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common: MoneyUtils 移到 common 模块
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package cn.iocoder.yudao.framework.common.util.number;
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import cn.hutool.core.util.NumberUtil;
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import java.math.BigDecimal;
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import java.math.RoundingMode;
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/**
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* 金额工具类
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*
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* @author 芋道源码
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*/
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public class MoneyUtils {
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/**
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* 计算百分比金额,四舍五入
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*
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* @param price 金额
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* @param rate 百分比,例如说 56.77% 则传入 56.77
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* @return 百分比金额
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*/
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public static Integer calculateRatePrice(Integer price, Double rate) {
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return calculateRatePrice(price, rate, 0, RoundingMode.HALF_UP).intValue();
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}
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/**
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* 计算百分比金额,向下传入
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*
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* @param price 金额
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* @param rate 百分比,例如说 56.77% 则传入 56.77
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* @return 百分比金额
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*/
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public static Integer calculateRatePriceFloor(Integer price, Double rate) {
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return calculateRatePrice(price, rate, 0, RoundingMode.FLOOR).intValue();
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}
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/**
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* 计算百分比金额
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*
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* @param price 金额
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* @param rate 百分比,例如说 56.77% 则传入 56.77
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* @param scale 保留小数位数
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* @param roundingMode 舍入模式
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*/
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public static BigDecimal calculateRatePrice(Number price, Number rate, int scale, RoundingMode roundingMode) {
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return NumberUtil.toBigDecimal(price).multiply(NumberUtil.toBigDecimal(rate)) // 乘以
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.divide(BigDecimal.valueOf(100), scale, roundingMode); // 除以 100
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}
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}
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