Jersey Resource Filters via Custom Annotations

Files for demonstrating custom binding of Jersey resource filters using annotations

IE6NotSupported.java

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface IE6NotSupported {}

IE6NotSupportedFilter.java

import java.io.IOException;

import javax.ws.rs.container.ContainerRequestContext;
import javax.ws.rs.container.ContainerRequestFilter;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;

public class IE6NotSupportedFilter implements ContainerRequestFilter {

  @Override
  public void filter(ContainerRequestContext requestContext) throws IOException {
    if (isIE6Browser(requestContext.getHeaderString("User-Agent"))) {
      requestContext.abortWith(Response.status(Status.PRECONDITION_FAILED).entity(getFailurePage()).build());
    }
  }

  private boolean isIE6Browser(String headerString) {
    ...
  }

  private Object getFailurePage() {
    ...
  }

}

MyApplication.java

import org.glassfish.jersey.server.ResourceConfig;

import com.google.common.collect.Sets;

public class MyApplication extends ResourceConfig {
  
  public MyApplication() {
    super(Sets.<Class<?>>newHashSet(
    
      // resources, other features and providers would also go here
      ResourceFilterBindingFeature.class
      
    ));
  }

}

ResourceFilterBindingFeature.java

import javax.ws.rs.container.DynamicFeature;
import javax.ws.rs.container.ResourceInfo;
import javax.ws.rs.core.FeatureContext;
import javax.ws.rs.ext.Provider;

@Provider
public class ResourceFilterBindingFeature implements DynamicFeature {

  @Override
  public void configure(ResourceInfo resourceInfo, FeatureContext context) {
    if (resourceInfo.getResourceMethod().isAnnotationPresent(IE6NotSupported.class)) {
      context.register(IE6NotSupportedFilter.class);
    }
    
  }
}