The <fmt:formatNumber> action determines from the locale, for example, whether to use a period or a comma for delimiting the integer and decimal portions of a number. Here is its syntax

<fmt:formatNumber> 操作由语言环境确定，例如，使用句点还是使用逗号来定界数字的整数和小数部分。

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The decimal point may be represented, according to various conventions, by a comma, by a period, or by a point at the mid-height of the digits.

根据各种习惯，十进制小数点可用逗号、号或在数字符的半高位置上加上一个点来表示。

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Some cultures might use the comma character as the decimal delimiter instead of the period character.

有些区域性可能使用逗号作为小数分隔符，而不是使用句点作为小数分隔符。

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