Mar*_*ada 44 ajax session-timeout primefaces jsf-2 viewexpiredexception
我发现这篇文章对非ajax请求有用如何在JSF 2中处理会话过期和ViewExpiredException? 但是当我使用AJAX调用提交时,我无法使用它.
假设在一个primefaces对话框中,我正在使用AJAX发布一个post请求,session已经超时了.我看到我的页面卡住了.
如何解决这种情况的,这样当我POST使用AJAX,我可以重定向他对我的看法过期的页面,然后转发他类似于上面的链接解决方案登录页面?
JSF2/Primefaces/Glassfish的
Bal*_*usC 47
在ajax请求期间抛出的异常默认情况下在客户端完全没有反馈.只有当您运行Mojarra并将项目阶段设置为Development
并使用时<f:ajax>
,您才会获得带有异常类型和消息的简单JavaScript警报.但除此之外,在PrimeFaces中,默认情况下根本没有反馈.但是,您可以在服务器日志和ajax响应中看到异常(在webbrowser的开发人员工具集的"网络"部分中).
ExceptionHandler
当ViewExpiredException
队列中有a时,你需要实现一个基本上完成以下工作的自定义:
String errorPageLocation = "/WEB-INF/errorpages/expired.xhtml";
context.setViewRoot(context.getApplication().getViewHandler().createView(context, errorPageLocation));
context.getPartialViewContext().setRenderAll(true);
context.renderResponse();
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或者,您可以使用JSF实用程序库OmniFaces.它有一个FullAjaxExceptionHandler
出于这样的目的(源代码在这里,展示演示在这里).
Dou*_*ior 18
@BalusC和这篇文章的答案合并,我解决了我的问题!
我的ExceptionHandlerWrapper:
public class CustomExceptionHandler extends ExceptionHandlerWrapper {
private ExceptionHandler wrapped;
CustomExceptionHandler(ExceptionHandler exception) {
this.wrapped = exception;
}
@Override
public ExceptionHandler getWrapped() {
return wrapped;
}
@Override
public void handle() throws FacesException {
final Iterator<ExceptionQueuedEvent> i = getUnhandledExceptionQueuedEvents().iterator();
while (i.hasNext()) {
ExceptionQueuedEvent event = i.next();
ExceptionQueuedEventContext context
= (ExceptionQueuedEventContext) event.getSource();
// get the exception from context
Throwable t = context.getException();
final FacesContext fc = FacesContext.getCurrentInstance();
final Map<String, Object> requestMap = fc.getExternalContext().getRequestMap();
final NavigationHandler nav = fc.getApplication().getNavigationHandler();
//here you do what ever you want with exception
try {
//log error ?
//log.log(Level.SEVERE, "Critical Exception!", t);
if (t instanceof ViewExpiredException) {
requestMap.put("javax.servlet.error.message", "Session expired, try again!");
String errorPageLocation = "/erro.xhtml";
fc.setViewRoot(fc.getApplication().getViewHandler().createView(fc, errorPageLocation));
fc.getPartialViewContext().setRenderAll(true);
fc.renderResponse();
} else {
//redirect error page
requestMap.put("javax.servlet.error.message", t.getMessage());
nav.handleNavigation(fc, null, "/erro.xhtml");
}
fc.renderResponse();
// remove the comment below if you want to report the error in a jsf error message
//JsfUtil.addErrorMessage(t.getMessage());
} finally {
//remove it from queue
i.remove();
}
}
//parent hanle
getWrapped().handle();
}
}
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我的ExceptionHandlerFactory:
public class CustomExceptionHandlerFactory extends ExceptionHandlerFactory {
private ExceptionHandlerFactory parent;
// this injection handles jsf
public CustomExceptionHandlerFactory(ExceptionHandlerFactory parent) {
this.parent = parent;
}
@Override
public ExceptionHandler getExceptionHandler() {
ExceptionHandler handler = new CustomExceptionHandler(parent.getExceptionHandler());
return handler;
}
}
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我的faces-config.xml
<?xml version='1.0' encoding='UTF-8'?>
<faces-config version="2.2"
xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-facesconfig_2_2.xsd">
<factory>
<exception-handler-factory>
your.package.here.CustomExceptionHandlerFactory
</exception-handler-factory>
</factory>
</faces-config>
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