Java tutorial
/* * Copyright 2012 Meruvian * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.meruvian.midas.core.util; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.util.Arrays; import java.util.List; import org.apache.http.Header; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.NameValuePair; import org.apache.http.client.HttpClient; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.methods.CloseableHttpResponse; import org.apache.http.client.methods.HttpGet; import org.apache.http.client.methods.HttpPost; import org.apache.http.client.methods.HttpUriRequest; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.impl.client.HttpClients; import org.apache.http.params.BasicHttpParams; import org.apache.http.params.HttpConnectionParams; import org.apache.http.params.HttpParams; import org.json.JSONException; import org.json.JSONObject; import android.content.Context; import android.net.ConnectivityManager; import android.util.Base64; import android.util.Log; /** * @author Dias Nurul Arifin * */ public class ConnectionUtil { public static final int TIMEOUT = 15000; public static boolean isInternetAvailable(Context context) { ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); if (cm.getActiveNetworkInfo() != null) return cm.getActiveNetworkInfo().isConnectedOrConnecting(); else return false; } public static HttpParams getHttpParams(int connectionTimeout, int socketTimeout) { HttpParams params = new BasicHttpParams(); HttpConnectionParams.setConnectionTimeout(params, connectionTimeout); HttpConnectionParams.setSoTimeout(params, socketTimeout); return params; } public static JSONObject get(String url) { JSONObject json = null; try { HttpClient httpClient = new DefaultHttpClient(getHttpParams(TIMEOUT, TIMEOUT)); HttpGet httpGet = new HttpGet(url); httpGet.setHeader("Content-Type", "application/json"); HttpResponse response = httpClient.execute(httpGet); json = new JSONObject(convertEntityToString(response.getEntity())); } catch (IOException e) { json = null; e.printStackTrace(); } catch (JSONException e) { json = null; e.printStackTrace(); } catch (Exception e) { json = null; e.printStackTrace(); } return json; } public static JSONObject postHttp(String url, String authorization) { JSONObject json = null; CloseableHttpClient httpclient = HttpClients.createDefault(); HttpPost httpPost = new HttpPost(url); String authBase64 = Base64.encodeToString(authorization.getBytes(), Base64.DEFAULT); httpPost.addHeader("Authorization", "Basic " + authBase64); httpPost.setHeader("Host", httpPost.getURI().getHost() + ":" + httpPost.getURI().getPort()); Log.d("ConnectionUtil", "HttpPost: " + httpPost.getURI().toString()); for (Header header : httpPost.getAllHeaders()) { Log.d("ConnectionUtil Headers: ", header.toString()); } try { CloseableHttpResponse response2 = httpclient.execute(httpPost); Log.d("ConnectionUtil", "Response Code: " + response2.getStatusLine().getStatusCode() + " " + response2.getStatusLine().getReasonPhrase()); Log.d("ConnectionUtil", "Response " + convertEntityToString(response2.getEntity())); json = new JSONObject(convertEntityToString(response2.getEntity())); } catch (IOException e) { e.printStackTrace(); Log.e("ConnectionUtil", e.getMessage(), e); } catch (JSONException e) { e.printStackTrace(); Log.e("ConnectionUtil", e.getMessage(), e); } return json; } public static JSONObject getWithAuthorizationHeader(String url, String authorization) { JSONObject json = null; try { HttpClient httpClient = new DefaultHttpClient(getHttpParams(TIMEOUT, TIMEOUT)); // HttpGet httpGet = new HttpGet(url); HttpPost httpPost = new HttpPost(url); String authBase64 = Base64.encodeToString(authorization.getBytes(), Base64.DEFAULT); httpPost.setHeader("Authorization", "Basic " + authBase64); Log.d("ConnectionUtil", "HttpGet: " + httpPost.getURI().toString()); for (Header header : httpPost.getAllHeaders()) { Log.d("ConnectionUtil Headers: ", header.toString()); } HttpResponse response = httpClient.execute(httpPost); Log.d("ConnectionUtil", "Response Code: " + response.getStatusLine().getStatusCode() + " " + response.getStatusLine().getReasonPhrase()); Log.d("ConnectionUtil", "Response " + convertEntityToString(response.getEntity())); json = new JSONObject(convertEntityToString(response.getEntity())); } catch (IOException e) { json = null; e.printStackTrace(); } catch (JSONException e) { json = null; e.printStackTrace(); } catch (Exception e) { json = null; e.printStackTrace(); } return json; } public static JSONObject post(String url, List<NameValuePair> nameValuePairs) { JSONObject json = null; try { HttpClient httpClient = new DefaultHttpClient(getHttpParams(TIMEOUT, TIMEOUT)); HttpPost httpPost = new HttpPost(url); httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); HttpResponse response = httpClient.execute(httpPost); json = new JSONObject(convertEntityToString(response.getEntity())); } catch (IOException e) { json = null; e.printStackTrace(); } catch (JSONException e) { json = null; e.printStackTrace(); } catch (Exception e) { json = null; e.printStackTrace(); } return json; } public static String convertEntityToString(HttpEntity entity) { InputStream instream; StringBuilder total = null; try { instream = entity.getContent(); BufferedReader reader = new BufferedReader(new InputStreamReader(instream)); total = new StringBuilder(); String line; while ((line = reader.readLine()) != null) { total.append(line); } } catch (IllegalStateException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return total.toString(); } }