How to post data to a Webservice using JSON?

Question

I have to send the following data to webservice at URl

The format of data to be send is:

new_member=[{"email":"[email protected]","username":"himanshu01","pwd":"himanshu01"}]

where email,username and pwd is the key and has corresponding value string fetched through edittext string. I am posting this data on click of button.

I am not getting any response bcoz i have tried to counter check this with my co developer in his iphone same app iphone version as the username and password is not valid is said by server.

My Signup.java class is:

    Button b1=(Button)findViewById(R.id.button1);
    b1.setOnClickListener(new OnClickListener()
    {
        EditText e=(EditText)findViewById(R.id.editText1);
        String a=e.getText().toString();
        EditText e1=(EditText)findViewById(R.id.editText1);
        String b=e1.getText().toString();
        EditText e2=(EditText)findViewById(R.id.editText1);
        String c=e2.getText().toString();
        public void onClick(View v) {
            // TODO Auto-generated method stub
             HttpClient client = new DefaultHttpClient(); 
                HttpConnectionParams.setConnectionTimeout(client.getParams(), 10000); //Timeout Limit 
                HttpResponse response; 
                JSONObject json = new JSONObject(); 
                try{ 
                    HttpPost post = new HttpPost("URL"); 
                    //System.out.println(post);
                    json.put("email", a);
                    json.put("username", b);
                    json.put("pwd",c); 
                    StringEntity se = new StringEntity( "JSON: " + json.toString());   
                    se.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, "application/json")); 
                    post.setEntity(se); 
                    response = client.execute(post); 
                    /*Checking response */ 
                    if(response!=null){ 
                        InputStream in = response.getEntity().getContent(); //Get the data in the entity 
 //System.out.println(response);
                }
                }
                catch(Exception e){ 
                    e.printStackTrace(); 
                    System.out.println(e.toString());
                    //createDialog("Error", "Cannot Estabilish Connection"); 
                } 
        }

    }
            );

Please assist me i am a newbie in JSON and parsing in Android.Thanx.

Answer 1

here is the example

HttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(
    "https://api.dailymile.com/entries.json?oauth_token="
    + token);

httpPost.setHeader("content-type", "application/json");
JSONObject data = new JSONObject();

data.put("message", dailyMilePost.getMessage());
JSONObject workoutData = new JSONObject();
data.put("workout", workoutData);
workoutData.put("activity_type", dailyMilePost.getActivityType());
workoutData.put("completed_at", dailyMilePost.getCompletedAt());
JSONObject distanceData = new JSONObject();
workoutData.put("distance", distanceData);
distanceData.put("value", dailyMilePost.getDistanceValue());
distanceData.put("units", dailyMilePost.getDistanceUnits());
workoutData.put("duration", dailyMilePost.getDurationInSeconds());
workoutData.put("title", dailyMilePost.getTitle());
workoutData.put("felt", dailyMilePost.getFelt());

StringEntity entity = new StringEntity(data.toString(), HTTP.UTF_8);
httpPost.setEntity(entity);

HttpResponse response = httpClient.execute(httpPost);

see the complete information from this blog http://simpleprogrammer.com/2011/06/04/oauth-and-rest-in-android-part-2/

Answer 2

List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(3);

nameValuePairs.add(new BasicNameValuePair("email", "[email protected]"));  
nameValuePairs.add(new BasicNameValuePair("username", "himanshu01")); 
nameValuePairs.add(new BasicNameValuePair("pwd", "himanshu01")); 

// You have to add your parameters as nameValuePairs

String res  = "";
                try
                {
                    HttpClient httpclient = new DefaultHttpClient();  
                    HttpPost httppost = new HttpPost("URL");  

                             // Add your data  

                             httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));  
                             HttpResponse response = httpclient.execute(httppost);  
                             res = EntityUtils.toString(response.getEntity());
                             JSONTokener t = new JSONTokener(res);
                             JSONArray a = new JSONArray(t);
                             JSONObject o = a.getJSONObject(0);
                             String sc = o.getString("success");
                             if(sc.equals("1"))
                             {
                                 // posted successfully
                             }
else
{
 // error occurred
}
                }
                catch (Exception e) 
                {

                    e.printStackTrace();
                }

Dont forgot to specify android.permission.INTERNET permission