Java tutorial
package com.sked.gdg.service; import android.util.Log; import com.google.gson.Gson; import org.apache.http.HttpResponse; import org.apache.http.client.methods.HttpGet; import org.apache.http.client.methods.HttpPost; import org.apache.http.entity.StringEntity; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.params.BasicHttpParams; import org.apache.http.params.HttpConnectionParams; import org.apache.http.params.HttpParams; import org.apache.http.protocol.BasicHttpContext; import org.apache.http.protocol.HttpContext; import org.apache.http.util.EntityUtils; import org.json.JSONException; import org.json.JSONObject; import java.io.IOException; import java.io.InputStream; import java.io.UnsupportedEncodingException; import java.net.HttpURLConnection; import java.net.URL; import java.net.URLConnection; import java.net.URLEncoder; import java.util.Map; public class WebService { DefaultHttpClient httpClient; HttpContext localContext; private String ret; HttpResponse response = null; HttpPost httpPost = null; HttpGet httpGet = null; // The serviceName should be the name of the Service you are going to be // using. public WebService() { HttpParams myParams = new BasicHttpParams(); HttpConnectionParams.setConnectionTimeout(myParams, 10000); HttpConnectionParams.setSoTimeout(myParams, 10000); httpClient = new DefaultHttpClient(myParams); localContext = new BasicHttpContext(); } // Use this method to do a HttpPost\WebInvoke on a Web Service public String webInvoke(String webServiceUrl, String methodName, Map<String, Object> params) { Gson gson = new Gson(); return webInvoke(webServiceUrl, methodName, gson.toJson(params), "application/json"); } public String webInvoke(String webServiceUrl, String methodName, String params) { Gson gson = new Gson(); return webInvoke(webServiceUrl, methodName, gson.toJson(params), "application/json"); } private String webInvoke(String webServiceUrl, String methodName, String data, String contentType) { Log.d("data is", data); ret = null; httpPost = new HttpPost(webServiceUrl + methodName); response = null; httpPost.setHeader("apikey", "85314139-B77A-4D1A-9692-2409663D5E6E"); httpPost.setHeader("authtoken", "E2918D98-5525-4BF3-BD17-D13E88EEC586"); StringEntity tmp = null; if (contentType != null) { httpPost.setHeader("Content-Type", contentType); } else { httpPost.setHeader("Content-Type", "application/x-www-form-urlencoded"); } try { // data="{\"trainerBusinessInsuranceDetails\":{\"Trainer\":{\"Trainer_Id\":\"383\",\"FirstName\":\"Test \",\"LastName\":\"Testing\",\"DOB\":\"1994-11-05 13:15:30Z\",\"Gender\":\"0\",\"ContactNo\":\"2145551\",\"EmergencyContact\":\"46577\",\"EmergencyNumber\":\"34745454\",\"Facebooklink\":\"facebook.com\",\"Twitterlink\":\"twitter.com\"},\"Business\":{\"Trainer_Id\":\"383\",\"PT_LicenseNo\":\"1994-11-05 13:15:30Z\",\"PT_LicenseRenewal_Date\":\"1994-11-05 13:15:30Z\",\"CEC_Renewal_Date\":\"1994-11-05 13:15:30Z\",\"First_AidCertRenewal\":\"1994-11-05 13:15:30Z\",\"CPR_CertRenewal\":\"1994-11-05 13:15:30Z\",\"AED_CertRenewal\":\"1994-11-05 13:15:30Z\",\"Website\":\"www.google.com\",\"Experience\":\"1\",\"Company_Name\":\"cvdgf\",\"Company_Id\":\"1234\",\"Company_TaxId\":\"132123\"},\"Insurance\":{\"Trainer_Id\":\"383\",\"Membership_No\":\"123123\",\"Expiry_Date\":\"1994-11-05 13:15:30Z\",\"Insurance_Provider\":\"0\"}}}"; Log.d("overridden data is", data); tmp = new StringEntity(data, "UTF-8"); } catch (UnsupportedEncodingException e) { Log.e("FitnessApp", "HttpUtils : UnsupportedEncodingException : " + e); } httpPost.setEntity(tmp); try { response = httpClient.execute(httpPost, localContext); if (response != null) { ret = EntityUtils.toString(response.getEntity()); Log.d("Response Code:", response.getStatusLine().getStatusCode() + ""); } } catch (Exception e) { Log.e("FitnessApp", "HttpUtils: " + e); } return ret; } // Use this method to do a HttpGet/WebGet on the web service public String webGet(String webServiceUrl, String methodName, Map<String, String> params) { String getUrl = webServiceUrl + methodName; int i = 0; if (null != params) { for (Map.Entry<String, String> param : params.entrySet()) { if (i == 0) { getUrl += "?"; } else { getUrl += "&"; } try { getUrl += param.getKey() + "=" + URLEncoder.encode(param.getValue(), "UTF-8"); } catch (UnsupportedEncodingException e) { // TODO Auto-generated catch block e.printStackTrace(); } i++; } } Log.d("getUrl", getUrl); httpGet = new HttpGet(getUrl); httpGet.setHeader("apikey", "85314139-B77A-4D1A-9692-2409663D5E6E"); httpGet.setHeader("authtoken", "B198645B-DF03-4E23-874B-4651E8132E75"); //Log.e("WebGetURL: ", getUrl); try { response = httpClient.execute(httpGet); } catch (Exception e) { Log.e("GDG:", e.toString()); } // we assume that the response body contains the error message try { if (response != null) { if (response.getEntity() != null) ret = EntityUtils.toString(response.getEntity()); Log.d("Response Code:", response.getStatusLine().getStatusCode() + ""); } } catch (IOException e) { Log.e("GDG:", e.toString()); } return ret; } public static JSONObject Object(Object o) { try { return new JSONObject(new Gson().toJson(o)); } catch (JSONException e) { e.printStackTrace(); } return null; } public InputStream getHttpStream(String urlString) throws IOException { InputStream in = null; int response = -1; URL url = new URL(urlString); URLConnection conn = url.openConnection(); if (!(conn instanceof HttpURLConnection)) throw new IOException("Not an HTTP connection"); try { HttpURLConnection httpConn = (HttpURLConnection) conn; httpConn.setAllowUserInteraction(false); httpConn.setInstanceFollowRedirects(true); httpConn.setRequestMethod("GET"); httpConn.connect(); response = httpConn.getResponseCode(); if (response == HttpURLConnection.HTTP_OK) { in = httpConn.getInputStream(); } } catch (Exception e) { throw new IOException("Error connecting"); } // end try-catch return in; } public void clearCookies() { httpClient.getCookieStore().clear(); } public void abort() { try { if (httpClient != null) { System.out.println("Abort."); httpPost.abort(); } } catch (Exception e) { System.out.println("Your App Name Here" + e); } } }