[CXF-5240] Jsonp interceptors do not work with GZIPOutInterceptor

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.5.9
• Fix Version/s: 2.6.10, 2.7.7, 3.0.0-milestone1
• Component/s: JAX-RS, Transports
• Estimated Complexity: Unknown
• Assignee: Sergey Beryozkin
• Reporter: Vadim Beilin
• Created: 28/Aug/13 17:20
• Updated: 27/Sep/13 18:18
• Resolved: 29/Aug/13 10:10

Description

Jsonp support via Jsonp(In,PreStream,PostStream)Interceptor (as described in http://cxf.apache.org/docs/jax-rs-data-bindings.html#JAX-RSDataBindings-JSONWithPadding%28JSONP%29) conflicts with GZIPOutInterceptor.

With a very simple test application request "http://localhost:7543/12?_jsonp=abc" without Gzip results in the following response

abc(24);

With Gzip:

abc();24

Apparent reason is that the method org.apache.cxf.jaxrs.provider.jsonp.AbstractJsonpOutInterceptor.writeValue(Message, String) writes directly to the response output stream. When the method is changed to write to message.getContent(OutputStream.class), responses with and without Gzip interceptor become the same "abc(24);", as expected.

------------------------

Service code:

package test.cxf.jsonp;
import javax.ws.rs.*;
@Path("/") @Produces("application/json")
public class Service {
    @GET @Path("{id}") public int find(@PathParam("id") int id) {
        return id * 2;
    }
}

Configuration (with Gzip)

<jaxrs:server id="jsonp" address="http://localhost:7543/">
    <jaxrs:serviceBeans>
      <ref bean="serviceBean" />
    </jaxrs:serviceBeans>       
    <jaxrs:inInterceptors>
       <bean class="org.apache.cxf.jaxrs.provider.jsonp.JsonpInInterceptor"/>
       <bean class="org.apache.cxf.transport.common.gzip.GZIPInInterceptor"/>
    </jaxrs:inInterceptors>
    <jaxrs:outInterceptors>
       <bean class="org.apache.cxf.jaxrs.provider.jsonp.JsonpPreStreamInterceptor"/>
       <bean class="org.apache.cxf.jaxrs.provider.jsonp.JsonpPostStreamInterceptor"/>
       <bean class="org.apache.cxf.transport.common.gzip.GZIPOutInterceptor"/>
    </jaxrs:outInterceptors> 
</jaxrs:server>
<bean id="serviceBean" class="test.cxf.jsonp.Service" />