试试这个：
Window appointmentWindow = getApplication().getWindow(NATIVE_WINDOW_NAME);if (appointmentWindow != null) { getApplication().removeWindow(appointmentWindow);}来源：https :
//vaadin.com/forum/#!/ thread/
235330
试试这个：
Window appointmentWindow = getApplication().getWindow(NATIVE_WINDOW_NAME);if (appointmentWindow != null) { getApplication().removeWindow(appointmentWindow);}来源：https :
//vaadin.com/forum/#!/ thread/
235330
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