CODEWITHSUNDEEP
javaandroidjerseyjersey-2.0
mmathan
mmathan

Reputation: 273

how to read multipart entity from android in jersey web service

i am getting multipart entity from android client as shown below.

       HttpClient httpClient = new DefaultHttpClient();

        HttpPost postRequest = new HttpPost(
        "http://localhost:9090/MBC_WS/rest/network/mobileUserPictureInsert1");


        MultipartEntity reqEntity = new MultipartEntity(
                HttpMultipartMode.BROWSER_COMPATIBLE);
        reqEntity.addPart("message", new StringBody("hi moni"));

        postRequest.setEntity(reqEntity);
        HttpResponse response = httpClient.execute(postRequest);

In jersey i am trying to retrieve message but getting only object.the code is:

 @Path("/mobileUserPictureInsert1")
 @POST
 @Consumes("multipart/*")

public String create(MultiPart multiPart){
     BodyPartEntity bpe = (BodyPartEntity) multiPart.getBodyParts().get(0).getEntity();
     String message = bpe.toString();

here i AM getting some object ony not message value. what mistake i made.pl help me.

Upvotes: 1

Views: 1260

Answers (1)

Paul Samsotha
Paul Samsotha

Reputation: 209112

Yes the the right result. toString() will just use Object.toString(), which will result in 

 getClass().getName() + '@' + Integer.toHexString(hashCode())

which is most likely what you're seeing. Unless BodyEntityPart overrides the toString(), which it doesn't. You should instead be getting the InputStream with BodyEntityPart.getInputStream(). Then you can do whatever with the InputStream.

A simple example:

@POST
@Consumes("multipart/*")
public String create(MultiPart multiPart) throws Exception {
    String message;
    try (BodyPartEntity bpe 
                = (BodyPartEntity) multiPart.getBodyParts().get(0).getEntity()) {
        message = getString(bpe.getInputStream());
    }
    return message;
}

private String getString(InputStream is) throws Exception {
    StringBuilder builder = new StringBuilder();
    try (BufferedReader reader = new BufferedReader(new InputStreamReader(is))) {
        String line;
        while((line = reader.readLine()) != null) {
            builder.append(line).append("\n");
        }
    }
    return builder.toString();
}

On another note: You are already using the Jersey multipart support, you can make life easier and just use its annotation support. For instance, you can just do

@POST
@Consumes("multipart/*")
public String create(@FormDataParam("message") String message){
    return message;
}

That is much easier. The @FormDataParam("message") gets the body name that you defined here:

reqEntity.addPart("message", new StringBody("hi moni"));

and converts to to String. As long as there's a MessageBodyReader available for the Content-Type of the body part, it should be able to be auto-converted.

Upvotes: 1

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