I am trying to send an Image from my android device over to an IIS server which is hosting a C#.NET based web handler.
The root problem I am facing now is how do I send it in to the server?
I have converted the image into base64 format but the part in which I have to send it in the HTTP's POST object is where I am facing a dilema.
HttpPost httppost = new HttpPost("http://192.168.1.248/imgup/Default.aspx");
File data2send = new File(image_str);
FileEntity fEntity = new FileEntity(data2send, "binary/octet-stream");
httppost.setEntity(fEntity);
//httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
In the above snippet^ The line where I send my base64 string image_str cannot be of File type which is obvious.
So, I need something to convert this base64 string in-order to send it over to the server or better if someone can help me out here thoroughly :D
I tried the namevalue pairs way..it din't worked.
The Image I am sending is of ~3KB.
My full activity code:
public class MainActivity extends Activity {
InputStream inputStream;
private class GetRouteInfo extends AsyncTask<Void, Void, Void> {
@Override
protected void onPreExecute() {
super.onPreExecute();
}
@Override
protected Void doInBackground(Void... params)
{
try
{
Bitmap bitmap = BitmapFactory.decodeResource(getResources(),R.drawable.img1);
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 90, stream); //compress to which format you want.
byte [] byte_arr = stream.toByteArray();
String image_str = Base64.encodeBytes(byte_arr);
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
System.out.println("image_str: "+image_str);
nameValuePairs.add(new BasicNameValuePair("image",image_str));
try{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://192.168.1.248/imgup/Default.aspx");
//post.addHeader("zipFileName", zipFileName);
//httppost.addHeader("image",image_str);
File data2send = new File();
//File data2send = new File(image_str);
FileEntity fEntity = new FileEntity(data2send, "binary/octet-stream");
httppost.setEntity(fEntity);
//httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
String the_string_response = convertResponseToString(response);
//Toast.makeText(MainActivity.this, "Response " + the_string_response, Toast.LENGTH_LONG).show();
System.out.println("Response " + the_string_response);
}catch(Exception e){
//Toast.makeText(MainActivity.this, "ERROR " + e.getMessage(), Toast.LENGTH_LONG).show();
System.out.println("ERROR " + e.getMessage());
System.out.println("Error in http connection "+e.toString());
}
}
catch (Exception e) {
Log.i("SvcMgr", "Service Execution Failed!", e);
}
finally {
Log.i("SvcMgr", "Service Execution Completed...");
}
return null;
}
@Override
protected void onCancelled() {
Log.i("SvcMgr", "Service Execution Cancelled");
}
@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
Log.i("SvcMgr", "Service Execution cycle completed");
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
/*Bitmap bitmap = BitmapFactory.decodeResource(getResources(),R.drawable.img1);
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 90, stream); //compress to which format you want.
byte [] byte_arr = stream.toByteArray();
String image_str = Base64.encodeBytes(byte_arr);
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("image",image_str));
try{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://192.168.1.248/imgup/Default.aspx");
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
String the_string_response = convertResponseToString(response);
Toast.makeText(MainActivity.this, "Response " + the_string_response, Toast.LENGTH_LONG).show();
}catch(Exception e){
Toast.makeText(MainActivity.this, "ERROR " + e.getMessage(), Toast.LENGTH_LONG).show();
System.out.println("Error in http connection "+e.toString());
}*/
try {
new GetRouteInfo().execute().get();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ExecutionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public String convertResponseToString(HttpResponse response) throws IllegalStateException, IOException{
String res = "";
StringBuffer buffer = new StringBuffer();
inputStream = response.getEntity().getContent();
int contentLength = (int) response.getEntity().getContentLength(); //getting content length…..
System.out.println("contentLength : " + contentLength);
//Toast.makeText(MainActivity.this, "contentLength : " + contentLength, Toast.LENGTH_LONG).show();
if (contentLength < 0){
}
else{
byte[] data = new byte[512];
int len = 0;
try
{
while (-1 != (len = inputStream.read(data)) )
{
buffer.append(new String(data, 0, len)); //converting to string and appending to stringbuffer…..
}
}
catch (IOException e)
{
e.printStackTrace();
}
try
{
inputStream.close(); // closing the stream…..
}
catch (IOException e)
{
e.printStackTrace();
}
res = buffer.toString(); // converting stringbuffer to string…..
System.out.println("Result : " + res);
//Toast.makeText(MainActivity.this, "Result : " + res, Toast.LENGTH_LONG).show();
//System.out.println("Response => " + EntityUtils.toString(response.getEntity()));
}
return res;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
//getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
Server Side code (in C#.net):
protected void Page_Load(object sender, EventArgs e)
{
if (System.IO.Directory.Exists(Server.MapPath("~/Data")))
{
}
else
{
System.IO.Directory.CreateDirectory(Server.MapPath("~/Data"));
}
if(Request.InputStream.Length !=0 && Request.InputStream.Length < 32768) {
//Request.ContentType = "binary/octet-stream";
Request.ContentType = "text/plain";
Stream myStream = Request.InputStream;
string fName = Request.Params["image"];
byte[] imageBytes = Convert.FromBase64String(myStream.ToString());
MemoryStream ms = new MemoryStream(imageBytes, 0, imageBytes.Length);
// Convert byte[] to Image
ms.Write(imageBytes, 0, imageBytes.Length);
System.Drawing.Image image = System.Drawing.Image.FromStream(ms, true);
string fileName = Server.MapPath("~/Data/").ToString() + "try1" + ".jpeg";
image.Save(fileName);
Request.InputStream.Close();
}
else
{
}
}
