如何在Java中使用代码正确地将一个或多个包移动到另一个包中

Question

我正在开发一个应用程序[桌面swing应用程序]，它需要我通过代码进行重构。[我知道接口和功能已经由eclipse IDE 提供，但我需要通过代码

完成此操作。]

我需要做的重构的第一阶段是移动选中的包[选择的选项是通过复选框给出的，该复选框使用JDT的思想显示工作区中所有可用的包。我在这个位置使用了教程:http://www.vogella.de/articles/EclipseJDT/article.html]

现在我已经选择了我希望移动到另一个包的包，

我使用了这段代码

233.   for (IPackageFragment mypackage : packages) {
234.                    if ((mypackage.getKind() == IPackageFragmentRoot.K_SOURCE) && (searchifSelected(mypackage.getElementName())==true) ){
235.                        IJavaElement container = newModule.getPrimaryElement();
236.                        mypackage.move(container, null, null, true, null);
                }
     }

searchifSelected(mypackage.getElementName())==true告诉我是否选择了要移动的特定包

IJavaElement container = newModule.getPrimaryElement();是容器[新包]，将包含选定的包

mypackage。据我所知，这个命令应该将"mypackage"作为"子"移动到"container"。

然而，我正面临着这样的问题:

 Java Model Exception: Java Model Status [Invalid destination: 'devFromSupplier [in src [in test]]']
at org.eclipse.jdt.internal.core.MultiOperation.processElements(MultiOperation.java:175)
at org.eclipse.jdt.internal.core.CopyResourceElementsOperation.processElements(CopyResourceElementsOperation.java:417)
at org.eclipse.jdt.internal.core.MultiOperation.executeOperation(MultiOperation.java:90)
at org.eclipse.jdt.internal.core.JavaModelOperation.run(JavaModelOperation.java:728)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1800)
at org.eclipse.jdt.internal.core.JavaModelOperation.runOperation(JavaModelOperation.java:793)
at org.eclipse.jdt.internal.core.JavaModel.runOperation(JavaModel.java:297)
at org.eclipse.jdt.internal.core.JavaModel.move(JavaModel.java:258)
at org.eclipse.jdt.internal.core.PackageFragment.move(PackageFragment.java:420)
at newmodulewizrd.ui.Integrate.printPackageInfos(Integrate.java:236)
at newmodulewizrd.ui.Integrate.printProjectInfo(Integrate.java:177)
at newmodulewizrd.ui.Integrate.getWorkSpace(Integrate.java:149)
at newmodulewizrd.ui.Integrate.moveToOneModule(Integrate.java:120)
at newmodulewizrd.ui.Integrate$1.actionPerformed(Integrate.java:79)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$000(Unknown Source)
at java.awt.EventQueue$1.run(Unknown Source)
at java.awt.EventQueue$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$2.run(Unknown Source)
at java.awt.EventQueue$2.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

我认为这意味着我给出了错误的参数。

谁能帮我一下我该怎么办?

Answer 1

我在eclipse论坛[我正在使用的IDE]上发布了这个问题，然后发现这个问题/错误的方法是它在循环中不起作用。您必须一个接一个地显式调用这个函数。这个链接也报告了一个类似的错误:

https://bugs.eclipse.org/bugs/show_bug.cgi?id=240286 [w.r。

Answer 2

对于那些面临同样问题的人，我发现了另一种方法，即使用rename方法并使其作为移动函数工作。虽然，这可能不是最好的选择。

我用下面的代码替换上面的代码

     for (IPackageFragment mypackage : packages) {
                if ((mypackage.getKind() == IPackageFragmentRoot.K_SOURCE) && (searchifSelected(mypackage.getElementName())==true) ){
                    mypackage.rename(textfield.getText()+"."+mypackage.getElementName(), true, null);
                }
            }