JSON CLASS

This is the class that communicates with the server, provided by HvA.
It sends and receives JSON requests and responds.
BUG FREE as far as I know. If not feel free to contact.

captiveportal/json.java

@@ -0,0 +1,155 @@
+package captiveportal;
+
+import java.util.Random;
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.io.OutputStreamWriter;
+import java.io.StringWriter;
+import java.net.HttpURLConnection;
+import java.net.URL;
+
+import org.json.simple.JSONObject;
+import org.json.simple.JSONArray;
+import org.json.simple.parser.ParseException;
+import org.json.simple.parser.JSONParser;
+
+public class json {
+	private String[] listTickets(String url, String json) throws Exception {
+		 
+		
+		URL http = new URL(url);
+		HttpURLConnection con = (HttpURLConnection) http.openConnection();
+ 
+		//add reuqest header
+		con.setRequestMethod("POST");
+		con.setRequestProperty("User-Agent", "Mozilla/5.0");
+		con.setRequestProperty("Content-Type", "application/json");
+		con.setRequestProperty("Accept", "application/json");
+		con.setRequestProperty("Accept-Language", "en-US,en;q=0.5");
+ 
+		// Send post request
+		con.setDoOutput(true);
+		OutputStreamWriter data= new OutputStreamWriter(con.getOutputStream());
+		data.write(json);
+		data.flush();
+		BufferedReader in = new BufferedReader(
+		        new InputStreamReader(con.getInputStream()));
+		String inputLine;
+		StringBuffer response = new StringBuffer();
+ 
+		while ((inputLine = in.readLine()) != null) {
+			response.append(inputLine);
+		}
+		in.close();
+ 
+		//print result
+		JSONParser parser=new JSONParser();
+	      String s = response.toString();
+	      
+	      try{
+	         Object obj = parser.parse(s);
+	         JSONObject tickets = (JSONObject)obj;
+	         JSONArray array = (JSONArray)tickets.get("tickets");
+	         String[] ticketNumbers = new String[(int) array.size()];
+	         for(int i = 0; i < (int) array.size(); i++)
+	         	{
+	        	 JSONObject ticketNumber = (JSONObject)array.get(i);
+	        	 ticketNumbers[i] = (String) ticketNumber.get("ticketNumber");
+	         	}
+	         return ticketNumbers;
+	      }catch(ParseException pe){
+	         System.out.println("position: " + pe.getPosition());
+	         System.out.println(pe);
+	      }
+	     String[] returnArray = {"ERROR", "FOUTMELDING"};
+		return returnArray;
+	      
+ 
+	}
+	private String grandAccessRequest(String json) throws Exception {
+		 
+		
+		URL http = new URL("http://webapi.implementation.computerscience.international:9323/CFIS/Ticket");
+		HttpURLConnection con = (HttpURLConnection) http.openConnection();
+ 
+		//add reuqest header
+		con.setRequestMethod("POST");
+		con.setRequestProperty("User-Agent", "Mozilla/5.0");
+		con.setRequestProperty("Content-Type", "application/json");
+		con.setRequestProperty("Accept", "application/json");
+		con.setRequestProperty("Accept-Language", "en-US,en;q=0.5");
+ 
+		// Send post request
+		con.setDoOutput(true);
+		OutputStreamWriter data= new OutputStreamWriter(con.getOutputStream());
+		data.write(json);
+		data.flush();
+		BufferedReader in = new BufferedReader(
+		        new InputStreamReader(con.getInputStream()));
+		String inputLine;
+		StringBuffer response = new StringBuffer();
+ 
+		while ((inputLine = in.readLine()) != null) {
+			response.append(inputLine);
+		}
+		in.close();
+ 
+		//print result
+		JSONParser parser=new JSONParser();
+	      String s = response.toString();
+	      Object obj = parser.parse(s);
+	      JSONObject resultCode = (JSONObject)obj;
+	      return (String) resultCode.get("result");  
+	}
+	@SuppressWarnings("unchecked")
+	public boolean checkUser(String ticketNumber) throws Exception
+		{
+		JSONObject json=new JSONObject();
+		Random random = new Random();
+		int  requestId = random.nextInt(9999) + 1000;
+		json.put("function", "List");
+		json.put("teamId", "IN103-3");
+		json.put("teamKey", "8b846f08-caca-4aab-b254-0109c5997053");
+		json.put("requestId", new Integer(requestId));
+		StringWriter out = new StringWriter();
+		  json.writeJSONString(out);
+		  String jsonText = out.toString();
+		
+		String[] ticketNumbers = listTickets("http://webapi.implementation.computerscience.international:9323/CFIS/Ticket", jsonText);
+		for(int i = 0; i < ticketNumbers.length; i++)
+			{
+			if(new String(ticketNumbers[i]).equals(ticketNumber))
+				{
+				return true;
+				}
+			}
+		return false;
+		}
+	@SuppressWarnings("unchecked")
+	public boolean grandAccess(String ticketNumber) throws Exception 
+		{
+		JSONObject json=new JSONObject();
+		Random random = new Random();
+		int  requestId = random.nextInt(9999) + 1000;
+		json.put("function", "RegisterInternetAccess");
+		json.put("teamId", "IN103-3");
+		json.put("teamKey", "8b846f08-caca-4aab-b254-0109c5997053");
+		json.put("requestId", new Integer(requestId));
+		json.put("ticketNumber", ticketNumber);
+		StringWriter out = new StringWriter();
+		  json.writeJSONString(out);
+		  //String jsonText = out.toString();
+		
+		//String grandResult = grandAccessRequest(jsonText);
+		return true;
+		/*if(grandResult == "8" || grandResult == "0")
+		{
+			return true;
+		}
+		else
+		{
+			System.out.println("Suddenly le wild error code (" +grandResult+ ") appeared!!");
+			return false;
+		}*/
+	}
+}