Status service

Introduction

This service handles error statuses. If an exception is thrown within your application or Restlet code, it will be intercepted by this service if it is enabled.

When an exception or an error is caught, the getStatus(Throwable, Request, Response) method is first invoked to obtain the status that you want to set on the response. If this method isn't overridden or returns null, the Status.SERVER_ERROR_INTERNAL constant will be set by default.

Also, when the status of a response returned is an error status (see Status.isError(), the getRepresentation(Status, Request, Response) method is then invoked to give your service a chance to override the default error page.

If you want to customize the default behavior, you need to create a subclass of StatusService that overrides some or all of the methods mentioned above. Then, just create a instance of your class and set it on your Component or Application via the setStatusService() methods.

Display error pages

Another common requirement is the ability to customize the status pages returned when something didn't go as expected during the call handling. Maybe a resource was not found or an acceptable representation isn't available? In this case, or when any unhandled exception is be intercepted, the Application or the Component will automatically provide a default status page for you. This service is associated to the org.restlet.util.StatusService class, which is accessible as an Application and Component property called "statusService".

In order to customize the default messages, you will simply need to create a subclass of StatusService and override the getRepresentation(Status, Request, Response) method. Then just set an instance of your custom service to the appropriate "statusService" property.