Java - Get server absolute path

Question

How to get the absolute path of server location in my machine?

Suppose I am using glassfish server then I need to get absolute path of glassfish docroot location as below:

C:\glassfish3\glassfish\domains\domain1\docroot

At run time, I need to create file on that location using java io package like:

C:\glassfish3\glassfish\domains\domain1\docroot\myfile.txt

Answer 1

If you use GlassFish to start GlassFish, i.e. use asadmin start-domain|start-instance then we offer the following iron-clad guarantee:

The current working directory of the JVM is absolutely, positively guaranteed to be the config directory of the domain or server. In the default case that would be:

c:/glassfish3/glassfish/domains/domain1/config

If you want to write something to (the default) docroot, you can do this:

File f = new File("../docroot/yourfile");

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Another option that is guaranteed to always work in every scenario even if you start the server with java directly (e.g. java -jar glassfish.jar) is to use the value of the System Property like so:

File f = new File(System.getProperty("com.sun.aas.instanceRoot") + "/docroot/yourfile");

Answer 2

I don't know if this is the best way, but it works for me :)

String path = new File("").getAbsolutePath() + File.separator + "docroot";

Answer 3

you can try following:

System.getProperty("catalina.base");

And you can find other properties by watching following variable in debug mode.

Properties properties = System.getProperties();

Answer 4

I had an similar problem and ended up with using

path = getClass().getProtectionDomain().getCodeSource().getLocation()

because I needed the path on a static function. This points somwhere to the WEB-INF/classes directory. With this you could point to something like path.subString(0,path.indexOf("WEB-INF")).

One problem that I had with this: When running a test from Eclipse, it pointed me to the "build" directory of the project.