fix bug

mallinkService/src/main/java/com/iformall/domain/vo/WxCouponOrderCVo.java

@@ -170,7 +170,10 @@ public class WxCouponOrderCVo extends WxCouponOrder {
 		if (StringUtils.isBlank(couponOrderId)) {
 			return null;
 		}
-		StringBuffer sb = new StringBuffer().append(couponOrderId).append(arg).append(DateUtils.date2String(DateUtils.getSecondsTimeAfter(expiredSeconds, new Date())));
+		StringBuffer sb = new StringBuffer().append(couponOrderId);
+		if (expiredSeconds > 0 ) {
+			sb.append(arg).append(DateUtils.date2String(DateUtils.getSecondsTimeAfter(expiredSeconds, new Date())));
+		}
 		return Base64Util.encode(sb.toString().getBytes());
 	}