Fixed Nullpointer Exception on saveGeneralData

Increased RetryTimes
Decreased Activities per_page value while getting the activities

export/src/export/Main.java

@@ -36,9 +36,9 @@ public class Main
 {
 	public static final String baseUrl = "https://www.strava.com/api/v3/";
 	public static final String tokenUrl = "https://www.strava.com/api/v3/oauth/token";
-	private static final int retryTimes = 20;
+	private static final int retryTimes = 100;
 	private static final int httpCodeLimitReached = 429;
-	private static int athleteId = 0;
+	private static int athleteId = -1;
 	private static JSONParser parser = new JSONParser();
 	private static String testRequest;
 	private static File errorFile;
@@ -191,7 +191,8 @@ public class Main
 		int pageIndex = 1;
 		while (true)
 		{							 
-			String requestExtension = "athlete/activities?per_page=500&page=" + pageIndex;
+			//TODO: this 'per_page' value could perhaps be the root of all evil
+			String requestExtension = "athlete/activities?per_page=100&page=" + pageIndex;
 			String json = makeGetRequestWithRetry(requestExtension, token);
 			if (json==null || json.isEmpty() || json.isBlank() || json.equals("") || json.equals("[]")) // don't know where the last page is...
 			{
@@ -279,6 +280,7 @@ public class Main
 				//tried enough times, so stop now
 				if(count >= retryTimes)
 				{
+					writeError("Athlete: "+athleteId+" Retry limit reached. Last error code: "+e.getResponseCode());
 					return null;
 				}
 				//request limit is reached, try again later
@@ -341,6 +343,11 @@ public class Main
 			writeError("Athlete " + athleteId + ": Error parsing general information.");
 			return null;
 		}
+		catch (NullPointerException e)
+		{
+			writeError("Athlete " + athleteId + ": No general information found.");
+			return null;			
+		}
 	}
 
 	/**
@@ -415,7 +422,7 @@ public class Main
 		}
 		catch (IOException e)
 		{
-			writeError("Error while handling GET request: " + e.toString());
+			writeError("Athlete: "+athleteId+" Error while handling GET request: " + e.toString());
 		}
 		return "";
 	}
@@ -437,7 +444,7 @@ public class Main
 			//excluded error messages appearing on missing streams and reached rate limit
 			if(responseCode != HttpURLConnection.HTTP_NOT_FOUND && responseCode!= httpCodeLimitReached)
 			{
-				writeError("Wrong response code: " + responseCode);				
+				writeError("Athlete: "+athleteId+" Wrong response code: " + responseCode);				
 			}
 			throw new ResponseCodeWrongException(responseCode);
 		}
@@ -503,7 +510,7 @@ public class Main
 		}
 		catch (IOException e)
 		{
-			writeError("Error while handling POST request: " + e.toString());
+			writeError("Athlete: "+athleteId+"Error while handling POST request: " + e.toString());
 		}
 		return "";
 	}
@@ -579,11 +586,12 @@ public class Main
 		int zipcount =1;
 		for (Triplet oneUser : refreshTokens)
 		{
+			athleteId++;
 			// a is access_token and b is new refresh_token
 			Tuple withAccessToken = getAccessToken(oneUser);
 			if (withAccessToken == null)
 			{
-				writeError("Coulnd't get new access token for client "+athleteId);	
+				writeError("Couldn't get new access token for client "+athleteId);	
 				continue;
 			}
 			newRefreshTokens.add(new Triplet(oneUser.getA(), oneUser.getB(), withAccessToken.getB()));
@@ -607,7 +615,6 @@ public class Main
 					writeError("Files coulnd't be zipped");
 				}				
 			}
-			athleteId++;
 		}
 		//zip the rest
 		try