Read from a URL : Url « Network « Android

1. Android
2. Network
3. Url

Read from a URL

 
/* Copyright (C) 2009  Axel M?<axel.mueller@avanux.de> 
 * 
 * This file is part of LiveTracker.
 * 
 * LiveTracker is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * LiveTracker is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with LiveTracker.  If not, see <http://www.gnu.org/licenses/>.
 */
//package de.avanux.android.livetracker2;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
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.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpRequestBase;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;

import android.util.Log;

public class HttpUtil {

  // lat=50.2911 lon=8.9842

  private final static String TAG = "LiveTracker:HttpUtil";

  public static String get(String url) throws ClientProtocolException, IOException {
    Log.d(TAG, "HTTP GET " + url);
    HttpGet method = new HttpGet(url);
    HttpResponse response = executeMethod(method);
    return getResponseAsString(response);
  }

  public static String post(String url, Map<String, String> httpParameters) throws ClientProtocolException, IOException {
    Log.d(TAG, "HTTP POST " + url);
    List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(httpParameters.size());
    Set<String> httpParameterKeys = httpParameters.keySet();
    for (String httpParameterKey : httpParameterKeys) {
      nameValuePairs.add(new BasicNameValuePair(httpParameterKey, httpParameters.get(httpParameterKey)));
    }

    HttpPost method = new HttpPost(url);
    method.setEntity(new UrlEncodedFormEntity(nameValuePairs));
    HttpResponse response = executeMethod(method);
    return getResponseAsString(response);
  }

  private static HttpResponse executeMethod(HttpRequestBase method) throws ClientProtocolException, IOException {
    HttpResponse response = null;
    HttpClient client = new DefaultHttpClient();
    response = client.execute(method);
    Log.d(TAG, "executeMethod=" + response.getStatusLine());
    return response;
  }

  private static String getResponseAsString(HttpResponse response) throws IllegalStateException, IOException {
    String content = null;
    InputStream stream = null;
    try {
      if (response != null) {
        stream = response.getEntity().getContent();
        InputStreamReader reader = new InputStreamReader(stream);
        BufferedReader buffer = new BufferedReader(reader);
        StringBuilder sb = new StringBuilder();
        String cur;
        while ((cur = buffer.readLine()) != null) {
          sb.append(cur + "\n");
        }
        content = sb.toString();
      }
    } finally {
      if (stream != null) {
        stream.close();
      }
    }
    return content;
  }

}

   
  

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