Re: [Resteasy-users] Manually Unmarshalling Form Data

[Bill B. <bb...@re...>]

On 7/5/2012 6:50 PM, Cody Lerum wrote:
> I'm currently using the @Form functionality to handle the
> unmarshalling of form data sent via a cross-domain ajax post
>
>   @Path("/add")
>   @POST
>   @Produces("application/json")
>   @Consumes("application/x-www-form-urlencoded")
>   public Response add(@Form MyForm form) { ... }
>
> This works great except for when coming from Internet Explorer which
> has to be a XDomainRequest and that only supports sending with
> content-type text/plain.
>
> I can obviously create another method to handle this request which is
> receiving valid form data just with the wrong content-type
>
> @Path("/add")
> @POST
> @Produces("application/json")
> @Consumes("text/plain")
> public Response add(String data) { ... }
>
> However at this point I have to manually parse the data and set it
> field by field into my object.
>
> 1. Is there anyway to force the first method to process the the
> request data regardless of the received content-type?
>
> 2. If that isn't possible, is there a way I can manually call an
> internal RESTeasy function to map the String data from my second
> method to a specified class with @FormParam variables.
>


You can't really re-use public Response add(@Form MyForm form) method. 
There's a couple things you could do.  You could inject a Providers 
reference and change the media type:

@POST
@Consumes("text/plain")
public Response add(@Context Providers providers, InputStream content) {

    MessageBodyReader reader = 
providers.getMessageBodyReader(MultivaluedMap.class, null, null, new 
MediaType("application/x-www-form-urlencoded");

    MultivaluedMap<String, String> formParams = reader.readFrom(...);
...
}

You could also write a specific MessageBodyReader for your MyForm class 
for text/plain formats.

Bill

-- 
Bill Burke
JBoss, a division of Red Hat
http://bill.burkecentral.com