fix 课程余额变动，操作用户null

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

@@ -235,12 +235,16 @@ public class SysUserCashAccountServiceImpl extends BaseServiceImpl<Integer, SysU
         sysUserCashAccountDao.update(cashAccount);
 
         if (decimal.compareTo(BigDecimal.ZERO) != 0) {
+           String comment = description;
             SysUser sysUser = sysUserFeignService.queryUserInfo();
+            if(sysUser != null && sysUser.getId()!=null){
+                comment +=  "-" + sysUser.getId();
+            }
             SysUserCoursesAccountDetail sysUserCoursesAccountDetail = new SysUserCoursesAccountDetail();
             sysUserCoursesAccountDetail.setUserId(userId);
             sysUserCoursesAccountDetail.setAmount(decimal);
             sysUserCoursesAccountDetail.setBalance(balance);
-            sysUserCoursesAccountDetail.setComment(description + "-" + sysUser.getId());
+            sysUserCoursesAccountDetail.setComment(comment);
             sysUserCoursesAccountDetail.setStatus(DealStatusEnum.SUCCESS);
             sysUserCoursesAccountDetail.setType(type);
             sysUserCoursesAccountDetail.setUpdateTime(date);