我想從我的登錄視圖導航到另一個視圖...此過程是通過我寫的身份驗證方法。我能夠從登錄視圖到另一個,但是,當我刷新窗口時,我得到一個醜陋的異常,告訴我沒有我想訪問的這種視圖。我已經嘗試過2個UI。一個用於登錄,另一個用於其他任何事情,第一個我想通過setContent()
方法設置另一個UI,但是我給了我更加醜陋的例外,然後我發現它是被禁止的或類似的東西,所以我再次嘗試了它與意見和導航,但失敗。你可以幫我嗎?從我的用戶界面,將瀏覽器轉到該代碼..如何正確導航vaadin 7中的身份驗證視圖
navigator = new Navigator(this, this);
navigator.addView("",new LoginView());
的認證方法我稱之爲:
getUI().getNavigator().addView("kniznica", new LoggedInView());
getUI().getNavigator().navigateTo("kniznica");
到一個新的視圖添加到用戶界面,然後導航到它。
後,我刷新稱爲「kniznica」視圖中的例外:
java.lang.IllegalArgumentException: Trying to navigate to an unknown state 'kniznica' and an error view provider not present
at com.vaadin.navigator.Navigator.navigateTo(Navigator.java:525)
at com.vaadin.ui.UI.doInit(UI.java:534)
at com.vaadin.server.AbstractCommunicationManager.getBrowserDetailsUI(AbstractCommunicationManager.java:2468)
at com.vaadin.server.AbstractCommunicationManager.handleBrowserDetailsRequest(AbstractCommunicationManager.java:2362)
at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:325)
at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:201)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:722)
謝謝你的回答,我已經在這裏找到了有用的東西:[https://vaadin.com/wiki/-/wiki/Main/Creating%20a%20simple%20login%20view](https:// vaadin .COM /維基/ - /維基/主/創建%20A%20simple%20login%20view) – kalafun 2013-04-27 11:10:53