从application.conf加载自定义conf文件时出错

Question

I'm using play-2.3. I want to load my custom config file through application.conf . But could not load it.

 conf /
          application.conf
          mycustom.prop

I'm including mycustom.prop in application.conf as follow.

   include file("CAB.prop") 
     or 
    include "mycustom.prop"
    or 
     include "mycustom"

None of above worked.

mycustum.prop:

myappIp=x.x.x.x
myappport=1234

In code when I'm trying to accessing myAppIp, it gives me NullPointerException

MyGlobal.java

import com.typesafe.config.ConfigFactory
...
    String ip = ConfigFactory.load().getString("myAppIp"); // this line throws NullPointerException

I'm not sure, either problem is in loading mycustom.prop or while geting its values.

Answer 1

Edit:

Turns out they only support a few file extensions: https://github.com/typesafehub/config#rationale-for-supported-file-formats . I tested various files, and only .properties , .conf and .json files are picked up by include . Any other file types are silently ignored.

---

(the following is not the problem, although the Play docs state this, the underlying library accepts the format mentioned in the question - kept here for legacy purposes)

From the docs :

An include statement consists of the unquoted string include and a single quoted string immediately following it.

So it should be

include "mycustom.prop"

Answer 2

You could try including the application.conf in the mycustom.prop and then start activator with with -Dconfig.resource or -Dconfig.file .

Your mycustom.prop :

include "application.conf"
# much configuration follows

And start with activator -Dconfig.resource=mycustom.prop if your config file is on the classpath (eg in the config folder) - or with activator -Dconfig.file=/opt/conf/mycustom.prop if you want to specify a path.