Since all my other messages will be JSON I thought I would convert my android solution to send images, taken from the camera to a WCF service using JSON multipart messages. I think I have the sending working but do not know how to deserialize. The reason I do not base64 encode is that I want android 2.1 to work and base64 encoding does not work(at least that is what I have read, and the only "hack" I have found only work for small files).
So in android I try to send the image:
public void upload() throws Exception {
//Url of the server
String url = "http://192.168.0.10:8000/service/UploadImage";
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost(url);
MultipartEntity mpEntity = new MultipartEntity();
//Path of the file to be uploaded
String filepath = path;
File file = new File(filepath);
ContentBody cbFile = new FileBody(file, "image/jpeg");
//Add the data to the multipart entity
mpEntity.addPart("image", cbFile);
post.setEntity(mpEntity);
//Execute the post request
HttpResponse response1 = client.execute(post);
//Get the response from the server
HttpEntity resEntity = response1.getEntity();
String Response=EntityUtils.toString(resEntity);
Log.d("Response:", Response);
client.getConnectionManager().shutdown();
}
The wcf(as it was when I send using httpurlconnect and outputstream from android) code. It was working then :D:
public string UploadImage(Stream image)
{
var buf = new byte[1024];
var path = Path.Combine(@"c:\tempdirectory\", "test.jpg");
int len = 0;
using (var fs = File.Create(path))
{
while ((len = image.Read(buf, 0, buf.Length)) > 0)
{
fs.Write(buf, 0, len);
}
}
return "hej";
}
Interface for the wcf [OperationContract] [WebInvoke( Method = "POST", UriTemplate = "/UploadImage", ResponseFormat = WebMessageFormat.Json, RequestFormat = WebMessageFormat.Json)] string UploadImage(Stream image);
And if it matters, the consoleapplication that runs the wcf
static void Main(string[] args)
{
string baseAddress = "http://192.168.0.10:8000/Service";
ServiceHost host = new ServiceHost(typeof(ImageUploadService), new Uri(baseAddress));
WebHttpBinding binding = new WebHttpBinding();
binding.MaxReceivedMessageSize = 4194304;
host.AddServiceEndpoint(typeof(IImageUploadService),binding , "").Behaviors.Add(new WebHttpBehavior());
host.Open();
Console.WriteLine("Host opened");
Console.ReadKey(true);
}
So now to the question, how do I parse the incomming JSON stream? Is there a better way to do it?
Note: I tried setting up fiddler but after 3 hours not getting it to even read the traffic, I gave ut.
Is there a good way to actually debug this code?
Forgot to include the result if I convert the stream to byte array and save that to file:
--IZZI8NmDZ-Id7DWP5z0nuPPZspVAGglcfEY9
Content-Disposition: form-data; name="image"; filename="mypicture.jpg"
Content-Type: image/jpeg
Content-Transfer-Encoding: binary
ÿØÿá°Exif and other funny letters of cause :D ending with
--IZZI8NmDZ-Id7DWP5z0nuPPZspVAGglcfEY9--
With some new code I can manage to get this
--crdEqve1GThGGKugB3On0tGNy5h2u746
Content-Disposition: form-data; name="entity"
{"filename":"mypicture.jpg"}
--crdEqve1GThGGKugB3On0tGNy5h2u746
Content-Disposition: form-data; name="file"; filename="mypicture.jpg"
Content-Type: application/octet-stream
ÿØÿá´Exif and the whole image here ...
The new update routine looks like this:
public void uploadFile() {
String filepath = path;
File file = new File(filepath);
HttpClient httpClient = new DefaultHttpClient();
HttpPost postRequest = new HttpPost("http://192.168.0.10:8000/service/UploadImage");
ResponseHandler<String> responseHandler = new BasicResponseHandler();
// Indicate that this information comes in parts (text and file)
MultipartEntity reqEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
try {
//Create a JSON object to be used in the StringBody
JSONObject jsonObj = new JSONObject();
//Add some values
jsonObj.put("filename", file.getName());
//Add the JSON "part"
reqEntity.addPart("entity", new StringBody(jsonObj.toString()));
}
catch (JSONException e) {
Log.v("App", e.getMessage());
}
catch (UnsupportedEncodingException e) {
Log.v("App", e.getMessage());
}
FileBody fileBody = new FileBody(file);//, "application/octet-stream");
reqEntity.addPart("file", fileBody);
try {
postRequest.setEntity(reqEntity);
//Execute the request "POST"
HttpResponse httpResp = httpClient.execute(postRequest);
//Check the status code, in this case "created"
if(((HttpResponse) httpResp).getStatusLine().getStatusCode() == HttpStatus.SC_CREATED){
Log.v("App","Created");
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
Still I need a way to separate the the different part of the streams so I can divide the json message part(if I need those) and then get the bytearray for the image as a seperate part to store. I guess I could just skip json and go back to my original of JUST sending the bytearray of the image, but well I will need to be able to handle JSON messages anyways so.
Thanks for the comments so far.
