我正在尝试使用Maven为一个名为"logmanager"的小型家庭项目生成可执行的jar文件，就像这样：
我将那里显示的代码片段添加到pom.xml中，并运行mvn assembly:assembly。它在logmanager/target文件夹中生成了两个jar文件：logmanager-0.1.0.jar和logmanager-0.1.0-jar-with-dependencies.jar。当我双击第一个jar文件时出现错误：
Could not find the main class: com.gorkwobble.logmanager.LogManager. Program will exit.
当我双击jar-with-dependencies.jar文件时，出现了一个略微不同的错误：
Failed to load Main-Class manifest attribute from: C:\EclipseProjects\logmanager\target\logmanager-0.1.0-jar-with-dependencies.jar
我复制并粘贴了路径和类名，并在 POM 中检查了拼写。我的主类从 Eclipse 的启动配置中可以正常启动。有人能帮我找出为什么我的 JAR 文件不能运行吗？还有，为什么一开始就有两个 JAR 文件？如果您需要更多信息，请告诉我。
以下是完整的 pom.xml，供参考：
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.gorkwobble</groupId>
<artifactId>logmanager</artifactId>
<name>LogManager</name>
<version>0.1.0</version>
<description>Systematically renames specified log files on a scheduled basis. Designed to help manage MUSHClient logging and prevent long, continuous log files.</description>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>2.2</version>
<!-- nothing here -->
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.2-beta-4</version>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
<archive>
<manifest>
<mainClass>com.gorkwobble.logmanager.LogManager</mainClass>
</manifest>
</archive>
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<!-- commons-lang -->
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.4</version>
</dependency>
<!-- Quartz scheduler -->
<dependency>
<groupId>opensymphony</groupId>
<artifactId>quartz</artifactId>
<version>1.6.3</version>
</dependency>
<!-- Quartz 1.6.0 depends on commons collections -->
<dependency>
<groupId>commons-collections</groupId>
<artifactId>commons-collections</artifactId>
<version>3.1</version>
</dependency>
<!-- Quartz 1.6.0 depends on commons logging -->
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.1</version>
</dependency>
<!-- Quartz 1.6.0 requires JTA in non J2EE environments -->
<dependency>
<groupId>javax.transaction</groupId>
<artifactId>jta</artifactId>
<version>1.1</version>
<scope>runtime</scope>
</dependency>
<!-- junitx test assertions -->
<dependency>
<groupId>junit-addons</groupId>
<artifactId>junit-addons</artifactId>
<version>1.4</version>
<scope>test</scope>
</dependency>
<!-- junit dependency; FIXME: make this a separate POM -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.1</version>
</dependency>
</dependencies>
<dependencyManagement>
</dependencyManagement>
</project>
appendAssemblyId切换为false时，我的类在输出jar文件中会被复制一次！有什么办法可以解决这个问题吗？我假设汇编插件通常会创建一个带有“-jar-with-dependencies”后缀的新jar文件，但由于我关闭了它，它会将依赖项与项目文件一起附加到现有的jar文件（使用jar:jar创建）。 - Wojciech Owczarczyk