JAR文件执行：找不到/加载主类

Question

    <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.1</version>
        <configuration>
            <source>${jdk.version}</source>
            <target>${jdk.version}</target>
        </configuration>

    </plugin>
    <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-jar-plugin</artifactId>
        <version>3.0.1</version>
        <configuration>
            <archive>
                <manifest>
                    <addClasspath>true</addClasspath>
                    <classpathLayoutType>custom</classpathLayoutType>
                    <customClasspathLayout>lib/${artifact.artifactId}${artifact.dashClassifier?}-${artifact.version}.${artifact.extension}</customClasspathLayout>
                    <mainClass>mypkg.Main</mainClass>
                </manifest>
                <manifestEntries>
                    <Class-Path>. ${project.build.directory}\resources ${project.build.directory}\lib</Class-Path>
                </manifestEntries>
            </archive>
        </configuration>
    </plugin>

    <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-dependency-plugin</artifactId>
        <executions>
            <execution>
                <id>copy-dependencies</id>
                <phase>package</phase>
                <goals>
                    <goal>copy-dependencies</goal>
                </goals>
                <configuration>
                    <outputDirectory>${project.build.directory}\lib</outputDirectory>
                    <overWriteReleases>false</overWriteReleases>
                    <overWriteSnapshots>false</overWriteSnapshots>
                    <overWriteIfNewer>true</overWriteIfNewer>
                </configuration>
            </execution>
        </executions>
    </plugin>

    <plugin>
        <artifactId>maven-resources-plugin</artifactId>
        <version>2.6</version>
        <executions>
            <execution>
                <id>copy-resources</id>
                <phase>validate</phase>
                <goals>
                    <goal>copy-resources</goal>
                </goals>
                <configuration>
                    <outputDirectory>${project.build.directory}\resources</outputDirectory>
                    <resources>
                        <resource>
                            <directory>src/main/resources</directory>
                            <filtering>true</filtering>
                        </resource>
                    </resources>
                </configuration>
            </execution>
        </executions>
    </plugin>

package mypkg;

import java.io.IOException;

public class Main {

    public static void main(String[] args)
            throws InstantiationException, IllegalAccessException, ClassNotFoundException, IOException {

 .......
 .......
}
}

jar是用“meta-inf”文件夹中的清单文件创建的。清单文件（为了查看目的删除了类路径中的一些jar条目）：

Manifest-Version: 1.0
Built-By: userName
Class-Path: . D:/project2/mypkg/target/ D:/project2/mypkg/target/resources D:/project2/mypkg/target/lib lib/hive-jdbc.jar lib/hive-common.jar lib/commons-lang.jar 
Created-By: Apache Maven 3.3.9
Build-Jdk: 1.8.0_101
Main-Class: mypkg.Main

文件夹结构：

folder-
       -lib
            -(all the jar files)
       -resources
            -(properties file)
       -application.jar

我正在命令提示符下使用'java-jar application.jar mypkg.main'。

有人能告诉我是什么造成的错误和如何解决它吗？

Answer 1

终于找到了解决办法。只需要在清单文件中做一些修改。罐子的版本不见了。

最终清单文件（为了查看目的，删除了类路径中的一些jar条目）：：

Manifest-Version: 1.0
Built-By: userName
Class-Path: lib/hive-jdbc-1.1.0.jar lib/hive-common-1.1.0.jar 
Created-By: Apache Maven 3.3.9
Build-Jdk: 1.8.0_101
Main-Class: mypkg.Main

请注意：通配符（例如“lib/*”）在清单文件（Java6及以上版本）中的'class-path'头中不起作用。