com.sun.faces.enableRestoreView11Compatibility在JSF 1.2中使用的是什么 [英] com.sun.faces.enableRestoreView11Compatibility what use instead in JSF 1.2

问题描述

当我有javax.faces.application.ViewExpiredException时我想将用户发送到登录页面。

When I have javax.faces.application.ViewExpiredException I want to send user to login page.

web.xml

...
    <context-param>
        <param-name>com.sun.faces.enableRestoreView11Compatibility</param-name>
        <param-value>true</param-value>
    </context-param>
...
 <error-page>
    <exception-type>javax.faces.application.ViewExpiredException</exception-type>
    <location>/errors/sessionExpired.jsf</location>
 </error-page>

sessionExpired.jsf

sessionExpired.jsf

....
<c:redirect url="/index.jsf" />

但是enableRestoreView11Compatibility是JSF 1.1中使用的方法，什么是JSF 1.2的解决方案？

but enableRestoreView11Compatibility is method that was used in JSF 1.1, what is solution for JSF 1.2?

推荐答案

com.sun.faces.enableRestoreView11Compatibility 是一个JSF 1.2设置告诉JSF 1.2表现得像JSF 1.1。

com.sun.faces.enableRestoreView11Compatibility is a JSF 1.2 setting that tells JSF 1.2 to behave like JSF 1.1.

com.sun.faces.enableRestoreView11Compatibility == true 表示不要抛出 ViewExpiredException ;相反，如果旧视图已过期，只需创建一个新视图。

com.sun.faces.enableRestoreView11Compatibility == true means "do not throw a ViewExpiredException; instead, just create a new view if the old one has expired."

IBM说明：

这可能会产生不利行为，因为它是一个新视图，通常在视图中的项目（如州）不再存在。

This can have adverse behaviors because it is a new view, and items that are usually in the view, such as state, are no longer be there.

默认的JSF 1.2行为在中定义规范如下：

The default JSF 1.2 behaviour is defined in the spec as this:

如果请求是回发，请调用 ViewHandler.restoreView（），传递 FacesContext 当前请求和视图标识符的实例，并为恢复的视图返回 UIViewRoot 。如果从 ViewHandler.restoreView（）返回的值为null，则抛出一个 ViewExpiredException ，并显示相应的错误消息。 javax.faces.application.ViewExpiredException 是一个 FacesException`，必须抛出该信号以向应用程序发出信号，表明未为视图标识符返回预期的视图。应用程序可以选择基于此异常执行某些操作。

If the request is a postback, call ViewHandler.restoreView(), passing the FacesContext instance for the current request and the view identifier, and returning a UIViewRoot for the restored view. If the return from ViewHandler.restoreView() is null, throw a ViewExpiredException with an appropriate error message. javax.faces.application.ViewExpiredExceptionis aFacesException` that must be thrown to signal to the application that the expected view was not returned for the view identifier. An application may choose to perform some action based on this exception.

要有 ViewExpiredException 在视图过期时抛出，删除 com.sun.faces.enableRestoreView11Compatibility 参数或将其设置为 false 。

To have a ViewExpiredException thrown when the view expires, remove the com.sun.faces.enableRestoreView11Compatibility parameter or set it to false.

com.sun namespace表示该参数是Sun / Mojarra和派生的特定于实现的设置，因此它可能不适用于所有JSF实现。

The com.sun namespace suggests that the parameter is a Sun/Mojarra and derived implementation-specific setting, so it probably will not work with all JSF implementations.

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