使用maven-dependency-plugin运行带有eclipse swt依赖项的java jar(Running a java jar with eclipse swt dependencies with maven-dependency-plugin)

 我正在制作一个eclipse插件，我也想让它成为命令行。 正常情况下，通常的问题是在命令行中遇到eclipse依赖项： 
 
Exception in thread "main" java.lang.NoClassDefFoundError: org/eclipse/swt/widgets/Layout
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Unknown Source)
        at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:56)
Caused by: java.lang.ClassNotFoundException: org.eclipse.swt.widgets.Layout
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        ... 3 more
 
 现在我知道这个问题有一个日食常见问题，但这里有点不同。 我正在使用Maven进行构建，使用maven-dependency-plugin将我需要的jar从其他项目添加到此jar作为依赖项： 
 
<build>
    <plugins>
        <plugin>
            <!-- Copy non-Eclipse plugins to target/dependency so that may be referenced 
                for runtime use. -->
            <artifactId>maven-dependency-plugin</artifactId>
            <version>2.8</version>
            <executions>
                <execution>
                    <id>copy-dependencies</id>
                    <goals>
                        <goal>copy-dependencies</goal>
                    </goals>
                    <configuration>
                        <!-- seems the line below is needed otherwise every second run the 
                            copy-dependencies fails , link to bug : https://bugs.eclipse.org/bugs/show_bug.cgi?id=393978 -->
                        <includeScope>runtime</includeScope>
                    </configuration>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>
 
 
 我的Manifest文件中的依赖项如下所示： 
 
Rsrc-Class-Path: ./ 
 lib/jcommon-1.0.23.jar
 lib/jfreechart-1.0.19.jar
 lib/jfreechart-1.0.19-swt.jar
 lib/jfreechart-1.0.19-experimental.jar
 lib/swt.jar
 target/dependency/my.first.package.jar
 target/dependency/my.second.package.jar
Class-Path: .
Rsrc-Main-Class: my.package.Main
Main-Class: org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader

Bundle-ClassPath: .,
 lib/jcommon-1.0.23.jar,
 lib/jfreechart-1.0.19-experimental.jar,
 lib/jfreechart-1.0.19-swt.jar,
 lib/jfreechart-1.0.19.jar,
 lib/swt.jar

Require-Bundle: org.eclipse.core.runtime,
 org.eclipse.ui,
 my.first.package;visibility:=reexport,
 my.second.package;visibility:=reexport,
 ca.odell.glazedlists,
 org.eclipse.nebula.widgets.nattable.core,
 org.eclipse.core.resources,
 org.eclipse.swt
 
 正如您所看到的，我在项目中的lib中添加了一个swt.jar，并在那里引用它，以便在我的jar中包含所有依赖项。 
 
 当我尝试运行命令行时，仍然会出现上述错误，就好像swt.jar不存在一样。 
 
 我错过了什么？ 

I'm making an eclipse plugin that I also want to make it work command line. As normal the usual problem is encountering the eclipse dependencies in command-line:
 
Exception in thread "main" java.lang.NoClassDefFoundError: org/eclipse/swt/widgets/Layout
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Unknown Source)
        at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:56)
Caused by: java.lang.ClassNotFoundException: org.eclipse.swt.widgets.Layout
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        ... 3 more
 
Now I know there is an eclipse FAQ for this problem however here is a bit different. I'm using Maven for build with the maven-dependency-plugin to add jars I need from other project to this jar as dependencies:
 
<build>
    <plugins>
        <plugin>
            <!-- Copy non-Eclipse plugins to target/dependency so that may be referenced 
                for runtime use. -->
            <artifactId>maven-dependency-plugin</artifactId>
            <version>2.8</version>
            <executions>
                <execution>
                    <id>copy-dependencies</id>
                    <goals>
                        <goal>copy-dependencies</goal>
                    </goals>
                    <configuration>
                        <!-- seems the line below is needed otherwise every second run the 
                            copy-dependencies fails , link to bug : https://bugs.eclipse.org/bugs/show_bug.cgi?id=393978 -->
                        <includeScope>runtime</includeScope>
                    </configuration>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>
 
 
The dependencies in my Manifest file looks like this:
 
Rsrc-Class-Path: ./ 
 lib/jcommon-1.0.23.jar
 lib/jfreechart-1.0.19.jar
 lib/jfreechart-1.0.19-swt.jar
 lib/jfreechart-1.0.19-experimental.jar
 lib/swt.jar
 target/dependency/my.first.package.jar
 target/dependency/my.second.package.jar
Class-Path: .
Rsrc-Main-Class: my.package.Main
Main-Class: org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader

Bundle-ClassPath: .,
 lib/jcommon-1.0.23.jar,
 lib/jfreechart-1.0.19-experimental.jar,
 lib/jfreechart-1.0.19-swt.jar,
 lib/jfreechart-1.0.19.jar,
 lib/swt.jar

Require-Bundle: org.eclipse.core.runtime,
 org.eclipse.ui,
 my.first.package;visibility:=reexport,
 my.second.package;visibility:=reexport,
 ca.odell.glazedlists,
 org.eclipse.nebula.widgets.nattable.core,
 org.eclipse.core.resources,
 org.eclipse.swt
 
As you can see I added an swt.jar to a lib inside my project and am referencing it there as to have all my dependencies inside my jar.
 
Still I get the above error when I try to run it command line as if the swt.jar isn't there.
 
What am I missing?

原文：https://stackoverflow.com/questions/39706557