How do I read POST parameters for a RESTful service using Jersey?

Question

I am not using JSON or anything like that. I have a simple form to upload a file and I want to read the parameters of the form. The code below is not working as expected. It will not show any parameters.

@POST @Consumes(MediaType.APPLICATION_FORM_URLENCODED) @Path("{appNum}/{docId}/file") public Response uploadDocFile(         @PathParam("appNum") String appNum,         @PathParam("docId") String docId,         @Context HttpServletRequest req) {      try {          log.info("POST Parameters:");          Enumeration e = req.getParameterNames();          while(e.hasMoreElements())         {             Object key = e.nextElement();             log.info("Key: " + key);             log.info("Val: " + req.getParameter(key.toString()));         }       }  catch (Exception e) {         e.printStackTrace();         return Response.status(Status.INTERNAL_SERVER_ERROR).entity(new StatusResponse(e)).build();     }      return Response.ok().build(); } 

Answer 1

FYI, You need to use @FormParam. Also make sure INPUT HTML types are using name= not id=.

Answer 2

I have the same problem. Using @FormParam annotation for individual parameters works, but reading them from HttpServletRequest injected through @Context doesn't. I also tried to get the request object/parameters through Guice using Provider<HttpServletRequest> and @RequestParameters<Map<String, String[]>>. In both cases there were no post parameters.

However, it is possible to get a map of parameters by adding a MultivaluedMap<String, String> parameter to resource method. Example:

@POST public void doSomething(MultivaluedMap<String, String> formParams) { //... }