CODEWITHSUNDEEP
javaandroidhttpmultipartform-data
Roshnal
Roshnal

Reputation: 1314

Sending Multipart Form Data in Android

I have used the below code (taken from SO) to post some data to a PHP script:

HttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(Web.API_PREFIX_GENERAL + "ajax/process.AL.php");

MultipartEntity reqEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
reqEntity.addPart("mail", new StringBody("[email protected]"));
reqEntity.addPart("remote", new StringBody("1"));
reqEntity.addPart("altitle", new StringBody("GHI"));
reqEntity.addPart("aldesc", new StringBody("JKL"));
reqEntity.addPart("t", new StringBody("N"));
reqEntity.addPart("lat", new StringBody(lati));
reqEntity.addPart("long", new StringBody(longi));
reqEntity.addPart("p", new StringBody("all"));

httpPost.setEntity(reqEntity);
httpClient.execute(httpPost);

...And this does not produce anything. No error, but nothing gets posted either.

However, if I use something like below and have no parts added to reqEntity,

String url = Web.API_PREFIX_GENERAL + "ajax/[email protected]&remote=1&altitle=GHI" +
                    "&aldesc=JKL&t=N&lat=" + lati + "&long=" + longi + "&p=all";

HttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);

MultipartEntity reqEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);

httpPost.setEntity(reqEntity);
httpClient.execute(httpPost);

...this works

I have all the required Apache libraries set up also. So any idea why this is?

I need to use MultipartEntity because I'll also have to post an image later.

Thanks.

Upvotes: 3

Views: 2005

Answers (3)

FrancescoAzzola
FrancescoAzzola

Reputation: 2654

I think the problem isn't in the client side but in the server side. In the second example you are sending an HTTP POST but you are sending parameters like a GET.

Usually a Multipart request is used when you send data file (i.e. upload a file), but it seems to me in your code you aren't sending any data file, so you shouldn't use a multipart request.

Upvotes: 1

dragostis
dragostis

Reputation: 2662

You may have a problem with the integer to string conversion. Try this:

reqEntity.addPart("lat", new StringBody(Integer.toString(lati)));
reqEntity.addPart("long", new StringBody(Integer.toString(longi)));

You can use lati + "" instead of Integer.toString(lati).

Upvotes: 0

hotpro
hotpro

Reputation: 336

I tested your code and monitor the http request using a http proxy tool. It works. Maybe some error occur in your php code.

class MyTask extends AsyncTask<Void, Void, Void> {

    @Override
    protected Void doInBackground(Void... params) {
        testUpload();
        return null;
    }

}

public void testUpload() {  
    HttpClient httpClient = new DefaultHttpClient();
    HttpPost httpPost = new HttpPost("http://www.google.com/" + "ajax/process.AL.php");

    try {
        MultipartEntity reqEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
        reqEntity.addPart("mail", new StringBody("[email protected]"));
        reqEntity.addPart("remote", new StringBody("1"));
        reqEntity.addPart("altitle", new StringBody("GHI"));
        reqEntity.addPart("aldesc", new StringBody("JKL"));
        reqEntity.addPart("t", new StringBody("N"));
        reqEntity.addPart("p", new StringBody("all"));

        httpPost.setEntity(reqEntity);
        httpClient.execute(httpPost);
    } catch (UnsupportedEncodingException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (ClientProtocolException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

Upvotes: 0

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