fix no plus sign before fee of coupon cut

 package com.yohoufo.common.utils;
 
+import com.yohobuy.ufo.model.order.constants.OrderConstant;
+import org.apache.commons.lang3.StringUtils;
+
 /**
  * Created by chenchao on 2018/9/14.
  */
@@ -11,6 +14,19 @@ public class PriceFormater {
     }
 
 
+    public static String addPlusSign4Fee(String fmtFee){
+        if (StringUtils.isBlank(fmtFee)){
+            return fmtFee;
+        }
+        return OrderConstant.PLUS_SIGN+ fmtFee;
+    }
+
+    public static String addSubtract4Fee(String fmtFee){
+        if (null == fmtFee){
+            return null;
+        }
+        return OrderConstant.SUB_SIGN + fmtFee;
+    }
 
 
 }

@@ -22,6 +22,7 @@ import com.yohoufo.order.model.dto.ServiceFeeRate;
 import com.yohoufo.order.service.proxy.ResourcesProxyService;
 import com.yohoufo.order.service.support.CouponSupport;
 import com.yohoufo.order.utils.MathUtils;
+import org.apache.commons.lang3.StringUtils;
 
 import java.math.BigDecimal;
 import java.util.List;
@@ -51,7 +52,7 @@ public final class SellerOrderConvertor {
         }
 
         PlatformFee platformFeeWrapper = PlatformFee.builder()
-                .amount(buildSubtractFee(formatFee(platformFeeDto.getTotal())))
+                .amount(PriceFormater.addSubtract4Fee(formatFee(platformFeeDto.getTotal())))
                 .appraiseFee(formatFee(platformFeeDto.getAppraiseFee()))
                 .packageFee(formatFee(platformFeeDto.getPackageFee()))
                 .serviceFee(formatFee(platformFeeDto.getServiceFee()))
@@ -67,7 +68,7 @@ public final class SellerOrderConvertor {
                 .earnestMoney(earnestMoney.doubleValue())
                 .earnestMoneyStr(earnestMoneyStr)
                 .platformFee(platformFeeWrapper)
-                .bankTransferFee(buildSubtractFee(bankTransferFeeStr))
+                .bankTransferFee(PriceFormater.addSubtract4Fee(bankTransferFeeStr))
                 .income(incomeStr)
                 .build();
         return computeBo;
@@ -96,7 +97,7 @@ public final class SellerOrderConvertor {
             }
         }
         PlatformFee platformFeeWrapper = PlatformFee.builder()
-                .amount(buildSubtractFee(formatFee(platformFeeDto.getTotal())))
+                .amount(PriceFormater.addSubtract4Fee(formatFee(platformFeeDto.getTotal())))
                 .appraiseFee(formatFee(platformFeeDto.getAppraiseFee()))
                 .packageFee(formatFee(platformFeeDto.getPackageFee()))
                 .serviceFee(formatFee(platformFeeDto.getServiceFee()))
@@ -130,14 +131,14 @@ public final class SellerOrderConvertor {
         //
         BigDecimal couponCutAmount = computeResult.getCouponCutAmount();
         CouponInfo couponInfo = Objects.isNull(couponCutAmount) || couponCutAmount.compareTo(BigDecimal.ZERO) <= 0? null
-                : CouponInfo.builder().couponAmountStr(formatFee(couponCutAmount)).build();
+                : CouponInfo.builder().couponAmountStr(PriceFormater.addPlusSign4Fee(formatFee(couponCutAmount))).build();
 
         //
         SoldPrdComputeBo computeBo = SoldPrdComputeBo.builder()
                 .earnestMoney(earnestMoney.doubleValue())
                 .earnestMoneyStr(earnestMoneyStr)
                 .platformFee(platformFeeWrapper)
-                .bankTransferFee(buildSubtractFee(bankTransferFeeStr))
+                .bankTransferFee(PriceFormater.addSubtract4Fee(bankTransferFeeStr))
                 .income(incomeStr)
                 .couponInfo(couponInfo)
                 .build();
@@ -163,7 +164,7 @@ public final class SellerOrderConvertor {
         }
 
         PlatformFee platformFeeWrapper = PlatformFee.builder()
-                .amount(buildSubtractFee(formatFee(platformFeeDto.getTotal())))
+                .amount(PriceFormater.addSubtract4Fee(formatFee(platformFeeDto.getTotal())))
                 .appraiseFee(formatFee(platformFeeDto.getAppraiseFee()))
                 .packageFee(formatFee(platformFeeDto.getPackageFee()))
                 .serviceFee(formatFee(platformFeeDto.getServiceFee()))
@@ -180,7 +181,7 @@ public final class SellerOrderConvertor {
                 .earnestMoney(earnestMoney.doubleValue())
                 .earnestMoneyStr(earnestMoneyStr)
                 .platformFee(platformFeeWrapper)
-                .bankTransferFee(buildSubtractFee(bankTransferFeeStr))
+                .bankTransferFee(PriceFormater.addSubtract4Fee(bankTransferFeeStr))
                 .income(incomeStr)
                 .build();
         return computeBo;
@@ -239,7 +240,7 @@ public final class SellerOrderConvertor {
         switch (chargeParam.getChargeStage()){
             case COMPUTE:{
                 CouponInfo couponInfo = CouponSupport.buildCouponInfo(computeResult.getCouponPayResultList().getCouponPayResults());
-                couponInfo.setCouponAmountStr(OrderConstant.PLUS_SIGN+couponInfo.getCouponAmountStr());
+                couponInfo.setCouponAmountStr(PriceFormater.addPlusSign4Fee(couponInfo.getCouponAmountStr()));
                 bo.setCouponInfo(couponInfo);
                 List<String> couponCodes = Lists.newArrayList(sorboc.getCouponCode());
                 //
@@ -253,12 +254,6 @@ public final class SellerOrderConvertor {
     }
 
 
-    public static String buildSubtractFee(String fmtFee){
-        if (null == fmtFee){
-            return null;
-        }
-        return "-" + fmtFee;
-    }
 
 
     public static String formatFee(BigDecimal fee){