Hey!
Yes, your correct. One doesn't want to hard code the DB URL
in the servlet, or for that matter in any major software that accesses a
DB.
The most important reason that I have encountered is what if
the DB moves. I guess, if you only write one or two classes for
the application, it doesn't matter. But what if you have 300 references
to the DB URL. Not a good software maintenance situation.
The way I solved this problem was I required everyone to use
a DB configuration object. I required all applications do something
like this.
ConfigObject config = new ConfigObject();
and use getters to access the attributes of the DB.
In that object I put all of the important DB stuff, including
the DB URL. I access it with getters.
getURL(); // the DB URL
getxxx();
getyyy();
Now if the DB moves, all of the 300 references
in 100 different applications are handled by
changing one line of code in one class.
Now I will agree that this is more important in
a corporate intranet environment as opposed
to an Internet website environment. But I think
it is a good policy to do this anyway.
I hope that this helps with you question. You
don't give a reason why hard coding the URL
is bad for your project.
BTW, it's my opinion that it is a bad policy to get
a DB connection in the init() of a servlet anyway. It's
okay when you are developing, but when you go
into production you'll rudely find out why it's bad Also,
check this list's archive for more info., for we had
a recent discussion concerning this very issue.
Sans adieu,
Danny Rubis
Robert wrote:
> Hello,
>
> How can I retrieve the parameters in a servlet
> that I send in a jsp:
>
> <jsp:forward page="someservlet">
> <jsp:param name="varname" value="sumvalue">
> </jsp:forward>
>
> To my knowledge I'm supposed to use the request
> object with the getParameter("varname") or
> getParameters(). But I can't seem to get it
> working.
> I want to retrive the parameter in the servlets
> init() method.
>
> Anyone having a solution, please?
>
> /Robert Karlsson
>
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