fixbug

themis-backend/src/main/java/com/qmth/themis/backend/api/SysController.java

@@ -253,7 +253,9 @@ public class SysController {
     @ApiResponses({@ApiResponse(code = 200, message = "角色信息", response = TBRole.class)})
     public Result roleList() {
         List<TBRole> tbRoleList = (List<TBRole>) redisUtil.getRole();
-        if (Objects.isNull(tbRoleList) || tbRoleList.size() == 0) {
+        if (Objects.nonNull(tbRoleList)) {
+            tbRoleList = (List<TBRole>) tbRoleList.get(0);
+        } else {
             QueryWrapper<TBRole> tbRoleQueryWrapper = new QueryWrapper<>();
             tbRoleQueryWrapper.lambda().notIn(TBRole::getRoleCode, RoleEnum.SUPER_ADMIN.name(), RoleEnum.STUDENT.name());
             tbRoleList = tbRoleService.list(tbRoleQueryWrapper);