JSON Parsing

- Add JSON Album parsing
- Add JSON Album's tracks parsing

Convert project to Maven project to add org.json from repos

- Update abstract classes to fit XML/JSON parsing

- Add JSON Album parsing JUnit
- Add JSON Album's tracks parsing JUnit

ENSIM/Java/tp-deezer3-HERBRON_Tanguy/pom.xml

@@ -25,4 +25,11 @@
       </plugin>
     </plugins>
   </build>
+  <dependencies>
+	  <dependency>
+		    <groupId>org.json</groupId>
+		    <artifactId>json</artifactId>
+		    <version>20180813</version>
+		</dependency>
+	</dependencies>
 </project>

ENSIM/Java/tp-deezer3-HERBRON_Tanguy/src/fr/ensim/json/JSONSearchAlbum.java

@@ -0,0 +1,64 @@
+package fr.ensim.json;
+
+import java.io.BufferedReader;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.util.ArrayList;
+import java.util.List;
+import org.apache.log4j.Logger;
+import org.json.JSONArray;
+import org.json.JSONObject;
+
+import fr.ensim.xml.deezer.AbstractSearchAlbum;
+import fr.ensim.xml.deezer.data.Album;
+import fr.ensim.xml.deezer.data.Artist;
+
+public class JSONSearchAlbum extends AbstractSearchAlbum {
+	private static final Logger LOG = Logger.getLogger(JSONSearchAlbum.class);
+	
+	public List<Album> readAlbums(InputStream in) throws Exception
+	{
+		LOG.debug(">>readAlbums");
+		
+		List<Album> listAlbums = new ArrayList<Album>();
+		
+		BufferedReader reader = new BufferedReader(new InputStreamReader(in));
+		
+		String file = "";
+		String line;
+		
+		while((line = reader.readLine()) != null)
+		{
+			file += line;
+		}
+		
+		JSONObject jsonObject = new JSONObject(file);
+		JSONArray dataArray = jsonObject.getJSONArray("data");
+		
+		for(int i = 0; i < dataArray.length(); i++)
+		{
+			JSONObject albumObject = dataArray.getJSONObject(i);
+			JSONObject artistObject = albumObject.getJSONObject("artist");
+			
+			Album album = new Album();
+			
+			album.setId(String.valueOf(albumObject.getInt("id")));
+			album.setTitle(albumObject.getString("title"));
+			album.setCover(albumObject.getString("cover"));
+			
+			Artist artist = new Artist();
+			
+			artist.setId(String.valueOf(artistObject.getInt("id")));
+			artist.setName(artistObject.getString("name"));
+			artist.setLink(artistObject.getString("link"));
+			artist.setPicture(artistObject.getString("picture"));
+			
+			album.setArtist(artist);
+			
+			listAlbums.add(album);
+		}
+		
+		LOG.debug("<<readAlbums");
+		return listAlbums;
+	}
+}

ENSIM/Java/tp-deezer3-HERBRON_Tanguy/src/fr/ensim/json/JSONSearchAlbumTracks.java

@@ -0,0 +1,91 @@
+package fr.ensim.json;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+
+import org.apache.log4j.Logger;
+import org.json.JSONArray;
+import org.json.JSONObject;
+import org.w3c.dom.Document;
+import org.xml.sax.SAXException;
+
+import fr.ensim.xml.deezer.data.Track;
+
+public class JSONSearchAlbumTracks {
+	private static Logger LOG = Logger.getLogger(JSONSearchAlbumTracks.class);
+
+	public static List<Track> find(String id) throws IOException, ParserConfigurationException, SAXException {
+		LOG.debug(">>albums");
+
+		// Constitution de l'URL
+		StringBuilder sUrl = new StringBuilder();
+		sUrl.append("http://api.deezer.com/2.0/album/");
+		sUrl.append(id);
+
+		URL url = new URL(sUrl.toString());
+
+		LOG.debug(url);
+
+		HttpURLConnection cnx = (HttpURLConnection) url.openConnection();
+		cnx.setConnectTimeout(5000);
+		cnx.setReadTimeout(5000);
+		cnx.setRequestMethod("GET");
+		cnx.setDoInput(true);
+		cnx.addRequestProperty("Accept-Language", "en;q=0.6,en-us;q=0.4,sv;q=0.2");
+
+		try {
+			if (cnx.getResponseCode() == HttpURLConnection.HTTP_OK) {
+				return find(cnx.getInputStream());
+			}
+		} finally {
+			cnx.disconnect();
+		}
+
+		LOG.debug("<<albums");
+		return null;
+	}
+
+	protected static List<Track> find(InputStream in) throws SAXException, ParserConfigurationException, IOException {
+		LOG.debug(">>find");
+
+		ArrayList<Track> listTracks = new ArrayList<Track>();
+
+		BufferedReader reader = new BufferedReader(new InputStreamReader(in));
+		
+		String file = "";
+		String line;
+		
+		while((line = reader.readLine()) != null)
+		{
+			file += line;
+		}
+		
+		JSONObject jsonObject = new JSONObject(file);
+		JSONObject tracksDataObject = jsonObject.getJSONObject("tracks");
+		JSONArray dataArray = tracksDataObject.getJSONArray("data");
+		
+		for(int i = 0; i < dataArray.length(); i++)
+		{
+			JSONObject trackObject = dataArray.getJSONObject(i);
+			Track track = new Track();
+			
+			track.setPreview(trackObject.getString("preview"));
+			track.setTitle(trackObject.getString("title"));
+			
+			listTracks.add(track);
+		}
+
+		LOG.debug(">>find");
+		return listTracks;
+	}
+}

ENSIM/Java/tp-deezer3-HERBRON_Tanguy/src/fr/ensim/xml/deezer/AbstractSearchAlbum.java

@@ -29,7 +29,7 @@ public abstract class AbstractSearchAlbum {
    * @throws ParserConfigurationException
    * @throws SAXException
    */
-  public List<Album> find(String author) throws IOException,
+  public List<Album> find(String author, boolean isXML) throws IOException,
                                         ParserConfigurationException,
                                         SAXException {
     LOG.debug(">>find author="+author);
@@ -38,7 +38,7 @@ public abstract class AbstractSearchAlbum {
     StringBuilder sUrl = new StringBuilder();
     sUrl.append("http://api.deezer.com/2.0/search/album?q=");
     sUrl.append(author);
-    sUrl.append("&output=xml");
+    if(isXML) sUrl.append("&output=xml");
 
     URL url = new URL(sUrl.toString());
     LOG.debug(url);

ENSIM/Java/tp-deezer3-HERBRON_Tanguy/src/fr/ensim/xml/deezer/AbstractSearchAlbumTracks.java

@@ -24,14 +24,14 @@ public abstract class AbstractSearchAlbumTracks {
    * @return la liste des chansons.
    * @throws Exception
    */
-  public List<Track> find(String id) throws Exception {
+  public List<Track> find(String id, boolean isXML) throws Exception {
     log.debug(">>find");
 
     // Constitution de l'URL
     StringBuilder sUrl = new StringBuilder();
     sUrl.append("http://api.deezer.com/2.0/album/");
     sUrl.append(id);
-    sUrl.append("?output=xml");
+    if(isXML) sUrl.append("&output=xml");
 
     URL url = new URL(sUrl.toString());