Reading/writing a text file in a servlet, where should this file be stored in JBoss?

Question

I have servlet deployed in JBoss. I want to read/write data into a text file based on the client input. Where should this text file be put in the JBoss directory structure?

Answer 1

There the /data directory is for.

---

Its absolute path is available by the jboss.server.data.dir system property.

File dataDir = new File(System.getProperty("jboss.server.data.dir"));
File yourFile = new File(dataDir, "filename.ext");
// ...

See also:

• JBoss Wiki - JBoss Properties

Note that you're this way tight-coupling the web application code to a specific server. If you ever want to change servers, keep in mind to change the above code as well to whatever the new server supports (or not).