Android Open Source - fco-alerts-app Server Comms

From Project

Back to project page fco-alerts-app.

License

The source code is released under:

MIT License

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Java Source Code

package uk.co.eleusis.android.fcoalerts;
/*from   w ww  .  ja  va  2 s. c o  m*/
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import org.apache.http.HttpEntity;
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.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;

import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;

/**
 * Methods for communicating with the fco-alerts-server online via HTTP
 * 
 * @author keithm
 *
 */
public class ServerComms 
{
  public String getRequest(String url) throws ClientProtocolException, IOException
  {
    HttpClient client = new DefaultHttpClient();
    HttpGet method = new HttpGet(url);
    HttpResponse response = client.execute(method);
    HttpEntity entity = response.getEntity();
        InputStream is = entity.getContent();
        BufferedReader reader = new BufferedReader(new InputStreamReader(is));
        String line;
        StringBuilder content = new StringBuilder();
        while((line = reader.readLine()) != null)
        {
          content.append(line);
          content.append("\n");
        }
     
        reader.close();
        return content.toString();
  }
  
  public List<Map<String, Object>> parseJsonList(String jsonList)
  {
    Gson gson = new Gson();
    Type myType = new TypeToken<List<Map<String, Object>>>() {}.getType();
    return gson.fromJson(jsonList, myType);
  }
  
  public String postRequest(String url, Map<String, String> params) throws IOException
  {
    HttpClient client = new DefaultHttpClient();
    HttpPost method = new HttpPost(url);
    List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
    for (String key : params.keySet())
    {
      nameValuePairs.add(new BasicNameValuePair(key, params.get(key)));
    }
    
    method.setEntity(new UrlEncodedFormEntity(nameValuePairs));
    
    HttpResponse response = client.execute(method);
    BufferedReader reader = 
        new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
    String line = "";
        StringBuilder content = new StringBuilder();
    while ((line = reader.readLine()) != null) 
    {
          content.append(line);
          content.append("\n");  
    }
    reader.close();
    return content.toString();
  }
}

Java Source Code List