如何在HttpServletRequest中访问POST参数？

Question

I've got an app that's basically a proxy to a service. The app itself is built on Jersey and served by Jetty. I have this Resource method:

@POST
@Path("/{default: .*}")
@Timed
@Consumes("application/x-www-form-urlencoded")
public MyView post(@Context UriInfo uriInfo, @Context HttpServletRequest request) {
  ...
}

A user submits a POST form. All POST requests go through this method. The UriInfo and HttpServletRequest are injected appropriately except for one detail: there seem to be no parameters. Here is my request being sent from the terminal:

POST /some/endpoint HTTP/1.1
Accept: */*
Accept-Encoding: gzip, deflate
Connection: keep-alive
Content-Length: 15
Content-Type: application/x-www-form-urlencoded; charset=utf-8
Host: localhost:8010
User-Agent: HTTPie/0.9.2

foo=bar&biz=baz

Here the POST body clearly contains 2 parameters: foo and biz. But when I try to get them in my code ( request.getParameterMap ) the result is a map of size 0.

How do I access these parameters or this parameter string from inside my resource method? If it matters, the implementation of HttpServletRequest that is used is org.eclipse.jetty.server.Request.

Answer 1

Three options

1. @FormParam("<param-name>") to gt individual params. Ex.

    @POST @Consumes("application/x-www-form-urlencoded") public Response post(@FormParam("foo") String foo @FormParam("bar") String bar) {} 

2. Use a MultivaluedMap to get all the params

    @POST @Consumes("application/x-www-form-urlencoded") public Response post(MultivaluedMap<String, String> formParams) { String foo = formParams.getFirst("foo"); } 

3. Use Form to get all the params.

    @POST @Consumes("application/x-www-form-urlencoded") public Response post(Form form) { MultivaluedMap<String, String> formParams = form.asMap(); String foo = formParams.getFirst("foo"); } 

4. Use a @BeanParam along with individual @FormParam s to get all the individual params inside a bean.

    public class FormBean { @FormParam("foo") private String foo; @FormParam("bar") private String bar; // getters and setters } @POST @Consumes("application/x-www-form-urlencoded") public Response post(@BeanParam FormBean form) { }