NoClassDefFoundError on Spigot插件尝试包含Apache Commons文本

Question

我正在编写一个Spigot插件，其中我需要使用Levenshtein距离，所以我使用的是Apache Commons Text 1.8

当我导出插件并尝试运行它时，我得到了一个实例化LevenshteinDistance对象的NoClassDefFoundError。

我正在使用Gradle来设置依赖项。

build.gradle：

repositories {
    // Use jcenter for resolving your dependencies.
    // You can declare any Maven/Ivy/file repository here.
    jcenter()
    mavenCentral()

    maven {
        url "https://hub.spigotmc.org/nexus/content/repositories/snapshots/"
    }

     maven {
        url "https://repo.dmulloy2.net/nexus/repository/public/"
     }
}

dependencies {
    // This dependency is exported to consumers, that is to say found on their compile classpath.
    api 'org.apache.commons:commons-math3:3.6.1'

    // This dependency is used internally, and not exposed to consumers on their own compile classpath.
    implementation 'com.google.guava:guava:27.0.1-jre'

    // Use JUnit test framework
    testImplementation 'junit:junit:4.12'

    compileOnly 'org.bukkit:bukkit:1.15.2-R0.1-SNAPSHOT';
    compileOnly 'com.comphenix.protocol:ProtocolLib:4.5.0';
    compile 'org.apache.commons:commons-text:1.8';
}

错误

[15:06:10] [Server thread/ERROR]: Error occurred while enabling CubeChat v0.1 (Is it up to date?)
java.lang.NoClassDefFoundError: org/apache/commons/text/similarity/LevenshteinDistance
        at com.cubepalace.cubechat.listeners.FilterListener.<init>(FilterListener.java:30) ~[?:?]
        at com.cubepalace.cubechat.CubeChat.register(CubeChat.java:71) ~[?:?]
        at com.cubepalace.cubechat.CubeChat.onEnable(CubeChat.java:44) ~[?:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:263) ~[spigot-1.15.2.jar:git-Spigot-8faa8b4-fba9f48]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:351) [spigot-1.15.2.jar:git-Spigot-8faa8b4-fba9f48]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:432) [spigot-1.15.2.jar:git-Spigot-8faa8b4-fba9f48]
        at com.rylinaux.plugman.util.PluginUtil.load(PluginUtil.java:366) [PlugMan.jar:?]
        at com.rylinaux.plugman.command.LoadCommand.execute(LoadCommand.java:114) [PlugMan.jar:?]
        at com.rylinaux.plugman.PlugManCommandHandler.onCommand(PlugManCommandHandler.java:95) [PlugMan.jar:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45) [spigot-1.15.2.jar:git-Spigot-8faa8b4-fba9f48]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:149) [spigot-1.15.2.jar:git-Spigot-8faa8b4-fba9f48]
        at org.bukkit.craftbukkit.v1_15_R1.CraftServer.dispatchCommand(CraftServer.java:713) [spigot-1.15.2.jar:git-Spigot-8faa8b4-fba9f48]
        at org.bukkit.craftbukkit.v1_15_R1.CraftServer.dispatchServerCommand(CraftServer.java:698) [spigot-1.15.2.jar:git-Spigot-8faa8b4-fba9f48]
        at net.minecraft.server.v1_15_R1.DedicatedServer.handleCommandQueue(DedicatedServer.java:443) [spigot-1.15.2.jar:git-Spigot-8faa8b4-fba9f48]
        at net.minecraft.server.v1_15_R1.DedicatedServer.b(DedicatedServer.java:407) [spigot-1.15.2.jar:git-Spigot-8faa8b4-fba9f48]
        at net.minecraft.server.v1_15_R1.MinecraftServer.a(MinecraftServer.java:984) [spigot-1.15.2.jar:git-Spigot-8faa8b4-fba9f48]
        at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:824) [spigot-1.15.2.jar:git-Spigot-8faa8b4-fba9f48]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
Caused by: java.lang.ClassNotFoundException: org.apache.commons.text.similarity.LevenshteinDistance
        at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[?:1.8.0_212]
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:167) ~[spigot-1.15.2.jar:git-Spigot-8faa8b4-fba9f48]
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:96) ~[spigot-1.15.2.jar:git-Spigot-8faa8b4-fba9f48]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_212]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_212]
        ... 18 more

如何将所需的库打包到jar中，以便可以运行此程序？使用Eclipse IDE。

Answer 1

您已经正确地计算出依赖项在构建时存在，但在运行时不存在。

你需要做的是一个叫做“着色”的过程。有一个Gradle插件可以做到这一点。

这里有一个链接：https://imperceptiblethoughts.com/shadow/getting-started/#default-java-groovy-tasks