Java货币格式化程序:强制使用货币符号格式化

Java货币格式化程序:强制使用货币符号格式化,java,currency,formatter,Java,Currency,Formatter,我使用spring货币格式化程序根据货币代码格式化值 public String format(Number number, String currencyCode) { CurrencyFormatter formatter = new CurrencyFormatter(); formatter.setCurrency(Currency.getInstance(currencyCode)); return formatter.print(number, Locale.

我使用spring货币格式化程序根据货币代码格式化值

public String format(Number number, String currencyCode)
{
    CurrencyFormatter formatter = new CurrencyFormatter();
    formatter.setCurrency(Currency.getInstance(currencyCode));
    return formatter.print(number, Locale.getDefault());        
}
因此,如果我将其称为format(10,“GBP”),那么无论语言环境如何,我都希望返回值为10.00英镑


这可能吗?

我对Spring不太熟悉,但问题似乎在于:
Locale.getDefault()
。相反,请尝试使用在
Locale
类上定义的一个静态实例。

无论何时显示货币,都需要两条信息:货币代码和显示结果的区域设置。例如,当您在en_US区域设置中显示USD时,您希望它显示$,但在en_AU区域设置中,您希望它显示为US$(因为澳大利亚的货币也称为“美元”,他们使用澳元的$符号)

您遇到的问题是,在“非主要”区域设置中显示货币时,股票Java货币格式化程序会发出臭味。也就是说,在美国,几乎每个人都希望在显示英镑和欧元时看到英镑和欧元,但股票Java库在en_US地区显示这些货币时显示“GBP”和“EUR”

我用下面的代码解决了这个问题。我基本上指定了显示国际货币时使用的自己的符号:

public static NumberFormat newCurrencyFormat(Currency currency, Locale displayLocale) {
    NumberFormat retVal = NumberFormat.getCurrencyInstance(displayLocale);
    retVal.setCurrency(currency);

    //The default JDK handles situations well when the currency is the default currency for the locale
    if (currency.equals(Currency.getInstance(displayLocale))) {
        return retVal;
    }

    //otherwise we need to "fix things up" when displaying a non-native currency
    if (retVal instanceof DecimalFormat) {
        DecimalFormat decimalFormat = (DecimalFormat) retVal;
        String correctedI18NSymbol = getCorrectedInternationalCurrencySymbol(currency, displayLocale);
        if (correctedI18NSymbol != null) {
            DecimalFormatSymbols dfs = decimalFormat.getDecimalFormatSymbols(); //this returns a clone of DFS
            dfs.setInternationalCurrencySymbol(correctedI18NSymbol);
            dfs.setCurrencySymbol(correctedI18NSymbol);
            decimalFormat.setDecimalFormatSymbols(dfs);
        }
    }

    return retVal;
}

private static String getCorrectedInternationalCurrencySymbol(Currency currency, Locale displayLocale) {
    ResourceBundle i18nSymbolsResourceBundle =
            ResourceBundle.getBundle("correctedI18nCurrencySymbols", displayLocale);
    if (i18nSymbolsResourceBundle.containsKey(currency.getCurrencyCode())) {
        return i18nSymbolsResourceBundle.getString(currency.getCurrencyCode());
    } else {
        return currency.getCurrencyCode();
    }
}
然后我有我的属性文件(corrected18ncurrencySymbols.properties),其中我指定要使用的货币符号:

# Note that these are the currency symbols to use for the specified code when displaying in a DIFFERENT locale than
# the home locale of the currency. This file can be edited as needed. In addition, if in some case one specific locale
# would use a symbol DIFFERENT than the standard international one listed here, then an additional properties file
# can be added making use of the standard ResourceBundle loading algorithm. For example, if we decided we wanted to
# show US dollars as just $ instead of US$ when in the UK, we could create a file i18nCurrencySymbols_en_GB.properties
# with the entry USD=$
ARS=$AR
AUD=AU$
BOB=$b
BRL=R$
CAD=CAN$
CLP=Ch$
COP=COL$
CRC=\u20A1
HRK=kn
CZK=K\u010D
DOP=RD$
XCD=EC$
EUR=\u20AC
GTQ=Q
GYD=G$
HNL=L
HKD=HK$
HUF=Ft
INR=\u20B9
IDR=Rp
ILS=\u20AA
JMD=J$
JPY=JP\u00A5
KRW=\u20A9
NZD=NZ$
NIO=C$
PAB=B/.
PYG=Gs
PEN=S/.
PHP=\u20B1
PLN=\u007A\u0142
RON=lei
SGD=S$
ZAR=R
TWD=NT$
THB=\u0E3F
TTD=TT$
GBP=\u00A3
USD=US$
UYU=$U
VEF=Bs
VND=\u20AB

不,我的问题是我不想使用区域设置设置格式。我只想说给我英镑的符号,它应该返回给我英镑,而我没有说Locale.UK。Java如何知道如何在没有Locale的情况下格式化它?即指定设置(如货币符号、小数分隔符和其他格式设置)的工具。否则,您需要使用手动字符串操作来执行所需操作。