一般用途的标签
<%@ page language="java" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>一般用途的标签</title>
</head>
<body>
<c:out value="${username }" default="wangzs"></c:out>
<br />
<c:set var="user" value="wangmm"></c:set>
${user }
<br />
<c:remove var="user" />
user的值： ${user }
<br />
<c:catch var="异常的名字">
</c:catch>
<br>
</body>
</html>
条件标签、格式化标签
<%@page import="java.util.*"%>
<%@page import="com.wzs.bean.Person"%>
<%@ page language="java" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>条件标签、格式化标签</title>
<%
request.setAttribute("name", "wangzs");
Map map = new HashMap();
map.put("1", "a");
map.put("2", "b");
map.put("3", "c");
map.put("4", "d");
request.setAttribute("map", map);
Person person1 = new Person(1, "wangzs");
Person person2 = new Person(2, "wangmm");
List list = new ArrayList();
list.add(person1);
list.add(person2);
request.setAttribute("list", list);
%>
</head>
<body>
------条件标签-------
<c:if test="${name=='wangzs' }" var="result">
名字叫wangzs | ${result }
</c:if>
<br />
<c:choose>
<c:when test="${name == 'admin' }">欢迎admin</c:when>
<c:when test="${name == 'wangzs' }">欢迎wangzs</c:when>
<c:otherwise>欢迎用户哦！</c:otherwise>
</c:choose>
<br />
<c:forEach var="temp" items="${map }">
${temp.key }|${temp.value }<br />
</c:forEach>
<br />
<c:forEach var="person" items="${list }">
用户id:${person.id } | username:${person.name }<br />
</c:forEach>
<br />
<c:forEach var="i" begin="5" end="15" step="2">
${i } :
</c:forEach>
<br />
<c:forTokens items="wang#zheng#12#ab#中国#美国#999" delims="#" var="temp">
${temp } |
</c:forTokens>
<br /> ------格式化标签-------
<!-- 格式化数字：整数最少2位。小数最少1位最多2位，每三个数字一组用,分开 -->
<br />
<fmt:formatNumber value="123456.7891" pattern="#,#00.0#"></fmt:formatNumber>
<br />
<!-- 已经格式化的字符串转换为数字 -->
<fmt:parseNumber value="123,456.7891" type="number"></fmt:parseNumber>
<br />
<fmt:formatDate value="<%=new java.util.Date() %>" type="date" />
|
<fmt:formatDate value="<%=new java.util.Date() %>" type="time" />
|
<fmt:formatDate value="<%=new java.util.Date() %>" type="both" />
|
<br />
<fmt:parseDate value="2014-5-18 23:02:25" type="both"></fmt:parseDate>
</body>
</html>
functions标签库
<%@ page language="java" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>functions标签库</title>
</head>
<body>
Functions标签库是在JSTL中定义的标准的el函数集
<br /> ${fn:contains("WANGzsABCdefg","wangzs") }
<br /> ${fn:containsIgnoreCase("WANGzsABCdefg","wangzs") }
<br /> ${fn:startsWith("WANGzsABCdefg","王") }
<br /> ${fn:endsWith("WANGzsABCdefg","fg") }
<br /> WANGzsABCdefg中zs在： ${fn:indexOf("WANGzsABCdefg","zs") }
<br /> ${fn:replace("WANGzsABCdefg","WANGzs","XXXX") }
<br />WANGzsABCdefg,3和6之间:${fn:substring("WANGzsABCdefg",3,6) }
<br />WANGzsABCdefg中Cd之前的字符：${fn:substringBefore("WANGzsABCdefg","Cd") }
<br />WANGzsABCdefg中zsA之后的字符:${fn:substringAfter("WANGzsABCdefg","zsA") }
<br />
<c:set var="welcom" value="${fn:split('welcom-to-bei-jing-!','-') }"></c:set>
<c:forEach var="token" items="${welcom }">
${token }
</c:forEach>
<br />fn:join使用方法: ${fn:join(welcom,"#") }
<br />
<c:forEach var="token" items="${welcom }">
${token }
</c:forEach>
<br />${fn:toLowerCase("WANGzsABCdefg") }
<br />${fn:toUpperCase("WANGzsABCdefg") }
<br />去掉字符串前后的字符:${fn:trim(" wangzs ") }ok
<br />${fn:length("wangzs") } | ${fn:length("1236") }
</body>
</html>