How to receive 2 binary files and JSON in Jersey jax-rs?

Question

I need to build a service that can receive 2 binary files (~100k each) and some metadata, preferably in json.

I found this, but it only seems to provide one InputStream to one of the parts. But I'd need two.. so what to do?

Just add another parameter with a different part name. What's the problem? Have you tried this? — Paul Samsotha, Dec 19 '15 at 06:55
Yes, that works. It's quite obvious now. If you want to add an answer I'll mark it as accepted. — Bobby, Jan 22 '16 at 21:09

score 1 · Answer 1 · edited May 23 '17 at 12:34

You have a few options

Simply add another parameter(s) with a different part annotation

@POST
@Consumes("multipart/form-data")
public Response post(@FormDataParam("file1") InputStream file1,
                     @FormDaraParam("file2") InputStream file2) {

}

The parts can have the same part name, so you could do

@POST
@Consumes("multipart/form-data")
public Response post(@FormDataParam("file") List<FormDataBodyPart> files) {
    for (FormDataBodyPart file: files) {
        FormDataContentDisposition fdcd = file.getFormDataContentDisposition();
        String fileName = fdcd = getFileName();
        InputStream is = file.getValueAs(InputStream.class);
    }
}

You could traverse the entire multipart body youself

@POST
@Consumes("multipart/form-data")
public Response post(FormDataMultiPart mulitPart) {
    Map<String, List<FormDataBodyPart>> fields = multiPart.getFields();
}

See Also:

Sending multiple files with Jersey: MessageBodyWriter not found for multipart/form-data, for a complete example
File upload along with other object in Jersey restful web service, for how the handle the JSON as a POJO.

How to receive 2 binary files and JSON in Jersey jax-rs?

1 Answers1