ognl'in'语句未按预期运行

Question

I have the following code:

<s:iterator value="primaryDataSources" var="includedPrimaryDataSource">
    <s:property value="%{includedPrimaryDataSource in primaryDataSources}"/>
</s:iterator>

with primaryDataSources being an ArrayList initialised in my action class:

List<String> primaryDataSources = new ArrayList<String>(Arrays.asList(new String[]{"SE", "QBP", "Olympic", "J&B"}));

When I output primaryDataSources on its own like this:

 <s:property value="%{primaryDataSources}"/>

it outputs [SE, QBP, Olympic, J&B]

I would expect that the 'in' ognl statement would always return true, however it is always false... Any idea what I'm doing wrong?

Answer 1

You are missing # to reference your includedPrimaryDataSource , also %{...} is not needed inside <s:property> tag.

<s:iterator value="primaryDataSources" var="includedPrimaryDataSource">
    <s:property value="#includedPrimaryDataSource in primaryDataSources"/>
</s:iterator>