Are you registering the servlet-mapping as well?
Sam
On Feb 2, 2009, at 5:36 PM, Farrukh Najmi wrote:
> Farrukh Najmi wrote:
>> Farrukh Najmi wrote:
>>>
>>> Hi Guys,
>>>
>>> I am in need of JSONP Callback support mentioned in this post:
>>>
>>> <http://n2.nabble.com/-Filter--how-to-customize-context-body---td2116754.html
>>> >
>>>
>>> Has there been any progress on that front? Is an issue logged yet?
>>> Is there a fix in svn yet?
>>>
>>> Please let me know. Thanks.
>>>
>>
>> Just found the issue here:
>>
>> <https://jersey.dev.java.net/issues/show_bug.cgi?id=180>
>>
>> I would really appreciate some idea from dev team when this could
>> be available in svn as it is a critical issue for me and likely
>> many other folks. If it will be a while then I would be grateful if
>> someone could expand a little on how to do the workaround suggest
>> by Paul in cited thread above where an Adpater is used in a
>> Response Filter. Thanks.
>>
>
> So I tried out the workaround suggested by Paul:
>
> I implemented a ResponseFilter as follows. Note
> JSONCallbackResponseFilter is "static final" class because it is
> nested inside another class 'xxx.SomeClass':
>
>
> public static final class JSONCallbackResponseFilter implements
> ContainerResponseFilter {
>
> public ContainerResponse filter(ContainerRequest request,
> ContainerResponse response) {
>
> MultivaluedMap<String, String> queryParamsMapMulti =
> request.getQueryParameters();
> Map queryParamsMap =
> convertMultiToSingleValueMap(queryParamsMapMulti);
> LOG.debug("JSONCallbackResponseFilter queryParamsMap=" +
> queryParamsMap);
> String callback = (String) queryParamsMap.get("callback");
> LOG.debug("callback=" + callback);
> if (callback != null) {
> response.setContainerResponseWriter(new
> JSONCallbackResponseAdapter(response.getContainerResponseWriter(),
> callback));
> }
> return response;
> }
>
> /**
> *
> * See: http://n2.nabble.com/-Filter--how-to-customize-context-body---td2116754.html
> */
> private static final class JSONCallbackResponseAdapter
> implements ContainerResponseWriter {
> private final ContainerResponseWriter crw;
>
> private OutputStream out;
> private String callback;
>
> JSONCallbackResponseAdapter(ContainerResponseWriter crw,
> String callback) {
> this.crw = crw;
> this.callback = callback;
> }
>
> public OutputStream writeStatusAndHeaders(long
> contentLength, ContainerResponse response) throws IOException {
> out = crw.writeStatusAndHeaders(-1, response);
>
> out.write((this.callback + "(").getBytes());
> return out;
> }
>
> public void finish() throws IOException {
> out.write(")".getBytes());
> }
> }
> }
>
> I have the following in my web.xml:
>
> <servlet>
> <servlet-name>Registry REST Interface</servlet-name>
> <servlet-
> class>com.sun.jersey.spi.spring.container.servlet.SpringServlet</
> servlet-class>
> <init-param>
> <param-
> name>com.sun.jersey.spi.container.ContainerResponseFilters</param-
> name>
> <param-value>xxx.SomeClass.JSONCallbackResponseFilter</param-
> value>
> </init-param>
> <load-on-startup>4</load-on-startup>
> </servlet>
>
> What I am finding is that the ResponseFilter is never being called.
>
> Why would that be?
>
> --
> Regards,
> Farrukh
>
> Web: http://www.wellfleetsoftware.com
>
>
>
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