How to enable GZIP compression for SOAP responses?

Question

I created a simple soap webservice using Spring and CXF . I'm now trying to enable GZIP compression for the xml requests. The following will accept compressed requests, but will response uncompressed. Why?

@Component
@WebService
public class SoapService {

}

@Autowired
private SpringBus bus;


EndpointImpl end = new EndpointImpl(bus, new SoapService());
end.getFeatures().add(config.gzipFeature());
ep.publish("/SoapService");

Request to this SoapService:

Encoding: UTF-8
Http-Method: POST
Content-Type: text/xml;charset=UTF-8
Headers: {accept-encoding=[gzip,deflate], content-encoding=[gzip], connection=[Keep-Alive], content-type=[text/xml;charset=UTF-8], ...}

Response (empty headers!!):

Content-Type: text/xml
Headers:
Payload: ...

Why is the response not compressed with gzip?

Answer 1

You need to add the @GZIP annotation to your interface. Here's the documentation . If I remember correctly you need to have GZIPOutInterceptor declared in your spring config.

Alternatively, you could add the GZIPOutInterceptor to your endpoint manually.