RapidClipse UI设计器错误

Question

我是RapidClipse集成开发环境的新手，因为我的组织要求我学习和开发它。在安装了2.3.1版本的windows版之后，我创建了一个项目，但是UI设计器显示了一个错误，小部件调色板也没有显示任何内容。下面你可以找到完整的堆栈跟踪：

java.lang.NullPointerException
    at xdev.eclipse.internal.vaadin.model.DefaultBeanInfo.getDefaultValue(DefaultBeanInfo.java:676)
    at xdev.eclipse.internal.vaadin.model.Bean.getValueImpl(Bean.java:855) 
    at xdev.eclipse.internal.vaadin.model.Bean.getValue(Bean.java:829) 
    at xdev.eclipse.internal.vaadin.model.Bean.getConstraints(Bean.java:737)
    at xdev.eclipse.internal.vaadin.ui.editor.VaadinDesigner.adjustRootSizeImpl(VaadinDesigner.java:1725)
    at xdev.eclipse.internal.vaadin.ui.editor.VaadinDesigner.lambda$17(VaadinDesigner.java:1697)
    at xdev.eclipse.internal.vaadin.ui.editor.VaadinDesigner.adjustRootSize(VaadinDesigner.java:1708)
    at xdev.eclipse.internal.vaadin.ui.editor.VaadinDesigner.createUI(VaadinDesigner.java:824) 
    at xdev.eclipse.internal.vaadin.ui.editor.VaadinDesigner.loadContents_createUI(VaadinDesigner.java:764)
    at xdev.eclipse.internal.vaadin.ui.editor.VaadinDesigner.lambda$9(VaadinDesigner.java:701) 
    at xdev.eclipse.internal.core.ui.editor.multi.SwingDesignPart.invokeUIActionImpl(SwingDesignPart.java:80)
    at xdev.eclipse.internal.core.ui.editor.multi.SwingDesignPart.lambda$0(SwingDesignPart.java:69)
    at java.awt.event.InvocationEvent.dispatch(Unknown Source)
    at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
    at java.awt.EventQueue.access$500(Unknown Source)j
    at ava.awt.EventQueue$3.run(Unknown Source)
    at java.awt.EventQueue$3.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
    at java.awt.EventQueue.dispatchEvent(Unknown Source)
    at xdev.eclipse.internal.core.ui.swing.XdevEventQueue.dispatchEvent(XdevEventQueue.java:138)
    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(UnknownSource)
    at java.awt.EventDispatchThread.run(Unknown Source)

Answer 1

我已经能够解决这个问题了。这可能是RapidClipse开发人员的一个bug。这是我所做的：

创建项目时，不会下载用于显示设计器和调色板的UI库，因此您必须下载以下内容：

1. xdev-server-aa
2. xdev-server-ui

并将它们包含在库路径中。然后右键单击项目，选择maven并更新项目。重新启动RapidClipse集成开发环境