserObject obj = context.findByUsername(name);
sess.putValue("user", obj);

And our JSP looks something like this:

<USEBEAN NAME="user"
TYPE="com.nytimes.UserObject"
LIFESPAN="session">
</USEBEAN>

Thus we access it as a regular JavaBean.

If you are using the "model 1" approach (only JSPs, no
servlets) you could probably just do all the session stuff inside some
<% ... %> tags.

There is no "native" EJB support in JSP 0.92.  You'll have
to do the coding above.  Sun has implied they'll have a more direct
way of accessing EJBs in future versions, but at the rate they're going
that should be well into the next millenium.

-Ben




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