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JSP中使用JSTL按不同条件输出内容的方法

本文实例讲述了JSP中使用JSTL按不同条件输出内容的方法 。分享给大家供大家参考 。具体如下：

ConditionalContentJSTL.jsp页面：

<%@ page language="java" contentType="text/html;charset=UTF-8" %>
<%@ taglib uri="/WEB-INF/tld/c-rt.tld" prefix="c-rt" %>
<html>
<head>
 <title>Java Code Geeks Snippets - Conditional Content with JSTL in JSP Page</title>
</head>
<body>
 <%-- if condition --%>
 <c-rt:if test=${param.myparam1 == "myvalue1"}>
  This is printed if parameter "myparam1" equals "myvalue1" </br>
 </c-rt:if>
 <%-- if/else condition --%>
 <c-rt:choose>
  <c-rt:when test=${param.myparam2 == "myvalue2"}>
   This is printed if parameter "myparam2" equals "myvalue2" </br>
  </c-rt:when>
  <c-rt:otherwise>
   This is printed if parameter "myparam2" DOES NOT equal "myvalue2" </br>
  </c-rt:otherwise>
 </c-rt:choose>
 <%-- multiple conditions --%>
 <c-rt:choose>
  <c-rt:when test=${param.myparam3 == "0"}>
   This is printed if parameter "myparam1" equals 0 </br>
  </c-rt:when>
  <c-rt:when test=${param.myparam3 == "1"}>
   This is printed if parameter "myparam1" equals 1 </br>
  </c-rt:when>
  <c-rt:otherwise>
   This is printed for any other value of the parameter </br>
  </c-rt:otherwise>
 </c-rt:choose>
</body>

希望本文所述对大家的JSP程序设计有所帮助 。