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Need to pass Javascript Array to Struts 2 Action

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I need to pass a Javascript Array full of data to my Struts 2 action. I'm currently doing this on submit by assigning the Array to a hidden field:

I have this sending through the value to a String array, but it appears in my action as a single element in the array with comma delimited values. My questions are:
Is there a better way to do this?
Is there a way to get an actual array passed through to my action?

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AFAIK there's no magic that will automatically convert a CSV string into an array.

There's no way to pass "an array": the ONLY thing that browsers send back to servers are strings. You could write a converter that makes it into an array (and donate it to the S2 project), but you'd have to specify the type in code or configs, so it might not be a general-purpose thing.

Another option is to create multiple hidden fields with the same name; S2 will gather those and set them on a collection property (maybe array too, but I don't know that for sure). If order is significant you'd need to name them appropriately, using array syntax notation for the field names.
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