Struts 去FieldErrror红点

<style type="text/css">.welcome {background-color:#DDFFDD;border:1px solid #009900;width:200px;}.welcome li{ list-style: none; }</style><s:if test="hasActionMessages()">   <div class="welcome">      <s:actionmessage/>   </div></s:if><style type="text/css">.errors {background-color:#FFCCCC;border:1px solid #CC0000;width:400px;margin-bottom:8px;}.errors li{ list-style: none; }</style><s:if test="hasActionErrors()">   <div class="errors">      <s:actionerror/>   </div></s:if>