我可以在不同的动作类之间传播 struts2 ActionErrors 吗? [英] Can I propagate struts2 ActionErrors between different action classes?

问题描述

如果我有一个操作，结果是重定向操作到不同类中的另一个操作，是否有可能在结果操作中显示验证错误?例如.在下面的示例中，如果用户执行 actionA(没有与之关联的视图)，并且出现错误，有没有办法在 actionB 结果 (foo.jsp) 中显示这些错误?还是我以完全错误的方式处理这个问题?

If I have an action where the result is a redirectAction to another action in a different class, is it possible to get validation errors to display in the resulting action? E.g. in the following example, if a user executes actionA (which has no views associated with it), and there are errors, is there any way to display those errors in the actionB result (foo.jsp)? Or am I going about this in completely the wrong way?

<package name="a" extends="struts-default" namespace="/a">
    <action name="actionA" class="actionAClass">
        <result name="input" type="redirectAction">
            <param name="actionName">actionB</param>
            <param name="namespace">/b</param>
        </result>
        <result type="redirectAction">
            <param name="actionName">actionB</param>
            <param name="namespace">/b</param>
        </result>
    </action>
</package>
<package name="b" extends="struts-default" namespace="/b">
    <action name="actionB" class="actionBClass">
        <result>/foo.jsp</result>
    </action>
</package>

推荐答案

可能有办法做到这一点，但我不认为这是使用 struts 的好方法.如果 actionA 验证失败，您很可能希望为它提供一个显示错误的非重定向输入结果，或者一个可以显示它的全局错误页面.

There may be a way to do that, but I don't think it's a very good way to use struts. If actionA is failing validation, you most likely would want to either have a non-redirect input result for it that shows the errors, or perhaps a global error page that can show it.

我想您可以将操作错误存储在重定向之间的会话之类的地方，但您不会真正使用框架的设计方式.

I suppose you could store the action errors somewhere like the session in between the redirect, but you wouldn't really be using the framework how it was designed.

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