Java 插件getDataFolder空指针

我正在和其他一些人一起开发一个Bukkit插件，我正在尝试创建一个日志系统。我已经试着修复我的坏代码两天了，但一无所获。它似乎被卡住的部分是我获取插件的数据文件夹，这样我就可以继续并写入文件夹中的文件

堆栈跟踪：

[18:41:07] [Server thread/ERROR]: Error occurred while enabling TownyEco v1.0-SNAPSHOT (Is it up to date?)
java.lang.ExceptionInInitializerError: null
    at com.writedive.townyeco.TownyEco.onEnable(TownyEco.java:67) ~[?:?]
    at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:264) ~[spigot-1.12.2.jar:git-Spigot-4bd94dc-fb414fe]
    at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:337) [spigot-1.12.2.jar:git-Spigot-4bd94dc-fb414fe]
    at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:403) [spigot-1.12.2.jar:git-Spigot-4bd94dc-fb414fe]
    at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugin(CraftServer.java:381) [spigot-1.12.2.jar:git-Spigot-4bd94dc-fb414fe]
    at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugins(CraftServer.java:330) [spigot-1.12.2.jar:git-Spigot-4bd94dc-fb414fe]
    at net.minecraft.server.v1_12_R1.MinecraftServer.t(MinecraftServer.java:422) [spigot-1.12.2.jar:git-Spigot-4bd94dc-fb414fe]
    at net.minecraft.server.v1_12_R1.MinecraftServer.l(MinecraftServer.java:383) [spigot-1.12.2.jar:git-Spigot-4bd94dc-fb414fe]
    at net.minecraft.server.v1_12_R1.MinecraftServer.a(MinecraftServer.java:338) [spigot-1.12.2.jar:git-Spigot-4bd94dc-fb414fe]
    at net.minecraft.server.v1_12_R1.DedicatedServer.init(DedicatedServer.java:272) [spigot-1.12.2.jar:git-Spigot-4bd94dc-fb414fe]
    at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:545) [spigot-1.12.2.jar:git-Spigot-4bd94dc-fb414fe]
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_161]
Caused by: java.lang.NullPointerException
    at com.writedive.townyeco.messaging.TELogWriter.getRootFolder(TELogWriter.java:12) ~[?:?]
    at com.writedive.townyeco.messaging.TELogWriter.<clinit>(TELogWriter.java:14) ~[?:?]
    ... 12 more

在主类内部，记录器引用自onEnable：

TELogWriter.log("Initialized", TELogWriter.LogType.STARTUP);

我该如何解决该问题

主要类别：

---

Logger类：

不熟悉您正在使用的API，但是

A） 如果getDataFolder（）由于不一致性而仅在某些时候返回null

private static String getRootFolder() {
    FolerObjectTypeOfTheAPI path;
    if (plugin != null && (path = plugin.getDataFolder()) != null)  {
        return path.getPath();
    }
    return null; // or you can return "";
}

---

B） 如果始终为空，则“getDataFolder（）”中指定的路径很可能不是文件系统上的正确路径

TELogWriter中的插件从未初始化，因此下面的代码将抛出NPE

private static String getRootFolder() {
    return plugin.getDataFolder().getPath();
}

初始化TownyEco.java中的TELogWriter.plugin，然后调用日志

TELogWriter.plugin = plugin;
TELogWriter.log("Initialized", TELogWriter.LogType.STARTUP);

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欢迎来到Stackoverflow。这不是一个好主意，张贴链接到你们所有的类。人们不会花时间访问这些链接并通读你的课程。最好的方法是把特定的代码放在这里，并提出特定的问题。请阅读编辑后的内容，尽量避免使用@AmitPhaltankar

TELogWriter.plugin = plugin;
TELogWriter.log("Initialized", TELogWriter.LogType.STARTUP);