Suppress empty parameters using param tag

Question

I have written JSP that I used with many actions. It has a link with parameters

The link:

Answer 1

Well that line <s:param name="suppressEmptyParameters" value="true"/> doesn't make sense, and it should be removed from the <s:param> docs.

The <s:param name="type" value="%{type}" suppressEmptyParameters="true"/> is correct way of suppressing empty parameters and it isn't working with not String-s because of the bug WW-4275.

Meanwhile, until the next version is released, you can use toString() method to avoid ClassCastException exception.

<s:param name="type" value="type.toString()" suppressEmptyParameters="true"/>