插件找不到 MongoDB 类答案

【问题标题】：Plugin dont find the MongoDB Classes插件找不到 MongoDB 类
【发布时间】：2022-07-22 02:52:30
【问题描述】：

我用 MongoDB 编写了一个插件，并用 Maven 添加了库

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>Test</artifactId>
    <version>1.0-SNAPSHOT</version>


    <properties>
        <maven.compiler.source>16</maven.compiler.source>
        <maven.compiler.target>16</maven.compiler.target>
    </properties>


    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <version>3.2.2</version>
                <configuration>
                </configuration>
                <executions>
                    <execution>
                        <phase>deploy</phase>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-assembly-plugin</artifactId>
                <version>3.3.0</version>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <descriptorRefs>
                        <descriptorRef>jar-with-dependencies</descriptorRef>
                    </descriptorRefs>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <dependencies>
        <dependency>
            <groupId>org.mongodb</groupId>
            <artifactId>mongodb-driver-sync</artifactId>
            <version>3.11.3</version>
        </dependency>
    </dependencies>


</project>

我认为库必须在 Jar-File 中。但是没有mongodb libarie

每次我启动服务器时，都会崩溃。

java.lang.NoClassDefFoundError: com/mongodb/client/MongoClients
        at me.moritz.mysql.MongoProvider.connect(MongoProvider.java:12) ~[?:?]
        at me.moritz.Main.onEnable(Main.java:36) ~[?:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:263) ~[patched_1.16.5.jar:git-Paper-790]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:370) ~[patched_1.16.5.jar:git-Paper-790]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:500) ~[patched_1.16.5.jar:git-Paper-790]
        at org.bukkit.craftbukkit.v1_16_R3.CraftServer.enablePlugin(CraftServer.java:518) ~[patched_1.16.5.jar:git-Paper-790]
        at org.bukkit.craftbukkit.v1_16_R3.CraftServer.enablePlugins(CraftServer.java:432) ~[patched_1.16.5.jar:git-Paper-790]
        at org.bukkit.craftbukkit.v1_16_R3.CraftServer.reload(CraftServer.java:965) ~[patched_1.16.5.jar:git-Paper-790]
        at org.bukkit.Bukkit.reload(Bukkit.java:726) ~[patched_1.16.5.jar:git-Paper-790]
        at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:54) ~[patched_1.16.5.jar:git-Paper-790]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:159) ~[patched_1.16.5.jar:git-Paper-790]
        at org.bukkit.craftbukkit.v1_16_R3.CraftServer.dispatchCommand(CraftServer.java:826) ~[patched_1.16.5.jar:git-Paper-790]
        at org.bukkit.craftbukkit.v1_16_R3.CraftServer.dispatchServerCommand(CraftServer.java:788) ~[patched_1.16.5.jar:git-Paper-790]
        at net.minecraft.server.v1_16_R3.DedicatedServer.handleCommandQueue(DedicatedServer.java:470) ~[patched_1.16.5.jar:git-Paper-790]
        at net.minecraft.server.v1_16_R3.DedicatedServer.b(DedicatedServer.java:437) ~[patched_1.16.5.jar:git-Paper-790]
        at net.minecraft.server.v1_16_R3.MinecraftServer.a(MinecraftServer.java:1347) ~[patched_1.16.5.jar:git-Paper-790]
        at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:1135) ~[patched_1.16.5.jar:git-Paper-790]
        at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:291) ~[patched_1.16.5.jar:git-Paper-790]
        at java.lang.Thread.run(Thread.java:831) [?:?]
Caused by: java.lang.ClassNotFoundException: com.mongodb.client.MongoClients
        at org.bukkit.plugin.java.PluginClassLoader.loadClass0(PluginClassLoader.java:155) ~[patched_1.16.5.jar:git-Paper-790]
        at org.bukkit.plugin.java.PluginClassLoader.loadClass(PluginClassLoader.java:114) ~[patched_1.16.5.jar:git-Paper-790]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:519) ~[?:?]
        ... 19 more

我搜索问题已经超过 3 天了。我的知识已经走到了尽头。我尝试了类路径选项，安装 maven shade 插件 idk

【问题讨论】：

您是否很好地使用了MyPlugin-with-dependencies.jar 文件？另外，它是否适用于maven deploy 命令？
我想当我在 Maven 中下载它时它会起作用。我该如何使用它？

标签： java mongodb minecraft spigot

【解决方案1】：

服务器找不到该类，因为它不存在，你构建的插件错误。

尝试使用构建工件构建您的插件。

IntelliJ IDEA

Ctrl + Alt + Shift + s → 工件 → JAR → 来自具有依赖关系的模块（不要进入主类） → Ok 然后 （在任务栏上）构建 → 构建工件 → （您的工件名称）构建

如果你使用 Eclipse（或其他），我帮不了你。

【讨论】：