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Using Struts2 with JSPs. The following code works fine:

<s:if test="foo == bar">
    <s:set var="keyValue">message.string1</s:set>
</s:if>
<s:else>
    <s:set var="keyValue">message.string2</s:set>
</s:else>

<s:text name="%{keyValue}"/>

i.e., based on the value of keyValue, message.string1 or message.string2 is looked up from the resource file and properly output to the resulting HTML page.

However, as explained at the bottom of the Struts tag documentation, for i18n in attribute values I can't use the Struts text tag, instead I have to use getText('...'):

<s:submit value="getText('message.string1')" ../>

Problem is, I can't get %{keyValue} resolved in the above getText() call, whatever syntax I try: getText('%{keyValue}'), getText(%{keyValue}), getText(keyValue), getText('keyValue') it ends up getting evaluated as null. Is this a syntax error on my part or it simply can't be done? If I have to, I know I can go back to using <s:if> and <s:else> with a submit tag under each:

<s:if test="foo == bar">
    <s:submit value="getText('message.string1')" ../>
</s:if>
<s:else>
    <s:submit value="getText('message.string2')" ../>
</s:else>

...but I'd like to avoid the duplication if possible.

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1 回答 1

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尽管 plainkeyValue在大多数情况下都可以使用，但最好在标签的var值前面加上. 你应该在整个表达式周围只使用一对。<s:set>#%{}

<s:submit value="%{getText(#keyValue)}" />
于 2016-06-17T18:45:40.217 回答