public interface ContainerRequestFilter
By default, i.e. if no
name binding is applied to the filter implementation class,
the filter instance is applied globally, however only after the incoming request has been matched to a particular
resource by JAX-RS runtime. If there is a
@NameBinding annotation applied to the
filter, the filter will also be executed at the post-match request extension point, but only in case the
resource or sub-resource method is bound to the same name-binding annotation.
In case the filter should be applied at the pre-match extension point, i.e. before any request matching has
been performed by JAX-RS runtime, the filter MUST be annotated with a
Use a pre-match request filter to update the input to the JAX-RS matching algorithm, e.g., the HTTP method, Accept header, return cached responses etc. Otherwise, the use of a request filter invoked at the post-match request extension point (after a successful resource method matching) is recommended.
Filters implementing this interface must be annotated with
@Provider to be
discovered by the JAX-RS runtime. Container request filter instances may also be discovered and bound
dynamically to particular resource methods.
void filter(ContainerRequestContext requestContext) throws java.io.IOException
Filters in the filter chain are ordered according to their
jakarta.annotation.Priority class-level annotation
value. If a request filter produces a response by calling
ContainerRequestContext.abortWith(jakarta.ws.rs.core.Response) method, the
execution of the (either pre-match or post-match) request filter chain is stopped and the response is passed to the
corresponding response filter chain (either pre-match or post-match). For example, a pre-match caching filter may
produce a response in this way, which would effectively skip any post-match request filters as well as post-match
response filters. Note however that a responses produced in this manner would still be processed by the pre-match
response filter chain.
requestContext- request context.
java.io.IOException- if an I/O exception occurs.