我有两个类 DocumentManagertwoApplication.java 和 DocumentEditor.java （代码如下）。当我点击“编辑”按钮时，我需要一些帮助来解决我得到的这个错误
com.vaadin.event.ListenerMethod$MethodException：在 com.example.documentmanagertwo.DocumentmanagertwoApplication$1 中调用方法 buttonClick 失败。在 com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:532) 在 com.vaadin.event.EventRouter.fireEvent(EventRouter.java:164) 在 com.vaadin.ui.AbstractComponent.fireEvent(AbstractComponent.java:1219 ) at com.vaadin.ui.Button.fireClick(Button.java:550) at com.vaadin.ui.Button.changeVariables(Button.java:217) at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.changeVariables( AbstractCommunicationManager.java:1455) 在 com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVariableBurst(AbstractCommunicationManager.java:1399) 在 com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVariables(AbstractCommunicationManager.handleVariables)
///////////////////////////////////////// ////////////////////////////////// DocumentManager两个应用代码如下：
FilesystemContainer docs = new FilesystemContainer (new File("C:\\Users\\MYRA\\Desktop\\Docx4java\\docs"));
Table selector = new Table (null, docs);
Label viewer = new Label ("Select a doc", Label.CONTENT_RAW);
Button edit = new Button ("edit");
@Override
public void init() {
final Window mainWindow = new Window("Documentmanagertwo Application", new VerticalSplitPanel());
VerticalLayout lo = new VerticalLayout();
Label label = new Label("Hello Vaadin user");
mainWindow.addComponent(label);
mainWindow.addComponent(selector);
lo.addComponent(viewer);
lo.addComponent(edit);
mainWindow.addComponent(lo);
setMainWindow(mainWindow);
edit.addListener(new Button.ClickListener (){
private static final long serialVersionUID = -3024072268109652498L;
public void buttonClick(ClickEvent event ) {
Window dialog = new Window ("Edit Selected",
new DocumentEditor(viewer.getPropertyDataSource()));
dialog.setModal(true);
mainWindow.addWindow (dialog);
}
});
selector.setImmediate(true);
selector.setSizeFull();
selector.setSelectable(true);
selector.addListener(new Property.ValueChangeListener() {
/**
*
*/
private static final long serialVersionUID = 1L;
public void valueChange(ValueChangeEvent event) {
viewer.setPropertyDataSource(new TextFileProperty((File) selector.getValue()));
}
});
}
}
///////////////////////////////////////// /////////////////////////////////DocumentEditor.java 代码如下：//// ///////////////////////////////////////// //////////////////////////
@AutoGenerated
private AbsoluteLayout mainLayout;
@AutoGenerated
private Button button_1;
@AutoGenerated
private RichTextArea richTextArea_1;
/*- VaadinEditorProperties={"grid":"RegularGrid,20","showGrid":true,"snapToGrid":true,"snapToObject":true,"movingGuides":false,"snappingDistance":10} */
/*- VaadinEditorProperties={"grid":"RegularGrid,20","showGrid":true,"snapToGrid":true,"snapToObject":true,"movingGuides":false,"snappingDistance":10} */
/**
*
*/
private static final long serialVersionUID = 2788446877665474591L;
/**
* The constructor should first build the main layout, set the
* composition root and then do any custom initialization.
*
* The constructor will not be automatically regenerated by the
* visual editor.
*/
public DocumentEditor(Property document) {
buildMainLayout();
setCompositionRoot(mainLayout);
// TODO add user code here
richTextArea_1.setPropertyDataSource(document);
richTextArea_1.setWriteThrough(false);
button_1.addListener(new Button.ClickListener() {
private static final long serialVersionUID = 1L;
public void buttonClick(ClickEvent event ) {
richTextArea_1.commit();
getApplication().getMainWindow().removeWindow(getWindow());
}
});
}
@AutoGenerated
private AbsoluteLayout buildMainLayout() {
// common part: create layout
mainLayout = new AbsoluteLayout();
mainLayout.setImmediate(false);
mainLayout.setWidth("100%");
mainLayout.setHeight("100%");
mainLayout.setMargin(false);
// top-level component properties
setWidth("100.0%");
setHeight("100.0%");
// richTextArea_1
richTextArea_1 = new RichTextArea();
richTextArea_1.setImmediate(false);
richTextArea_1.setWidth("572px");
richTextArea_1.setHeight("360px");
mainLayout.addComponent(richTextArea_1, "top:0.0px;left:-2.0px;");
// button_1
button_1 = new Button();
button_1.setCaption("Save");
button_1.setImmediate(false);
button_1.setWidth("-1px");
button_1.setHeight("-1px");
mainLayout.addComponent(button_1, "top:360.0px;left:500.0px;");
return mainLayout;
}
}