exception - 如何解决 org.eclipse.core.internal.resources.ResourceException

Question

我以前从未遇到过这种异常

org.eclipse.core.internal.resources.ResourceException: Resource '/External Plug-in Libraries' is not open.
at org.eclipse.core.internal.resources.Project.checkAccessible(Project.java:137)
at org.eclipse.core.internal.resources.Project.isNatureEnabled(Project.java:817)
at newmodulewizrd.ui.Integrate.printProjectInfo(Integrate.java:130)
at newmodulewizrd.ui.Integrate.getWorkSpace(Integrate.java:123)
at newmodulewizrd.ui.Integrate.presentOptionsAndAddToMain(Integrate.java:117)
at newmodulewizrd.ui.Integrate$2.actionPerformed(Integrate.java:84)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)

这是我的代码

try {
  if (project.isNatureEnabled("org.eclipse.jdt.core.javanature")) {
    IJavaProject javaProject = JavaCore.create(project);
      if(flag2==0) {
        printPackageInfos(javaProject);
        flag2=1;
      } else {
        IPackageFragmentRoot srcFolder = cm.createNewSourceFolder(project);
        newModule = srcFolder.createPackageFragment(textfield.getText(), true,null);
        printPackageInfos(javaProject);
        try {
          cm.refreshWorkspace();
        } catch (CoreException e) {
          e.printStackTrace();
        }
      }
   } else {
     System.out.println("something went wrong here");
   }
 } catch (CoreException e) {
   e.printStackTrace();
 }

我怀疑它正在尝试访问我的 java 项目中的“jre 系统库 [jre6] 文件夹 {below my src folder}”

关于如何解决它有任何想法吗？

Answer 1

我找到了问题的解决方案，所以我把它贴在这里，这样任何有同样问题的人都可以受益

显然这里有一个指向“幻影项目”的链接

Phantom project in an Eclipse plugin

所以我按照步骤操作

1. Activate the 'Plug-ins' view by going to Window > Show View > Other > PDE > Plug-ins.

2. Select all plug-ins in the view.

然后重新启动我的 IDE。我的“外部插件库 Java 项目”现在可见。我删除了这个项目，现在一切都很好。