Jersey @FormDataParam to read multiple InputStream files

Question

I could able to use below code to upload a single photo, but I want to upload multiple photos with @FormDataParam

@POST
@Path("data/uploadPhoto")
@Produces(MediaType.APPLICATION_JSON)
@Consumes(MediaType.MULTIPART_FORM_DATA)
public Response uploadPhoto(@FormDataParam("data") InputStream photo) {

I tried to use @FormDataParam("file") List<InputStream> photos

but its not worked out, any suggestions?

Possible duplicate of [Selecting multiple files and uploading them using Jersey](https://stackoverflow.com/questions/25749472/selecting-multiple-files-and-uploading-them-using-jersey) — Dushyant Tankariya, Jun 05 '19 at 10:01

score 0 · Answer 1 · answered Jun 05 '19 at 07:20

Since each part of the request must have a unique name, you can not use the same name file for every image. The request must use different names.

It followes that your method must have one @FormDataParam for each file in the request. All of these must have different names.

public Response uploadPhoto(@FormDataParam("data1") InputStream photo1,
  @FormDataParam("data2") InputStream photo2,
  @FormDataParam("data3") InputStream photo3) {

thanks for the response, here photos are dynamic and I don't know how many of the photos will come in the request, so wanted to handle in a generic way. — Digital, Jun 08 '19 at 18:54

Dushyant Tankariya · Answer 2 · 2019-06-06T04:31:58.603

You can upload multiple Files by Using FormDataBodyPart Class which allows you to get the form data and you can grab the multiple images as InputStream from it.

I've posted a sample below,

 @POST
    @Consumes(MediaType.MULTIPART_FORM_DATA)
    public void uploadMultiple(@FormDataParam("file") FormDataBodyPart body){
        for(BodyPart part : body.getParent().getBodyParts()){
            InputStream is = part.getEntityAs(InputStream.class);
            ContentDisposition meta = part.getContentDisposition();
            doUpload(is, meta);
        }
    }

You Question possible duplicate of Selecting multiple files and uploading them using Jersey

Jersey @FormDataParam to read multiple InputStream files

2 Answers2