fix:去除重复的截止时间

@@ -2,6 +2,7 @@ package service
 
 import (
 	"fmt"
+	"gitlab.fjmaimaimai.com/linmadan/mmm-worth/pkg/infrastructure/utils"
 	"math"
 	"strconv"
 	"time"
@@ -356,7 +357,10 @@ func (cashPoolService *CashPoolService) ListExchangeCashActivityDeadline(listExc
 		// 提取兑换现金活动截止时间
 		var deadlines []interface{}
 		for _, activity := range activities {
-			deadlines = append(deadlines, activity.Deadline.Format("2006-01-02"))
+			tmpTime := activity.Deadline.Format("2006-01-02")
+			if !utils.IsContain(deadlines, tmpTime) {
+				deadlines = append(deadlines, tmpTime)
+			}
 		}
 		if len(deadlines) == 0 {
 			deadlines = []interface{}{}

@@ -19,3 +19,12 @@ func StringSliceEqualBCE(a, b []int) bool {
 
 	return true
 }
+
+func IsContain(items []interface{}, item string) bool {
+	for _, eachItem := range items {
+		if eachItem == item {
+			return true
+		}
+	}
+	return false
+}
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