修复了一些已知问题

backend/routes/admin.py

@@ -23,12 +23,13 @@ from services.conduct_service import ConductService
 from services.homework_service import HomeworkService
 from services.attendance_service import AttendanceService
 from services.log_service import LogService
+from utils.redis_client import RedisClient
 from schemas.admin import (
     AddPointsRequest, RevokeRequest, AddAdminRequest,
     AddStudentRequest, UpdateStudentRequest,
     UpdateHomeworkStatusRequest, AddAttendanceRequest,
     UpdateAdminRequest, DeleteAdminRequest, ResetPasswordRequest,
-    CreateAssignmentRequest
+    CreateAssignmentRequest, UnlockUserRequest
 )
 from utils.response import success_response, error_response
 from utils.logger import get_logger
@@ -214,14 +215,17 @@ async def add_conduct_points(request: Request, req: AddPointsRequest):
         recorder_name=user["username"]
     )
     if result["success"]:
-        role = await PermissionChecker.get_user_role(user["user_id"])
-        await LogService.write_operation_log(
-            operator_id=user["user_id"], operator_name=user["real_name"],
-            operator_role=role, operation_type="add_points",
-            target_type="conduct",
-            details=f"批量加减分: {req.points_change}分, 原因: {req.reason}, 对象: {req.student_ids}",
-            ip=request.client.host
-        )
+        try:
+            role = await PermissionChecker.get_user_role(user["user_id"])
+            await LogService.write_operation_log(
+                operator_id=user["user_id"], operator_name=user["real_name"],
+                operator_role=role, operation_type="add_points",
+                target_type="conduct",
+                details=f"批量加减分: {req.points_change}分, 原因: {req.reason}, 对象: {req.student_ids}",
+                ip=request.client.host
+            )
+        except Exception as e:
+            logger.error(f"写入加减分操作日志失败: {e}")
         return success_response(data=result, message="操作成功")
     else:
         return error_response(message=result["message"])
@@ -592,4 +596,26 @@ async def reset_admin_password(request: Request, user_id: int, req: ResetPasswor
         )
         return success_response(message="密码重置成功")
     else:
-        return error_response(message="密码重置失败")
+        return error_response(message="密码重置失败")
+
+
+# ========== 登录黑名单管理 ==========
+
+@router.post("/unlock-user")
+async def unlock_user(request: Request, req: UnlockUserRequest):
+    """解除用户登录锁定（班主任）"""
+    user = await get_current_user(request)
+    is_teacher = await PermissionChecker.check_is_teacher(user["user_id"])
+    if not is_teacher:
+        return error_response(message="仅班主任可解除用户锁定", code=403)
+    
+    await RedisClient.clear_login_attempts(req.username)
+    
+    await LogService.write_operation_log(
+        operator_id=user["user_id"], operator_name=user["real_name"],
+        operator_role="班主任", operation_type="unlock_user",
+        target_type="user",
+        details=f"解除用户登录锁定: {req.username}",
+        ip=request.client.host
+    )
+    return success_response(message=f"已解除用户 {req.username} 的登录锁定")