[TUT] Bukkit's new FileConfiguration API! Create a YAML configuration!

How do I get the values from the config file in a different class?

 

Code:java

plugin.getConfig().getString(path);

Of course there's more then just getString();

 

Thanks WalkerCrouse

Still havin issues though, plugin cannot be resolved? I have tried just getConfig() but no method.

Code:

package me.herghost.Fiery.functions;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;

public class sqlFunctions {
   
     private String getString(String m) {
            return getString(m);
        }

        String user = plugin.getConfig().getString("settings.mysql.user");
        String pass = plugin.getConfig().getString("settings.mysql.pass");
        String url = "jdbc:mysql://localhost:3306/Fiery";
    //}
 
    public void create_table_users() throws SQLException
    {
        Connection conn = DriverManager.getConnection(url, user, pass);
        PreparedStatement sampleQueryStatement = conn.prepareStatement("CREATE TABLE IF NOT EXISTS users (p_id int NOT NULL AUTO_INCREMENT KEY, p_name varchar(255), p_ip varchar(255))");
        sampleQueryStatement.executeUpdate();
        sampleQueryStatement.close();
        conn.close();
    }
  
    public void create_table_userhomes() throws SQLException
    {
        Connection conn = DriverManager.getConnection(url, user, pass);
        PreparedStatement sampleQueryStatement = conn.prepareStatement("CREATE TABLE IF NOT EXISTS userhomes (world varchar(128), p_name varchar(255) not null, home_x varchar(500), home_y varchar(500), home_z varchar(500), world1 varchar(128), home1_x varchar(500), home1_y varchar(500), home1_z varchar(500), world2 varchar(128), home2_x varchar(500), home2_y varchar(500), home2_z varchar(500), primary key(p_name))");
        sampleQueryStatement.executeUpdate();
        sampleQueryStatement.close();
        conn.close();
    }
     
}

 

Declare a private instance of your plugin...

Code:java

private MyPlugin plugin;

 

Null pointer exceptions I think the issue is that I am using enjikaka s code, not the one in the thread title. I will swap to that and see if it works. Thanks for your time

Ok still having issues

Console:

Code:

2011-11-20 23:30:37 [SEVERE] Error occurred while enabling Fiery v0.1 (Is it up to date?): null
java.lang.NullPointerException
    at me.herghost.Fiery.functions.sqlFunctions.<init>(sqlFunctions.java:17)
    at me.herghost.Fiery.Fiery.onEnable(Fiery.java:48)
    at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:183)
    at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:957)
    at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:280)
    at org.bukkit.craftbukkit.CraftServer.loadPlugin(CraftServer.java:176)
    at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:159)
    at net.minecraft.server.MinecraftServer.t(MinecraftServer.java:337)
    at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:324)
    at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:161)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:388)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:457)

My main class

Code:

package me.herghost.Fiery;

import java.sql.SQLException;
import java.util.logging.Logger;

import me.herghost.Fiery.commands.banCommand;
import me.herghost.Fiery.commands.giveCommand;
import me.herghost.Fiery.commands.homeCommand;
import me.herghost.Fiery.commands.itemCommand;
import me.herghost.Fiery.commands.kickCommand;
import me.herghost.Fiery.commands.sethomeCommand;
import me.herghost.Fiery.commands.spawnCommand;
import me.herghost.Fiery.commands.unbanCommand;
import me.herghost.Fiery.functions.sqlFunctions;

import org.bukkit.configuration.file.FileConfiguration;
import org.bukkit.event.Event;
import org.bukkit.plugin.PluginManager;
import org.bukkit.plugin.java.JavaPlugin;

public class Fiery extends JavaPlugin {
	Logger log = Logger.getLogger("Minecraft");

	//The Listener
	private final FieryPlayerListener playerListener = new FieryPlayerListener(this);	
	//Config File
	FileConfiguration config;
	//OnEnable Methods
	public void onEnable(){
		//Send Message to Console
		log.info("Fiery Plugin Enabled - Beta");
		//Initialize config file
		loadConfiguration();
		//Create Tables
		try
			{
			    sqlFunctions method = new sqlFunctions();
	        	method.create_table_users();
	        	method.create_table_userhomes();
	        	log.info("Fiery Database Tables OK!");
			}
		catch
			(SQLException e1)
				{
					log.info("Something Fucked Up");
					e1.printStackTrace();
	        	}
		//register commands
		this.getCommand("item").setExecutor(new itemCommand());
		this.getCommand("give").setExecutor(new giveCommand());
		this.getCommand("kick").setExecutor(new kickCommand());
		this.getCommand("spawn").setExecutor(new spawnCommand());
		this.getCommand("ban").setExecutor(new banCommand());
		this.getCommand("unban").setExecutor(new unbanCommand());
		this.getCommand("sethome").setExecutor(new sethomeCommand());
		this.getCommand("home").setExecutor(new homeCommand());
		//register listeners
		PluginManager pm = this.getServer().getPluginManager();
		pm.registerEvent(Event.Type.PLAYER_JOIN,playerListener, Event.Priority.Normal, this);
	}
	public void onDisable(){
		log.info("Fiery Plugin Disabled - Goodbye!");
	}
	public void loadConfiguration()
	{
		getConfig().addDefault("settings.mysql.user", "mysql username");
		getConfig().addDefault("settings.mysql.pass", "mysql password");
		getConfig().options().copyDefaults(true);
        saveConfig();
    }

}

and finally, how I am trying to get the strings for the mysql data

Code:

package me.herghost.Fiery.functions;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;

import me.herghost.Fiery.Fiery;



public class sqlFunctions {
	private Fiery plugin;
	 String user = plugin.getConfig().getString("settings.mysql.user");
     String pass = plugin.getConfig().getString("settings.mysql.pass");
	 String url = "jdbc:mysql://localhost:3306/Fiery";
	public void create_table_users() throws SQLException
	{
		Connection conn = DriverManager.getConnection(url, user, pass);
		PreparedStatement sampleQueryStatement = conn.prepareStatement("CREATE TABLE IF NOT EXISTS users (p_id int NOT NULL AUTO_INCREMENT KEY, p_name varchar(255), p_ip varchar(255))");
		sampleQueryStatement.executeUpdate();
		sampleQueryStatement.close();
		conn.close();
	}

	public void create_table_userhomes() throws SQLException
	{
		Connection conn = DriverManager.getConnection(url, user, pass);
		PreparedStatement sampleQueryStatement = conn.prepareStatement("CREATE TABLE IF NOT EXISTS userhomes (world varchar(128), p_name varchar(255) not null, home_x varchar(500), home_y varchar(500), home_z varchar(500), world1 varchar(128), home1_x varchar(500), home1_y varchar(500), home1_z varchar(500), world2 varchar(128), home2_x varchar(500), home2_y varchar(500), home2_z varchar(500), primary key(p_name))");
		sampleQueryStatement.executeUpdate();
		sampleQueryStatement.close();
		conn.close();
	}



}

Anyone spot whats up? No errors in eclipse.

Thanks

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

 

@herghost
Since there is a little bug with one of the recent commits,
You are required to have a default config.yml, even if it is empty.

 

I have one in the same place as my plugin.yml. If I remove the stuff in the mySQL functions it loads fine.

 

@herghost
your local plugin variable has not been instantiated.

asides from that, getConfig cannot be used in field initializers and static block initializers.

 

Thanks, so what is the correct method of doing this?

Edit: I have initialized the plugin, just not sure how to get the value from config.yml?

Edit2: I now have this:

Code:

public class sqlFunctions
{

	public sqlFunctions(Fiery instance)
	{
		this.plugin = instance;
	}
	 Fiery plugin;
	 String user = plugin.config.getString("settings.mysql.user");
	 String pass = plugin.config.getString("settings.mysql.pass");
	 String url = "jdbc:mysql://localhost:3306/Fiery";
	public void create_table_users() throws SQLException
	{
		Connection conn = DriverManager.getConnection(url, user, pass);
		PreparedStatement sampleQueryStatement = conn.prepareStatement("CREATE TABLE IF NOT EXISTS users (p_id int NOT NULL AUTO_INCREMENT KEY, p_name varchar(255), p_ip varchar(255))");
		sampleQueryStatement.executeUpdate();
		sampleQueryStatement.close();
		conn.close();
	}

But still getting the same error, not going to have much hair left at this rate

@Sagacious_Zed - Any other hints available?! Thanks for your time so far

 

Very helpful, thanks! Got it working right off. However, I am a little stuck... I am working on a command-on-join plugin, and I want the user to be forced to do a command on join. I have everything to work, but I want they amount of commands to vary, so say one person sets the config to have 1 commands, the minium, and another person has 10 commands, or 9, or something... how would I go about making it so it can vary? (I'm not going to reread that because I'm sure I repeated the same thing 10 times...)

 

So to clarify, a player executes 'x' amount of command on join? And it can differ between players?

If that's the case you could make a user field and set it to a number, and get that number on join...

Code:

users:
  wjcrouse913:
    commands: 2

 

I guess I didn't clarify... okay, here is how the config is set up:

Code:

Commands:
  commandOne: hi
  commandTwo: hi2

It's like that because I specified it in the plugin, when creating the config. Well, what if the server admin wanted them to perform 3 commands? If they added

Code:

commandThree: hi3

The plugin does not recognize that or anything, so how would I get it to?

 

I think an easier solution would be to get a list of commands...

Code:

Commands:
  - hi
  - hi2
  - hi3

Then they could just add commands to the list, you could get the list, and iterate through the list for each command

 

Okay, I've never done anything remotely close to this, so... how would I do this? I hope I'm not making you say "What an idiot..."

 

See "Getting a List", "Setting a List", and "Adding to a List"

 

It resets the config when I stop/rerun the server... why is this?

 

Err.. code?

 

Ahh, right. Fail.

Okay, here's my main class (JoinCommand.class)

Show Spoiler Hide Spoiler

Code:Java

 
package me.kohle.JoinCommand;
 
import java.util.Arrays;
import java.util.logging.Logger;
 
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.Event.Priority;
import org.bukkit.event.Event.Type;
import org.bukkit.plugin.PluginManager;
import org.bukkit.plugin.java.JavaPlugin;
 
public class JoinCommand extends JavaPlugin {
	public void loadConfiguration(){
	     String[] list = {"hi", "hi2"};
	     this.getConfig().set("Commands", Arrays.asList(list));
	     //See "Creating you're defaults"
	     this.getConfig().options().copyDefaults(true); // NOTE: You do not have to use "plugin." if the class extends the java plugin
	     //Save the config whenever you manipulate it
	     this.saveConfig();
	}
 
	public PluginManager pm;
	private JoinCommandPlayerListener playerListener = new JoinCommandPlayerListener(this);
	Logger log = Logger.getLogger("Minecraft");
 
	  public void onEnable() {
		  loadConfiguration();
		  pm = getServer().getPluginManager();
		  pluginInfo("enabled, with a configuration file!");
		  pm.registerEvent(Type.PLAYER_JOIN, playerListener, Priority.High, this);
	  }
	  public void onDisable() {
	    pluginInfo("disabled.");
	    this.saveConfig();
	  }
	  public static void pluginInfo(String message) {
	    	String v = "1.0-i";
	    	System.out.println("[JoinCommand] Version " + v + " " + message);
	  }
	  public boolean onCommand(CommandSender sender, Command command, String commandLabel, String[] args) {
		  Player player =  (Player)sender;
		  if(commandLabel.equalsIgnoreCase("hi")) {
			  player.sendMessage("It works! Wow. I am... shocked.");
			  return true;
		  } else if(commandLabel.equalsIgnoreCase("hi2")) {
			  player.sendMessage("Wow, another command works. I guess Kohle is good at this, eh?");
			  return true;
		  }
		return false;
	  }
}

Now, here is my player listener class (JoinCommandPlayerListener.class)

Show Spoiler Hide Spoiler

Code:Java

 
package me.kohle.JoinCommand;
 
import java.util.List;
 
import org.bukkit.entity.Player;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.event.player.PlayerListener;
 
 
 
public class JoinCommandPlayerListener extends PlayerListener {
	public JoinCommand plugin;
 
 
	public JoinCommandPlayerListener(JoinCommand instance) {
		plugin = instance;
	}
 
	@Override
	public void onPlayerJoin(PlayerJoinEvent event) {
		Player player = event.getPlayer();
		//If the player is not present when the player joins:
		if(!(player == null)) {
			System.out.println("[JoinCommand] A non-player joined the server... what would do that?!");
		}
		@SuppressWarnings("unchecked")
		List<String> stuff = plugin.getConfig().getList("Commands", null);
		for (String s : stuff) {
		    player.performCommand(s);
		}
		}
	}

I have no idea why it's doing that!

 

@Kohle
I think this is the problem...

Code:java

this.getConfig().set("Commands", Arrays.asList(list));

Should be...

Code:java

this.getConfig().addDefault("Commands", Arrays.asList(list));

Because when you copyDefaults() you're copying nothing atm

 

What a fail... thanks! (I can't believe that got past me .__.)

 

Happy to help

 

Its always the stupid errors that you cant ever find.... like forgetting a bracket or something

 

Exactly!

 

What I'm trying to do is make a config file to change the kick message when non-ops are kicked.
How will I do this?

 

I'm a noob @ this, and my mind is getting blown.
How do I use the getConfig() method if my class does not extend JavaPlugin?

 

Declare

Code:java

public myPlugin plugin

And get the config with

Code:java

plugin.getConfig()

 

Config noob here :/

Code:

08:10:22 [SEVERE] Could not load 'plugins\EVmin.jar' in folder 'plugins':
java.lang.ExceptionInInitializerError
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Unknown Source)
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.j
ava:170)
        at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.
java:215)
        at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager
.java:136)
        at org.bukkit.craftbukkit.CraftServer.loadPlugins(CraftServer.java:151)
        at org.bukkit.craftbukkit.CraftServer.<init>(CraftServer.java:127)
        at net.minecraft.server.ServerConfigurationManager.<init>(ServerConfigur
ationManager.java:52)
        at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:145)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:393)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:457)
Caused by: java.lang.NullPointerException
        at admin.command.<clinit>(command.java:30)
        ... 11 more

public static List NoFake = config.getList("NoFake");
public static List NoKick = config.getList("NoKick");

 

Excuse me for being stupid but:
How do I get the field itself NOT the value?

EXAMPLE:
Group:
Crafter: 3
Renovator: 4

Is there a way I can get all the fields in 'Group'? then put them into an arraylist

 

config.getConfigurationSection("Group").getKeys(true);
i think, xD

 

Yep that did it!