Get ServletContext

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aerotops - 06 Sep 2007 21:51 GMT

Hi,

I would like to know if there is a convenience method for obtaining
the servlet context for an application. I have read through many posts
about how this can be done via the servlet config object. My problem
is as:

I have a Java class (a utility class) running in a webapp. I would
like to set a XSLT transformer object as an application level
attribute so I don't have to read it from the file system on every
request. Since the XSLT does not change, I think this would be a
better solution than using caching.

Currently, I have created a servlet which loads on startup and sets
the transformer object as a application level attribute, I would like
to not use an init servlet just for this purpose, rather, get the
ServletContext in a clean way and set the attribute to it.

Thanks.

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Lew - 06 Sep 2007 22:47 GMT

> Hi,
>
[quoted text clipped - 8 lines]
> request. Since the XSLT does not change, I think this would be a
> better solution than using caching.

<http://java.sun.com/javaee/5/docs/api/javax/servlet/Servlet.html#getServletConfig()>
or
<http://java.sun.com/javaee/5/docs/api/javax/servlet/GenericServlet.html#getServl
etConfig()>
<http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletConfig.html#getServle
tContext()>

Retrieve your transformer from the context in your servlet and pass it on down
to your utility method.

Signature

Lew

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Lew - 06 Sep 2007 23:04 GMT

> I would like to know if there is a convenience method for obtaining
> the servlet context for an application. I have read through many posts
[quoted text clipped - 11 lines]
> to not use an init servlet just for this purpose, rather, get the
> ServletContext in a clean way and set the attribute to it.

<http://java.sun.com/javaee/5/docs/api/javax/servlet/GenericServlet.html#getServl
etContext()>

or
<http://java.sun.com/javaee/5/docs/api/javax/servlet/GenericServlet.html#getServl
etConfig()>
with
<http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletConfig.html#getServle
tContext()>

Retrieve your transformer from the context in your servlet and pass it on down
to your utility method.

It doesn't have to be from the "init" servlet, albeit that's a great way to do
it. Why, may I ask, are you opposed to the idiom?

Otherwise, just do it from your controller servlet.

Signature

Lew

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Robert Klemme - 08 Sep 2007 21:55 GMT

http://java.sun.com/products/servlet/2.3/javadoc/javax/servlet/ServletContextLis
tener.html

robert

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