hi wildPengiun
can u plz explain more what u did to alter json output in rest service
I am, using jaxrs I also want to alter json output by adding callback
function
please can provide some sample code
suppose my rest service is
@GET
@Produces("application/json")
@Consumes("application/json")
@Path("/users/json")
public Flights getFlightListAsJson() {
return getFlights();
}
& i get ouput
{"flights":{"flight":[{"@flightId":"OK123","company":"Czech
Airlines","number":123,"aircraft":"B737"},{"@flightId":"OK124","company":"Czech
Airlines","number":124,"aircraft":"AB115"}]}}
but i wanted to do output like
getflight({"flights":{"flight":[{"@flightId":"OK123","company":"Czech
Airlines","number":123,"aircraft":"B737"},{"@flightId":"OK124","company":"Czech
Airlines","number":124,"aircraft":"AB115"}]}})
how can write this getflight string in response using jaxrs.
wildPengiun wrote:
>
> Thanks for that Sergey, but I've had a success with my REST
> outInterceptors. Instead of using an annotation on the service class I've
> added it to the beans.xml and now its burst into life. Now I can see the
> content-type is JSON hoorah.
>
> Next problem is how to change the message ?? any clues
>
> Thanks for all the help.
>
>
>
> Sergey Beryozkin-3 wrote:
>>
>> Hi
>>
>>>
>>> I'm trying to alter some output in a REST call. I want to wrap the JSON
>>> output with a callback name. I've managed to get a filter to work (all
>>> my
>>> attempts to get the OutInterceptor to work have failed). So now I've got
>>> a
>>> message object.
>>>
>>> To alter the message I thought I could use something like JSONStream os
>>> =
>>> message.getContent(JSONStream.class); but this returns null. Anyone have
>>> an
>>> idea how I can alter the JSON.
>>
>> JAXRS Output filters are invoked immediately after the invocation has
>> returned but before a given method response has been
>> serialized into the output message.
>>
>> So I think what you need to do in your response handler is to replace the
>> actual OutputStream.class with a buffered/filter one,
>> wrapping the original one.
>>
>> What will happen next is that a JSONProvider will write into this stream
>> and I guess at this moment you can transfrom the incoming
>> output bytes.
>>
>> It's basically doing same thing you can do with Servlet filters.
>>
>> Default JSONProvider does not append a JSONStream.class.
>>
>> As such another option is actually write a custom JSON
>> MessageVBodyWriter, possibly either extending the default one or simple
>> copying its code and updating its wtiteTo() method to do a pre-request
>> specific JSON or something like that.
>> Providers can have @Contexts like UriInfo, etc, injected so one can get
>> some additional info from there.
>>
>> Does it make sense or am I missing the point ?
>>
>> Cheers, Sergey
>>
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>>>
>>
>>
>>
>>
>
>
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