如何解决自定义 JSF ExceptionHandler 不起作用
我有一个带有 PrimeFaces 的 JSF 应用程序。我的应用在 WildFly 上运行
如果会话过期,我必须将用户重定向到登录页面。我写了一个 CustomExceptionHandler:
ExceptionHandlerFactory:
public class ExceptionHandlerFactory extends javax.faces.context.ExceptionHandlerFactory {
private javax.faces.context.ExceptionHandlerFactory parent;
public ExceptionHandlerFactory(javax.faces.context.ExceptionHandlerFactory parent) {
this.parent = parent;
}
@Override
public ExceptionHandler getExceptionHandler() {
ExceptionHandler result = parent.getExceptionHandler();
result = new CustomExceptionHandler(result);
return result;
}
}
ExceptionHandlerWrapper:
class CustomExceptionHandler extends ExceptionHandlerWrapper {
private ExceptionHandler parent;
public CustomExceptionHandler(ExceptionHandler parent) {
this.parent = parent;
}
@Override
public ExceptionHandler getWrapped() {
return this.parent;
}
@Override
public void handle() throws FacesException {
for (Iterator<ExceptionQueuedEvent> i = getUnhandledExceptionQueuedEvents().iterator(); i.hasNext();) {
ExceptionQueuedEvent event = i.next();
System.out.println("Iterating over ExceptionQueuedEvents. Current:" + event.toString());
ExceptionQueuedEventContext context = (ExceptionQueuedEventContext) event.getSource();
Throwable t = context.getException();
if (t instanceof ViewExpiredException) {
ViewExpiredException vee = (ViewExpiredException) t;
FacesContext fc = FacesContext.getCurrentInstance();
NavigationHandler nav =
fc.getApplication().getNavigationHandler();
try {
// Push some useful stuff to the flash scope for
// use in the page
fc.getExternalContext().getFlash().put("expiredViewId",vee.getViewId());
nav.handleNavigation(fc,null,"/index.xhtml");
fc.renderResponse();
} finally {
i.remove();
}
}
}
// At this point,the queue will not contain any ViewExpiredEvents.
// Therefore,let the parent handle them.
getWrapped().handle();
}
}
faces-config.xml:
...
<factory>
<exception-handler-factory>
hu.****.**.fe.exception.ExceptionHandlerFactory
</exception-handler-factory>
</factory>
...
<partial-response>
<changes>
<update id="javax.faces.ViewRoot">
<html***the content of the index.xhtml (login page)</html>
</update>
<update id="j_id1:javax.faces.ViewState:0">-2214895618242088710:6470920362668814776</update>
</changes>
</partial-response>
请帮忙,代码有什么问题。
版权声明:本文内容由互联网用户自发贡献,该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容, 请发送邮件至 dio@foxmail.com 举报,一经查实,本站将立刻删除。