Question

I’m trying to upload an image file from an android device to my drupal website using services module

I can log-in succesfully:

HttpParams connectionParameters =  new BasicHttpParams(); 
int timeoutConnection = 3000;
HttpConnectionParams.setConnectionTimeout(connectionParameters, timeoutConnection);                 
int timeoutSocket = 5000;
HttpConnectionParams.setSoTimeout(connectionParameters, timeoutSocket);

httpClient   =   new DefaultHttpClient(connectionParameters);
HttpPost httpPost       =   new HttpPost(serverUrl+"user/login");
JSONObject json = new JSONObject();    

try{
     json.put("password", editText_Password.getText().toString());
     json.put("username", editText_UserName.getText().toString());                          
     StringEntity se = new StringEntity(json.toString());
     se.setContentType(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));

     httpPost.setEntity(se);                       

     //Execute HTTP post request
     HttpResponse response    =   httpClient.execute(httpPost);   
     int status_code = response.getStatusLine().getStatusCode();                            

     ... 
     ...

}
catch(Exception ex)
{

}

via response object I can get session name session id , user id and many other info.

after the login , I set no session info by myself through my HttpGet object , but use the same DefaultHttpClient, I can magically retrieve a node using the following code:

HttpGet httpPost2 = new HttpGet(serverUrl+"node/537.json");
HttpResponse response2 = httpClient.execute(httpPost2);

this made me think that, httpClient object stored the session info for me automatically.
because if I dont login first or use a new HttpClient object and try to retrieve the node, I get a 401 error.

However when I try to upload an image file as follows after logging in:

   httpPost = new HttpPost(serverUrl+"file/");
   json = new JSONObject();
   JSONObject fileObject = new JSONObject();    

   fileObject.put("file", photodata); //photodata is a byte[] that is set before this point
   fileObject.put("filename", "myfirstfile");
   fileObject.put("filepath", "sites/default/files/myfirstimage.jpg");
   json.put("file", fileObject);            

   se = new StringEntity(json.toString());
   se.setContentType(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));
   httpPost.setEntity(se);      

   //Execute HTTP post request
   response    =   httpClient.execute(httpPost);   
   status_code = response.getStatusLine().getStatusCode();  

I get 401 error although I’m logged in and using the same HttpClient object.

I also tried adding :

httpPost.setHeader("Cookie", SessionName+"="+sessionID);

which again gives me 401 error.

I’m also not sure whether I’m using the correct url, because I’m trying to use file.create method, but writing the url as “myip:myport/rest/file/create” gives wrong address.
My aim is to upload an image to a users node, so I guess after succesfully adding the file, I’ll use node.create right?

I hope someone will help me get through this.

Answer 1

I found when I first started doing this that most of my errors were due to not authenticating correctly.. I’m not sure your method is correct.. I know this works.

Using Drupal Services 3, I login as such and then store my session cookie into shared preferences. dataOut is a JSON object which holds the needed user login, and password information.

String uri = URL + ENDPOINT + "user/login";
HttpPost httppost = new HttpPost(uri);
httppost.setHeader("Content-type", "application/json");
StringEntity se;
try {
     se = new StringEntity(dataOut.toString());
     se.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE,
                    "application/json"));
     httppost.setEntity(se);
     HttpResponse response = mHttpClient.execute(httppost);
     mResponse = EntityUtils.toString(response.getEntity());
     // save the sessid and session_name
     JSONObject obj = new JSONObject(mResponse);
     SharedPreferences settings = PreferenceManager
    .getDefaultSharedPreferences(mCtx);
     SharedPreferences.Editor editor = settings.edit();
     editor.putString("cookie", obj.getString("session_name") + "="
                    + obj.getString("sessid"));
     editor.putLong("sessionid_timestamp", new Date().getTime() / 100);
     editor.commit();
} catch { //all of my catches here }

Once I have my session id stored.. I go about performing tasks on drupal like this.. The following code posts a node. I use the function getCookie() to grab the session cookie if it exists.. if not, then I log in, or if it’s expired, I log in. (note, you need to set the cookie expire time in your drupal settings.php file (I think that’s where it is if I remember correctly)

String uri = URL + ENDPOINT + "node";
HttpPost httppost = new HttpPost(uri);
httppost.setHeader("Content-type", "application/json");
String cookie = this.getCookie(mCtx);
httppost.setHeader("Cookie", cookie);
StringEntity se;
try {
    se = new StringEntity(dataOut.toString());
httppost.setEntity(se);
HttpResponse response = mHttpClient.execute(httppost);
    // response is here if you need it.
// mResponse = EntityUtils.toString(response.getEntity());
} catch { //catches }

The getCookie() function that keeps your cookie uptodate and working..

/**
 * Takes the current time, the sessid and determines if we are still part of
 * an active session on the drupal server.
 * 
 * @return boolean
 * @throws InternetNotAvailableException
 * @throws ServiceNotAvailableException
 */
protected String getCookie(Context ctx)
        throws InternetNotAvailableException {
    SharedPreferences settings = PreferenceManager
            .getDefaultSharedPreferences(mCtx);
    Long timestamp = settings.getLong("sessionid_timestamp", 0);
    Long currenttime = new Date().getTime() / 100;
    String cookie = settings.getString("cookie", null);
            //mSESSION_LIFETIME is the session lifetime set on my drupal server
    if (cookie == null || (currenttime - timestamp) >= mSESSION_LIFETIME) {

                    // the following are the classes I use to login.
                    // the important code is listed above.
                    // mUserAccount is the JSON object holding login, 
                    // password etc.
        JSONObject mUserAccount = UserAccount.getJSONUserAccount(ctx);
        call(mUserAccount, JSONServerClient.USER_LOGIN);

        return getCookie(ctx);
    } else {
        return cookie;
    }
}

This really should enable you to take advantage of all that Services has to offer. Make sure your endpoints are correct, and also make sure your permissions are set. I cursed for hours before I realized I had not granted perms to make nodes to users.

So once you are logged in.. To upload a file to Drupal Services I use the following code to first convert the image to byteArray.. and then to Base64.

tring filePath = Environment.getExternalStorageDirectory()+ "/test.jpg";
imageView.setImageDrawable(Drawable.createFromPath(filePath));
Bitmap bm = BitmapFactory.decodeFile(filePath);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.JPEG, 100, baos);
byte[] byteArrayImage = baos.toByteArray(); 
String encodedImage = Base64.encodeToString(byteArrayImage, Base64.DEFAULT);

Once you have the encodedImage. Construct a JSON Object with the keys, file (required), filename (optional, but recommended), filesize (optional) and uid (optional, the poster I presume) JSON would therefore look like this at its simplist required form {“file”:encodedImage}. Then, after making sure you have enabled the file resource on your server, POST the data to my-server/rest-endpoint/file. The response will include a fid in JSON. You can then assign this fid to the image field of a node you subsequently create using the node resource.