add 零星收费加入交易明细

mec-biz/src/main/java/com/ym/mec/biz/service/impl/StudentRegistrationServiceImpl.java

@@ -795,9 +795,9 @@ public class StudentRegistrationServiceImpl extends BaseServiceImpl<Long, Studen
             }
 
             //插入交易明细
-            if (studentPaymentOrder.getActualAmount() != null && studentPaymentOrder.getActualAmount().compareTo(BigDecimal.ZERO) > 0) {
+            BigDecimal amount = studentPaymentOrder.getActualAmount();
+            if (amount != null && amount.compareTo(BigDecimal.ZERO) > 0) {
                 SysUserCashAccount cashAccount = sysUserCashAccountService.get(studentRegistration.getUserId());
-                BigDecimal amount = studentPaymentOrder.getActualAmount();
                 //充值
                 SysUserCashAccountDetail rechargeDetail = new SysUserCashAccountDetail();
                 rechargeDetail.setAmount(amount);