Maven不会将目标依赖项添加到目标jar [英] Maven won't add local dependency to target jar

问题描述

我有一个maven项目，除了使用普通的repos之外还使用了一个本地jar。 jar以清单的方式定义：

I have a maven project that besides using normal repos also uses a local jar. The jar is defined in the manifest this way:

    <dependency>
        <groupId>com.mirrorworlds</groupId>
        <artifactId>lstnef</artifactId>
        <version>1.0.0</version>
        <optional>false</optional>
        <scope>system</scope>
        <systemPath>${basedir}/lib/lstnef-1.0.0.jar</systemPath>
    </dependency>

安装脚本成功运行，但应用程序启动后我得到了：

The install script works successfully, but after the app is launched I get this:

Exception in thread "main" java.lang.NoClassDefFoundError: 
com/mirrorworlds/lifestreams/mail/tnef/internet/TnefMultipart 
at ...processMails(MailProcessor.java:57)
at ...main(MailReader.java:42)

当我查看目标jar时，我也找不到这些类，尽管它们应该在 lstnef-1.0.0.jar

When I look inside the target jar I can't find these classes as well, though they are supposed to be inside lstnef-1.0.0.jar

我会感谢任何解决这个谜团的建议。

I'll be thankful for any suggestions on solving this mystery.

推荐答案

我使用的可能解决方案是在编译阶段之前将此系统JAR安装到本地Maven存储库中，然后将此JAR作为Maven工件引用。即。

Possible solution I use is installing this system JAR into the local Maven repository before compilation phase and then reference this JAR as a Maven artifact. I.e.

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-install-plugin</artifactId>
    <version>2.2</version>
    <executions>
        <execution>
            <id>your-file</id>
            <inherited>false</inherited>
            <phase>validate</phase>
            <configuration>
                <file>${pom.basedir}/lib/your-file-4.8.jar</file>
                <repositoryLayout>default</repositoryLayout>
                <groupId>your-file</groupId>
                <artifactId>your-file</artifactId>
                <version>4.8</version>
                <packaging>jar</packaging>
                <generatePom>true</generatePom>
            </configuration>
            <goals>
                <goal>install-file</goal>
            </goals>
        </execution>
    </executions>
</plugin>

然后引用它：

<dependency>
    <groupId>your-file</groupId>
    <artifactId>your-file</artifactId>
    <version>4.8</version>    
</dependency>

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