JSTL 详解03
<fmt:formatNumber>
Syntax 1: without a body
<fmt:formatNumber value=”numericValue”
[type=”{number|currency|percent}”]
[pattern=”customPattern ”]
[currencyCode=”currencyCode” ]
[currencySymbol=”currencySymbol” ]
[groupingUsed=”{true|false}”]
[maxIntegerDigits=”maxIntegerDigits” ]
[minIntegerDigits=”minIntegerDigits” ]
[maxFractionDigits=”maxFractionDigits” ]
[minFractionDigits=”minFractionDigits” ]
[var=”varName ”]
[scope=”{page|request|session|application}”]/>
Syntax 2: with a body to specify the numeric value to be formatted
<fmt:formatNumber [type=”{number|currency|percent}”]
[pattern=”customPattern ”]
[currencyCode=”currencyCode” ]
[currencySymbol=”currencySymbol” ]
[groupingUsed=”{true|false}”]
[maxIntegerDigits=”maxIntegerDigits” ]
[minIntegerDigits=”minIntegerDigits” ]
[maxFractionDigits=”maxFractionDigits” ]
[minFractionDigits=”minFractionDigits” ]
[var=”varName ”]
[scope=”{page|request|session|application}”]>
numeric value to be formatted
</fmt:formatNumber>
参数说明：
Value ：要格式化的值
Type ：怎样进行格式化，如货币 (currency) ，百分比 (percent) ，数字 (number)
Pattern ：以怎样的格式进行格式化，可以自定义输出格式
currencySymbol ：当前货币符号，如￥， $
groupingUsed ：是否进行分组输出，会对数字三个一组进行输出
maxIntegerDigits ：整数位最大多数位
minIntegerDigits ：整数位最少多数位
maxFractionDigits ：小数位最多多少位
minFractionDigits ：小数位最少多少位
如：代码
- < body >
- < h1 > 测试jstl格式化库 </ h1 >
- < hr >
- < li > 测试日期的格式化 </ li > < br >
- today(default):< fmt:formatDate value = "${today}" /> < br >
- today(type = "date" ): < fmt:formatDate value = "${today}" type = "date" /> < br >
- today(type = "time" ): < fmt:formatDate value = "${today}" type = "time" /> < br >
- today(type = "both" ): < fmt:formatDate value = "${today}" type = "both" /> < br >
- today(dateStyle = "short" ): < fmt:formatDate value = "${today}" dateStyle = "short" /> < br >
- today(dateStyle = "medium" ): < fmt:formatDate value = "${today}" dateStyle = "medium" /> < br >
- today(dateStyle = "long" ): < fmt:formatDate value = "${today}" dateStyle = "long" /> < br >
- today(dateStyle = "full" ): < fmt:formatDate value = "${today}" dateStyle = "full" /> < br >
- today(pattern = "yyyy/MM/dd HH:mm:ss" ): < fmt:formatDate value = "${today}" pattern = "yyyy/MM/dd HH:mm:ss" /> < br >
- today(pattern = "yyyy/MM/dd HH:mm:ss" ): < fmt:formatDate value = "${today}" pattern = "yyyy/MM/dd HH:mm:ss" var = "d" /> < br >
- ${d }< br >
- < p >
- < li > 测试数字的格式化 </ li > < br >
- n(default):< fmt:formatNumber value = "${n}" /> < br >
- n(pattern = "###,###.##" ): < fmt:formatNumber value = "${n}" pattern = "###,###.##" /> < br >
- n(pattern = "###,###.0000" ): < fmt:formatNumber value = "${n}" pattern = "###,###.0000" /> < br >
- n(groupingUsed = "false" ): < fmt:formatNumber value = "${n}" groupingUsed = "false" /> < br >
- n(minIntegerDigits = "10" ): < fmt:formatNumber value = "${n}" minIntegerDigits = "10" /> < br >
- n(type = "currency" ): < fmt:formatNumber value = "${n}" type = "currency" /> < br >
- n(type = "currency" ): < fmt:formatNumber value = "${n}" type = "currency" currencySymbol = "$" /> < br >
- n(type = "percent" ): < fmt:formatNumber value = "${p}" type = "percent" maxFractionDigits = "2" minFractionDigits = "2" /> < br >
- </ body >
<body>
<h1>测试jstl格式化库</h1>
<hr>
<li>测试日期的格式化</li><br>
today(default):<fmt:formatDate value="${today}"/><br>
today(type="date"):<fmt:formatDate value="${today}" type="date"/><br>
today(type="time"):<fmt:formatDate value="${today}" type="time"/><br>
today(type="both"):<fmt:formatDate value="${today}" type="both"/><br>
today(dateStyle="short"):<fmt:formatDate value="${today}" dateStyle="short"/><br>
today(dateStyle="medium"):<fmt:formatDate value="${today}" dateStyle="medium"/><br>
today(dateStyle="long"):<fmt:formatDate value="${today}" dateStyle="long"/><br>
today(dateStyle="full"):<fmt:formatDate value="${today}" dateStyle="full"/><br>
today(pattern="yyyy/MM/dd HH:mm:ss"):<fmt:formatDate value="${today}" pattern="yyyy/MM/dd HH:mm:ss"/><br>
today(pattern="yyyy/MM/dd HH:mm:ss"):<fmt:formatDate value="${today}" pattern="yyyy/MM/dd HH:mm:ss" var="d"/><br>
${d }<br>
<p>
<li>测试数字的格式化</li><br>
n(default):<fmt:formatNumber value="${n}"/><br>
n(pattern="###,###.##"):<fmt:formatNumber value="${n}" pattern="###,###.##"/><br>
n(pattern="###,###.0000"):<fmt:formatNumber value="${n}" pattern="###,###.0000"/><br>
n(groupingUsed="false"):<fmt:formatNumber value="${n}" groupingUsed="false"/><br>
n(minIntegerDigits="10"):<fmt:formatNumber value="${n}" minIntegerDigits="10"/><br>
n(type="currency"):<fmt:formatNumber value="${n}" type="currency"/><br>
n(type="currency"):<fmt:formatNumber value="${n}" type="currency" currencySymbol="$"/><br>
n(type="percent"):<fmt:formatNumber value="${p}" type="percent" maxFractionDigits="2" minFractionDigits="2"/><br>
</body>
