fix：成绩提交显示500实际提交成功

校级管理员可查看全部实验项目与成绩单。
学院管理员仅可查看本学院开课，或由本学院教师承担/管理的实验课。
场次取消、参与学生查看也同步执行上述范围校验，避免通过场次 ID 越权。
增加覆盖：校级全量、学院自有课程、跨学院管理课程可见、无关学院课程不可见。

src/Jiaowu.Api/Controllers/AttendanceController.cs

@@ -37,7 +37,8 @@ public sealed class AttendanceController(
         string? keyword = null,
         int page = 1,
         int pageSize = 20,
-        CancellationToken cancellationToken = default)
+        CancellationToken cancellationToken = default,
+        string? classKeyword = null)
     {
         page = Math.Max(1, page);
         pageSize = Math.Clamp(pageSize, 10, 50);
@@ -54,6 +55,14 @@ public sealed class AttendanceController(
                 x.Course!.Code.Contains(keyword) ||
                 x.Course.Name.Contains(keyword));
         }
+        if (!string.IsNullOrWhiteSpace(classKeyword))
+        {
+            classKeyword = classKeyword.Trim();
+            tasks = tasks.Where(x => x.Classes.Any(item =>
+                item.AdministrativeClass!.Code.Contains(classKeyword) ||
+                item.AdministrativeClass.Name.Contains(classKeyword) ||
+                item.AdministrativeClass.Major!.Name.Contains(classKeyword)));
+        }
         var total = await tasks.CountAsync(cancellationToken);
         var result = await tasks
             .OrderBy(x => x.Course!.Code)

src/Jiaowu.Api/Controllers/CourseSelectionsController.cs

@@ -1,5 +1,6 @@
 using System.ComponentModel.DataAnnotations;
 using System.Data;
+using Jiaowu.Api.Contracts;
 using Jiaowu.Api.Domain.Academic;
 using Jiaowu.Api.Domain.Identity;
 using Jiaowu.Api.Infrastructure.Auth;
@@ -37,6 +38,107 @@ public sealed class CourseSelectionsController(
         OfferingManagers + "," +
         SystemRoles.Teacher;
 
+    [HttpGet("enrollments")]
+    [Authorize(Roles = OfferingManagers)]
+    public async Task<ActionResult> GetEnrollments(
+        [FromQuery] CourseEnrollmentQuery query,
+        CancellationToken cancellationToken)
+    {
+        var source = ApplyEnrollmentFilters(ScopedEnrollments(), query);
+        var total = await source.CountAsync(cancellationToken);
+        var page = Math.Max(1, query.Page);
+        var pageSize = Math.Clamp(query.PageSize, 1, 100);
+        var items = await ProjectEnrollments(OrderEnrollments(source))
+            .Skip((page - 1) * pageSize)
+            .Take(pageSize)
+            .ToListAsync(cancellationToken);
+        return Ok(new PagedResult<object>(items.Cast<object>().ToList(), total, page, pageSize));
+    }
+
+    [HttpGet("enrollments/export.xlsx")]
+    [Authorize(Roles = OfferingManagers)]
+    public async Task<ActionResult> ExportEnrollments(
+        [FromQuery] CourseEnrollmentQuery query,
+        CancellationToken cancellationToken)
+    {
+        var items = await ProjectEnrollments(OrderEnrollments(
+                ApplyEnrollmentFilters(ScopedEnrollments(), query)))
+            .ToListAsync(cancellationToken);
+        var rows = items.Select(x => (IReadOnlyList<object?>)[
+            x.TermName, x.CollegeName, x.CourseCode, x.CourseName, x.TaskNumber,
+            x.StudentNumber, x.StudentName, x.MajorName, x.ClassName, x.Grade,
+            x.Status.ToString(), x.EnrollmentType.ToString(), x.EnrolledAt,
+            x.WithdrawnAt, x.ExemptionStatus?.ToString() ?? "—"
+        ]).ToList();
+        var bytes = ExcelWorkbookHelper.Create("修读课程名单", [
+            "学期", "开课院系", "课程代码", "课程名称", "教学班", "学号", "姓名",
+            "专业", "行政班", "年级", "修读状态", "修读类型", "选入时间", "退选时间", "免修审批"
+        ], rows);
+        return File(bytes, ExcelWorkbookHelper.ContentType,
+            $"修读课程名单-{DateTime.Now:yyyyMMdd-HHmm}.xlsx");
+    }
+
+    [HttpGet("enrollments/students")]
+    [Authorize(Roles = OfferingManagers)]
+    public async Task<ActionResult> GetStudentEnrollmentSummaries(
+        [FromQuery] CourseEnrollmentQuery query,
+        CancellationToken cancellationToken)
+    {
+        var source = ApplyEnrollmentFilters(ScopedEnrollments(), query);
+        var matchingStudentIds = source.Select(x => x.StudentId).Distinct();
+        var total = await matchingStudentIds.CountAsync(cancellationToken);
+        var page = Math.Max(1, query.Page);
+        var pageSize = Math.Clamp(query.PageSize, 1, 100);
+        var pageStudents = await db.Students.AsNoTracking()
+            .Where(x => matchingStudentIds.Contains(x.Id))
+            .OrderBy(x => x.StudentNumber).Skip((page - 1) * pageSize).Take(pageSize)
+            .Select(x => new EnrollmentStudentIdentity(
+                x.Id, x.StudentNumber, x.Name, x.AdministrativeClass!.Major!.Name,
+                x.AdministrativeClass.Name, x.AdministrativeClass.Grade))
+            .ToListAsync(cancellationToken);
+        var studentIds = pageStudents.Select(x => x.StudentId).ToArray();
+        var enrollments = await ProjectEnrollments(OrderEnrollments(source.Where(x =>
+                studentIds.Contains(x.StudentId))))
+            .ToListAsync(cancellationToken);
+        var summaries = pageStudents.Select(student =>
+        {
+            var courses = enrollments.Where(x => x.StudentId == student.StudentId).ToList();
+            return new StudentEnrollmentSummary(
+                student.StudentId, student.StudentNumber, student.StudentName,
+                student.MajorName, student.ClassName, student.Grade, courses,
+                courses.Count, courses.Where(x => x.Status == CourseEnrollmentStatus.Enrolled)
+                    .Sum(x => x.Credits));
+        }).ToList();
+        return Ok(new PagedResult<StudentEnrollmentSummary>(summaries, total, page, pageSize));
+    }
+
+    [HttpGet("enrollments/students/export.xlsx")]
+    [Authorize(Roles = OfferingManagers)]
+    public async Task<ActionResult> ExportStudentEnrollmentSummaries(
+        [FromQuery] CourseEnrollmentQuery query,
+        CancellationToken cancellationToken)
+    {
+        var items = await ProjectEnrollments(OrderEnrollments(
+                ApplyEnrollmentFilters(ScopedEnrollments(), query)))
+            .ToListAsync(cancellationToken);
+        var rows = items.GroupBy(x => new { x.StudentId, x.StudentNumber, x.StudentName,
+                x.MajorName, x.ClassName, x.Grade })
+            .OrderBy(x => x.Key.StudentNumber)
+            .Select(group => (IReadOnlyList<object?>)[
+                group.Key.StudentNumber, group.Key.StudentName, group.Key.MajorName,
+                group.Key.ClassName, group.Key.Grade,
+                string.Join("；", group.Select(x =>
+                    $"{x.TermName} {x.CourseCode} {x.CourseName}（{x.Status}）")),
+                group.Where(x => x.Status == CourseEnrollmentStatus.Enrolled)
+                    .Sum(x => x.Credits)
+            ]).ToList();
+        var bytes = ExcelWorkbookHelper.Create("学生修读汇总", [
+            "学号", "姓名", "专业", "行政班", "年级", "修读课程", "在修学分"
+        ], rows);
+        return File(bytes, ExcelWorkbookHelper.ContentType,
+            $"学生修读汇总-{DateTime.Now:yyyyMMdd-HHmm}.xlsx");
+    }
+
     [HttpGet("rounds")]
     [Authorize(Roles = SelectionUsers)]
     public async Task<ActionResult> GetRounds(
@@ -2225,6 +2327,99 @@ public sealed class CourseSelectionsController(
             : result;
     }
 
+    private IQueryable<CourseEnrollment> ScopedEnrollments()
+    {
+        var source = db.CourseEnrollments.AsNoTracking();
+        var scope = currentUserDataScope.Current;
+        return scope.Scope == DataScope.All
+            ? source
+            : source.Where(x =>
+                x.CourseSelectionOffering!.TeachingTask!.Course!.CollegeId ==
+                scope.RestrictedCollegeId);
+    }
+
+    private IQueryable<CourseEnrollment> ApplyEnrollmentFilters(
+        IQueryable<CourseEnrollment> source,
+        CourseEnrollmentQuery query)
+    {
+        if (query.AcademicTermId.HasValue)
+            source = source.Where(x => x.CourseSelectionOffering!.CourseSelectionRound!
+                .AcademicTermId == query.AcademicTermId.Value);
+        if (query.CourseId.HasValue)
+            source = source.Where(x => x.CourseSelectionOffering!.TeachingTask!.CourseId ==
+                query.CourseId.Value);
+        if (query.CollegeId.HasValue)
+            source = source.Where(x => x.CourseSelectionOffering!.TeachingTask!.Course!.CollegeId ==
+                query.CollegeId.Value);
+        if (query.MajorId.HasValue)
+            source = source.Where(x => x.Student!.AdministrativeClass!.MajorId ==
+                query.MajorId.Value);
+        if (query.AdministrativeClassId.HasValue)
+            source = source.Where(x => x.Student!.AdministrativeClassId ==
+                query.AdministrativeClassId.Value);
+        if (query.Grade.HasValue)
+            source = source.Where(x => x.Student!.AdministrativeClass!.Grade == query.Grade.Value);
+        if (query.EnrollmentYear.HasValue)
+            source = source.Where(x => x.Student!.EnrollmentYear == query.EnrollmentYear.Value);
+        if (query.Status.HasValue)
+            source = source.Where(x => x.Status == query.Status.Value);
+        if (query.EnrollmentType.HasValue)
+            source = source.Where(x => x.EnrollmentType == query.EnrollmentType.Value);
+        if (query.ExemptionStatus.HasValue)
+            source = source.Where(x => db.CourseExemptions
+                .Where(exemption => exemption.StudentId == x.StudentId &&
+                    exemption.TeachingTaskId == x.CourseSelectionOffering!.TeachingTaskId)
+                .OrderByDescending(exemption => exemption.CreatedAt)
+                .Select(exemption => (ApprovalStatus?)exemption.Status)
+                .FirstOrDefault() == query.ExemptionStatus.Value);
+        if (!string.IsNullOrWhiteSpace(query.Keyword))
+        {
+            var keyword = query.Keyword.Trim();
+            source = source.Where(x =>
+                x.Student!.StudentNumber.Contains(keyword) ||
+                x.Student.Name.Contains(keyword) ||
+                x.CourseSelectionOffering!.TeachingTask!.Course!.Code.Contains(keyword) ||
+                x.CourseSelectionOffering.TeachingTask.Course.Name.Contains(keyword) ||
+                x.CourseSelectionOffering.TeachingTask.TaskNumber.Contains(keyword));
+        }
+        return source;
+    }
+
+    private static IOrderedQueryable<CourseEnrollment> OrderEnrollments(
+        IQueryable<CourseEnrollment> source) => source
+        .OrderByDescending(x => x.CourseSelectionOffering!.CourseSelectionRound!
+            .AcademicTerm!.StartDate)
+        .ThenBy(x => x.CourseSelectionOffering!.TeachingTask!.Course!.Code)
+        .ThenBy(x => x.Student!.StudentNumber);
+
+    private IQueryable<CourseEnrollmentListItem> ProjectEnrollments(
+        IQueryable<CourseEnrollment> source) => source.Select(x => new CourseEnrollmentListItem(
+            x.Id,
+            x.StudentId,
+            x.CourseSelectionOfferingId,
+            x.CourseSelectionOffering!.CourseSelectionRound!.AcademicTerm!.Name,
+            x.CourseSelectionOffering.CourseSelectionRound.AcademicTerm.StartDate,
+            x.CourseSelectionOffering.TeachingTask!.Course!.College!.Name,
+            x.CourseSelectionOffering.TeachingTask.Course.Code,
+            x.CourseSelectionOffering.TeachingTask.Course.Name,
+            x.CourseSelectionOffering.TeachingTask.TaskNumber,
+            x.CourseSelectionOffering.TeachingTask.Course.Credits,
+            x.Student!.StudentNumber,
+            x.Student.Name,
+            x.Student.AdministrativeClass!.Major!.Name,
+            x.Student.AdministrativeClass.Name,
+            x.Student.AdministrativeClass.Grade,
+            x.Status,
+            x.EnrollmentType,
+            x.EnrolledAt,
+            x.WithdrawnAt,
+            db.CourseExemptions
+                .Where(exemption => exemption.StudentId == x.StudentId &&
+                    exemption.TeachingTaskId == x.CourseSelectionOffering.TeachingTaskId)
+                .OrderByDescending(exemption => exemption.CreatedAt)
+                .Select(exemption => (ApprovalStatus?)exemption.Status)
+                .FirstOrDefault()));
+
     private ActionResult ProfileNotFound() =>
         ConflictProblem("当前账号未关联有效学生档案，请联系教务管理员。");
 
@@ -2294,6 +2489,62 @@ public sealed record AdminEnrollmentRequest(
 public sealed record ForceEnrollmentRequest(
     [MinLength(1)] IReadOnlyCollection<Guid> StudentIds);
 
+public sealed record CourseEnrollmentQuery(
+    Guid? AcademicTermId,
+    Guid? CourseId,
+    Guid? CollegeId,
+    Guid? MajorId,
+    Guid? AdministrativeClassId,
+    int? Grade,
+    int? EnrollmentYear,
+    CourseEnrollmentStatus? Status,
+    EnrollmentType? EnrollmentType,
+    ApprovalStatus? ExemptionStatus,
+    string? Keyword,
+    int Page = 1,
+    int PageSize = 20);
+
+public sealed record CourseEnrollmentListItem(
+    Guid Id,
+    Guid StudentId,
+    Guid CourseSelectionOfferingId,
+    string TermName,
+    DateOnly TermStartDate,
+    string CollegeName,
+    string CourseCode,
+    string CourseName,
+    string TaskNumber,
+    decimal Credits,
+    string StudentNumber,
+    string StudentName,
+    string MajorName,
+    string ClassName,
+    int Grade,
+    CourseEnrollmentStatus Status,
+    EnrollmentType EnrollmentType,
+    DateTime? EnrolledAt,
+    DateTime? WithdrawnAt,
+    ApprovalStatus? ExemptionStatus);
+
+public sealed record EnrollmentStudentIdentity(
+    Guid StudentId,
+    string StudentNumber,
+    string StudentName,
+    string MajorName,
+    string ClassName,
+    int Grade);
+
+public sealed record StudentEnrollmentSummary(
+    Guid StudentId,
+    string StudentNumber,
+    string StudentName,
+    string MajorName,
+    string ClassName,
+    int Grade,
+    IReadOnlyList<CourseEnrollmentListItem> Courses,
+    int CourseCount,
+    decimal ActiveCredits);
+
 public sealed record StudentOfferingDto(
     Guid Id,
     Guid TeachingTaskId,

src/Jiaowu.Api/Controllers/CoursesController.cs

@@ -323,10 +323,7 @@ public sealed class CoursesController(
         if (scope.Scope == DataScope.All) return source;
         if (scope.Scope == DataScope.College)
         {
-            return source.Where(x =>
-                x.Nature == CourseNature.GeneralRequired ||
-                x.Nature == CourseNature.GeneralElective ||
-                x.CollegeId == scope.RestrictedCollegeId);
+            return source.Where(x => x.CollegeId == scope.RestrictedCollegeId);
         }
         if (scope.Scope == DataScope.Class)
         {