not getting response response = httpclient.execute(request);

Question

public class HTTPPoster {
    public static HttpResponse doPost(String url, JSONObject c) throws ClientProtocolException, IOException 
    {

        HttpClient httpclient = new DefaultHttpClient();
        HttpPost request = new HttpPost(url);

        HttpEntity entity;
        StringEntity s = new StringEntity(c.toString());
        s.setContentEncoding((Header) new BasicHeader(HTTP.DEFAULT_CONTENT_CHARSET, "application/json"));
        entity = s;
        request.setEntity(entity);

        HttpResponse response;

        response = httpclient.execute(request);

        return response;
    }

}

This is the code but on response = http.client.execute(request) doesn't get response. I couldn't find why.

Solution 1

You should call the method asynchronously. Then it will work with the same code. Add these two lines of code to your project

StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
        StrictMode.setThreadPolicy(policy);

and make minimum sdk version to 9

Solution 2

You can check that if you are getting response from server or not by using following code :

HttpResponse response = httpClient1.execute(request);
                    Log.v("response code", response.getStatusLine()
                            .getStatusCode() + ""); 

If you get the value of response code as 200 then you are getting data from server and if the response code value >=300 then you have error at your server side.

Comments

[Peterdk]

The response is not a HtppResponse but a String. Or how do you get it to be a HttpResponse? Does this depend on the ResponseHandler?

[Shruti]

@Peterdk : please see the following question i asked after your comment.The answer i gave is correct .You kindly update your knowledge.See my question here : stackoverflow.com/questions/8365741/is-httpresponse-string/…

[Peterdk]

If you supply a responsehandler, the method returns T. So there is also a generic method of execute available, and in case of the BasicResponseHandler it returns a string.

[Yi Feng Xie]

many thanks to you! I found all http request example and all not work. After I add your code, all examples work fine! Why these examples not mention your code?

[kishore]

@YiFeng you can also use asyncTask feature of android to achieve the same result. Here is a quick link to asyncTask developer.android.com/reference/android/os/AsyncTask.html. You should call your http request inside the doBackgroundTask function. Doing blocking tasks in main thread is not preferred in android. Blocking tasks should be done in background thread

[user1418706]

Fantastic answer - very helpful