Please make sure you have read the Tag Syntax document and understand how tag attribute syntax works.
Render field errors if they exists. Specific layout depends on the particular theme. The field error strings will be html escaped by default.
{% remote_file_content https://raw.githubusercontent.com/apache/struts/master/core/src/site/resources/tags/fielderror-description.html %}
{% remote_file_content https://raw.githubusercontent.com/apache/struts/master/core/src/site/resources/tags/fielderror-attributes.html %}
Example 1: display all field errors
<s:fielderror />
Example 2: display field errors only for field1 and field2
<s:fielderror> <s:param>field1</s:param> <s:param>field2</s:param> </s:fielderror> <s:form .... > .... </s:form>
or
<s:fielderror> <s:param value="%{'field1'}" /> <s:param value="%{'field2'}" /> </s:fielderror> <s:form .... > .... </s:form>
or
<s:fielderror fieldName="field1" /> <s:fielderror fieldName="field1" />