[Java] Custom HTTP Client (Apache) with cookies

CustomHttpClient

package es.ineco.sima.helper.network;

/**
 * Created by alexandru.simonescu on 29/09/2014.
 */
import android.content.Context;
import android.util.Log;


import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URI;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import org.apache.http.Header;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.CookieStore;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.params.ConnManagerParams;
import org.apache.http.cookie.Cookie;
import org.apache.http.impl.client.BasicCookieStore;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.CoreProtocolPNames;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;

public class CustomHttpClient {

    public static int httpRequestStatusCode = 000;
    private static final String TAG = CustomHttpClient.class.getSimpleName();

    /** The time it takes for our client to timeout */
    public static final int HTTP_TIMEOUT = 30 * 1000; // milliseconds

    /** Single instance of our HttpClient */
    private static DefaultHttpClient mHttpClient;

    /**
     * Get our single instance of our HttpClient object.
     *
     * @return an HttpClient object with connection parameters set
     */
    private static DefaultHttpClient getHttpClient() {
        if (mHttpClient == null) {
            mHttpClient = new DefaultHttpClient();
            final HttpParams params = mHttpClient.getParams();
            HttpConnectionParams.setConnectionTimeout(params, HTTP_TIMEOUT);
            HttpConnectionParams.setSoTimeout(params, HTTP_TIMEOUT);
            ConnManagerParams.setTimeout(params, HTTP_TIMEOUT);
        }
        return mHttpClient;
    }

    /**
     * Performs an HTTP Post request to the specified url with the
     * specified parameters.
     *
     * @param url The web address to post the request to
     * @param postParameters The parameters to send via the request
     * @return The result of the request
     * @throws Exception
     */
    public static String executeHttpPost(String url, ArrayList<NameValuePair> postParameters, Context ctx, boolean persistResponseCookies) throws Exception {
        BufferedReader in = null;
        try {
            DefaultHttpClient client = getHttpClient();
            HttpPost request = new HttpPost(url);
            UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(postParameters);
            Log.d(TAG, Arrays.toString(postParameters.toArray()));

            request.setEntity(formEntity);
            HttpResponse response = client.execute(request);

            httpRequestStatusCode = response.getStatusLine().getStatusCode();
            System.out.println("Response Status Code: "+httpRequestStatusCode);


            if (persistResponseCookies) {

                List<Cookie> cookies = client.getCookieStore().getCookies();

                // Persistir en SharedPreferences
                CookieHelper ckh = new CookieHelper(ctx);
                ckh.saveSharedPreferencesCookies(cookies);

                // Listar cookies -- TODO obtener desde SharedPreferences
                Header[] headers = response.getHeaders("Set-Cookie");
                for (Header h : headers) {

                    System.out.println("COOKIE: " + h.getValue().toString());
                }

            }



            in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));

            StringBuffer sb = new StringBuffer("");
            String line = "";
            String NL = System.getProperty("line.separator");
            while ((line = in.readLine()) != null) {
                sb.append(line + NL);
            }
            in.close();

            String result = sb.toString();
            return result;
        } finally {
            if (in != null) {
                try {
                    in.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

    /**
     * Performs an HTTP GET request to the specified url.
     *
     * @param url The web address to post the request to
     * @param useSessionCookies Uses cookies persisted in
     *                          SharedPreferences
     * @return The result of the request
     * @throws Exception
     */
    public static String executeHttpGet(String url, Context ctx, boolean useSessionCookies) throws Exception {
        BufferedReader in = null;
        try {
            DefaultHttpClient client = getHttpClient();
            HttpGet request = new HttpGet();
            request.setHeader(CoreProtocolPNames.HTTP_CONTENT_CHARSET, "UTF-8");
            request.setURI(new URI(url));

            // "Inyecta" cookie en el cliente
            if (useSessionCookies) {
                CookieHelper ch = new CookieHelper(ctx);
                List<Cookie> cookies = ch.loadSharedPreferencesCookie();

                if (cookies != null) {

                    CookieStore cookieStore = new BasicCookieStore();
                    for (int i=0; i<cookies.size(); i++)
                        cookieStore.addCookie(cookies.get(i));
                    client.setCookieStore(cookieStore);

                }

                /*
                HttpResponse response = client.execute(httpPost);
                cookies = client.getCookieStore().getCookies();
                saveSharedPreferencesCookies(cookies);
                */

            }


            HttpResponse response = client.execute(request);
            in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));

            StringBuffer sb = new StringBuffer("");
            String line = "";
            String NL = System.getProperty("line.separator");
            while ((line = in.readLine()) != null) {
                sb.append(line + NL);
            }
            in.close();

            String result = sb.toString();
            return result;
        } finally {
            if (in != null) {
                try {
                    in.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}