OkHttp upload PDF and PNG with Form Data

Question

I have an app which will upload a PDF and PNG image file to the server, along with some other data. I'm using Stetho as inspector but everytime I try to open the log, it hangs and then crashes, so I have no idea if what I'm sending to the server is right.

Here are the required data (Method: POST, Content-Type: multipart/form-data):

Content-Disposition: form-data name="SrcFile" Content-Type: application/pdf (The PDF File to upload)
Content-Disposition: form-data; name="SignFile" Content-Type: image/png (The PNG File to upload)
Mode (String value)
Req (String value)
Token (String value)

This is my first to do this but based from my research, here is my code to upload said data:

final TrustManager[] trustAllCerts = new TrustManager[]{new X509TrustManager() {
   @Override
   public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
   }

   @Override
   public void checkServerTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
   }

   @Override
   public java.security.cert.X509Certificate[] getAcceptedIssuers() {
          return null;
   }
 }
};

// Install the all-trusting trust manager
final SSLContext sslContext = SSLContext.getInstance("TLS");
sslContext.init(null, trustAllCerts, new java.security.SecureRandom());
OkHttpClient client = new OkHttpClient();
client.setSslSocketFactory(sslContext.getSocketFactory());
client.setHostnameVerifier(new HostnameVerifier() {
       @Override
       public boolean verify(String hostname, SSLSession session) {
              return true;
       }
});
client.networkInterceptors().add(new StethoInterceptor());

File pngFile = new File(Environment.getExternalStorageDirectory() + "signature_" + pdfFile.getFileName() + ".png");
File pdf = new File(Environment.getExternalStorageDirectory() + pdfFile.getFileName());

String mode = "SampleMode"

Headers headers = new Headers.Builder()
        .add("Content-Type", "multipart/form-data")
        .build();

MultipartBuilder multipartBuilder = new MultipartBuilder()
       .type(MultipartBuilder.FORM)
       .addFormDataPart("Req", "SampleRequest")
       .addFormDataPart("Token", "MyAPIToken")
       .addFormDataPart("Mode", mode)
       .addFormDataPart("SrcFile", pdf.getAbsolutePath(), RequestBody.create(MediaType.parse("application/pdf"), pdf))
       .addFormDataPart("SignFile", pngFile.getAbsolutePath(), RequestBody.create(MediaType.parse("image/png"), pngFile));

RequestBody requestBody = multipartBuilder
             .build();

Request request = new Request.Builder()
             .url("MyURLHere")
             .headers(headers)
             .post(requestBody)
             .build();

Response response = client.newCall(request).execute();

I just would like to know if I'm doing the upload correctly, or maybe I set some parameters wrong. Again, I can't seem to use Stetho coz it hangs whenever I try to open it. Thanks!

Edited Turns out I just switched SrcFile and SignFile! XD The upload works, now on to downloading the response.

score 0 · Answer 1 · answered Mar 16 '16 at 06:40

I Rather suggest you to use this jar.

Use of this library

SyncHttpClient client = new SyncHttpClient();
RequestParams param = new RequestParams();

param.put("email", email);
param.put("title", title);

try {
    if (!path.equals("") || path != null) {
        param.put("logo", new File(path));
    } else {
        path = " ";
        param.put("logo", new File(path));
    }
} catch (FileNotFoundException e) {
    e.printStackTrace();
}

String link = "your link";

client.post(link, param, new TextHttpResponseHandler() {

    @Override
    public void onSuccess(int arg0, Header[] arg1, String arg2) {
        success1 = "true";
    }

    @Override
    public void onFailure(int arg0, Header[] arg1, String arg2,
            Throwable arg3) {
        success1 = "false";
    }
});

OkHttp upload PDF and PNG with Form Data

1 Answers1