这就是我不断收到错误(这我理解,但不能因为解决IDK的是什么问题)界必须积极
[14:25:50 ERROR]: Could not pass event BlockBreakEvent to SurgeGlowstone v1.0
org.bukkit.event.EventException
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:297) ~[custom.jar:git-PaperSpigot-a925999]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[custom.jar:git-PaperSpigot-a925999]
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:513) [custom.jar:git-PaperSpigot-a925999]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:498) [custom.jar:git-PaperSpigot-a925999]
at net.minecraft.server.v1_7_R4.PlayerInteractManager.breakBlock(PlayerInteractManager.java:264) [custom.jar:git-PaperSpigot-a925999]
at net.minecraft.server.v1_7_R4.PlayerInteractManager.dig(PlayerInteractManager.java:118) [custom.jar:git-PaperSpigot-a925999]
at net.minecraft.server.v1_7_R4.PlayerConnection.a(PlayerConnection.java:569) [custom.jar:git-PaperSpigot-a925999]
at net.minecraft.server.v1_7_R4.PacketPlayInBlockDig.a(PacketPlayInBlockDig.java:41) [custom.jar:git-PaperSpigot-a925999]
at net.minecraft.server.v1_7_R4.PacketPlayInBlockDig.handle(PacketPlayInBlockDig.java:65) [custom.jar:git-PaperSpigot-a925999]
at net.minecraft.server.v1_7_R4.NetworkManager.a(NetworkManager.java:189) [custom.jar:git-PaperSpigot-a925999]
at net.minecraft.server.v1_7_R4.ServerConnection.c(ServerConnection.java:103) [custom.jar:git-PaperSpigot-a925999]
at net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:801) [custom.jar:git-PaperSpigot-a925999]
at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:286) [custom.jar:git-PaperSpigot-a925999]
at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:651) [custom.jar:git-PaperSpigot-a925999]
at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:557) [custom.jar:git-PaperSpigot-a925999]
at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628) [custom.jar:git-PaperSpigot-a925999]
Caused by: java.lang.IllegalArgumentException: bound must be positive
at java.util.Random.nextInt(Random.java:388) ~[?:1.8.0_131]
at com.surgehcf.listeners.PlayerListener.onBreak(PlayerListener.java:49) ~[?:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_131]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_131]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_131]
这里是我的代码:
public static int randInt(int min, int max) {
// NOTE: This will (intentionally) not run as written so that folks
// copy-pasting have to think about how to initialize their
// Random instance. Initialization of the Random instance is outside
// the main scope of the question, but some decent options are to have
// a field that is initialized once and then re-used as needed or to
// use ThreadLocalRandom (if using at least Java 1.7).
Random rand = new Random();
// nextInt is normally exclusive of the top value,
// so add 1 to make it inclusive
int randomNum = rand.nextInt((max - min) + 1) + min;
return randomNum;
}
@EventHandler
public void onBreak(BlockBreakEvent e) {
Player p = e.getPlayer();
Block b = e.getBlock();
JsonBox bx = GlowstoneMountain.getInstance().getRegionAqui(b.getLocation());
if (bx != null && b.getType() == Material.GLOWSTONE && b.getWorld().getName().equalsIgnoreCase("world_nether")) {
b.getWorld().dropItemNaturally(b.getLocation(), new ItemStack(Material.GLOWSTONE_DUST,randInt(4,2)));
}
}
我总是做一个在4和2之间的随机数,但stil它说的减去基本上我想要的是一个int在2和4之间以获得随机输出
错误确实说明了一切。检查[Java文档](https://docs.oracle.com/javase/8/docs/api/java/util/Random.html#nextInt-int-):*“bound - 上限(独占)。必须是积极的。“* - 你传入的值会导致负值。您应该通过在您的方法中添加安全措施来防止这种情况例如,检查哪个值更大,并将其用作max,另一个用作min。 – domsson
也许你的意思是'randInt(2,4)',而不是'randInt(4,2)',以便得到'min' 2和'max' 4(含)之间的数字? – Andreas
为什么你甚至有交换的界限? 'randInt(4,2)'会给你带'rand.nextInt(-1)',引发异常。参数应该是'randInt(2,4)'。更大的数字之前的较小数字几乎普遍用于表示范围或种类的任何事物。 – QBrute