This is referenced from the maven-buildnumber-plugin documentation.
http://apollo.ucalgary.ca/tlcprojectswiki/index.php/Public/Project_Versi
oning_-_Best_Practices#Build_Versioning
Where they do the following (assuming, of course, you've placed the info
in your manifest file):
String appServerHome = getServletContext().getRealPath("/");
File manifestFile = new File(appServerHome, "META-INF/MANIFEST.MF");
Manifest mf = new Manifest();
mf.read(new FileInputStream(manifestFile));
Attributes atts = mf.getMainAttributes();
System.out.println("Version: " +
atts.getValue("Implementation-Version"));
System.out.println("Build: " + atts.getValue("Implementation-Build"));
> -----Original Message-----
> From: Steve Cohen [mailto:[email protected]]
> Sent: Wednesday, January 11, 2012 10:29 AM
> To: [email protected]
> Subject: Re: Howto access project version programmatically within
> application
>
> On 01/11/2012 10:50 AM, Stephen Connolly wrote:
> >
getClass().getClassLoader().getPackage("").getImplementationVersion()
> >
>
> I really liked the simplicity of this idea. Alas,
> ClassLoader.getPackage(String) is a protected method, so this won't
> help.
>
> Accessible to me is:
>
> Package.getPackage("").getImplementationVersion(), which according to
> Javadocs sounds like it would do the same thing, but this throws a
> NullPointerException.
>
>
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