Pass byte[] as parameter to JSON service from Android Application

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Hi All,

I am trying to pass byte[] to JSON Service from the Android App but I am getting an error message "not allowed".
Service Method I am using :

C#

[OperationContract]
[WebGet(    RequestFormat=WebMessageFormat.Json,
            ResponseFormat=WebMessageFormat.Json,
            UriTemplate = "/uploadImage?data={data}&emailID={emailID}")]

bool uploadImage(byte[] data, string emailID);

The config file endpoints:

XML

<services>
     <service behaviorConfiguration="WebServiceBehaviour" name="WcfService.Service1">
       <endpoint address="" behaviorConfiguration="jsonBehavior" binding="webHttpBinding" bindingConfiguration="webHttpBindingWithJsonP" contract="WcfService.IService1"></endpoint>
       <endpoint address="soap" binding="basicHttpBinding" contract="WcfService.IService1"></endpoint>
     </service>
   </services>

Android app code :

Java

private String GetLocationInfo() {
     String loc="";
        try {
         
           bm = BitmapFactory.decodeResource(getResources(),R.drawable.testtmage);
              bos = new ByteArrayOutputStream(); 
              bm.compress(Bitmap.CompressFormat.JPEG, 40 , bos);
              
              bitmapdata=bos.toByteArray();
              
              String imgData=Base64.encodeToString(bitmapdata,Base64.DEFAULT);
           String img=imgData.replace("\n", "%20");
            // Send GET request to <service>/GetPlates
         
            
              
           String url=SERVICE_URI + "/uploadImage?data=bitmapdata&emailID=acp@own.com";
           HttpGet request = new HttpGet();
           request.setURI(new URI(url));
           
           request.setHeader("Accept", "application/json");
           request.setHeader("Content-type", "application/json");
     
            DefaultHttpClient httpClient = new DefaultHttpClient();
            HttpResponse response = httpClient.execute(request);
     
            HttpEntity responseEntity = response.getEntity();
            
            // Read response data into buffer
            char[] buffer = new char[(int)responseEntity.getContentLength()];
            InputStream stream = responseEntity.getContent();
            InputStreamReader reader = new InputStreamReader(stream);
            reader.read(buffer);
            stream.close();
     
            //JSONArray plates = new JSONArray(new String(buffer));
            
           
            
            for (int i = 0; i < buffer.length; i++) {
              loc+=buffer[i];
            }
            
           
             
        } catch (Exception e) {
            e.printStackTrace();
        }
        
        return loc;
    }

If there is any other solution to pass image bytes from android to JSON Wcf service please suggest.
I am not much familiar with java coding, your help is much appreciated.

Thanks in advance,

--Avinash

Posted 24-Sep-12 1:00am

Avinash6474

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Avinash6474 · Accepted Answer · 2012-10-03T17:11:00

Hi ,
Here is the service implementation:

C#

<pre lang="cs">[OperationContract]
       [WebInvoke(Method="POST", RequestFormat = WebMessageFormat.Xml,
           ResponseFormat = WebMessageFormat.Xml,
           UriTemplate = "/TestMethod")]
       bool TestMethod(CustomImage cust);

User defined data type:

C#

[DataContract]
    public class CustomImage
    {
        [DataMember]
        public string fileName { get; set; }
        [DataMember]
        public string[] ImageBytes { get; set; }
        [DataMember]
        public string EmailID { get; set; }
        public string DateOfBirth { get; set; }
        
    }

Convert string[]to Image in c#:

C#

try
{
    byte[] total_size = new byte[data.Length];
    List<byte> bytes = new System.Collections.Generic.List<byte>();
    foreach (string str in data)
    {
        //combine image bytes
        byte[] imageBytes = Convert.FromBase64String(str);
        bytes.AddRange(imageBytes);
    }

    Utils.FlowLog.getInstance().Log("Total size" + bytes.Count);

    byte[] bary = bytes.ToArray();

        byte[] imagebytes = bary;


    string fName1 =fileName;
    if (File.Exists(fName1) == true)
    {
        File.Delete(fName1);
    }

    using (FileStream sw = File.Open(fName1, FileMode.Create))
    {
        sw.Write(imagebytes, 0, imagebytes.Length);
        sw.Close();
    }
    return true;
}
catch (Exception ex)
{
    //exception logger

    return false;
}

Thanks,
Avinash

Ashraff Ali Wahab · Accepted Answer · 2012-09-24T04:51:00

Solution 1

You cant directly pass the bytes,convert the byte stream to BASE64 encoded string and pass it.

Posted 24-Sep-12 4:51am

Ashraff Ali Wahab

Comments

Avinash6474 24-Sep-12 21:57pm

Hi Ashraff Ali,
Thank you for your suggession.
I tried by converting the byte array to Base64 string and I passed the converted string as a parameter but it showing an error "URL length excised the max limit".
How to overcome on this issue.

--Avinash

Ashraff Ali Wahab 24-Sep-12 23:35pm

Why it is HTTPGet when you are sending some information to the server

Avinash6474 · Accepted Answer · 2012-09-26T16:11:00

Hi All,
This what I did to send values to JSON WCF SERVICE from android:

Wcf service method declaration:

C#

[OperationContract]
      [WebInvoke(Method="POST", RequestFormat = WebMessageFormat.Xml,
          ResponseFormat = WebMessageFormat.Xml,
          UriTemplate = "/TestMethod")]
      bool TestMethod(CustomImage cust);

This function is giving the array of bytes of image to be uploading -

Java

public JSONArray readBytes(InputStream inputStream) throws IOException, JSONException {

         int bufferSize = 1024;
         byte[] buffer = new byte[bufferSize];
         JSONArray array=new JSONArray();
         int len = 0,i=0;
         while ((len = inputStream.read(buffer)) != -1) {

           ByteArrayOutputStream byteBuffer = new ByteArrayOutputStream();
           byteBuffer.write(buffer, 0, len);
           byte[] b= byteBuffer.toByteArray();
           array.put(i,Base64.encodeToString(b, Base64.DEFAULT));
           i++;
         }
         return array;
       }

Following is the way to pass class object to JSON WCF Service :

Java

try
    	{
    	 
    	  InputStream is = new BufferedInputStream (getResources().openRawResource(R.drawable.gtan));
    	  
    	  JSONArray array=readBytes(is);
    	  is.close(); 	
    	     
          URI uri = new URI(SERVICE_URI+ "/TestMethod");
          JSONObject jo1 = new JSONObject();
          jo1.put("fileName", "avi.jpg");
          jo1.put("ImageBytes",array); // assign value to string[]
          jo1.put("EmailID", "avinash1234@gmail.com");
          jo1.put("SkinCareInterest", "Acne");
          jo1.put("LightSource", "Sunny");
          jo1.put("SkinType", "3");
          jo1.put("DateOfBirth", "1987-09-15");
          jo1.put("UserName", "BTBP");
          jo1.put("Password", "BTBP");
          
            
          HttpURLConnection conn = (HttpURLConnection) uri.toURL().openConnection();
          conn.setConnectTimeout(5*1000*3600); //set time out    
          conn.setReadTimeout(5*1000*3600);   // set socket time out
          conn.setRequestProperty("Content-Type","application/json; charset=utf-8");
          conn.setRequestProperty("Accept", "application/json");          
          conn.setRequestProperty("Connection", "Keep-Alive"); 
          conn.setRequestProperty("User-Agent", "Pigeon");        
          conn.setDoInput(true);
          conn.setDoOutput(true);
          conn.setRequestMethod("POST");
          conn.connect();
         
          OutputStream os =conn.getOutputStream();

          DataOutputStream out = new DataOutputStream(os);
          out.write(jo1.toString().getBytes());
          
          out.flush();
          os.close();

          int code = conn.getResponseCode();
          String message = conn.getResponseMessage();

        
          conn.disconnect();
    	}
    	catch(Exception ex)
    	{
    		ex.printStackTrace();    		
    	}

Thanks,
Avinash Patil

Pass byte[] as parameter to JSON service from Android Application

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