Java tutorial
//package com.java2s; import android.os.NetworkOnMainThreadException; import android.util.Log; import org.apache.http.HttpResponse; import org.apache.http.NameValuePair; import org.apache.http.StatusLine; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.HttpClient; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.methods.HttpPost; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.message.BasicNameValuePair; import org.apache.http.util.EntityUtils; import java.io.IOException; import java.net.HttpURLConnection; import java.nio.ByteBuffer; import java.util.ArrayList; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map; public class Main { private static final String CLASS_NAME = "RoskaUtil"; public static final String postData(String url, HashMap<String, String> params) { // Create a new HttpClient and Post Header HttpClient httpclient = new DefaultHttpClient(); HttpPost httppost = new HttpPost(url); String outputString = null; try { // Add your data List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(params.size()); Iterator it = params.entrySet().iterator(); while (it.hasNext()) { Map.Entry pair = (Map.Entry) it.next(); nameValuePairs.add(new BasicNameValuePair((String) pair.getKey(), (String) pair.getValue())); System.out.println(pair.getKey() + " = " + pair.getValue()); it.remove(); // avoids a ConcurrentModificationException } httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); // Execute HTTP Post Request HttpResponse response = httpclient.execute(httppost); StatusLine statusLine = response.getStatusLine(); if (statusLine.getStatusCode() == HttpURLConnection.HTTP_OK) { byte[] result = EntityUtils.toByteArray(response.getEntity()); outputString = new String(result, "UTF-8"); } } catch (ClientProtocolException e) { Log.i(CLASS_NAME, "Client protocolException happened: " + e.getMessage()); } catch (IOException e) { Log.i(CLASS_NAME, "Client IOException happened: " + e.getMessage()); } catch (NetworkOnMainThreadException e) { Log.i(CLASS_NAME, "Client NetworkOnMainThreadException happened: " + e.getMessage()); e.printStackTrace(); } catch (Exception e) { Log.i(CLASS_NAME, "Unknown exeception: " + e.getMessage()); } return outputString; } public static final byte[] toByteArray(int value) { return ByteBuffer.allocate(4).putInt(value).array(); } }