Java数字金额转化成汉字大写金额

Myth丶恋晨 2022-02-01 16:55 581阅读 0赞

import java.math.BigDecimal;
    
    /** * Utils - 金额转为大写汉字 */
    public final class NumberToCNUtils { 
    
        /**汉语中数字大写*/
        private static final String[] CN_UPPER_NUMBER = {  "零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖" };
    
        /**汉语中货币单位大写，这样的设计类似于占位符*/
        private static final String[] CN_UPPER_MONETRAY_UNIT = {  "分", "角", "元", "拾", "佰", "仟", "万", "拾", "佰", "仟", "亿",
                "拾", "佰", "仟", "兆", "拾", "佰", "仟" };
    
        /**特殊字符：整*/
        private static final String CN_FULL = "整";
    
        /**特殊字符：负*/
        private static final String CN_NEGATIVE = "负";
    
        /** 金额的精度，默认值为2*/
        private static final int MONEY_PRECISION = 2;
    
        /**特殊字符：零元整*/
        private static final String CN_ZEOR_FULL = "零元" + CN_FULL;
    
        /** * 把输入的金额转换为汉语中人民币的大写 * * @param numberOfMoney * 输入的金额 * @return 对应的汉语大写 */
        public static String convert(BigDecimal numberOfMoney) { 
            StringBuffer sb = new StringBuffer();
            // -1, 0, or 1 as the value of this BigDecimal is negative, zero, or
            // positive.
            int signum = numberOfMoney.signum();
            // 零元整的情况
            if (signum == 0) { 
                return CN_ZEOR_FULL;
            }
            // 这里会进行金额的四舍五入
            long number = numberOfMoney.movePointRight(MONEY_PRECISION).setScale(0, 4).abs().longValue();
            // 得到小数点后两位值
            long scale = number % 100;
            int numUnit = 0;
            int numIndex = 0;
            boolean getZero = false;
            // 判断最后两位数，一共有四中情况：00 = 0, 01 = 1, 10, 11
            if (!(scale > 0)) { 
                numIndex = 2;
                number = number / 100;
                getZero = true;
            }
            if ((scale > 0) && (!(scale % 10 > 0))) { 
                numIndex = 1;
                number = number / 10;
                getZero = true;
            }
            int zeroSize = 0;
            while (true) { 
                if (number <= 0) { 
                    break;
                }
                // 每次获取到最后一个数
                numUnit = (int) (number % 10);
                if (numUnit > 0) { 
                    if ((numIndex == 9) && (zeroSize >= 3)) { 
                        sb.insert(0, CN_UPPER_MONETRAY_UNIT[6]);
                    }
                    if ((numIndex == 13) && (zeroSize >= 3)) { 
                        sb.insert(0, CN_UPPER_MONETRAY_UNIT[10]);
                    }
                    sb.insert(0, CN_UPPER_MONETRAY_UNIT[numIndex]);
                    sb.insert(0, CN_UPPER_NUMBER[numUnit]);
                    getZero = false;
                    zeroSize = 0;
                } else { 
                    ++zeroSize;
                    if (!(getZero)) { 
                        sb.insert(0, CN_UPPER_NUMBER[numUnit]);
                    }
                    if (numIndex == 2) { 
                        if (number > 0) { 
                            sb.insert(0, CN_UPPER_MONETRAY_UNIT[numIndex]);
                        }
                    } else if (((numIndex - 2) % 4 == 0) && (number % 1000 > 0)) { 
                        sb.insert(0, CN_UPPER_MONETRAY_UNIT[numIndex]);
                    }
                    getZero = true;
                }
                // 让number每次都去掉最后一个数
                number = number / 10;
                ++numIndex;
            }
            // 如果signum == -1，则说明输入的数字为负数，就在最前面追加特殊字符：负
            if (signum == -1) { 
                sb.insert(0, CN_NEGATIVE);
            }
            // 输入的数字小数点后两位为"00"的情况，则要在最后追加特殊字符：整
            if (!(scale > 0)) { 
                sb.append(CN_FULL);
            }
            return sb.toString();
        }
    
    }