RESTful Java Web Services - Third Edition

Prematching server-side request message filters

You can designate ContainerRequestFilters as the prematching filter by annotating with the @javax.ws.rs.container.PreMatching annotation. The prematching filters are applied before the JAX-RS runtime identifies the matching Java class resource method. As this filter is executed before executing the resource matching process, you can use this type of filter to modify the HTTP request contents. Apparently, this can be used for influencing the request matching process, if required.

The following code snippet illustrates how you can use a prematching filter to modify the method type in the incoming HTTP request. This example modifies the method type from POST to PUT. As this is executed before identifying ...