每次尝试获得脱机播放器时，都会出现空指针异常错误

Question

每当我尝试右键单击带有脱机播放器名称的头像时，它只会返回控制台错误，什么也没有发生。如果玩家头的目标玩家在线，则该赛事将正常进行。

错误：

org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:305) ~[spigot-1.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-c3c767f-33d5de3]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-c3c767f-33d5de3]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot-1.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-c3c767f-33d5de3]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot-1.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-c3c767f-33d5de3]
        at org.bukkit.craftbukkit.v1_8_R1.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:226) [spigot-1.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-c3c767f-33d5de3]
        at org.bukkit.craftbukkit.v1_8_R1.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:193) [spigot-1.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-c3c767f-33d5de3]
        at org.bukkit.craftbukkit.v1_8_R1.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:189) [spigot-1.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-c3c767f-33d5de3]
        at net.minecraft.server.v1_8_R1.PlayerConnection.a(PlayerConnection.java:1153) [spigot-1.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-c3c767f-33d5de3]
        at net.minecraft.server.v1_8_R1.PacketPlayInArmAnimation.a(SourceFile:22) [spigot-1.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-c3c767f-33d5de3]
        at net.minecraft.server.v1_8_R1.PacketPlayInArmAnimation.a(SourceFile:8) [spigot-1.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-c3c767f-33d5de3]
        at net.minecraft.server.v1_8_R1.PacketHandleTask.run(SourceFile:13) [spigot-1.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-c3c767f-33d5de3]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_231]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_231]
        at net.minecraft.server.v1_8_R1.MinecraftServer.z(MinecraftServer.java:696) [spigot-1.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-c3c767f-33d5de3]
        at net.minecraft.server.v1_8_R1.DedicatedServer.z(DedicatedServer.java:316) [spigot-1.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-c3c767f-33d5de3]
        at net.minecraft.server.v1_8_R1.MinecraftServer.y(MinecraftServer.java:634) [spigot-1.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-c3c767f-33d5de3]
        at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:537) [spigot-1.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-c3c767f-33d5de3]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_231]
Caused by: java.lang.NullPointerException
        at net.milkbowl.vault.economy.AbstractEconomy.getBalance(AbstractEconomy.java:20) ~[?:?]
        at me.rarfiles.hyrushbounties.Events.onItemClick(Events.java:69) ~[?:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_231]
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_231]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_231]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_231]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:301) ~[spigot-1.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-c3c767f-33d5de3]
        ... 17 more

我的主要代码：https://pastebin.com/30MaKgrD

Answer 1

如果玩家在线而不是离线玩家，则将其退回。

Bukkit.getOfflinePlayer()

这为您提供了离线播放器。