Apache Wicket 7 - Application properties

Question

Fairly new to Wicket so excuse my ignorance.

I have a Wicket app...starts with WicketApplication.class I have a WicketApplication.properties file to load some values. The properties file sits next to the class file (same package). Works fine, no issues.

Now, I would like to move the properties file outside the application WAR/JAR. Exported the app as a WAR to run on Tomcat. I have create aa folder called properties under tomcat root & moved WicketApplication.properties to this directory. Added the following to init() method in WicketApplication.class...

String realPath = getServletContext().getRealPath("/");
        realPath = realPath.replaceAll("\\\\", "/");
        if (realPath.toUpperCase().indexOf("WEBAPPS") != -1) {
            String newRes = realPath.substring(0,  realPath.toUpperCase().indexOf("WEBAPPS") -1);
            System.out.println (newRes + "/properties");
            getResourceSettings().getResourceFinders().add(new Path( newRes + "/properties"));
        }

I get an exception thrown.

How do I "externalise" the properties file?

Also, if I could take one step further, how do I map a properties file name to class name..it, myapplication.properties -> WicketApplication.class

Thanks in advance.

Answer 1

You need to add new IStringResourceLoader with application.getResourceSettings().getStringResourceLoaders().add(...) . See https://github.com/apache/wicket/blob/515e2be2a5301f5caf7b1baee4a593d21c20e275/wicket-core/src/main/java/org/apache/wicket/settings/ResourceSettings.java#L220-L224 for the default ones.

IResourceFinder should be used when you want to add custom location for your HTML files.

There is no way to map myapplication.properties to WicketApplication.class . By adding an additional IStringResourceLoader you just tell Wicket to search in yet another place.