java - 如果我们在数据库中只有国家代码，则获取货币代码

Question

我在获取国家/地区货币时遇到问题，我通过这些代码在数据库中获取了国家/地区代码，我必须在 Java 中获取国家/地区代码如何为此编写代码请给我建议。我正在尝试使用此示例，但它不起作用。

    class Utils {
    public static SortedMap<Currency, Locale> currencyLocaleMap;
    static {
        currencyLocaleMap = new TreeMap<Currency, Locale>(
                new Comparator<Currency>() {
                    public int compare(Currency c1, Currency c2) {
                        return c1.getCurrencyCode().compareTo(
                                c2.getCurrencyCode());
                    }
                });
        for (Locale locale : Locale.getAvailableLocales()) {
            try {
                Currency currency = Currency.getInstance(locale);
                currencyLocaleMap.put(currency, locale);
            } catch (Exception e) {
            }
        }
    }

    public static String getCurrencySymbol(String currencyCode) {
        Currency currency = Currency.getInstance(currencyCode);
        System.out.println(currencyCode + ":-"
                + currency.getSymbol(currencyLocaleMap.get(currency)));
        return currency.getSymbol(currencyLocaleMap.get(currency));
    }
}

  public class GetCurrency {
    public static void main(String[] args) {

        Utils.getCurrencySymbol(Currency.getInstance("INR").getCurrencyCode());
        Utils.getCurrencySymbol(Currency.getInstance(Locale.JAPAN)
                .getCurrencyCode());
        Utils.getCurrencySymbol(Currency.getInstance(Locale.UK)
                .getCurrencyCode());

        Utils.getCurrencySymbol("INR");
    }
}

Answer 1

尝试:

//to retrieve currency code
public static String getCurrencyCode(String countryCode) {
    return Currency.getInstance(new Locale("", countryCode)).getCurrencyCode(); 
}

//to retrieve currency symbol 
public static String getCurrencySymbol(String countryCode) {
    return Currency.getInstance(new Locale("", countryCode)).getSymbol(); 
}