More than one parameters in URL Struts2

Question

I wanted to pass more than one parameter for an action. but when i build the URL using Struts2, it builds with only one parameter. May i know what is went wrong in the below code?

<s:url action="loadValidLevelValueDropDown" id="levelvalueURL" escapeAmp="false">
  <s:param name="hierarchyId" value="searchAttribute.hierarchyId.id"></s:param>
  <s:param name="valuebycoulmn" value="refcolumnName%{#level.count}"></s:param>
</s:url>

result is,

/appname/loadValidLevelValueDropDown.action?hierarchyId=1

Answer 1

The value attribute of <s:param> tag takes OGNL expression as a value. Your refcolumnName%{#level.count} value is not a valid expression so parameter is not being appended to url.

If your refcolumnName is a collection than you can access it like that:

<s:param name="valuebycoulmn" value="refcolumnName[#level.count]" />

if it supposed to be a string than you need to append it like string:

<s:param name="valuebycoulmn" value="'refcolumnName' + #level.count" />