java - NetBeans Matisse 中的表单加载错误-6ren

java - NetBeans Matisse 中的表单加载错误

转载作者：行者123 更新时间：2023-12-01 14:21:23

我是JAVA桌面应用程序开发的新手，最初开始创建默认包下的所有类。后来我了解到这不是一个好的做法，所以我根据类的功能将它们移动到不同的包中。作为此转变的一部分，我通过重构将 GUI 类与两个自定义 JPanel 组件一起移动到一个包 (bd.ac.du.bmpt.gui) 中。然后我对我的项目进行了清理和构建，并运行了该应用程序。一切似乎都运转良好。没有编译或运行时错误或任何错误。但是当我尝试在 GUI 类中切换到设计 View 时，它显示表单加载错误，这些错误都与两个自定义 JPanel 组件相关。

Form loading error in NetBeansMatisse

它会抛出这些异常:

java.lang.ClassNotFoundException: GPanel
    at org.netbeans.modules.form.project.ProjectClassLoader.findClass(ProjectClassLoader.java:188)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
    at org.netbeans.modules.form.project.FormClassLoader.findClass(FormClassLoader.java:83)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:266)
    at org.netbeans.modules.form.project.ClassPathUtils.loadClass(ClassPathUtils.java:114)
    at org.netbeans.modules.form.FormUtils.loadClass(FormUtils.java:1474)
    at org.netbeans.modules.form.PersistenceObjectRegistry.loadClass(PersistenceObjectRegistry.java:98)
    at org.netbeans.modules.form.GandalfPersistenceManager.restoreComponent(GandalfPersistenceManager.java:718)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadComponent(GandalfPersistenceManager.java:994)
    at org.netbeans.modules.form.GandalfPersistenceManager.restoreComponent(GandalfPersistenceManager.java:850)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadComponent(GandalfPersistenceManager.java:994)
    at org.netbeans.modules.form.GandalfPersistenceManager.restoreComponent(GandalfPersistenceManager.java:850)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadComponent(GandalfPersistenceManager.java:994)
    at org.netbeans.modules.form.GandalfPersistenceManager.restoreComponent(GandalfPersistenceManager.java:850)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadComponent(GandalfPersistenceManager.java:994)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadForm(GandalfPersistenceManager.java:530)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadForm(GandalfPersistenceManager.java:312)
    at org.netbeans.modules.form.FormEditor$2.run(FormEditor.java:348)
    at org.netbeans.modules.form.FormLAF$2.run(FormLAF.java:293)
    at org.openide.util.Mutex.doEventAccess(Mutex.java:1363)
    at org.openide.util.Mutex.readAccess(Mutex.java:322)
    at org.netbeans.modules.form.FormLAF.executeWithLookAndFeel(FormLAF.java:276)
    at org.netbeans.modules.form.FormEditor.loadFormData(FormEditor.java:345)
    at org.netbeans.modules.nbform.FormEditorSupport.loadOpeningForm(FormEditorSupport.java:462)
    at org.netbeans.modules.nbform.FormDesignerTC.loadForm(FormDesignerTC.java:279)
    at org.netbeans.modules.nbform.FormDesignerTC.access$300(FormDesignerTC.java:87)
    at org.netbeans.modules.nbform.FormDesignerTC$PreLoadTask$1.run(FormDesignerTC.java:268)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:727)
    at java.awt.EventQueue.access$200(EventQueue.java:103)
    at java.awt.EventQueue$3.run(EventQueue.java:688)
    at java.awt.EventQueue$3.run(EventQueue.java:686)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:697)
    at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
java.lang.ClassNotFoundException: GPanel
    at org.netbeans.modules.form.project.ProjectClassLoader.findClass(ProjectClassLoader.java:188)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
    at org.netbeans.modules.form.project.FormClassLoader.findClass(FormClassLoader.java:83)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:266)
    at org.netbeans.modules.form.project.ClassPathUtils.loadClass(ClassPathUtils.java:114)
    at org.netbeans.modules.form.FormUtils.loadClass(FormUtils.java:1474)
    at org.netbeans.modules.form.PersistenceObjectRegistry.loadClass(PersistenceObjectRegistry.java:98)
    at org.netbeans.modules.form.GandalfPersistenceManager.restoreComponent(GandalfPersistenceManager.java:718)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadComponent(GandalfPersistenceManager.java:994)
    at org.netbeans.modules.form.GandalfPersistenceManager.restoreComponent(GandalfPersistenceManager.java:850)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadComponent(GandalfPersistenceManager.java:994)
    at org.netbeans.modules.form.GandalfPersistenceManager.restoreComponent(GandalfPersistenceManager.java:850)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadComponent(GandalfPersistenceManager.java:994)
    at org.netbeans.modules.form.GandalfPersistenceManager.restoreComponent(GandalfPersistenceManager.java:850)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadComponent(GandalfPersistenceManager.java:994)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadForm(GandalfPersistenceManager.java:530)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadForm(GandalfPersistenceManager.java:312)
    at org.netbeans.modules.form.FormEditor$2.run(FormEditor.java:348)
    at org.netbeans.modules.form.FormLAF$2.run(FormLAF.java:293)
    at org.openide.util.Mutex.doEventAccess(Mutex.java:1363)
    at org.openide.util.Mutex.readAccess(Mutex.java:322)
    at org.netbeans.modules.form.FormLAF.executeWithLookAndFeel(FormLAF.java:276)
    at org.netbeans.modules.form.FormEditor.loadFormData(FormEditor.java:345)
    at org.netbeans.modules.nbform.FormEditorSupport.loadOpeningForm(FormEditorSupport.java:462)
    at org.netbeans.modules.nbform.FormDesignerTC.loadForm(FormDesignerTC.java:279)
    at org.netbeans.modules.nbform.FormDesignerTC.access$300(FormDesignerTC.java:87)
    at org.netbeans.modules.nbform.FormDesignerTC$PreLoadTask$1.run(FormDesignerTC.java:268)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:727)
    at java.awt.EventQueue.access$200(EventQueue.java:103)
    at java.awt.EventQueue$3.run(EventQueue.java:688)
    at java.awt.EventQueue$3.run(EventQueue.java:686)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:697)
    at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
java.lang.ClassNotFoundException: GridPanel
    at org.netbeans.modules.form.project.ProjectClassLoader.findClass(ProjectClassLoader.java:188)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
    at org.netbeans.modules.form.project.FormClassLoader.findClass(FormClassLoader.java:83)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:266)
    at org.netbeans.modules.form.project.ClassPathUtils.loadClass(ClassPathUtils.java:114)
    at org.netbeans.modules.form.FormUtils.loadClass(FormUtils.java:1474)
    at org.netbeans.modules.form.PersistenceObjectRegistry.loadClass(PersistenceObjectRegistry.java:98)
    at org.netbeans.modules.form.GandalfPersistenceManager.restoreComponent(GandalfPersistenceManager.java:718)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadComponent(GandalfPersistenceManager.java:994)
    at org.netbeans.modules.form.GandalfPersistenceManager.restoreComponent(GandalfPersistenceManager.java:850)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadComponent(GandalfPersistenceManager.java:994)
    at org.netbeans.modules.form.GandalfPersistenceManager.restoreComponent(GandalfPersistenceManager.java:850)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadComponent(GandalfPersistenceManager.java:994)
    at org.netbeans.modules.form.GandalfPersistenceManager.restoreComponent(GandalfPersistenceManager.java:850)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadComponent(GandalfPersistenceManager.java:994)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadForm(GandalfPersistenceManager.java:530)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadForm(GandalfPersistenceManager.java:312)
    at org.netbeans.modules.form.FormEditor$2.run(FormEditor.java:348)
    at org.netbeans.modules.form.FormLAF$2.run(FormLAF.java:293)
    at org.openide.util.Mutex.doEventAccess(Mutex.java:1363)
    at org.openide.util.Mutex.readAccess(Mutex.java:322)
    at org.netbeans.modules.form.FormLAF.executeWithLookAndFeel(FormLAF.java:276)
    at org.netbeans.modules.form.FormEditor.loadFormData(FormEditor.java:345)
    at org.netbeans.modules.nbform.FormEditorSupport.loadOpeningForm(FormEditorSupport.java:462)
    at org.netbeans.modules.nbform.FormDesignerTC.loadForm(FormDesignerTC.java:279)
    at org.netbeans.modules.nbform.FormDesignerTC.access$300(FormDesignerTC.java:87)
    at org.netbeans.modules.nbform.FormDesignerTC$PreLoadTask$1.run(FormDesignerTC.java:268)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:727)
    at java.awt.EventQueue.access$200(EventQueue.java:103)
    at java.awt.EventQueue$3.run(EventQueue.java:688)
    at java.awt.EventQueue$3.run(EventQueue.java:686)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:697)
    at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
java.lang.ClassNotFoundException: GPanel
    at org.netbeans.modules.form.project.ProjectClassLoader.findClass(ProjectClassLoader.java:188)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
    at org.netbeans.modules.form.project.FormClassLoader.findClass(FormClassLoader.java:83)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:266)
    at org.netbeans.modules.form.project.ClassPathUtils.loadClass(ClassPathUtils.java:114)
    at org.netbeans.modules.form.FormUtils.loadClass(FormUtils.java:1474)
    at org.netbeans.modules.form.PersistenceObjectRegistry.loadClass(PersistenceObjectRegistry.java:98)
    at org.netbeans.modules.form.GandalfPersistenceManager.restoreComponent(GandalfPersistenceManager.java:718)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadComponent(GandalfPersistenceManager.java:994)
    at org.netbeans.modules.form.GandalfPersistenceManager.restoreComponent(GandalfPersistenceManager.java:850)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadComponent(GandalfPersistenceManager.java:994)
    at org.netbeans.modules.form.GandalfPersistenceManager.restoreComponent(GandalfPersistenceManager.java:850)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadComponent(GandalfPersistenceManager.java:994)
    at org.netbeans.modules.form.GandalfPersistenceManager.restoreComponent(GandalfPersistenceManager.java:850)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadComponent(GandalfPersistenceManager.java:994)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadForm(GandalfPersistenceManager.java:530)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadForm(GandalfPersistenceManager.java:312)
    at org.netbeans.modules.form.FormEditor$2.run(FormEditor.java:348)
    at org.netbeans.modules.form.FormLAF$2.run(FormLAF.java:293)
    at org.openide.util.Mutex.doEventAccess(Mutex.java:1363)
    at org.openide.util.Mutex.readAccess(Mutex.java:322)
    at org.netbeans.modules.form.FormLAF.executeWithLookAndFeel(FormLAF.java:276)
    at org.netbeans.modules.form.FormEditor.loadFormData(FormEditor.java:345)
    at org.netbeans.modules.nbform.FormEditorSupport.loadOpeningForm(FormEditorSupport.java:462)
    at org.netbeans.modules.nbform.FormDesignerTC.loadForm(FormDesignerTC.java:279)
    at org.netbeans.modules.nbform.FormDesignerTC.access$300(FormDesignerTC.java:87)
    at org.netbeans.modules.nbform.FormDesignerTC$PreLoadTask$1.run(FormDesignerTC.java:268)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:727)
    at java.awt.EventQueue.access$200(EventQueue.java:103)
    at java.awt.EventQueue$3.run(EventQueue.java:688)
    at java.awt.EventQueue$3.run(EventQueue.java:686)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:697)
    at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
java.lang.ClassNotFoundException: GPanel
    at org.netbeans.modules.form.project.ProjectClassLoader.findClass(ProjectClassLoader.java:188)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
    at org.netbeans.modules.form.project.FormClassLoader.findClass(FormClassLoader.java:83)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:266)
    at org.netbeans.modules.form.project.ClassPathUtils.loadClass(ClassPathUtils.java:114)
    at org.netbeans.modules.form.FormUtils.loadClass(FormUtils.java:1474)
    at org.netbeans.modules.form.PersistenceObjectRegistry.loadClass(PersistenceObjectRegistry.java:98)
    at org.netbeans.modules.form.GandalfPersistenceManager.restoreComponent(GandalfPersistenceManager.java:718)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadComponent(GandalfPersistenceManager.java:994)
    at org.netbeans.modules.form.GandalfPersistenceManager.restoreComponent(GandalfPersistenceManager.java:850)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadComponent(GandalfPersistenceManager.java:994)
    at org.netbeans.modules.form.GandalfPersistenceManager.restoreComponent(GandalfPersistenceManager.java:850)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadComponent(GandalfPersistenceManager.java:994)
    at org.netbeans.modules.form.GandalfPersistenceManager.restoreComponent(GandalfPersistenceManager.java:850)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadComponent(GandalfPersistenceManager.java:994)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadForm(GandalfPersistenceManager.java:530)
    at org.netbeans.modules.form.GandalfPersistenceManager.loadForm(GandalfPersistenceManager.java:312)
    at org.netbeans.modules.form.FormEditor$2.run(FormEditor.java:348)
    at org.netbeans.modules.form.FormLAF$2.run(FormLAF.java:293)
    at org.openide.util.Mutex.doEventAccess(Mutex.java:1363)
    at org.openide.util.Mutex.readAccess(Mutex.java:322)
    at org.netbeans.modules.form.FormLAF.executeWithLookAndFeel(FormLAF.java:276)
    at org.netbeans.modules.form.FormEditor.loadFormData(FormEditor.java:345)
    at org.netbeans.modules.nbform.FormEditorSupport.loadOpeningForm(FormEditorSupport.java:462)
    at org.netbeans.modules.nbform.FormDesignerTC.loadForm(FormDesignerTC.java:279)
    at org.netbeans.modules.nbform.FormDesignerTC.access$300(FormDesignerTC.java:87)
    at org.netbeans.modules.nbform.FormDesignerTC$PreLoadTask$1.run(FormDesignerTC.java:268)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:727)
    at java.awt.EventQueue.access$200(EventQueue.java:103)
    at java.awt.EventQueue$3.run(EventQueue.java:688)
    at java.awt.EventQueue$3.run(EventQueue.java:686)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:697)
    at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

我在这里缺少什么？

最佳答案

好的。多谢你们。我发现了问题并解决了。

问题出在 Matisse 额外生成的代码中。重构并没有更改这两个自定义 JPanel 组件的类名称。我必须在 java 源和 .form 数据中手动修改它们。例如:GPanel -> bd.ac.du.bmpt.GPanel

关于java - NetBeans Matisse 中的表单加载错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/17527135/

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