飞滴出行网约车2022-service-price价格计算优化

internal-common/src/main/java/com/mashibing/internalcommon/util/BigDecimalUtils.java

@@ -0,0 +1,59 @@
+package com.mashibing.internalcommon.util;
+
+import java.math.BigDecimal;
+
+public class BigDecimalUtils {
+
+    /**
+     * 加法
+     * @param v1
+     * @param v2
+     * @return
+     */
+    public static double add(double v1 , double v2){
+        BigDecimal b1 = BigDecimal.valueOf(v1);
+        BigDecimal b2 = BigDecimal.valueOf(v2);
+
+        return b1.add(b2).doubleValue();
+    }
+
+    /**
+     * 减法
+     * @param v1
+     * @param v2
+     * @return
+     */
+    public static double substract(double v1,double v2){
+        BigDecimal b1 = BigDecimal.valueOf(v1);
+        BigDecimal b2 = BigDecimal.valueOf(v2);
+        return b1.subtract(b2).doubleValue();
+    }
+
+    /**
+     * 乘法
+     * @param v1
+     * @param v2
+     * @return
+     */
+    public static double multiply(double v1,double v2){
+        BigDecimal b1 = BigDecimal.valueOf(v1);
+        BigDecimal b2 = BigDecimal.valueOf(v2);
+        return b1.multiply(b2).doubleValue();
+
+    }
+    /**
+     * 除法
+     * @param v1
+     * @param v2
+     * @return
+     */
+    public static double divide(int v1, int v2){
+        if (v2 <= 0){
+            throw new IllegalArgumentException("除数非法");
+        }
+
+        BigDecimal b1 = BigDecimal.valueOf(v1);
+        BigDecimal b2 = BigDecimal.valueOf(v2);
+        return b1.divide(b2,2,BigDecimal.ROUND_HALF_UP).doubleValue();
+    }
+}

service-price/src/main/java/com/mashibing/serviceprice/service/ForecastPriceService.java

@@ -6,6 +6,7 @@ import com.mashibing.internalcommon.dto.ResponseResult;
 import com.mashibing.internalcommon.request.ForecastPriceDTO;
 import com.mashibing.internalcommon.response.DirectionResponse;
 import com.mashibing.internalcommon.response.ForecastPriceResponse;
+import com.mashibing.internalcommon.util.BigDecimalUtils;
 import com.mashibing.serviceprice.mapper.PriceRuleMapper;
 import com.mashibing.serviceprice.remote.ServiceMapClient;
 import lombok.extern.slf4j.Slf4j;
@@ -81,44 +82,40 @@ public class ForecastPriceService {
      * @param priceRule 计价规则
      *@return
      */
-    private Double getPriceByRule (Integer distance,Integer duration,PriceRule priceRule) {
+    private static Double getPriceByRule (Integer distance,Integer duration,PriceRule priceRule) {
         // BigDecimal
-        BigDecimal sumPriceDecimal = new BigDecimal(0);
+        double sumPrice = 0;
+
         // 起步价
         Double startFare = priceRule.getStartFare();
-        BigDecimal startFareDecimal = new BigDecimal(startFare);
+        sumPrice = BigDecimalUtils.add(sumPrice,startFare);
-        sumPriceDecimal = sumPriceDecimal.add(startFareDecimal);
 
         //里程费
         // 总里程 m => km
-        BigDecimal distanceDecimal = new BigDecimal(distance);
+        double distanceMile = BigDecimalUtils.divide(distance,1000);
-        BigDecimal distanceMileDecimal = distanceDecimal.divide(new BigDecimal(1000), 2, BigDecimal.ROUND_HALF_UP);
         // 起步里程
         Integer startMile = priceRule.getStartMile();
-        BigDecimal startMileDecimal = new BigDecimal(startMile);
         // 需收费的里程数
-        double mileTmp = distanceMileDecimal.subtract(startMileDecimal).doubleValue();
+        double subMile = BigDecimalUtils.substract(distanceMile, startMile);
-        if(mileTmp < 0){
+        subMile = subMile<0 ? 0:subMile;
-            mileTmp = 0;
-        }
-        BigDecimal subMileDecimal = new BigDecimal(mileTmp);
         // 获取计费规则-每公里收费
         Double unitPricePerMile = priceRule.getUnitPricePerMile();
-        BigDecimal unitPricePerMileDecimal = new BigDecimal(unitPricePerMile);
         // 计算最终里程费用
-        BigDecimal finalMileFareDecimal = subMileDecimal.multiply(unitPricePerMileDecimal).setScale(2, BigDecimal.ROUND_HALF_UP);
+        double mileFare = BigDecimalUtils.multiply(subMile,unitPricePerMile);
-        sumPriceDecimal = sumPriceDecimal.add(finalMileFareDecimal);
+        sumPrice = BigDecimalUtils.add(sumPrice,mileFare);
 
         //时长费
         // 时长的分钟数 s => min
-        BigDecimal durationDecimal = new BigDecimal(duration);
+        double timeMinute = BigDecimalUtils.divide(duration, 60);
-        BigDecimal durationMinDecimal = durationDecimal.divide(new BigDecimal(60), 2, BigDecimal.ROUND_HALF_UP);
         // 获取计费规则-每分钟收费
         Double unitPricePerMinute = priceRule.getUnitPricePerMinute();
-        BigDecimal unitPricePerMinuteDecimal = new BigDecimal(unitPricePerMinute);
         // 计算最终时长费用
-        BigDecimal finalTimeFareDecimal = durationMinDecimal.multiply(unitPricePerMinuteDecimal.setScale(2, BigDecimal.ROUND_HALF_UP));
+        double timeFare = BigDecimalUtils.multiply(timeMinute, unitPricePerMinute);
-        sumPriceDecimal = sumPriceDecimal.add(finalTimeFareDecimal);
+        sumPrice = BigDecimalUtils.add(sumPrice,timeFare);
+
+        // 过滤 最终计算值
+        BigDecimal sumPriceDecimal = new BigDecimal(sumPrice);
+        sumPriceDecimal = sumPriceDecimal.setScale(2, BigDecimal.ROUND_HALF_UP);
 
         return sumPriceDecimal.doubleValue();
     }