formatNumber
目的 Purpose
Formats a number using the patterns defined by the DecimalFormat class. Also supports attributes used in the JSTL formatNumber tag.使用例 Examples
<g:formatNumber number="${myNumber}" format="\\$###,##0" /><g:formatNumber number="${myCurrencyAmount}" type="currency" currencyCode="EUR" /><g:formatNumber number="${myCurrencyAmount}" type="currency" currencyCode="USD" /><g:formatNumber number="${myNumber}" type="number" minIntegerDigits="9" /><g:formatNumber number="${myNumber}" type="number" maxFractionDigits="2" /><g:formatNumber number="${myNumber}" type="number"
maxFractionDigits="2" roundingMode="HALF_DOWN" />詳細 Description
属性 Attributes
number(required) - The number object to formateformat(optional) - The formatting pattern to use for the number, see DecimalFormatformatName(optional) - Look upformatfrom the default MessageSource / ResourceBundle (i18n/.properties file) with this key. Look upformatfrom the default MessageSource / ResourceBundle (i18n/.properties file) with this key. IfformatandformatNameare empty,formatis looked up with 'default.number.format' key. If the key is missing, '0' formatting pattern is used.type(optional) - The type of formatter to use: 'number', 'currency' or 'percent' .formatorformatNamearen't used whentypeis specified.locale(optional) - Override the locale of the request , String or Locale valuegroupingUsed(optional) - Set whether grouping will be used in this format.minIntegerDigits(optional) - Sets the minimum number of digits allowed in the integer portion of a number.maxIntegerDigits(optional) - Sets the maximum number of digits allowed in the integer portion of a number.minFractionDigits(optional) - Sets the minimum number of digits allowed in the fraction portion of a number.maxFractionDigits(optional) - Sets the maximum number of digits allowed in the fraction portion of a number.currencyCode(optional) - The standard currency code ('EUR', 'USD', etc.), uses formatting settings for the currency. type='currency' attribute is recommended.currencySymbol(optional) - Force the currency symbol to some symbol, recommended way is to usecurrencyCodeattribute instead (takes symbol information from Currency)roundingMode(optional) - Sets the RoundingMode used in this DecimalFormat. Usual values:HALF_UP,HALF_DOWN. If roundingMode isUNNECESSARYand anArithemeticExceptionoccurs, the original number formatted with default number formatting will be returned.