java - 在eclipse中运行时找不到类异常

Question

我在 eclipse 中运行下面的代码，但得到了一个找不到类的异常:

         import org.eclipse.jface.window.Window;
         import org.eclipse.swt.SWT;
         import org.eclipse.swt.widgets.Display;
         import org.eclipse.swt.widgets.Shell;



        public class DialogClass {

/**
 * @param args
 */
public static void main(String[] args) {
    // TODO Auto-generated method stub

    System.out.println("TEst");
    Shell frame = new Shell(SWT.SHELL_TRIM);

    PublishGenericArtefactDialog publishGenericArtefactDialog =            
                       new PublishGenericArtefactDialog(frame);

    publishGenericArtefactDialog.setTitle("Test");

    if (publishGenericArtefactDialog.open() == Window.CANCEL){
        try {
            throw new Exception("Cancelled");
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
      }
       }

       }

我得到的错误是

    TEst
    Exception in thread "main" java.lang.NoClassDefFoundError: org/eclipse/core/runtime/IStatus
at DialogClass.main(DialogClass.java:19)
     Caused by: java.lang.ClassNotFoundException: org.eclipse.core.runtime.IStatus
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
... 1 more

需要帮助

Answer 1

如 this thread 中所述

Have you listed the org.eclipse.core.runtime as a plugin dependency in the Manfest.MF?
I think that the IStatus is actually in an Equinox package, but the runtime includes the equinox plugin at runtime.
If you're just running it as a Java application (e.g. by sticking Jars on the classpath) then you'll probably need the org.eclipse.equinox.core/runtime or similar.

感谢您的建议。通过将 org.eclipse.equinox.common 和 org.eclipse.core.commands 添加到项目 - 我将其作为 SWT 应用程序运行。

如 AlBlue 所述在评论中，Eclipse wiki on JFace确认:

JFace can be used in standalone SWT+JFace apps, without requiring the Eclipse Runtime or other parts of the Eclipse Platform.
This was made easier to do in 3.2 (2006), with the only prerequisites for JFace being reduced to:

• SWT,
• the new org.eclipse.equinox.common plug-in,
• and org.eclipse.core.commands plug-in.

For more details, see Bug 49497.

In 3.3 an optional dependency on the org.osgi.framework package was added which is defined in the org.eclipse.osgi.
If this plug-in is absent JFace will continue to function but without the benefit of internationalization support for its images.