Jersey REST Client : Posting MultiPart data

Question

I am trying to write a Jersey client app which can post multi part form data to a Restful Jersey service. I need to post a CSV file with the data and a JSON with meta-data. I am using Jersey client 1.18.3. Here is my code (some names have been changed for company confidentiality )...

Client client = Client.create();
WebResource webResource = client.resource("http://localhost:8080/mariam/service/playWithDad");


    FileDataBodyPart filePart = new FileDataBodyPart("file", 
            new File("C:/Users/Admin/Desktop/input/games.csv"));

    String playWithDadMetaJson
    = "{\n"
    + "    \"sandboxIndicator\": true,\n"
    + "    \"skipBadLines\": false,\n"
    + "    \"fileSeparator\": \"COMMA\",\n"
    + "    \"blockSize\": false,\n"
    + "    \"gameUUID\": \"43a004c9-2130-4e75-8fd4-e5fccae31840\",\n"
    + "    \"useFriends\": \"false\"\n"
    + "}\n"
    + "";

    MultiPart multipartEntity = new FormDataMultiPart()
    .field("meta", playWithDadMetaJson, MediaType.APPLICATION_JSON_TYPE)
    .bodyPart(filePart);

    ClientResponse response = webResource.type(MediaType.MULTIPART_FORM_DATA_TYPE).post(multipartEntity);

Right now I am getting a compile error at the last line saying it cannot convert from void to ClientResponse.

I got some guidance on the RestFul service itself previously from this post..

Java Rest Jersey : Posting multiple types of data (File and JSON)

score 12 · Answer 1 · edited Jan 08 '20 at 17:38

12

Follow jersey documentation, they provide sample client code. Here is the snippet to post a multipart request:

final MultiPart multiPartEntity = new MultiPart()
        .bodyPart(new BodyPart().entity("hello"))
        .bodyPart(new BodyPart(new JaxbBean("xml"), MediaType.APPLICATION_XML_TYPE))
        .bodyPart(new BodyPart(new JaxbBean("json"), MediaType.APPLICATION_JSON_TYPE));

final WebTarget target = // Create WebTarget.
final Response response = target
        .request()
        .post(Entity.entity(multiPartEntity, multiPartEntity.getMediaType()));

edited Jan 08 '20 at 17:38

Denis Abakumov

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answered Feb 26 '15 at 23:31

Juned Ahsan

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1

Your code (and doc link) is Jersey 2. The OP is using Jersey 1 :-) – Paul Samsotha Feb 26 '15 at 23:33
1

@peeskillet Client code version does not really matter as long as POST multipart request is properly build by the client. – Juned Ahsan Feb 26 '15 at 23:33

score 6 · Accepted Answer · answered Feb 26 '15 at 23:42

6

"Right now I am getting a compile error at the last line saying it cannot convert from void to ClientResponse."

Look at the javadoc for WebResource. Look at the post(Object) (with Object arg). It returns void.

You need to be using the overloaded post(Class returnType, requestEntity), which return an instance of returnType type.

So you should be doing something like

ClientResponse response = webResource
        .type(MediaType.MULTIPART_FORM_DATA_TYPE)
        .post(ClientResponse.class, multipartEntity);

answered Feb 26 '15 at 23:42

Paul Samsotha

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Hi Peeskillet, On the server side, the service method for this client call is public PlayWithDataVO provideService(@FormDataParam("meta") String jsonMeta, @FormDataParam("data") InputStream file), but I am seeing the InputStream param is null although the json string is coming through. Any suggestions? – AbuMariam Mar 09 '15 at 19:08
Never mind, I figured it out. I was missing FormDataContentDisposition which should have the same name as FormDataParam – AbuMariam Mar 09 '15 at 23:03

Jersey REST Client : Posting MultiPart data

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