因爲我正在關注如何正確使用UriFragmentUtility
這個vaadin:https://vaadin.com/book/-/page/advanced.urifu.html教程,我最終創建了該對象,並在嘗試將此組件添加到我的主窗口後失敗,並出現以下異常:UriFragmentUtility導致servlet異常
SEVERE: Servlet.service() for servlet [Dugsi_Manager Vaadin Application Servlet] in context with path [/Dugsi_Manager] threw exception [java.lang.UnsupportedOperationException] with root cause
java.lang.UnsupportedOperationException
com.vaadin.ui.CustomComponent.addComponent(CustomComponent.java:218)
com.vaadin.ui.Panel.addComponent(Panel.java:301)
com.vaadin.ui.Window.addComponent(Window.java:281)
org.bixin.dugsi.web.DugsiManagerApplication.init(DugsiManagerApplication.java:44)
com.vaadin.Application.start(Application.java:554)
com.vaadin.terminal.gwt.server.AbstractApplicationServlet.startApplication(AbstractApplicationServlet.java:1213)
com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:484)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:359)
org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:275)
org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:344)
org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:272)
org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:81)
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
這裏是我添加的對象到我的主應用程序類:
//Thread Local to create instances of our application
private static ThreadLocal<DugsiManagerApplication> threadLocal = new ThreadLocal<DugsiManagerApplication>();
@Override
public void init() {
setInstance(this); // immediate access to the app
//Window homeWindow = createNewWindow();
Subject currentUser = SecurityUtils.getSubject();
// Create the URI fragment utility
Window window = createLoginWindow();
setMainWindow(window);
final UriFragmentUtility urifu = new UriFragmentUtility();
window.addComponent(urifu);
}
在它談論的URI初級部分(地址+路徑+可選的查詢參數)的教程,我的路徑設置as/Du gsi_Manager(web.xml)是否應該在將urifu
對象作爲https://localhost:8080/Dugsi_Manger#login
添加後啓動?
編輯:增加了登錄窗口的聲明:
public Window createLoginWindow(){
final Window loginWindow = new LoginWindow();
//remove the window if closed to avoid memory leaks
loginWindow.addListener(new CloseListener() {
@Override
public void windowClose(CloseEvent e) {
if (getMainWindow() != loginWindow) {
DugsiManagerApplication.this.removeWindow(loginWindow);
}
}
});
return loginWindow;
}
\ **這似乎爲UriFragmentUtility
對象可以被添加到一個標準的Vaadin窗口,但我createLoginWindow
函數創建的窗口上不起作用?我無法弄清楚爲什麼?
我嘗試添加該UriFragmentUtility來調用起始窗口中的自定義組件的佈局,但它並沒有影響。它似乎不像我使用createLoginWindow()函數創建窗口的方式。如果我使用標準vaadin.ui.Window類創建窗口,它工作正常。我已添加編輯以顯示我如何創建我的LoginWindow類 – Warz