Invoke ContainerRequestContext.bufferEntity() before reading the entity.
Gili
On 24/09/2014 11:24 AM, Michael Pratt wrote:
> I'm using Jersey 2.12 and need to examine the request entity when it's
> form-url-encoded. In Jersey 1 I could simply call
> request.getFormdata() but that method is gone in Jersey 2. So I'm
> trying to write a filter that grabs the entity stream as a Form object
> and then replaces the entity stream with a new stream, but the stream
> is never re-marked as open and causes IllegalStateExceptions. Here is
> my filter, which is exactly based on the Jersey 1 impl:
>
> @Provider
> public class FormDataFilter implements ContainerRequestFilter
> {
> @Override
> public void filter(ContainerRequestContext requestContext)
> throws IOException
> {
> if (requestContext.hasEntity() &&
> MediaTypes.typeEqual(MediaType.APPLICATION_FORM_URLENCODED_TYPE,
> request.getMediaType()))
> {
> InputStream in = request.getEntityStream();
> if (in.getClass() != ByteArrayInputStream.class) {
> // Buffer input
> ByteArrayOutputStream baos = new ByteArrayOutputStream();
> try {
> ReaderWriter.writeTo(in, baos);
> } catch (IOException e) {
> throw new IllegalArgumentException(e);
> }
>
> in = new ByteArrayInputStream(baos.toByteArray());
> request.setEntityStream(in);
> }
>
> ByteArrayInputStream bais = (ByteArrayInputStream) in;
> Form f = request.readEntity(Form.class);
> bais.reset();
> }
> }
> }
>
> The problem is once request.readyEntity() is called, the entityContent
> is marked as closed, so the next filter or resource to try and consume
> the entity throws an IllegalStateException. I have tried re-arranging
> the order of readEntity() and setEntityStream() with no luck.
>
> What is the proper way to do this? I need to do this in a request
> filter because I need to set properties on the request context that
> are later used by one of my response filters.
>
> Thanks,
> Mike