1 public class NumberUtils {
2
3 private static final String MILLION_UNIT = "万";
4 private static final String BILLION_UNIT = "亿";
5 private static final BigDecimal ONE_HUNDRED_THOUSAND = new BigDecimal(100000);
6 private static final BigDecimal ONE_HUNDRED_MILLION = new BigDecimal(100000000);
7 private static final BigDecimal TEN_THOUSAND = new BigDecimal(10000);
8
9 /**
10 * 将数字转换成以万为单位或者以亿为单位，因为在前端数字太大显示有问题
11 * @param amount
12 * @return
13 */
14 public static String amountConversion(BigDecimal amount){
15 if (amount == null) {
16 return null;
17 }
18 if (amount.abs().compareTo(ONE_HUNDRED_THOUSAND) < 0) {
19 //如果小于10万
20 return amount.stripTrailingZeros().toPlainString();
21 }
22 if (amount.abs().compareTo(ONE_HUNDRED_MILLION) < 0) {
23 //如果大于10万小于1亿
24 return amount.divide(TEN_THOUSAND, 4, BigDecimal.ROUND_HALF_UP).stripTrailingZeros().toPlainString() + MILLION_UNIT;
25 }
26 return amount.divide(ONE_HUNDRED_MILLION, 4, BigDecimal.ROUND_HALF_UP).stripTrailingZeros().toPlainString() + BILLION_UNIT;
27 }
28
29 /**
30 * 将数字转换成以亿为单位
31 * @param amount
32 * @return
33 */
34 public static Double amountConversionBillion(BigDecimal amount){
35 if (amount == null) {
36 return null;
37 }
38 return amount.divide(ONE_HUNDRED_MILLION, 2, BigDecimal.ROUND_HALF_UP).stripTrailingZeros().doubleValue();
39 }
40 }
