Android Open Source - Orlib Http Manager

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License

The source code is released under:

GNU Lesser General Public License

Java Source Code

/* 
 * 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
 */*from   ww  w. jav  a  2s. c  o  m*/
 *      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 info.guardianproject.net.http;


import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Properties;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
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.entity.mime.MultipartEntity;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.entity.mime.content.StringBody;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;

import android.util.Log;

/*
 * General HTTP handler class
 */
public class HttpManager {
  
  private final static String TAG = "HttpManager";
  
  private final static String POST_MIME_TYPE = "application/x-www-form-urlencoded";
  
  public static String doGet (String serviceEndpoint, Properties props) throws Exception
  {

    HttpClient httpClient = new SocksHttpClient();

    StringBuilder uriBuilder = new StringBuilder(serviceEndpoint);
  
    StringBuffer sbResponse = new StringBuffer ();
    
    Enumeration<Object> enumProps = props.keys();
    String key, value = null;
    
    uriBuilder.append('?');
    
    while (enumProps.hasMoreElements())
    {
      key = (String)enumProps.nextElement();
      value = (String)props.get(key);
      uriBuilder.append(key);
      uriBuilder.append('=');
      uriBuilder.append(java.net.URLEncoder.encode(value));
      uriBuilder.append('&');
      
    }
    

    HttpGet request = new HttpGet(uriBuilder.toString());
    HttpResponse response = httpClient.execute(request);

    int status = response.getStatusLine().getStatusCode();

    // we assume that the response body contains the error message
    if (status != HttpStatus.SC_OK) {
      ByteArrayOutputStream ostream = new ByteArrayOutputStream();
      response.getEntity().writeTo(ostream);
      Log.e("HTTP CLIENT", ostream.toString());
      
      return null;
      
    } else {
      InputStream content = response.getEntity().getContent();
      // <consume response>
      
      BufferedReader reader = new BufferedReader (new InputStreamReader(content));
      String line;
      
      while ((line = reader.readLine())!=null)
        sbResponse.append(line);
      
      content.close(); // this will also close the connection
    }
    
    return sbResponse.toString();
    
  }
  
  public static String doPost (String serviceEndpoint, Properties props) throws Exception
  {

    DefaultHttpClient httpClient = new SocksHttpClient();
    
    HttpPost request = new HttpPost(serviceEndpoint);
    HttpResponse response = null;
    HttpEntity entity = null;
      
    StringBuffer sbResponse = new StringBuffer ();
    
    Enumeration<Object> enumProps = props.keys();
    String key, value = null;
    
     List <NameValuePair> nvps = new ArrayList <NameValuePair>();
    
    while (enumProps.hasMoreElements())
    {
      key = (String)enumProps.nextElement();
      value = (String)props.get(key);
      nvps.add(new BasicNameValuePair(key, value));
      
      Log.i(TAG,"adding nvp:" + key + "=" + value);
    }
    
    UrlEncodedFormEntity uf = new UrlEncodedFormEntity(nvps, HTTP.UTF_8);
    
    Log.i(TAG, uf.toString());
    
    request.setEntity(uf);
         
    request.setHeader("Content-Type", POST_MIME_TYPE);
    
    Log.i(TAG, "http post request: " + request.toString());
    
         // Post, check and show the result (not really spectacular, but works):
         response = httpClient.execute(request);
         entity = response.getEntity(); 
         
    int status = response.getStatusLine().getStatusCode();

    // we assume that the response body contains the error message
    if (status != HttpStatus.SC_OK) {
      ByteArrayOutputStream ostream = new ByteArrayOutputStream();
      entity.writeTo(ostream);
      
      Log.e(TAG, " error status code="+status);
      Log.e(TAG, ostream.toString());
        
      return null;
    } else {
      InputStream content = response.getEntity().getContent();
      // <consume response>
      
      BufferedReader reader = new BufferedReader (new InputStreamReader(content));
      String line;
      
      while ((line = reader.readLine())!=null)
        sbResponse.append(line);
      
      content.close(); // this will also close the connection
      
      return sbResponse.toString();
    }
    
    
    
  }
  
  
  public static String uploadFile (String serviceEndpoint, Properties properties, String fileParam, String file) throws Exception
  {


    HttpClient httpClient = new DefaultHttpClient();

    HttpPost request = new HttpPost(serviceEndpoint);
    MultipartEntity entity = new MultipartEntity();
      
    Iterator<Map.Entry<Object,Object>> i = properties.entrySet().iterator();
    while (i.hasNext())
    {
           Map.Entry<Object,Object> entry = (Map.Entry<Object,Object>) i.next();
           String key = (String) entry.getKey();
           String val = (String) entry.getValue();
           entity.addPart(key, new StringBody(val));
         
     }
    File upload = new File(file);
    Log.i("httpman","upload file (" + upload.getAbsolutePath() + ") size=" + upload.length());
    
    entity.addPart(fileParam, new FileBody(upload));
    request.setEntity(entity);
    
    
    HttpResponse response = httpClient.execute(request);
    int status = response.getStatusLine().getStatusCode();

    if (status != HttpStatus.SC_OK) {
  
    } else {
      
    }

    return response.toString();
    
  }
  
  
}

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