jsp C标签if else

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>

1. jsp中传递参数，经过action，存储到request中

<area shape="poly" coords="680,111,765,82,811,196,724,223"

href="${pageContext.request.contextPath}/news/queryNews.do?artType=9&new=3" alt="摄影" title="摄影" />

2. java代码中有

String newFlag=request.getParameter("newFlag");
  if(newFlag!=null && !newFlag.equals("")){
   request.setAttribute("newFlag",newFlag);
  }

3. jsp中的类似 if - else 语句的语法

<c:choose>
   <c:when test="${requestScope.newFlag== '1' || requestScope.newFlag== '2' ||requestScope.newFlag== '3'}">
         作品名称: ${star.class_}<br />
         作品编号: ${star.raceNum}<br />
   </c:when>
   <c:otherwise>
     班级: ${star.class_}<br />
     参赛编号: ${star.raceNum}<br />
   </c:otherwise>
</c:choose>