我几乎对Java一无所知，但我尝试将一个开源的Minecraft插件从Github导出到.jar文件中。我使用Eclipse将所有代码导出到一个jar中，但当我尝试运行插件时，它给了我错误。
org.bukkit.plugin.InvalidPluginException: java.lang.NoClassDefFoundError: net/ess3/api/MaxMoneyException
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:133) ~[spigot.jar:git-Spigot-dcd1643-e60fc34]
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:327) ~[spigot.jar:git-Spigot-dcd1643-e60fc34]
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:248) [spigot.jar:git-Spigot-dcd1643-e60fc34]
at org.bukkit.craftbukkit.v1_12_R1.CraftServer.loadPlugins(CraftServer.java:305) [spigot.jar:git-Spigot-dcd1643-e60fc34]
at net.minecraft.server.v1_12_R1.DedicatedServer.init(DedicatedServer.java:205) [spigot.jar:git-Spigot-dcd1643-e60fc34]
at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:545) [spigot.jar:git-Spigot-dcd1643-e60fc34]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_301]
Caused by: java.lang.NoClassDefFoundError: net/ess3/api/MaxMoneyException
at com.maximuspayne.navycraft.NavyCraft.<init>(NavyCraft.java:73) ~[?:?]
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_301]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_301]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_301]
at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[?:1.8.0_301]
at java.lang.Class.newInstance(Unknown Source) ~[?:1.8.0_301]
at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:90) ~[spigot.jar:git-Spigot-dcd1643-e60fc34]
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:129) ~[spigot.jar:git-Spigot-dcd1643-e60fc34]
... 6 more
Caused by: java.lang.ClassNotFoundException: net.ess3.api.MaxMoneyException
at java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.8.0_301]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:152) ~[spigot.jar:git-Spigot-dcd1643-e60fc34]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:100) ~[spigot.jar:git-Spigot-dcd1643-e60fc34]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_301]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_301]
at com.maximuspayne.navycraft.NavyCraft.<init>(NavyCraft.java:73) ~[?:?]
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_301]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_301]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_301]
at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[?:1.8.0_301]
at java.lang.Class.newInstance(Unknown Source) ~[?:1.8.0_301]
at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:90) ~[spigot.jar:git-Spigot-dcd1643-e60fc34]
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:129) ~[spigot.jar:git-Spigot-dcd1643-e60fc34]
... 6 more
如果需要，下面是github页面：https://github.com/Gregory1346/NavyCraft-Reloaded
有人能帮我吗？提前谢谢。
错误日志显示找不到类。这里，它不是jar中的类，所以你必须找到它应该在哪里。net.ess3是用于必需品的，所以你至少需要essentials。
如这里所写(在插件的spigotmc页面上，您需要一些依赖项：
- 本质X
- WorldEdit
- WorldGuard