Re: servlet annotations for URL mapping?

From:

Lew <lew@lewscanon.com>

Newsgroups:

comp.lang.java.programmer

Date:

Tue, 29 Apr 2008 07:42:27 -0400

Message-ID:

<Z5OdnVeYtpw-lIrVnZ2dnUVZ_jWdnZ2d@comcast.com>

Rex Mottram wrote:

I've read that the newest Servlet API (2.5) has support for annotations.
But I'm having a lot of trouble finding out how to do a simple URL
mapping with annotations. Here's what I'm trying to do - take a standard
section of web.xml like:

    <servlet>
        <servlet-name>ping</servlet-name>
        <servlet-class>com.example.Ping</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>ping</servlet-name>
        <url-pattern>/test/ping</url-pattern>
    </servlet-mapping>

And replace it annotations in the servlet itself. The compelling idea
here is that new servlets can be self-contained, i.e. that new servlets
can be added to the system without having to make an out-of-band edit of
web.xml. And this in turn is valuable in the case of upgrades - if a
user is allowed/required to modify the deployment descriptor then
upgrading becomes much more difficult as our changes must be merged with
theirs. I want them to be able to add servlets without touching web.xml.

Given that containers like Tomcat are open source, it should be possible to
write annotations that do the trick, one would imagine.

BTW this is not a Java EE application. No Spring/Struts/Hibernate/etc.

Yes, it is a Java EE, by definition. If you are using servlets, it's Java EE.

Just a basic web container running a set of servlets.

Thus Java EE.

--
Lew