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JSTL中fmt标签详解

 
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一:JSTL格式化标签又称为I18N标签库,主要用来编写国际化的WEB应用,使用此功能可以对一个特定的语言请求做出合适的处理。

<wbr><wbr><wbr><wbr>例如:中国内地用户将显示简体中文,台湾地区则显示繁体中文,使用I18N格式化标签库还可以格式化数字和日期,例如同一数字或日趋,在不同国家可能有不同的格式,使用I18N格式标签库可以将数字和日期格式为当地的格式。</wbr></wbr></wbr></wbr>

<wbr></wbr>

二:格式化标签

<wbr><wbr><wbr>&lt;fmt:fromatNumber&gt;</wbr></wbr></wbr>

<wbr><wbr><wbr>&lt;fmt:formatDate&gt;</wbr></wbr></wbr>

<wbr><wbr><wbr>&lt;fmt:parseDate&gt;</wbr></wbr></wbr>

<wbr><wbr><wbr>&lt;fmt:parseNumber&gt;</wbr></wbr></wbr>

<wbr><wbr><wbr>&lt;fmt:setTimeZone&gt;</wbr></wbr></wbr>

<wbr><wbr><wbr>&lt;fmt:timeZone&gt;</wbr></wbr></wbr>

<wbr><wbr><wbr> 国际化标签</wbr></wbr></wbr>

<wbr><wbr><wbr>&lt;fmt:setLocale&gt;</wbr></wbr></wbr>

<wbr><wbr><wbr>&lt;fmt:requestEncoding&gt;</wbr></wbr></wbr>

<wbr><wbr><wbr>&lt;fmt:bundle&gt;</wbr></wbr></wbr>

<wbr><wbr><wbr>&lt;fmt:message&gt;</wbr></wbr></wbr>

<wbr><wbr><wbr>&lt;fmt:param&gt;</wbr></wbr></wbr>

<wbr><wbr><wbr>&lt;fmt:setBundle&gt;</wbr></wbr></wbr>

<wbr><wbr><wbr>在JSP页面中要使用到格式化标签,需要引入下面的语句:</wbr></wbr></wbr>

<wbr><wbr><wbr>&lt;%@ taglib uri="<a href="http://java.sun.com/jsp/jstl/fmt">http://java.sun.com/jsp/jstl/fmt</a>"prefix="fmt"% &gt;</wbr></wbr></wbr>

<wbr></wbr>

三:<fmt:formatNumber>

<wbr><wbr><wbr>此标签会根据区域定制的方式将数字格式化成数字,货币,百分比。</wbr></wbr></wbr>

<wbr><wbr><wbr>此标签的属性:</wbr></wbr></wbr>

<wbr><wbr><wbr>value:要格式化的数字</wbr></wbr></wbr>

<wbr><wbr><wbr>type:按照什么类型格式化</wbr></wbr></wbr>

<wbr><wbr><wbr>pattern:自定义格式化样式</wbr></wbr></wbr>

<wbr><wbr><wbr>currencyCode:ISO-4721货币代码,只适用于按照货币格式化的数字</wbr></wbr></wbr>

<wbr><wbr><wbr>currencySymbol: 货币符号,如¥,只适用于按照货币格式化的数字<br><wbr><wbr><wbr>groupingUsed: 是否包含分隔符<br><wbr><wbr><wbr>maxIntegerDigits: 整数部分最多显示多少位<br><wbr><wbr><wbr>mixIntegerDigits: 整数部分最少显示多少位<br><wbr><wbr><wbr>maxFractionDigits: 小数部分最多显示多位位<br><wbr><wbr><wbr>minFractionDigits: 小数部分最少显示多位位<br><wbr><wbr><wbr>var:存储格式化后的结果<br><wbr><wbr><wbr> scope:存储的范围</wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>

<wbr><wbr><wbr>示例1:<wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr>

Java代码
<%@ page language="java"pageEncoding="utf-8"%><wbr><wbr><br> &lt;%@ taglib uri="<a href="http://java.sun.com/jsp/jstl/core">http://java.sun.com/jsp/jstl/core</a>"prefix="c"%&gt;<wbr><wbr><br> &lt;%@ taglib uri="<a href="http://java.sun.com/jsp/jstl/fmt">http://java.sun.com/jsp/jstl/fmt</a>"prefix="fmt"%&gt;<wbr><wbr><br> &lt;!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01Transitional//EN"&gt;<wbr><wbr><br> &lt;html&gt;<wbr><wbr><br><wbr><wbr><wbr>&lt;head&gt;<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;title&gt;chapter4.jsp&lt;/title&gt;<wbr><wbr><br><wbr><wbr><wbr>&lt;/head&gt;<wbr><wbr><br><wbr><wbr><wbr>&lt;body&gt;<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;div&gt;<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;div&gt;<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;fmt:setLocalevalue="fr_fr"/&gt;<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;fmt:formatNumbervalue="123456789.012"/&gt;<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;br/&gt;<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;fmt:setLocalevalue="zh_cn"/&gt;<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;fmt:formatNumbervalue="123456789.012"/&gt;<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;br/&gt;<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;fmt:setLocalevalue="de_de"/&gt;<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;fmt:formatNumbervalue="123456789.012"/&gt;<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;br/&gt;<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;/div&gt;<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;/div&gt;<wbr><wbr><br></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>

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