由于 ViewExpiredException,从 CustomExceptionHandler 导航后显示部分响应 xml

partial-response xml displayed after navigation from CustomExceptionHandler due to ViewExpiredException

您好,我正在使用 Primefaces 4.0 开发一个 JSF 2.2.4 项目

我正在尝试使用以下步骤复制 ViewExpiredException。

-进入浏览器登录应用程序

-打开另一个选项卡,单击 p:menuitem(例如会计屏幕)

-重新启动服务器(其中一个选项卡自动重定向到登录页面)

-再次登录应用程序,然后再次单击相同的 p:menuitem [突然浏览器显示部分响应 xml 而不是 jsf 页面]

XML 在浏览器上显示:

<partial-response>
  <redirect url="/myapplication/denied/viewexpiredpage.jsf"/>
</partial-response>

CustomExceptionHandler.java

public class CustomExceptionHandler extends ExceptionHandlerWrapper {

private Logger logger = LoggerFactory.getLogger(CustomExceptionHandler.class);

private ExceptionHandler wrapped;

CustomExceptionHandler(ExceptionHandler exception) {
    this.wrapped = exception;
}

@Override
public ExceptionHandler getWrapped() {
    return wrapped;
}

@Override
public void handle() throws FacesException {
    FacesContext fc = FacesContext.getCurrentInstance();
    Map<String, Object> requestMap = fc.getExternalContext().getRequestMap();
    NavigationHandler nav = fc.getApplication().getNavigationHandler();

    for (Iterator<ExceptionQueuedEvent> i = getUnhandledExceptionQueuedEvents().iterator(); i.hasNext();) {
        ExceptionQueuedEvent event = i.next();
        ExceptionQueuedEventContext context = (ExceptionQueuedEventContext) event.getSource();
        Throwable t = context.getException();

        try {
            if (t instanceof ViewExpiredException) {
                logger.error("Custom Exception Handler caught an error: " + t.getMessage());
                fc.setViewRoot(fc.getApplication().getViewHandler().createView(fc, "expiredpage"));
                nav.handleNavigation(fc, null, "expiredpage");
                fc.getPartialViewContext().setRenderAll(true);
                fc.renderResponse();
            }else{     
                logger.error("Custom Exception Handler caught an error: " + t.getMessage());
            }
        }finally{
            i.remove();
        }
    }
    // At this point, the queue will not contain any ViewExpiredEvents.
    // Therefore, let the parent handle them.
    getWrapped().handle();
}
}

人脸-config.xml

<factory>
    <exception-handler-factory>
        com.pemc.crss.web.commons.exceptionhandler.CustomExceptionHandlerFactory
    </exception-handler-factory>
</factory>

<navigation-rule>
    <from-view-id>*</from-view-id>
    <navigation-case>
        <from-outcome>expiredpage</from-outcome>
        <to-view-id>/denied/viewexpiredpage.jsf</to-view-id>
        <redirect />
    </navigation-case>
</navigation-rule>

ViewExpiredException 已在异常处理程序中捕获,部分响应中的 url 似乎是正确的,但出于某些奇怪的原因,为什么它显示部分响应 xml 而不是实际的 jsf 错误页面?

如果您能帮助阐明这个问题,我们将不胜感激。谢谢!

ViewHandler#createView() 不接受导航案例("expiredpage" 你在那里)。您应该拥有的是实际的视图 ID 或错误页面的相对路径:

fc.getApplication().getViewHandler().createView(fc, "/myapplication/denied/viewexpiredpage.jsf");