clean up and close classloader while unload plugin...

Signed-off-by: 502647092 <jtb1@163.com>

src/main/java/cn/citycraft/Yum/Yum.java

@@ -19,8 +19,8 @@ import cn.citycraft.Yum.manager.YumManager;
  * @author 蒋天蓓 2015年8月21日下午5:14:39
  */
 public class Yum extends JavaPlugin {
-	public YumManager yumgr;
 	public FileConfig config;
+	public YumManager yumgr;
 
 	@Override
 	public void onDisable() {
@@ -30,16 +30,16 @@ public class Yum extends JavaPlugin {
 
 	@Override
 	public void onEnable() {
-		HandlerCommand cmdhandler = new HandlerCommand(this);
+		final HandlerCommand cmdhandler = new HandlerCommand(this);
 		this.getCommand("yum").setExecutor(cmdhandler);
 		this.getCommand("yum").setTabCompleter(cmdhandler);
 		yumgr = new YumManager(this);
 		YumManager.repo.jsonToCache(config);
 		new VersionChecker(this);
 		try {
-			Metrics metrics = new Metrics(this);
+			final Metrics metrics = new Metrics(this);
 			metrics.start();
-		} catch (IOException e) {
+		} catch (final IOException e) {
 		}
 	}
 

src/main/java/cn/citycraft/Yum/api/YumApi.java

@@ -3,7 +3,6 @@
  */
 package cn.citycraft.Yum.api;
 
-
 /**
  * Yum仓库插件API
  *

src/main/java/cn/citycraft/Yum/commands/BaseCommand.java

@@ -17,19 +17,19 @@ import org.bukkit.command.CommandSender;
  *         2015年8月12日下午12:49:34
  */
 public abstract class BaseCommand {
-	private String name;
-	private String permission;
-	private String[] aliases;
-	private String description;
+	private final String[] aliases;
+	private final String description;
 	private int minimumArguments = 0;
-	private String possibleArguments = "";
+	private final String name;
 	private boolean onlyPlayerExecutable = false;
+	private String permission;
+	private String possibleArguments = "";
 
-	public BaseCommand(String name, String description) {
+	public BaseCommand(final String name, final String description) {
 		this(name, description, new String[0]);
 	}
 
-	public BaseCommand(String name, String description, String... aliases) {
+	public BaseCommand(final String name, final String description, final String... aliases) {
 		this.name = name;
 		this.description = description;
 		this.aliases = aliases;
@@ -51,11 +51,11 @@ public abstract class BaseCommand {
 
 	/**
 	 * 获得当前命令的别名
-	 * 
+	 *
 	 * @return 当前命令的别名
 	 */
 	public List<String> getCommandList() {
-		List<String> cmds = new ArrayList<String>();
+		final List<String> cmds = new ArrayList<String>();
 		cmds.add(name);
 		cmds.addAll(Arrays.asList(aliases));
 		return cmds;
@@ -113,9 +113,10 @@ public abstract class BaseCommand {
 	 *            - 命令发送者
 	 * @return 是否有权限执行命令
 	 */
-	public final boolean hasPermission(CommandSender sender) {
-		if (permission == null)
+	public final boolean hasPermission(final CommandSender sender) {
+		if (permission == null) {
 			return true;
+		}
 		return sender.hasPermission(permission);
 	}
 
@@ -135,13 +136,17 @@ public abstract class BaseCommand {
 	 *            - 命令
 	 * @return 是否匹配
 	 */
-	public final boolean isValidTrigger(String name) {
-		if (this.name.equalsIgnoreCase(name))
+	public final boolean isValidTrigger(final String name) {
+		if (this.name.equalsIgnoreCase(name)) {
 			return true;
-		if (aliases != null)
-			for (String alias : aliases)
-				if (alias.equalsIgnoreCase(name))
+		}
+		if (aliases != null) {
+			for (final String alias : aliases) {
+				if (alias.equalsIgnoreCase(name)) {
 					return true;
+				}
+			}
+		}
 		return false;
 	}
 
@@ -151,7 +156,7 @@ public abstract class BaseCommand {
 	 * @param minimumArguments
 	 *            - 最小参数个数
 	 */
-	public void setMinimumArguments(int minimumArguments) {
+	public void setMinimumArguments(final int minimumArguments) {
 		this.minimumArguments = minimumArguments;
 	}
 
@@ -161,7 +166,7 @@ public abstract class BaseCommand {
 	 * @param onlyPlayerExecutable
 	 *            - 是否只允许玩家执行
 	 */
-	public void setOnlyPlayerExecutable(boolean onlyPlayerExecutable) {
+	public void setOnlyPlayerExecutable(final boolean onlyPlayerExecutable) {
 		this.onlyPlayerExecutable = onlyPlayerExecutable;
 	}
 
@@ -171,7 +176,7 @@ public abstract class BaseCommand {
 	 * @param permission
 	 *            - 命令权限
 	 */
-	public void setPermission(String permission) {
+	public void setPermission(final String permission) {
 		this.permission = permission;
 	}
 
@@ -181,7 +186,7 @@ public abstract class BaseCommand {
 	 * @param possibleArguments
 	 *            - 可能的命令参数
 	 */
-	public void setPossibleArguments(String possibleArguments) {
+	public void setPossibleArguments(final String possibleArguments) {
 		this.possibleArguments = possibleArguments;
 	}
 

src/main/java/cn/citycraft/Yum/commands/CommandDelete.java

@@ -22,7 +22,7 @@ public class CommandDelete extends BaseCommand {
 	/**
 	 * @param name
 	 */
-	public CommandDelete(Yum main) {
+	public CommandDelete(final Yum main) {
 		super("delete", "删除插件");
 		this.main = main;
 		setMinimumArguments(1);
@@ -30,15 +30,17 @@ public class CommandDelete extends BaseCommand {
 	}
 
 	@Override
-	public void execute(CommandSender sender, String label, String[] args) throws CommandException {
-		String pluginname = args[0];
-		Plugin plugin = Bukkit.getServer().getPluginManager().getPlugin(pluginname);
-		if (plugin != null)
-			if (YumManager.plugman.deletePlugin(sender, plugin))
+	public void execute(final CommandSender sender, final String label, final String[] args) throws CommandException {
+		final String pluginname = args[0];
+		final Plugin plugin = Bukkit.getServer().getPluginManager().getPlugin(pluginname);
+		if (plugin != null) {
+			if (YumManager.plugman.deletePlugin(sender, plugin)) {
 				sender.sendMessage("§c删除: §a插件 " + pluginname + " 已从服务器卸载并删除!");
-			else
+			} else {
 				sender.sendMessage("§c删除: §c插件 " + pluginname + " 卸载或删除时发生错误 删除失败!");
-		else
+			}
+		} else {
 			sender.sendMessage("§c插件 " + pluginname + " 不存在或已卸载!");
+		}
 	};
 }

src/main/java/cn/citycraft/Yum/commands/CommandInfo.java

@@ -24,20 +24,21 @@ public class CommandInfo extends BaseCommand {
 	/**
 	 * @param name
 	 */
-	public CommandInfo(Yum main) {
+	public CommandInfo(final Yum main) {
 		super("info", "查看插件详情");
 		this.main = main;
 		setPossibleArguments("<插件名称>");
 	}
 
 	@Override
-	public void execute(CommandSender sender, String label, String[] args) throws CommandException {
-		if (args.length == 0)
+	public void execute(final CommandSender sender, final String label, final String[] args) throws CommandException {
+		if (args.length == 0) {
 			return;
-		String pluginname = args[0];
-		Plugin plugin = main.getServer().getPluginManager().getPlugin(pluginname);
+		}
+		final String pluginname = args[0];
+		final Plugin plugin = main.getServer().getPluginManager().getPlugin(pluginname);
 		if (plugin != null) {
-			PluginDescriptionFile desc = plugin.getDescription();
+			final PluginDescriptionFile desc = plugin.getDescription();
 			sender.sendMessage("§6插件名称: §3" + plugin.getName());
 			sender.sendMessage("§6插件版本: §3" + desc.getVersion());
 			sender.sendMessage("§6插件作者: §3" + StringUtils.join(desc.getAuthors(), " "));
@@ -47,7 +48,8 @@ public class CommandInfo extends BaseCommand {
 			sender.sendMessage("§6插件软依赖: §3" + (desc.getSoftDepend().size() == 0 ? "无" : ""));
 			StringUtil.sendStringArray(sender, desc.getSoftDepend());
 			sender.sendMessage("§6插件物理路径: §3" + YumManager.plugman.getPluginFile(plugin).getAbsolutePath());
-		} else
+		} else {
 			sender.sendMessage("§4错误: §c插件 " + pluginname + " 不存在或已卸载!");
+		}
 	};
 }

src/main/java/cn/citycraft/Yum/commands/CommandInstall.java

@@ -22,7 +22,7 @@ public class CommandInstall extends BaseCommand {
 	/**
 	 * @param name
 	 */
-	public CommandInstall(Yum main) {
+	public CommandInstall(final Yum main) {
 		super("install", "安装插件");
 		this.main = main;
 		setMinimumArguments(1);
@@ -30,18 +30,20 @@ public class CommandInstall extends BaseCommand {
 	}
 
 	@Override
-	public void execute(final CommandSender sender, String label, final String[] args) throws CommandException {
+	public void execute(final CommandSender sender, final String label, final String[] args) throws CommandException {
 		final String pluginname = args[0];
-		Plugin plugin = Bukkit.getServer().getPluginManager().getPlugin(pluginname);
-		if (plugin == null)
+		final Plugin plugin = Bukkit.getServer().getPluginManager().getPlugin(pluginname);
+		if (plugin == null) {
 			Bukkit.getScheduler().runTaskAsynchronously(main, () -> {
-				if (args.length < 2)
+				if (args.length < 2) {
 					YumManager.install(sender, pluginname);
-				else
+				} else {
 					YumManager.install(sender, pluginname, args[1]);
+				}
 			});
-		else
+		} else {
 			sender.sendMessage("§c插件已安装在服务器 需要更新请使用yum update " + pluginname + "!");
+		}
 
 	};
 }

src/main/java/cn/citycraft/Yum/commands/CommandList.java

@@ -22,15 +22,16 @@ public class CommandList extends BaseCommand {
 	/**
 	 * @param name
 	 */
-	public CommandList(Yum main) {
+	public CommandList(final Yum main) {
 		super("list", "列出已安装插件列表");
 		this.main = main;
 	}
 
 	@Override
-	public void execute(CommandSender sender, String label, String[] args) throws CommandException {
+	public void execute(final CommandSender sender, final String label, final String[] args) throws CommandException {
 		sender.sendMessage("§6[Yum仓库]§3服务器已安装插件: ");
-		for (Plugin plugin : Bukkit.getPluginManager().getPlugins())
+		for (final Plugin plugin : Bukkit.getPluginManager().getPlugins()) {
 			sender.sendMessage("§6 - " + YumManager.plugman.getFormattedName(plugin, true));
+		}
 	};
 }

src/main/java/cn/citycraft/Yum/commands/CommandLoad.java

@@ -22,7 +22,7 @@ public class CommandLoad extends BaseCommand {
 	/**
 	 * @param name
 	 */
-	public CommandLoad(Yum main) {
+	public CommandLoad(final Yum main) {
 		super("load", "载入插件");
 		this.main = main;
 		setMinimumArguments(1);
@@ -30,12 +30,13 @@ public class CommandLoad extends BaseCommand {
 	}
 
 	@Override
-	public void execute(CommandSender sender, String label, String[] args) throws CommandException {
-		String pluginname = args[0];
-		Plugin plugin = Bukkit.getServer().getPluginManager().getPlugin(pluginname);
-		if (plugin == null)
+	public void execute(final CommandSender sender, final String label, final String[] args) throws CommandException {
+		final String pluginname = args[0];
+		final Plugin plugin = Bukkit.getServer().getPluginManager().getPlugin(pluginname);
+		if (plugin == null) {
 			YumManager.plugman.load(sender, pluginname);
-		else
+		} else {
 			sender.sendMessage("§c错误: 插件 " + pluginname + " 已加载到服务器!");
+		}
 	};
 }

src/main/java/cn/citycraft/Yum/commands/CommandReload.java

@@ -22,7 +22,7 @@ public class CommandReload extends BaseCommand {
 	/**
 	 * @param name
 	 */
-	public CommandReload(Yum main) {
+	public CommandReload(final Yum main) {
 		super("reload", "重载插件");
 		this.main = main;
 		setMinimumArguments(1);
@@ -30,16 +30,17 @@ public class CommandReload extends BaseCommand {
 	}
 
 	@Override
-	public void execute(CommandSender sender, String label, String[] args) throws CommandException {
-		String pluginname = args[0];
+	public void execute(final CommandSender sender, final String label, final String[] args) throws CommandException {
+		final String pluginname = args[0];
 		if (pluginname.equalsIgnoreCase("all") || pluginname.equalsIgnoreCase("*")) {
 			YumManager.plugman.reloadAll(sender);
 			return;
 		}
-		Plugin plugin = Bukkit.getServer().getPluginManager().getPlugin(pluginname);
-		if (plugin != null)
+		final Plugin plugin = Bukkit.getServer().getPluginManager().getPlugin(pluginname);
+		if (plugin != null) {
 			YumManager.plugman.reload(sender, plugin);
-		else
+		} else {
 			sender.sendMessage("§c插件 " + pluginname + " 不存在或已卸载!");
+		}
 	};
 }

src/main/java/cn/citycraft/Yum/commands/CommandRepo.java

@@ -21,7 +21,7 @@ public class CommandRepo extends BaseCommand {
 	/**
 	 * @param name
 	 */
-	public CommandRepo(Yum main) {
+	public CommandRepo(final Yum main) {
 		super("repo", "插件源命令");
 		this.main = main;
 		setMinimumArguments(1);
@@ -29,17 +29,19 @@ public class CommandRepo extends BaseCommand {
 	}
 
 	@Override
-	public void execute(CommandSender sender, String label, String[] args) throws CommandException {
-		String cmd = args[0];
+	public void execute(final CommandSender sender, final String label, final String[] args) throws CommandException {
+		final String cmd = args[0];
 		switch (cmd) {
 		case "add":
 			if (args.length == 2) {
-				if (YumManager.repo.addRepositories(sender, args[1]))
+				if (YumManager.repo.addRepositories(sender, args[1])) {
 					sender.sendMessage("§6仓库: §a插件信息已缓存!");
-				else
+				} else {
 					sender.sendMessage("§6仓库: §c源地址未找到仓库信息或无法访问!");
-			} else
+				}
+			} else {
 				sender.sendMessage("§6仓库: §c请输入源地址!");
+			}
 			break;
 		case "list":
 			sender.sendMessage("§6仓库: §b缓存的插件信息如下 ");

src/main/java/cn/citycraft/Yum/commands/CommandUnload.java

@@ -22,7 +22,7 @@ public class CommandUnload extends BaseCommand {
 	/**
 	 * @param name
 	 */
-	public CommandUnload(Yum main) {
+	public CommandUnload(final Yum main) {
 		super("unload", "卸载插件");
 		this.main = main;
 		setMinimumArguments(1);
@@ -30,12 +30,13 @@ public class CommandUnload extends BaseCommand {
 	}
 
 	@Override
-	public void execute(CommandSender sender, String label, String[] args) throws CommandException {
-		String pluginname = args[0];
-		Plugin plugin = Bukkit.getServer().getPluginManager().getPlugin(pluginname);
-		if (plugin != null)
+	public void execute(final CommandSender sender, final String label, final String[] args) throws CommandException {
+		final String pluginname = args[0];
+		final Plugin plugin = Bukkit.getServer().getPluginManager().getPlugin(pluginname);
+		if (plugin != null) {
 			YumManager.plugman.unload(sender, plugin);
-		else
+		} else {
 			sender.sendMessage("§c插件 " + pluginname + " 不存在或已卸载!");
+		}
 	};
 }

src/main/java/cn/citycraft/Yum/commands/CommandUpdate.java

@@ -20,7 +20,7 @@ public class CommandUpdate extends BaseCommand {
 	/**
 	 * @param name
 	 */
-	public CommandUpdate(Yum main) {
+	public CommandUpdate(final Yum main) {
 		super("update", "更新插件");
 		this.main = main;
 		setMinimumArguments(1);
@@ -28,18 +28,20 @@ public class CommandUpdate extends BaseCommand {
 	}
 
 	@Override
-	public void execute(final CommandSender sender, String label, final String[] args) throws CommandException {
+	public void execute(final CommandSender sender, final String label, final String[] args) throws CommandException {
 		final String pluginname = args[0];
 		final Plugin plugin = Bukkit.getServer().getPluginManager().getPlugin(pluginname);
 		sender.sendMessage("§a开始更新插件: " + pluginname);
-		if (plugin != null)
+		if (plugin != null) {
 			Bukkit.getScheduler().runTaskAsynchronously(main, () -> {
-				if (args.length < 2)
+				if (args.length < 2) {
 					YumManager.update(sender, plugin);
-				else
+				} else {
 					YumManager.update(sender, plugin, args[1]);
+				}
 			});
-		else
+		} else {
 			sender.sendMessage("§c插件未安装或已卸载 需要安装请使用yum install " + pluginname + "!");
+		}
 	};
 }

src/main/java/cn/citycraft/Yum/commands/CommandUpgrade.java

@@ -20,7 +20,7 @@ public class CommandUpgrade extends BaseCommand {
 	/**
 	 * @param name
 	 */
-	public CommandUpgrade(Yum main) {
+	public CommandUpgrade(final Yum main) {
 		super("upgrade", "升级插件");
 		this.main = main;
 		setMinimumArguments(1);
@@ -28,18 +28,19 @@ public class CommandUpgrade extends BaseCommand {
 	}
 
 	@Override
-	public void execute(final CommandSender sender, String label, final String[] args) throws CommandException {
+	public void execute(final CommandSender sender, final String label, final String[] args) throws CommandException {
 		Bukkit.getScheduler().runTaskAsynchronously(main, () -> {
-			if (args.length == 0)
+			if (args.length == 0) {
 				YumManager.plugman.upgrade(sender);
-			else {
-				String pluginname = args[0];
-				Plugin plugin = Bukkit.getServer().getPluginManager().getPlugin(pluginname);
+			} else {
+				final String pluginname = args[0];
+				final Plugin plugin = Bukkit.getServer().getPluginManager().getPlugin(pluginname);
 				sender.sendMessage("§a开始升级插件: " + pluginname);
-				if (plugin != null)
+				if (plugin != null) {
 					YumManager.plugman.upgrade(sender, plugin);
-				else
+				} else {
 					sender.sendMessage("§c插件未安装或已卸载 需要安装请使用yum install " + pluginname + "!");
+				}
 			}
 		});
 	};

src/main/java/cn/citycraft/Yum/commands/HandlerCommand.java

@@ -25,19 +25,19 @@ import cn.citycraft.Yum.manager.YumManager;
  * @author 蒋天蓓 2015年8月22日上午8:29:44
  */
 public class HandlerCommand implements CommandExecutor, TabCompleter {
-	/**
-	 * 已注册命令列表(包括别名)
-	 */
-	List<String> RegisterCommandList = new ArrayList<String>();
-
 	/**
 	 * 命令监听类列表
 	 */
-	private List<BaseCommand> commandlist = new ArrayList<BaseCommand>();;
+	private final List<BaseCommand> commandlist = new ArrayList<BaseCommand>();
+
 	/**
 	 * 插件主类
 	 */
-	Yum main;
+	Yum main;;
+	/**
+	 * 已注册命令列表(包括别名)
+	 */
+	List<String> RegisterCommandList = new ArrayList<String>();
 
 	/**
 	 * 注册子命令
@@ -45,7 +45,7 @@ public class HandlerCommand implements CommandExecutor, TabCompleter {
 	 * @param yum
 	 *            - 插件主类
 	 */
-	public HandlerCommand(Yum yum) {
+	public HandlerCommand(final Yum yum) {
 		this.main = yum;
 		registerCommand(new CommandList(yum));
 		registerCommand(new CommandInstall(yum));
@@ -70,8 +70,8 @@ public class HandlerCommand implements CommandExecutor, TabCompleter {
 	 *            - 数组开始位置
 	 * @return 转移后的数组字符串
 	 */
-	public static String[] moveStrings(String[] args, int start) {
-		String[] ret = new String[args.length - start];
+	public static String[] moveStrings(final String[] args, final int start) {
+		final String[] ret = new String[args.length - start];
 		System.arraycopy(args, start, ret, 0, ret.length);
 		return ret;
 	}
@@ -82,25 +82,28 @@ public class HandlerCommand implements CommandExecutor, TabCompleter {
 	 * @return - 返回已注册的命令List
 	 */
 	public List<String> getRegisterCommands() {
-		List<String> cmds = new ArrayList<String>();
-		for (BaseCommand command : commandlist)
+		final List<String> cmds = new ArrayList<String>();
+		for (final BaseCommand command : commandlist) {
 			cmds.addAll(command.getCommandList());
+		}
 		return cmds;
 	}
 
 	@Override
-	public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
-		if (args.length == 0)
-			return true;
-		String subcmd = args[0];
-		if (subcmd.equalsIgnoreCase("help")) {
-			sender.sendMessage("§6=========YUM插件帮助列表=========");
-			for (BaseCommand command : commandlist)
-				sender.sendMessage(String.format("§6/yum §a%1$s %2$s §6- §b%3$s", command.getName(), command.getPossibleArguments(), command.getDescription()));
+	public boolean onCommand(final CommandSender sender, final Command cmd, final String label, final String[] args) {
+		if (args.length == 0) {
 			return true;
 		}
-		String[] subargs = moveStrings(args, 1);
-		for (BaseCommand command : commandlist)
+		final String subcmd = args[0];
+		if (subcmd.equalsIgnoreCase("help")) {
+			sender.sendMessage("§6=========YUM插件帮助列表=========");
+			for (final BaseCommand command : commandlist) {
+				sender.sendMessage(String.format("§6/yum §a%1$s %2$s §6- §b%3$s", command.getName(), command.getPossibleArguments(), command.getDescription()));
+			}
+			return true;
+		}
+		final String[] subargs = moveStrings(args, 1);
+		for (final BaseCommand command : commandlist) {
 			if (command.isValidTrigger(subcmd)) {
 				if (!command.hasPermission(sender)) {
 					sender.sendMessage("§c你没有此命令的权限!");
@@ -110,40 +113,40 @@ public class HandlerCommand implements CommandExecutor, TabCompleter {
 					sender.sendMessage("§c控制台无法使用此命令!");
 					return true;
 				}
-				if (subargs.length >= command.getMinimumArguments())
+				if (subargs.length >= command.getMinimumArguments()) {
 					try {
 						command.execute(sender, subcmd, subargs);
 						return true;
-					} catch (CommandException e) {
+					} catch (final CommandException e) {
 						sender.sendMessage(e.getMessage());
 					}
-				else
+				} else {
 					sender.sendMessage("§c错误的参数 §e使用方法 /yum " + command.getName() + command.getPossibleArguments());
+				}
 			}
+		}
 		return false;
 	}
 
 	@Override
-	public List<String> onTabComplete(CommandSender sender, Command command, String label, String[] args) {
+	public List<String> onTabComplete(final CommandSender sender, final Command command, final String label, final String[] args) {
 		if (sender.isOp() || sender.hasPermission("yum.admin") || sender.hasPermission("yum." + args[0])) {
-			List<String> completions = new ArrayList<>();
+			final List<String> completions = new ArrayList<>();
 			if (args.length == 1) {
-				String partialCommand = args[0];
-				List<String> commands = RegisterCommandList;
+				final String partialCommand = args[0];
+				final List<String> commands = RegisterCommandList;
 				StringUtil.copyPartialMatches(partialCommand, commands, completions);
 			}
 			if (args.length == 2) {
-				String partialPlugin = args[1];
+				final String partialPlugin = args[1];
 				List<String> plugins = null;
-				if (args[0].equalsIgnoreCase("install"))
+				if (args[0].equalsIgnoreCase("install")) {
 					plugins = YumManager.repo.getAllPluginName();
-				else if (args[0].equalsIgnoreCase("repo"))
-					plugins = Arrays.asList(new String[] {	"add",
-															"list",
-															"clean",
-															"update" });
-				else
+				} else if (args[0].equalsIgnoreCase("repo")) {
+					plugins = Arrays.asList(new String[] { "add", "list", "clean", "update" });
+				} else {
 					plugins = YumManager.plugman.getPluginNames(false);
+				}
 				StringUtil.copyPartialMatches(partialPlugin, plugins, completions);
 			}
 			Collections.sort(completions);
@@ -158,7 +161,7 @@ public class HandlerCommand implements CommandExecutor, TabCompleter {
 	 * @param command
 	 *            - 被注册的命令类
 	 */
-	public void registerCommand(BaseCommand command) {
+	public void registerCommand(final BaseCommand command) {
 		commandlist.add(command);
 	}
 

src/main/java/cn/citycraft/Yum/manager/DownloadManager.java

@@ -19,7 +19,7 @@ import org.bukkit.plugin.Plugin;
 public class DownloadManager {
 	Plugin plugin;
 
-	public DownloadManager(Plugin main) {
+	public DownloadManager(final Plugin main) {
 		this.plugin = main;
 	}
 
@@ -30,8 +30,8 @@ public class DownloadManager {
 	 *            - 地址
 	 * @return 文件名称
 	 */
-	public String getFileName(String url) {
-		int end = url.lastIndexOf('/');
+	public String getFileName(final String url) {
+		final int end = url.lastIndexOf('/');
 		return url.substring(end + 1);
 	}
 
@@ -42,22 +42,10 @@ public class DownloadManager {
 	 *            - 地址
 	 * @return 文件名称
 	 */
-	public String getFileName(URL url) {
+	public String getFileName(final URL url) {
 		return getFileName(url.getFile());
 	}
 
-	private String getPer(int per) {
-		StringBuilder sb = new StringBuilder();
-		for (int i = 0; i < 11; i++)
-			if (per > i)
-				sb.append("==");
-			else if (per == i)
-				sb.append("> ");
-			else
-				sb.append("  ");
-		return sb.toString();
-	}
-
 	/**
 	 * 从网络下载文件
 	 *
@@ -67,7 +55,7 @@ public class DownloadManager {
 	 *            - 下载地址
 	 * @return 是否成功
 	 */
-	public boolean run(CommandSender sender, String urlstring) {
+	public boolean run(final CommandSender sender, final String urlstring) {
 		return run(sender, urlstring, new File("plugins", getFileName(urlstring)));
 	}
 
@@ -82,11 +70,11 @@ public class DownloadManager {
 	 *            - 保存文件
 	 * @return 是否成功
 	 */
-	public boolean run(CommandSender sender, String urlstring, File file) {
+	public boolean run(final CommandSender sender, final String urlstring, final File file) {
 		try {
-			URL url = new URL(urlstring);
+			final URL url = new URL(urlstring);
 			return run(sender, url, file);
-		} catch (MalformedURLException e) {
+		} catch (final MalformedURLException e) {
 			sender.sendMessage("§4错误: §c无法识别的URL地址...");
 			sender.sendMessage("§4地址: §c" + urlstring);
 			return false;
@@ -104,15 +92,16 @@ public class DownloadManager {
 	 *            - 保存文件
 	 * @return 是否成功
 	 */
-	public boolean run(CommandSender sender, URL url, File file) {
+	public boolean run(CommandSender sender, final URL url, final File file) {
 		BufferedInputStream in = null;
 		FileOutputStream fout = null;
-		if (sender == null)
+		if (sender == null) {
 			sender = Bukkit.getConsoleSender();
+		}
 		try {
 			sender.sendMessage("§6开始下载: §3" + getFileName(url));
 			sender.sendMessage("§6下载地址: §3" + url.toString());
-			int fileLength = url.openConnection().getContentLength();
+			final int fileLength = url.openConnection().getContentLength();
 			if (fileLength < 0) {
 				sender.sendMessage("§6下载: §c文件 " + file.getName() + " 获取长度错误(可能是网络问题)!");
 				sender.sendMessage("§6文件: §c " + file.getName() + " 下载失败!");
@@ -124,38 +113,42 @@ public class DownloadManager {
 				file.getParentFile().mkdirs();
 				sender.sendMessage("§6创建新目录: §d" + file.getParentFile().getAbsolutePath());
 			}
-			if (file.exists())
+			if (file.exists()) {
 				file.delete();
+			}
 			file.createNewFile();
 			sender.sendMessage("§6创建新文件: §d" + file.getAbsolutePath());
 			fout = new FileOutputStream(file);
-			byte[] data = new byte[1024];
+			final byte[] data = new byte[1024];
 			long downloaded = 0L;
 			int count;
 			long time = System.currentTimeMillis();
 			while ((count = in.read(data)) != -1) {
 				downloaded += count;
 				fout.write(data, 0, count);
-				int percent = (int) (downloaded * 100L / fileLength);
-				if (percent % 10 == 0)
+				final int percent = (int) (downloaded * 100L / fileLength);
+				if (percent % 10 == 0) {
 					if (fileLength < 102400 || System.currentTimeMillis() - time > 1000) {
 						sender.sendMessage(String.format("§6已下载: §a" + getPer(percent / 10) + " %s%%", percent));
 						time = System.currentTimeMillis();
 					}
+				}
 			}
 			sender.sendMessage("§6文件: §a " + file.getName() + " 下载完成!");
 			return true;
-		} catch (Exception ex) {
+		} catch (final Exception ex) {
 			sender.sendMessage("§6异常: §c" + ex.getMessage());
 			sender.sendMessage("§6文件: §c" + file.getName() + " 下载失败!");
 			return false;
 		} finally {
 			try {
-				if (in != null)
+				if (in != null) {
 					in.close();
-				if (fout != null)
+				}
+				if (fout != null) {
 					fout.close();
-			} catch (Exception ex) {
+				}
+			} catch (final Exception ex) {
 			}
 		}
 	}
@@ -167,7 +160,7 @@ public class DownloadManager {
 	 *            - 下载地址
 	 * @return 是否成功
 	 */
-	public boolean run(String urlstring) {
+	public boolean run(final String urlstring) {
 		return run(null, urlstring);
 	}
 
@@ -180,7 +173,7 @@ public class DownloadManager {
 	 *            - 保存文件
 	 * @return 是否成功
 	 */
-	public boolean run(String urlstring, File file) {
+	public boolean run(final String urlstring, final File file) {
 		return run(null, urlstring, file);
 	}
 
@@ -193,8 +186,22 @@ public class DownloadManager {
 	 *            - 保存文件
 	 * @return 是否成功
 	 */
-	public boolean run(URL url, File file) {
+	public boolean run(final URL url, final File file) {
 		return run(null, url, file);
 	}
 
+	private String getPer(final int per) {
+		final StringBuilder sb = new StringBuilder();
+		for (int i = 0; i < 11; i++) {
+			if (per > i) {
+				sb.append("==");
+			} else if (per == i) {
+				sb.append("> ");
+			} else {
+				sb.append("  ");
+			}
+		}
+		return sb.toString();
+	}
+
 }

src/main/java/cn/citycraft/Yum/manager/PluginInfo.java

@@ -7,9 +7,9 @@ import cn.citycraft.Yum.manager.Repositories.TagInfo;
 
 public class PluginInfo {
 	public Plugin plugin;
-	public String url;
 	public String repo;
 	public List<TagInfo> tags;
+	public String url;
 
 	public String getFileName() {
 		return String.format("%1$s-%2$s.jar", plugin.artifactId, plugin.version);
@@ -19,14 +19,16 @@ public class PluginInfo {
 		return getMavenUrl(null);
 	}
 
-	public String getMavenUrl(String version) {
+	public String getMavenUrl(final String version) {
 		String ver = version;
-		if (ver == null && tags != null)
-			for (TagInfo tagInfo : tags)
+		if (ver == null && tags != null) {
+			for (final TagInfo tagInfo : tags) {
 				if (tagInfo.tag.equalsIgnoreCase("1.7.10")) {
 					ver = tagInfo.version;
 					break;
 				}
+			}
+		}
 		return String.format(url + (url.endsWith("/") ? "" : "/") + "%1$s/%2$s/%3$s/%2$s-%3$s.jar", plugin.groupId.replace(".", "/"), plugin.artifactId, ver == null ? plugin.version : ver);
 	}
 }

src/main/java/cn/citycraft/Yum/manager/PluginsManager.java

@@ -37,7 +37,7 @@ import cn.citycraft.PluginHelper.utils.StringUtil;
 public class PluginsManager {
 	Plugin main;
 
-	public PluginsManager(Plugin plugin) {
+	public PluginsManager(final Plugin plugin) {
 		this.main = plugin;
 	}
 
@@ -50,7 +50,7 @@ public class PluginsManager {
 	 *            - 插件
 	 * @return 是否成功
 	 */
-	public boolean deletePlugin(CommandSender sender, Plugin plugin) {
+	public boolean deletePlugin(final CommandSender sender, final Plugin plugin) {
 		return unload(sender, plugin) && getPluginFile(plugin).delete();
 	}
 
@@ -61,7 +61,7 @@ public class PluginsManager {
 	 *            - 插件
 	 * @return 是否成功
 	 */
-	public boolean deletePlugin(Plugin plugin) {
+	public boolean deletePlugin(final Plugin plugin) {
 		return deletePlugin(Bukkit.getConsoleSender(), plugin);
 	}
 
@@ -71,18 +71,21 @@ public class PluginsManager {
 	 * @param plugin
 	 *            - 插件
 	 */
-	public void disable(Plugin plugin) {
-		if ((plugin != null) && (plugin.isEnabled()))
+	public void disable(final Plugin plugin) {
+		if ((plugin != null) && (plugin.isEnabled())) {
 			Bukkit.getPluginManager().disablePlugin(plugin);
+		}
 	}
 
 	/**
 	 * 关闭所有插件
 	 */
 	public void disableAll() {
-		for (Plugin plugin : Bukkit.getPluginManager().getPlugins())
-			if (!isIgnored(plugin))
+		for (final Plugin plugin : Bukkit.getPluginManager().getPlugins()) {
+			if (!isIgnored(plugin)) {
 				disable(plugin);
+			}
+		}
 	}
 
 	/**
@@ -91,18 +94,21 @@ public class PluginsManager {
 	 * @param plugin
 	 *            - 插件
 	 */
-	public void enable(Plugin plugin) {
-		if ((plugin != null) && (!plugin.isEnabled()))
+	public void enable(final Plugin plugin) {
+		if ((plugin != null) && (!plugin.isEnabled())) {
 			Bukkit.getPluginManager().enablePlugin(plugin);
+		}
 	}
 
 	/**
 	 * 启用所有插件
 	 */
 	public void enableAll() {
-		for (Plugin plugin : Bukkit.getPluginManager().getPlugins())
-			if (!isIgnored(plugin))
+		for (final Plugin plugin : Bukkit.getPluginManager().getPlugins()) {
+			if (!isIgnored(plugin)) {
 				enable(plugin);
+			}
+		}
 	}
 
 	/**
@@ -112,7 +118,7 @@ public class PluginsManager {
 	 *            - 插件
 	 * @return 格式化的插件名称
 	 */
-	public String getFormattedName(Plugin plugin) {
+	public String getFormattedName(final Plugin plugin) {
 		return getFormattedName(plugin, false);
 	}
 
@@ -125,11 +131,12 @@ public class PluginsManager {
 	 *            - 是否包括版本
 	 * @return 格式化的插件名称
 	 */
-	public String getFormattedName(Plugin plugin, boolean includeVersions) {
-		ChatColor color = plugin.isEnabled() ? ChatColor.GREEN : ChatColor.RED;
+	public String getFormattedName(final Plugin plugin, final boolean includeVersions) {
+		final ChatColor color = plugin.isEnabled() ? ChatColor.GREEN : ChatColor.RED;
 		String pluginName = color + plugin.getName();
-		if (includeVersions)
+		if (includeVersions) {
 			pluginName = pluginName + " (" + plugin.getDescription().getVersion() + ")";
+		}
 		return pluginName;
 	}
 
@@ -140,7 +147,7 @@ public class PluginsManager {
 	 *            - 名称
 	 * @return 插件
 	 */
-	public Plugin getPluginByName(String name) {
+	public Plugin getPluginByName(final String name) {
 		return Bukkit.getPluginManager().getPlugin(name);
 	}
 
@@ -151,7 +158,7 @@ public class PluginsManager {
 	 *            - 名称
 	 * @return 插件
 	 */
-	public Plugin getPluginByName(String[] args, int start) {
+	public Plugin getPluginByName(final String[] args, final int start) {
 		return getPluginByName(StringUtil.consolidateStrings(args, start));
 	}
 
@@ -162,22 +169,23 @@ public class PluginsManager {
 	 *            - 插件
 	 * @return 插件的绝对路径
 	 */
-	public File getPluginFile(Plugin plugin) {
+	public File getPluginFile(final Plugin plugin) {
 		File file = null;
-		ClassLoader cl = plugin.getClass().getClassLoader();
+		final ClassLoader cl = plugin.getClass().getClassLoader();
 		if ((cl instanceof URLClassLoader)) {
 			@SuppressWarnings("resource")
-			URLClassLoader ucl = (URLClassLoader) cl;
-			URL url = ucl.getURLs()[0];
+			final URLClassLoader ucl = (URLClassLoader) cl;
+			final URL url = ucl.getURLs()[0];
 			file = new File(url.getFile());
 		}
 		return file;
 	}
 
-	public List<String> getPluginNames(boolean fullName) {
-		List<String> plugins = new ArrayList<String>();
-		for (Plugin plugin : Bukkit.getPluginManager().getPlugins())
+	public List<String> getPluginNames(final boolean fullName) {
+		final List<String> plugins = new ArrayList<String>();
+		for (final Plugin plugin : Bukkit.getPluginManager().getPlugins()) {
 			plugins.add(fullName ? plugin.getDescription().getFullName() : plugin.getName());
+		}
 		return plugins;
 	}
 
@@ -188,10 +196,11 @@ public class PluginsManager {
 	 *            - 插件名称
 	 * @return 插件版本
 	 */
-	public String getPluginVersion(String name) {
-		Plugin plugin = getPluginByName(name);
-		if ((plugin != null) && (plugin.getDescription() != null))
+	public String getPluginVersion(final String name) {
+		final Plugin plugin = getPluginByName(name);
+		if ((plugin != null) && (plugin.getDescription() != null)) {
 			return plugin.getDescription().getVersion();
+		}
 		return null;
 	}
 
@@ -202,21 +211,23 @@ public class PluginsManager {
 	 *            - 插件
 	 * @return 插件命令
 	 */
-	public String getUsages(Plugin plugin) {
-		List<String> parsedCommands = new ArrayList<String>();
+	public String getUsages(final Plugin plugin) {
+		final List<String> parsedCommands = new ArrayList<String>();
 
-		Map<String, Map<String, Object>> commands = plugin.getDescription().getCommands();
+		final Map<String, Map<String, Object>> commands = plugin.getDescription().getCommands();
 
 		if (commands != null) {
-			Iterator<Entry<String, Map<String, Object>>> commandsIt = commands.entrySet().iterator();
+			final Iterator<Entry<String, Map<String, Object>>> commandsIt = commands.entrySet().iterator();
 			while (commandsIt.hasNext()) {
-				Entry<String, Map<String, Object>> thisEntry = commandsIt.next();
-				if (thisEntry != null)
+				final Entry<String, Map<String, Object>> thisEntry = commandsIt.next();
+				if (thisEntry != null) {
 					parsedCommands.add(thisEntry.getKey());
+				}
 			}
 		}
-		if (parsedCommands.isEmpty())
+		if (parsedCommands.isEmpty()) {
 			return null;
+		}
 		return Joiner.on(", ").join(parsedCommands);
 	}
 
@@ -227,7 +238,7 @@ public class PluginsManager {
 	 *            - 插件
 	 * @return 是否
 	 */
-	public boolean isIgnored(Plugin plugin) {
+	public boolean isIgnored(final Plugin plugin) {
 		return isIgnored(plugin.getName());
 	}
 
@@ -238,10 +249,12 @@ public class PluginsManager {
 	 *            - 插件名称
 	 * @return 是否
 	 */
-	public boolean isIgnored(String plugin) {
-		for (String name : new ArrayList<String>())
-			if (name.equalsIgnoreCase(plugin))
+	public boolean isIgnored(final String plugin) {
+		for (final String name : new ArrayList<String>()) {
+			if (name.equalsIgnoreCase(plugin)) {
 				return true;
+			}
+		}
 		return false;
 	}
 
@@ -254,15 +267,17 @@ public class PluginsManager {
 	 *            - 插件名称
 	 * @return 是否成功
 	 */
-	public boolean load(CommandSender sender, String name) {
+	public boolean load(CommandSender sender, final String name) {
 		Plugin target = null;
 		String filename = null;
-		if (sender == null)
+		if (sender == null) {
 			sender = Bukkit.getConsoleSender();
-		if (!name.endsWith(".jar"))
+		}
+		if (!name.endsWith(".jar")) {
 			filename = name + ".jar";
-		File pluginDir = new File("plugins");
-		File updateDir = new File(pluginDir, "update");
+		}
+		final File pluginDir = new File("plugins");
+		final File updateDir = new File(pluginDir, "update");
 		if (!pluginDir.isDirectory()) {
 			sender.sendMessage("§c插件目录不存在或IO错误!");
 			return false;
@@ -272,16 +287,18 @@ public class PluginsManager {
 
 		if (!pluginFile.isFile() && !new File(updateDir, filename).isFile()) {
 			pluginFile = null;
-			for (File file : pluginDir.listFiles())
-				if (file.getName().endsWith(".jar"))
+			for (final File file : pluginDir.listFiles()) {
+				if (file.getName().endsWith(".jar")) {
 					try {
-						PluginDescriptionFile desc = main.getPluginLoader().getPluginDescription(file);
+						final PluginDescriptionFile desc = main.getPluginLoader().getPluginDescription(file);
 						if (desc.getName().equalsIgnoreCase(name)) {
 							pluginFile = file;
 							break;
 						}
-					} catch (InvalidDescriptionException e) {
+					} catch (final InvalidDescriptionException e) {
 					}
+				}
+			}
 			if (pluginFile == null) {
 				sender.sendMessage("§6载入: §c在插件目录和更新目录均未找到 " + name + " 插件 请确认文件是否存在!");
 				return false;
@@ -290,19 +307,19 @@ public class PluginsManager {
 
 		try {
 			target = Bukkit.getPluginManager().loadPlugin(pluginFile);
-		} catch (InvalidDescriptionException e) {
+		} catch (final InvalidDescriptionException e) {
 			sender.sendMessage("§4异常: §c" + e.getMessage());
 			sender.sendMessage("§c插件: " + name + " 的plugin.yml文件存在错误!");
 			return false;
-		} catch (UnsupportedClassVersionError e) {
+		} catch (final UnsupportedClassVersionError e) {
 			sender.sendMessage("§4异常: §c" + e.getMessage());
 			sender.sendMessage("§c服务器或JAVA的版本低于插件: " + name + " 所需要的版本!!");
 			return false;
-		} catch (InvalidPluginException e) {
+		} catch (final InvalidPluginException e) {
 			sender.sendMessage("§4异常: §c" + e.getMessage());
 			sender.sendMessage("§c文件: " + name + " 不是一个可载入的插件!");
 			return false;
-		} catch (UnknownDependencyException e) {
+		} catch (final UnknownDependencyException e) {
 			sender.sendMessage("§4异常: §c" + e.getMessage());
 			sender.sendMessage("§c插件: " + name + " 缺少部分依赖项目!");
 			return false;
@@ -321,7 +338,7 @@ public class PluginsManager {
 	 *            - 插件名称
 	 * @return 是否成功
 	 */
-	public boolean load(String name) {
+	public boolean load(final String name) {
 		return load(Bukkit.getConsoleSender(), name);
 	}
 
@@ -334,9 +351,10 @@ public class PluginsManager {
 	 *            - 插件
 	 * @return 是否成功
 	 */
-	public boolean reload(CommandSender sender, Plugin plugin) {
-		if (plugin != null)
+	public boolean reload(final CommandSender sender, final Plugin plugin) {
+		if (plugin != null) {
 			return unload(sender, plugin) && load(sender, plugin.getName());
+		}
 		return false;
 	}
 
@@ -349,9 +367,10 @@ public class PluginsManager {
 	 *            - 插件
 	 * @return 是否成功
 	 */
-	public boolean reload(CommandSender sender, String name) {
-		if (name != null)
+	public boolean reload(final CommandSender sender, final String name) {
+		if (name != null) {
 			return unload(sender, name) && load(sender, name);
+		}
 		return false;
 	}
 
@@ -362,7 +381,7 @@ public class PluginsManager {
 	 *            - 插件
 	 * @return 是否成功
 	 */
-	public boolean reload(Plugin plugin) {
+	public boolean reload(final Plugin plugin) {
 		return reload(Bukkit.getConsoleSender(), plugin);
 	}
 
@@ -370,18 +389,22 @@ public class PluginsManager {
 	 * 重载所有插件
 	 */
 	public void reloadAll() {
-		for (Plugin plugin : Bukkit.getPluginManager().getPlugins())
-			if (!isIgnored(plugin))
+		for (final Plugin plugin : Bukkit.getPluginManager().getPlugins()) {
+			if (!isIgnored(plugin)) {
 				reload(plugin);
+			}
+		}
 	}
 
 	/**
 	 * 重载所有插件
 	 */
-	public void reloadAll(CommandSender sender) {
-		for (Plugin plugin : Bukkit.getPluginManager().getPlugins())
-			if (!isIgnored(plugin))
+	public void reloadAll(final CommandSender sender) {
+		for (final Plugin plugin : Bukkit.getPluginManager().getPlugins()) {
+			if (!isIgnored(plugin)) {
 				reload(sender, plugin);
+			}
+		}
 	}
 
 	/**
@@ -393,7 +416,7 @@ public class PluginsManager {
 	 *            - 插件
 	 * @return 是否成功
 	 */
-	public boolean unload(CommandSender sender, Plugin plugin) {
+	public boolean unload(final CommandSender sender, final Plugin plugin) {
 		return unload(sender, plugin.getName());
 	}
 
@@ -407,10 +430,11 @@ public class PluginsManager {
 	 * @return 是否成功
 	 */
 	@SuppressWarnings("unchecked")
-	public boolean unload(CommandSender sender, String name) {
-		if (sender == null)
+	public boolean unload(CommandSender sender, final String name) {
+		if (sender == null) {
 			sender = Bukkit.getConsoleSender();
-		PluginManager pluginManager = Bukkit.getPluginManager();
+		}
+		final PluginManager pluginManager = Bukkit.getPluginManager();
 		SimpleCommandMap commandMap = null;
 		List<Plugin> plugins = null;
 		Map<String, Plugin> lookupNames = null;
@@ -420,26 +444,26 @@ public class PluginsManager {
 			return false;
 		}
 		try {
-			Field pluginsField = pluginManager.getClass().getDeclaredField("plugins");
+			final Field pluginsField = pluginManager.getClass().getDeclaredField("plugins");
 			pluginsField.setAccessible(true);
 			plugins = (List<Plugin>) pluginsField.get(pluginManager);
 
-			Field lookupNamesField = pluginManager.getClass().getDeclaredField("lookupNames");
+			final Field lookupNamesField = pluginManager.getClass().getDeclaredField("lookupNames");
 			lookupNamesField.setAccessible(true);
 			lookupNames = (Map<String, Plugin>) lookupNamesField.get(pluginManager);
 
-			Field commandMapField = pluginManager.getClass().getDeclaredField("commandMap");
+			final Field commandMapField = pluginManager.getClass().getDeclaredField("commandMap");
 			commandMapField.setAccessible(true);
 			commandMap = (SimpleCommandMap) commandMapField.get(pluginManager);
 
-			Field knownCommandsField = SimpleCommandMap.class.getDeclaredField("knownCommands");
+			final Field knownCommandsField = SimpleCommandMap.class.getDeclaredField("knownCommands");
 			knownCommandsField.setAccessible(true);
 			knownCommands = (Map<String, Command>) knownCommandsField.get(commandMap);
-		} catch (Exception e) {
+		} catch (final Exception e) {
 			sender.sendMessage("§4异常: §c" + e.getMessage() + " 插件 " + name + " 卸载失败!");
 			return false;
 		}
-		for (Plugin next : pluginManager.getPlugins())
+		for (final Plugin next : pluginManager.getPlugins()) {
 			if (next.getName().equals(name)) {
 				pluginManager.disablePlugin(next);
 				if ((plugins != null) && (plugins.contains(next))) {
@@ -453,10 +477,10 @@ public class PluginsManager {
 				}
 
 				if (commandMap != null) {
-					for (Iterator<Map.Entry<String, Command>> it = knownCommands.entrySet().iterator(); it.hasNext();) {
-						Map.Entry<String, Command> entry = it.next();
+					for (final Iterator<Map.Entry<String, Command>> it = knownCommands.entrySet().iterator(); it.hasNext();) {
+						final Map.Entry<String, Command> entry = it.next();
 						if ((entry.getValue() instanceof PluginCommand)) {
-							PluginCommand command = (PluginCommand) entry.getValue();
+							final PluginCommand command = (PluginCommand) entry.getValue();
 							if (command.getPlugin() == next) {
 								command.unregister(commandMap);
 								it.remove();
@@ -465,7 +489,14 @@ public class PluginsManager {
 					}
 					sender.sendMessage("§6卸载: §a注销插件 " + name + " 的所有命令!");
 				}
+				final ClassLoader cl = next.getClass().getClassLoader();
+				try {
+					((URLClassLoader) cl).close();
+				} catch (final IOException ex) {
+				}
+				System.gc();
 			}
+		}
 		sender.sendMessage("§6卸载: §a插件 " + name + " 已成功卸载!");
 		return true;
 	}
@@ -477,7 +508,7 @@ public class PluginsManager {
 	 *            - 卸载插件
 	 * @return 是否成功
 	 */
-	public boolean unload(Plugin plugin) {
+	public boolean unload(final Plugin plugin) {
 		return unload(Bukkit.getConsoleSender(), plugin);
 	}
 
@@ -486,7 +517,7 @@ public class PluginsManager {
 	 *
 	 * @return 是否成功
 	 */
-	public boolean upgrade(CommandSender sender) {
+	public boolean upgrade(final CommandSender sender) {
 		sender.sendMessage("§6升级: §a开始升级 服务器更新 目录下的所有插件!");
 		return upgrade(sender, null, null);
 	}
@@ -500,31 +531,33 @@ public class PluginsManager {
 	 *            - 更新目录
 	 * @return 是否成功
 	 */
-	public boolean upgrade(CommandSender sender, File directory, Plugin plugin) {
+	public boolean upgrade(final CommandSender sender, final File directory, final Plugin plugin) {
 		boolean result = false;
-		PluginLoader loader = main.getPluginLoader();
+		final PluginLoader loader = main.getPluginLoader();
 		File updateDirectory;
-		if (directory == null || !directory.isDirectory())
+		if (directory == null || !directory.isDirectory()) {
 			updateDirectory = Bukkit.getServer().getUpdateFolderFile();
-		else
+		} else {
 			updateDirectory = directory;
+		}
 		try {
 			sender.sendMessage("§6升级: §b从 " + updateDirectory.getCanonicalPath() + " 文件夹检索插件插件!");
 		} catch (SecurityException | IOException e1) {
 			sender.sendMessage("§4异常: §c文件夹 " + updateDirectory.getName() + " 权限不足或IO错误!");
 			return false;
 		}
-		for (File file : updateDirectory.listFiles()) {
+		for (final File file : updateDirectory.listFiles()) {
 			PluginDescriptionFile description = null;
 			try {
 				description = loader.getPluginDescription(file);
-				String name = description.getName();
-				if (plugin != null && !name.equals(plugin.getName()))
+				final String name = description.getName();
+				if (plugin != null && !name.equals(plugin.getName())) {
 					continue;
+				}
 				result = true;
 				sender.sendMessage("§6升级: §a开始升级 " + name + " 插件!");
 				reload(sender, name);
-			} catch (InvalidDescriptionException e) {
+			} catch (final InvalidDescriptionException e) {
 				sender.sendMessage("§4异常: §c" + e.getMessage());
 				sender.sendMessage("§4文件: §c" + file.getName() + " 的plugin.yml文件存在错误!");
 			}
@@ -538,7 +571,7 @@ public class PluginsManager {
 	 *
 	 * @return 是否成功
 	 */
-	public boolean upgrade(CommandSender sender, Plugin plugin) {
+	public boolean upgrade(final CommandSender sender, final Plugin plugin) {
 		return upgrade(sender, null, plugin);
 	}
 
@@ -547,7 +580,7 @@ public class PluginsManager {
 	 *
 	 * @return 是否成功
 	 */
-	public boolean upgrade(File directory) {
+	public boolean upgrade(final File directory) {
 		Bukkit.getConsoleSender().sendMessage("§6升级: §a开始升级 " + directory.getName() + " 目录下的所有插件!");
 		return upgrade(Bukkit.getConsoleSender(), directory, null);
 	}

src/main/java/cn/citycraft/Yum/manager/Repositories.java

@@ -15,22 +15,22 @@ import java.util.List;
 public class Repositories {
 	public class PackageInfo {
 		public String name;
-		public String url;
 		public List<Plugin> plugins = new ArrayList<>();
+		public String url;
 	}
 
 	public class Plugin {
-		public String groupId;
 		public String artifactId;
 		public String description;
-		public String version;
+		public String groupId;
 		public List<TagInfo> tags;
+		public String version;
 	}
 
 	public class Repository {
 		public String id;
-		public String url;
 		public String type;
+		public String url;
 	}
 
 	public class TagInfo {

src/main/java/cn/citycraft/Yum/manager/RepositoryManager.java

@@ -32,37 +32,40 @@ import cn.citycraft.Yum.manager.Repositories.Repository;;
  */
 public class RepositoryManager {
 	Gson gson;
-	List<String> repos;
+	org.bukkit.plugin.Plugin main;
 	HashMap<String, PluginInfo> plugins;
 
-	org.bukkit.plugin.Plugin main;
+	List<String> repos;
 
-	public RepositoryManager(org.bukkit.plugin.Plugin plugin) {
+	public RepositoryManager(final org.bukkit.plugin.Plugin plugin) {
 		this.main = plugin;
 		gson = new Gson();
 		plugins = new HashMap<String, PluginInfo>();
 		repos = new ArrayList<String>();
 	}
 
-	public boolean addPackage(CommandSender sender, String urlstring) {
-		String json = getHtml(urlstring);
-		if (json.isEmpty())
+	public boolean addPackage(final CommandSender sender, final String urlstring) {
+		final String json = getHtml(urlstring);
+		if (json.isEmpty()) {
 			return false;
-		PackageInfo pkg = jsonToPackage(json);
-		if (pkg == null)
+		}
+		final PackageInfo pkg = jsonToPackage(json);
+		if (pkg == null) {
 			return false;
+		}
 		updatePackage(sender, pkg);
 		return true;
 	}
 
-	public boolean addRepositories(CommandSender sender, String urlstring) {
-		if (urlstring.isEmpty())
+	public boolean addRepositories(final CommandSender sender, final String urlstring) {
+		if (urlstring.isEmpty()) {
 			return false;
+		}
 		repos.add(urlstring);
 		return updateRepositories(sender, urlstring);
 	}
 
-	public void cacheToJson(FileConfiguration config) {
+	public void cacheToJson(final FileConfiguration config) {
 		config.set("repocache", gson.toJson(repos));
 		config.set("plugincache", gson.toJson(plugins));
 	}
@@ -72,97 +75,106 @@ public class RepositoryManager {
 	}
 
 	public List<PluginInfo> getAllPlugin() {
-		List<PluginInfo> li = new ArrayList<PluginInfo>();
-		for (Entry<String, PluginInfo> plugin : plugins.entrySet())
+		final List<PluginInfo> li = new ArrayList<PluginInfo>();
+		for (final Entry<String, PluginInfo> plugin : plugins.entrySet()) {
 			li.add(plugin.getValue());
+		}
 		return li;
 	}
 
 	public List<String> getAllPluginName() {
-		List<String> li = new ArrayList<String>();
-		for (Entry<String, PluginInfo> plugin : plugins.entrySet())
+		final List<String> li = new ArrayList<String>();
+		for (final Entry<String, PluginInfo> plugin : plugins.entrySet()) {
 			li.add(plugin.getValue().plugin.artifactId);
+		}
 		return li;
 	}
 
 	public List<String> getAllPluginsInfo() {
-		List<String> li = new ArrayList<String>();
-		for (Entry<String, PluginInfo> plugin : plugins.entrySet()) {
-			Plugin pl = plugin.getValue().plugin;
+		final List<String> li = new ArrayList<String>();
+		for (final Entry<String, PluginInfo> plugin : plugins.entrySet()) {
+			final Plugin pl = plugin.getValue().plugin;
 			li.add(String.format("§d%s §a%s(%s) §6- §e%s", plugin.getValue().repo, pl.artifactId, pl.version, pl.description));
 		}
 		return li;
 	}
 
-	public String getHtml(String urlstring) {
+	public String getHtml(final String urlstring) {
 		String html = "";
 		try {
-			URL url = new URL(urlstring);
-			BufferedReader br = new BufferedReader(new InputStreamReader(url.openStream(), Charsets.UTF_8));
+			final URL url = new URL(urlstring);
+			final BufferedReader br = new BufferedReader(new InputStreamReader(url.openStream(), Charsets.UTF_8));
 			String line;
-			while ((line = br.readLine()) != null)
+			while ((line = br.readLine()) != null) {
 				html += line;
+			}
 			return html;
-		} catch (IOException e) {
+		} catch (final IOException e) {
 			return null;
 		}
 	}
 
-	public PluginInfo getPlugin(String name) {
-		for (Entry<String, PluginInfo> plugin : plugins.entrySet())
-			if (plugin.getValue().plugin.artifactId.equalsIgnoreCase(name))
+	public PluginInfo getPlugin(final String name) {
+		for (final Entry<String, PluginInfo> plugin : plugins.entrySet()) {
+			if (plugin.getValue().plugin.artifactId.equalsIgnoreCase(name)) {
 				return plugin.getValue();
+			}
+		}
 		return null;
 	}
 
-	public List<PluginInfo> getPluginInfo(String name) {
-		List<PluginInfo> li = new ArrayList<PluginInfo>();
-		for (Entry<String, PluginInfo> plugin : plugins.entrySet())
-			if (plugin.getValue().plugin.artifactId.equalsIgnoreCase(name))
+	public List<PluginInfo> getPluginInfo(final String name) {
+		final List<PluginInfo> li = new ArrayList<PluginInfo>();
+		for (final Entry<String, PluginInfo> plugin : plugins.entrySet()) {
+			if (plugin.getValue().plugin.artifactId.equalsIgnoreCase(name)) {
 				li.add(plugin.getValue());
+			}
+		}
 		return li;
 	}
 
-	public PluginInfo getPluginInfo(String groupId, String artifactId) {
+	public PluginInfo getPluginInfo(final String groupId, final String artifactId) {
 		return plugins.get(groupId + "." + artifactId);
 	}
 
-	public boolean jsonToCache(FileConfiguration config) {
-		String repocache = config.getString("repocache");
-		String plugincache = config.getString("plugincache");
+	public boolean jsonToCache(final FileConfiguration config) {
+		final String repocache = config.getString("repocache");
+		final String plugincache = config.getString("plugincache");
 		try {
-			if (!repocache.isEmpty())
+			if (!repocache.isEmpty()) {
 				repos = gson.fromJson(repocache, new TypeToken<List<String>>() {
 				}.getType());
-			if (!plugincache.isEmpty())
+			}
+			if (!plugincache.isEmpty()) {
 				plugins = gson.fromJson(plugincache, new TypeToken<HashMap<String, PluginInfo>>() {
 				}.getType());
+			}
 			return true;
-		} catch (JsonSyntaxException e) {
+		} catch (final JsonSyntaxException e) {
 			return false;
 		}
 	}
 
-	public PackageInfo jsonToPackage(String json) {
+	public PackageInfo jsonToPackage(final String json) {
 		try {
 			return gson.fromJson(json, PackageInfo.class);
-		} catch (JsonSyntaxException e) {
+		} catch (final JsonSyntaxException e) {
 			return null;
 		}
 	}
 
-	public List<Repository> jsonToRepositories(String json) {
+	public List<Repository> jsonToRepositories(final String json) {
 		try {
 			return gson.fromJson(json, new TypeToken<List<Repository>>() {
 			}.getType());
-		} catch (JsonSyntaxException e) {
+		} catch (final JsonSyntaxException e) {
 			return new ArrayList<Repository>();
 		}
 	}
 
-	public void updatePackage(CommandSender sender, PackageInfo pkg) {
-		for (Plugin plugin : pkg.plugins) {
-			PluginInfo pi = new PluginInfo();
+	public void updatePackage(final CommandSender sender, final PackageInfo pkg) {
+		for (final Plugin plugin : pkg.plugins) {
+			final PluginInfo pi = new PluginInfo();
 			pi.plugin = plugin;
 			pi.url = pkg.url;
 			pi.repo = pkg.name;
@@ -171,29 +183,36 @@ public class RepositoryManager {
 		sender.sendMessage("§6仓库: §e" + pkg.name + " §a更新成功!");
 	}
 
-	public boolean updateRepositories(CommandSender sender) {
+	public boolean updateRepositories(final CommandSender sender) {
 		plugins.clear();
-		for (String string : repos)
-			if (updateRepositories(sender, string))
+		for (final String string : repos) {
+			if (updateRepositories(sender, string)) {
 				sender.sendMessage("§6源: §e" + string + " §a更新成功!");
-			else
+			} else {
 				sender.sendMessage("§6源: §e" + string + " §c更新失败!");
+			}
+		}
 		return true;
 	}
 
 	public boolean updateRepositories(CommandSender sender, String urlstring) {
-		if (sender == null)
+		if (sender == null) {
 			sender = Bukkit.getConsoleSender();
-		if (!urlstring.endsWith("repo.info"))
+		}
+		if (!urlstring.endsWith("repo.info")) {
 			urlstring = urlstring + "/repo.info";
-		String json = getHtml(urlstring);
-		if (json.isEmpty())
+		}
+		final String json = getHtml(urlstring);
+		if (json.isEmpty()) {
 			return false;
-		List<Repository> lrepo = jsonToRepositories(json);
-		if (lrepo.isEmpty())
+		}
+		final List<Repository> lrepo = jsonToRepositories(json);
+		if (lrepo.isEmpty()) {
 			return false;
-		for (Repository repository : lrepo)
+		}
+		for (final Repository repository : lrepo) {
 			addPackage(sender, repository.url);
+		}
 		return true;
 	}
 }

src/main/java/cn/citycraft/Yum/manager/YumManager.java

@@ -19,38 +19,41 @@ public class YumManager {
 
 	Plugin plugin;
 
-	public YumManager(Plugin plugin) {
+	public YumManager(final Plugin plugin) {
 		this.plugin = plugin;
 		plugman = new PluginsManager(plugin);
 		download = new DownloadManager(plugin);
 		repo = new RepositoryManager(plugin);
 	}
 
-	public static boolean install(CommandSender sender, String pluginname) {
+	public static boolean install(final CommandSender sender, final String pluginname) {
 		return install(sender, pluginname, null);
 	}
 
-	public static boolean install(CommandSender sender, String pluginname, String version) {
-		PluginInfo pi = repo.getPlugin(pluginname);
-		if (pi != null)
-			if (download.run(sender, pi.getMavenUrl(version)))
+	public static boolean install(final CommandSender sender, final String pluginname, final String version) {
+		final PluginInfo pi = repo.getPlugin(pluginname);
+		if (pi != null) {
+			if (download.run(sender, pi.getMavenUrl(version))) {
 				return plugman.load(sender, pluginname);
+			}
+		}
 		return false;
 	}
 
-	public static boolean update(CommandSender sender, Plugin plugin) {
+	public static boolean update(final CommandSender sender, final Plugin plugin) {
 		return update(sender, plugin, null);
 	}
 
-	public static boolean update(CommandSender sender, Plugin plugin, String version) {
-		PluginInfo pi = repo.getPlugin(plugin.getName());
+	public static boolean update(final CommandSender sender, final Plugin plugin, final String version) {
+		final PluginInfo pi = repo.getPlugin(plugin.getName());
 		if (pi != null) {
 			if (download.run(sender, pi.getMavenUrl(version), new File(Bukkit.getUpdateFolderFile(), plugman.getPluginFile(plugin).getName()))) {
 				sender.sendMessage("§6更新: §a已下载插件 " + plugin.getName() + " 到update文件夹 重启后自动更新(或使用upgrade直接升级)!");
 				return true;
 			}
-		} else
+		} else {
 			sender.sendMessage("§6更新: §c仓库缓存中未找到插件 " + plugin.getName());
+		}
 		return false;
 	}
 }