Question Regarding UUIDs

Im trying up update my ban plugin but dont know how to get an offline players uuid and this just came to mind

on a non griefing server i use prism on mine what will happen if JohnDoe griefs and changes his name to janedoe his uuid is nolonger going to be with JohnDoe so then the banned player can just come on again because he changes his name before he is banned

 

When a player changes his name, his uuid doesn't. Why wouldn't he stay banned if he changes his name?

 

This will help you with getting player's UUID's by their name: http://forums.bukkit.org/threads/player-name-uuid-fetcher.250926/

If you ban a player using their UUID, it shouldn't matter (if it's set up correctly) if they change their name as they will still be connected to the same UUID. If you bane them by their name then a name change will allow them on to your server again. And if they have multiple accounts your best bet would be to ban them by their IP however that still isn't full proof.

 

because if im trying to get a uuid from a name the name is nolonger linked to that uuid the new name is wouldnt it
cuz the name can be used by someojne else

Got this error

Code:

[16:24:47 INFO]: IcyRelic issued server command: /ban IcyRelic test
[16:24:47 WARN]: java.io.IOException: Server returned HTTP response code: 400 for URL: https://api.mojang.com/profiles/minecraft
[16:24:47 WARN]:    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1626)
[16:24:47 WARN]:    at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:254)
[16:24:47 WARN]:    at me.icyrelic.com.UUIDUtils.call(UUIDUtils.java:39)
[16:24:47 WARN]:    at me.icyrelic.com.UUIDUtils.getUUIDOf(UUIDUtils.java:94)
[16:24:47 WARN]:    at me.icyrelic.com.Commands.ban.onCommand(ban.java:43)
[16:24:47 WARN]:    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
[16:24:47 WARN]:    at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:180)
[16:24:47 WARN]:    at org.bukkit.craftbukkit.v1_7_R3.CraftServer.dispatchCommand(CraftServer.java:728)
[16:24:47 WARN]:    at net.minecraft.server.v1_7_R3.PlayerConnection.handleCommand(PlayerConnection.java:985)
[16:24:47 WARN]:    at net.minecraft.server.v1_7_R3.PlayerConnection.a(PlayerConnection.java:830)
[16:24:47 WARN]:    at net.minecraft.server.v1_7_R3.PacketPlayInChat.a(PacketPlayInChat.java:28)
[16:24:47 WARN]:    at net.minecraft.server.v1_7_R3.PacketPlayInChat.handle(PacketPlayInChat.java:65)
[16:24:47 WARN]:    at net.minecraft.server.v1_7_R3.NetworkManager.a(NetworkManager.java:180)
[16:24:47 WARN]:    at net.minecraft.server.v1_7_R3.ServerConnection.c(ServerConnection.java:81)
[16:24:47 WARN]:    at net.minecraft.server.v1_7_R3.MinecraftServer.v(MinecraftServer.java:713)
[16:24:47 WARN]:    at net.minecraft.server.v1_7_R3.DedicatedServer.v(DedicatedServer.java:283)
[16:24:47 WARN]:    at net.minecraft.server.v1_7_R3.MinecraftServer.u(MinecraftServer.java:576)
[16:24:47 WARN]:    at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java:482)
[16:24:47 WARN]:    at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:628)
[16:24:47 INFO]: IcyRelic lost connection: §6You were banned by: §eIcyRelic§6 Reason: §etest
[16:24:47 INFO]: ||Owner|| IcyRelic Has Left The Server!
[16:24:47 INFO]: icyrelic was banned by IcyRelic. Reason: test

and here is what it put in my database



returned it as null

My code for getting the uuid

Code:java

 String player = args[0];
UUID uid = null;
try {
uid = UUIDUtils.getUUIDOf(player);
} catch (Exception e) {
e.printStackTrace();
}

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Bump i still need to resolve this error