如何使用发布方式而不是实现宁静的下载服务

Question

I am writing a service to return a xls file by using the json passed to my service. I am using JAX-RS and WINk. Since the json passed to my service is too complex to be a @QueryParam in the url, so I want to use @POST method instead of @GET.

The question is: If I use @GET, I know I can paste the url in the browser to download the file returned by service, but if I use @POST, how can I download the file returned by the service?

The goal is when user post the request to this service, a window will pop up asking either"OPEN", "Download" or "Cancel".

Answer 1

The most simple way is to use a HTML form :

<form action="rest/report/users" method="post">
ID: <input type="text" name="id"><br>
<input type="submit">
</form>

And

@Path("/report")
public class ReportResource {

    @Path("users")
    @POST
    @Produces(MediaTypeUtils.MS_EXCEL)
    public Response getUsers(@FormParam("id") String id ) {

        // Build the report and get the instance of java.io.File

        ResponseBuilder response = Response.ok(file);
        response.header("Content-Disposition","attachment; filename=report.xls");
        return response.build();
    }
}

The works like a charm showing the save dialog in Chrome and IE.