Android Open Source - BookHunter Info Task

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Back to project page BookHunter.

License

The source code is released under:

Apache License

Java Source Code

package com.appspot.brownbookhunter;
//w w w .  j a v  a  2  s  . c  o  m
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Callable;

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.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.util.Log;

public class InfoTask implements Callable<Book> {

  private static final String TAG = "RecTask";
  private String searchTerm;
  public InfoTask(String searchTerm) {
    this.searchTerm = searchTerm;
    
  }
  @Override
  public Book call() throws Exception {
    Book book = null;
    String recUrl = "http://brownbookhunter.appspot.com/info";
    HttpClient hc = new DefaultHttpClient();
    try{
      HttpPost request = new HttpPost(recUrl);
      
      List<NameValuePair> params = new ArrayList<NameValuePair>(2);
      params.add(new BasicNameValuePair("call_no", searchTerm));
      request.setEntity(new UrlEncodedFormEntity(params, "UTF-8"));

      HttpResponse response = hc.execute(request);
      
      JSONObject info = readResponse(response);
      book = new Book(info);

      Log.d(TAG, "Hopefully this is something?" + info);
      Log.d(TAG, "Requested book is " + book);
      
      
    } catch (JSONException e) {
      Log.e(TAG, "Json exception: " + e.getMessage());
      Log.e(TAG, "Json exception: " + e.toString());
      e.printStackTrace();
    } catch (UnsupportedEncodingException e) {
      Log.e(TAG, "Unsupported encoding: " + e.getMessage());
    } catch (ClientProtocolException e) {
      Log.e(TAG, "client protocol: " + e.getMessage());
    } catch (IOException e) {
      Log.e(TAG, "io exception: " + e.getMessage());
    } finally {
      hc.getConnectionManager().shutdown();
    }
    return book;
  }

  private JSONObject readResponse(HttpResponse response) throws IllegalStateException, IOException, JSONException {
    InputStream is = response.getEntity().getContent();
    StringBuilder result = new StringBuilder();
    int c;
    while ((c = is.read()) != -1) {
      result.append((char) c);
    }
    return new JSONObject(result.toString());
  }

}

Java Source Code List

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