在jsp中声明临时变量 <c:set

<c:if test="${not empty patients}"><c:set var="flag" value="1" />
    <c:forEach var="patient" items="${patients}" varStatus="status">
    <tr>
     <td align="center">
      <c:choose>
       <c:when test="${patient.isStop == 1 || patient.isCancel == 1}">
        <input type="radio" name="patientID" value="${patient.id}" disabled/>
        <c:if test="${status.count == 1}">
         <c:set var="flag" value="0"/>
        </c:if>
       </c:when>
       
       <c:when test="${flag == 0}">
        <input type="radio" name="patientID" value="${patient.id}" checked="checked"/>
        <c:set var="flag" value="${status.count}"/>
       </c:when>
       <c:when test="${flag == 1}">
        <input type="radio" name="patientID" value="${patient.id}" checked="checked"/>
        <c:set var="flag" value="2"/>
        
       </c:when>
       <c:otherwise>
        <input type="radio" name="patientID" value="${patient.id}"/>
        <c:set var="flag" value="${status.count}"/>
       </c:otherwise>
      </c:choose>     
     </td>