如何将字符串解析为 BigDecimal? [英] How can I parse a String to BigDecimal?

问题描述

我有这个字符串:10,692,467,440,017.120(这是一个数量).

I have this String: 10,692,467,440,017.120 (it's an amount).

我想将其解析为 BigDecimal.问题是我尝试了 DecimalFormat 和 NumbeFormat 都是徒劳的.

I want to parse it to a BigDecimal. The problem is that I have tried both DecimalFormat and NumbeFormat in vain.

推荐答案

试试这个

// Create a DecimalFormat that fits your requirements
DecimalFormatSymbols symbols = new DecimalFormatSymbols();
symbols.setGroupingSeparator(',');
symbols.setDecimalSeparator('.');
String pattern = "#,##0.0#";
DecimalFormat decimalFormat = new DecimalFormat(pattern, symbols);
decimalFormat.setParseBigDecimal(true);

// parse the string
BigDecimal bigDecimal = (BigDecimal) decimalFormat.parse("10,692,467,440,017.120");
System.out.println(bigDecimal);

如果您正在构建支持 I18N 的应用程序，您应该使用 DecimalFormatSymbols(Locale)

If you are building an application with I18N support you should use DecimalFormatSymbols(Locale)

还要记住 decimalFormat.parse 可以抛出一个 ParseException 所以你需要处理它(使用 try/catch)或抛出它并让你的另一部分程序处理它

Also keep in mind that decimalFormat.parse can throw a ParseException so you need to handle it (with try/catch) or throw it and let another part of your program handle it

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