删除重复逻辑

DRFAPIException和exceptions.APIException应该是同一个对象，如果这里重复判断是有原因的，请忽略本次提交

backend/dvadmin/utils/exception.py

@@ -10,7 +10,6 @@ import logging
 import traceback
 
 from django.db.models import ProtectedError
-from rest_framework import exceptions
 from rest_framework.exceptions import APIException as DRFAPIException, AuthenticationFailed
 from rest_framework.views import set_rollback
 
@@ -37,9 +36,6 @@ def CustomExceptionHandler(ex, context):
     elif isinstance(ex, DRFAPIException):
         set_rollback()
         msg = ex.detail
-    elif isinstance(ex, exceptions.APIException):
-        set_rollback()
-        msg = ex.detail
     elif isinstance(ex, ProtectedError):
         set_rollback()
         msg = "删除失败:该条数据与其他数据有相关绑定"