在Struts 2.5中使用顶部对象 [英] Using top object in Struts 2.5

问题描述

根据 s2-026 :

在未来的Struts中将不再支持对使用top的表达的支持2.5版！

Support for expression using top will be dropped in upcoming Struts version 2.5!

我们在许多JSP页面中使用了 top 对象，如下所示(该对象显示了 currencyTypes 的列表，并从Struts中查找名称)消息):

We used the top object in lots of JSP pages as below (which shows a list of currencyTypes and look up the name from Struts messages):

<s:select name = "selectedCurrencyType" 
          list = "currencyTypes"
       listKey = "top" 
     listValue = "%{getText('acc.currencyType.'+top)}" />

它目前可与struts 2.3.24.1 一起使用，但根据上述评论，上面的选择框是否对 2.5 有效，否则我们将不再有顶级参考文献了?！

It currently works with struts 2.3.24.1 but according to above comment, will above select box works for 2.5, or we will not have the top reference any more?!

如果是这样，请告诉我该如何解决上述 s:select ?！

If this is true, please let me know how should we fix above s:select?!

推荐答案

添加了对 top 对象的支持以支持内部操作，用户不应该使用它(是的，在docs中表示是个坏主意:()

Support for top object was added to support internal operations, it shouldn't be used by users (yes, expressing that in docs was a bad idea :( )

无论如何，看来我们必须准备迁移路径或保持对 top 对象的支持.

Anyway, looks like we must prepare a migration path or keep support for the top object.

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