fmt:formatNumber use locale display negative currency in -$xxx.xx format in JSTL

最新推荐文章于 2025-08-20 15:04:37 发布

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最新推荐文章于 2025-08-20 15:04:37 发布

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文章标签： java

原文链接：http://www.cnblogs.com/molashaonian/p/7242022.html

本文介绍如何使用JSTL中的fmt:formatNumber标签来格式化数字为特定地区的货币格式，并提供了在美国和德国风格下显示的例子。同时展示了如何自定义模式以改变负数的显示方式。

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First, we want to know our own locale，how to display the locale in a JSTL?

<c:out value="${pageContext.request.locale.language}"/>

I'm confused with the jstl tag libs:

I want to format a number to a currency with german style

<%@page contentType="text/html" 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" %>
<html>
<head>
    <title>format number</title>
</head>
<body>
    <c:set var="val" value="40.52" />
    <p> Currency in USA
    <fmt:setLocale value="en_US" scope="session"/>

    <fmt:formatNumber value="${val}" type="currency" />
    </p>
    <p>Currency in Germany
    <fmt:setLocale value="de_DE" scope="session"/>

    <fmt:formatNumber value="${val}" type="currency"/>
    </p>
</body>
</html>

And thats the output:

Currency in USA $40.52
Currency in Germany 40,52 €

I am using fmt:formatNumber to format currency in JSTL, it will display negative currency in ($100) format, if you want to make it display negative currency in negative format instead of ($100).

I would suggest:

<fmt:formatNumber type="currency" pattern="$#,##0.00;-$#,##0.00" value="-10000" />

You can remove '$' from the pattern, if you like.

order example：