Deployment parameter for REST resource

When you are creating resource in a REST application, it will only be automatically created if you have an empty parameter. The problem is, sometime we need a resource that is configurable, so it can be reused by other applications.

We can solve this problem by defining init parameter in our web.xml like this:


Or if you’re using Guice (and jersey-guice), changing the end of your ServletModule like this:

     ImmutableMap.of("param", "test"));

The parameter can be read by your resource by defining ServletConfig as field and annotate that with @Context. Example:

public class TestResource {
   @Context ServletConfig config;

   @GET public String testMethod() {
      return config.getInitParameter("param");

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