Is there a way to get Struts to reload the message resources files without restarting the server or the application?
The following solution was posted by Stefaan Huysentruyt in December of 2005:
Just subclass both PropertyMessageResources and PropertyMessageResourceFactory. Name them something like ReloadablePropertyMessageResources and ReloadablePropertyMessageResourcesFactory and configure them like this:
<message-resources
parameter="myresources.mymessages" factory="net.minimoa.struts.util.ReloadablePropertyMessageResourcesFactory"
/>
The sources:
ReloadablePropertyMessageResources.java
import org.apache.struts.util.PropertyMessageResources;
public class ReloadablePropertyMessageResources extends PropertyMessageResources {
public ReloadablePropertyMessageResources(ReloadablePropertyMessageResourcesFactory factory, String config) {
super(factory, config);
}
public ReloadablePropertyMessageResources(ReloadablePropertyMessageResourcesFactory factory, String config, boolean returnNull) {
super(factory, config, returnNull);
}
public synchronized void reload() {
locales.clear();
messages.clear();
formats.clear();
}
}
ReloadablePropertyMessageResourcesFactory.java
import org.apache.struts.util.MessageResources;
import org.apache.struts.util.PropertyMessageResourcesFactory;
public class ReloadablePropertyMessageResourcesFactory extends PropertyMessageResourcesFactory {
public MessageResources createResources(String config) {
return new ReloadablePropertyMessageResources(this, config, this.getReturnNull());
}
}
Just put some statement like this in an Action:
((ReloadablePropertyMessageResources)getResources(request)).reload();
and voilą...
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