Bukkit（Spigot API）侦听器没有响应？

问题描述

我一直在制作一个bukkit插件，该插件会显示在插件列表中，但是当我执行我想让代码不执行任何操作时。

I have been making a bukkit plugin, which shows up in the plugins list but when I do what I want the code to do nothing happens.

public class MyClass extends JavaPlugin implements Listener {

@EventHandler
public void onInteract(PlayerInteractEvent event) {
  Player player = event.getPlayer();
  if (player.isSneaking()) {
      player.sendMessage("Fire!");
      Arrow arrow = player.launchProjectile(Arrow.class);
      arrow.setShooter(player);
      arrow.setGravity(false);
      arrow.setSilent(true);
      arrow.setBounce(false);
      Block attach = arrow.getAttachedBlock();
      Location attachlocation = attach.getLocation();
      attachlocation.getWorld().createExplosion(attachlocation, 3);
            arrow.setVelocity((player.getEyeLocation().getDirection().multiply(1000)));
      }
   }
}

推荐答案

我看不到您注册您的收听者。 Bukkit需要知道哪些对象是侦听器（您没有这样做），并且需要知道要执行什么方法（带有 @EventHandler 批注）

I can't see you registering your listener. Bukkit needs to know what objects are listeners (you're not doing this) and it needs to know what methods to execute (with the @EventHandler annotation)

您可以使用PluginManager的方法。一个聪明的主意是在您的onEnable方法中执行此操作，以确保在您的插件启动后立即注册您的侦听器。

You can register the listener with PluginManager's registerEvents(Listener listener, Plugin plugin) method. A smart idea is to do this inside your onEnable method, to ensure your listener is registered as soon as your plugin starts.

public class MyClass extends JavaPlugin implements Listener {

    @Override
    public void onEnable() {
        this.getServer().getPluginManager().registerEvents(this, this);
    }

    // rest of your code
}

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