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Subject: Re: Getting application root path before servlet is initialized?
To: Tomcat Users List <users@tomcat.apache.org>
References: <CAJtcoLasrtjDqjmX7Fp3yj2srU_pQYW=SOEyoDs+g_F7hSEVQQ@mail.gmail.com>
From: Christopher Schultz <chris@christopherschultz.net>
Message-ID: <b670df3e-6a30-1f54-5b23-dcdb55bbf32d@christopherschultz.net>
Date: Fri, 24 Feb 2017 12:00:41 -0500
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Martin,

On 2/21/17 8:31 AM, Martin Knoblauch wrote:
> Hi,
> 
> is there a way to find the absolute path of the application root
> before the servlet is initialized?
> 
> Alternatively: is there a way to defer the initialization of a
> datasource until the servlet is initialized?
> 
> Background: I have extended
> "org.apache.tomcat.jdbc.pool.DataSourceFactory" to automatically
> set credentials so that they are not stored in the 
> "Catalina/localhost/XXX.xml" file. Instead they are taken from
> encrypted values in a file below the application root. Works fine
> if I know that path at "createDataSource" time.

Where are you configuring your <Resource>? In conf/server.xml or in
your application's META-INF/context.xml file?

> In order to avoid hard coding that path, I need a programmatic to
> find that value. Unfortunately the datasource is initialized before
> the servlet, so "getRealPath()" is not working yet.

getRealPath is a bad idea. Also, your DataSources will be
fully-configured before any servlets are initialized, so it's too late.

- -chris
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