JSP中JSTL核心标签库的<c:choose>标签

shanxmxj · 发表于 2013-1-27 04:35:04

c:choose标签用来选择执行语句
当c:when的test中判断结果为true时执行该标签中的内容；
如果所有c:when的test中判断结果都为false，则执行c:otherwise中的内容；

格式如下：
<c:choose>
  <c:when test="testCondition">
Content1
  </c:when>
  <c:when test="testCondition">
Content2
  </c:when>
  <c:otherwise>
Content3
  </c:otherwise>
</c:choose>

testJSTLChoose.jsp:

程序代码

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>TestJSTLChoose</title></head><body> <form action="testJSTLChoose.jsp" method="post">       Please enter a name:<input type="text" name="name" />       <input type="submit" value="Submit" /> </form> <c:if test="${!empty param.name}">       <c:choose >          <c:when test="${param.name == 'magci' }">             Welcome goodman ${param.name }          </c:when>          <c:when test="${param.name == 'mgc' }">             Welcome ${param.name }          </c:when>          <c:otherwise>             ${param.name }          </c:otherwise>       </c:choose> </c:if></body></html>

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JSP中JSTL核心标签库的&lt;c:choose&gt;标签

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JSP中JSTL核心标签库的<c:choose>标签