diff --git a/EduSystemServer/Eduadmin/urls.py b/EduSystemServer/Eduadmin/urls.py
index f7d9603..1051814 100644
--- a/EduSystemServer/Eduadmin/urls.py
+++ b/EduSystemServer/Eduadmin/urls.py
@@ -10,5 +10,6 @@ from django.urls import path
 from .views import *
 
 urlpatterns = [
-    path("teachers/", teacher_manage),
+    path("teacher/", teacher_manage),
+    path('course/',course_selection)
 ]
\ No newline at end of file
diff --git a/EduSystemServer/Eduadmin/views.py b/EduSystemServer/Eduadmin/views.py
index f427141..28349f1 100644
--- a/EduSystemServer/Eduadmin/views.py
+++ b/EduSystemServer/Eduadmin/views.py
@@ -1,7 +1,7 @@
 from django.shortcuts import render
 
 # Create your views here.
-from django.http import JsonResponse
+from django.http import JsonResponse, HttpResponseBadRequest, HttpResponse
 from teacher.models import Teacher
 from django.views.decorators.csrf import csrf_exempt
 from io import BytesIO
@@ -12,7 +12,8 @@ from Student.models import Student
 from django.db.models import Q
 from django.db.models import Subquery, OuterRef
 from django.core.exceptions import ObjectDoesNotExist
-
+from ast import literal_eval
+from MySQLdb import IntegrityError
 from EduSystemServer.utils import ResponseUtil
 @csrf_exempt
 def teacher_manage(request): # 教师个人信息修改
@@ -26,17 +27,21 @@ def teacher_manage(request): # 教师个人信息修改
         dept = request.POST.get('dept')
         if (username and password and name and sex
                 and title and education and dept):
-            teacher = Teacher()
-            teacher.username = username
-            teacher.password = password
-            teacher.name = name
-            teacher.sex = sex
-            teacher.title = title
-            teacher.education = education
-            teacher.dept = dept
-            teacher.save()
-            response = ResponseUtil.ok(teacher.to_dict(), "老师信息插入成功")
-            return JsonResponse(response)
+            try:
+                teacher = Teacher()
+                teacher.username = username
+                teacher.password = password
+                teacher.name = name
+                teacher.sex = sex
+                teacher.title = title
+                teacher.education = education
+                teacher.dept = dept
+                teacher.save()
+                response = ResponseUtil.ok(teacher.to_dict(), "老师信息插入成功")
+                return JsonResponse(response)
+            except:
+                response = ResponseUtil.error("老师信息插入未成功，用户名重复！")
+                return JsonResponse(response)
         else:
             response = ResponseUtil.error("老师信息插入未成功，存在空值，请你仔细检测并上传")
             return JsonResponse(response)
@@ -68,18 +73,38 @@ def teacher_manage(request): # 教师个人信息修改
         return JsonResponse(response)
 
     elif request.method == "DELETE":
+        # parser = MultiPartParser(request.META, BytesIO(request.body), request.upload_handlers, request.encoding)
+        # posdict = parser.parse()
+        # print(posdict)
+        # tid = int(posdict[0]['tid'])
+        # print(tid)
+        # try:
+        #     info = Teacher.objects.filter(tid=tid).get().to_dict()
+        #     Teacher.objects.filter(tid=tid).delete()
+        #     response = ResponseUtil.ok(info, "老师信息删除成功")
+        #     return JsonResponse(response)
+        # except:
+        #     response = ResponseUtil.error("删除失败，未找到老师信息！")
+        #     return JsonResponse(response)
         parser = MultiPartParser(request.META, BytesIO(request.body), request.upload_handlers, request.encoding)
         posdict = parser.parse()
-        print(posdict)
-        tid = int(posdict[0]['tid'])
-        print(tid)
+        # print(posdict)
+        tids = posdict[0]['tids']
+        # print(tids)
+        tids = literal_eval(tids)
+        # print(tids)
         try:
-            info = Teacher.objects.filter(tid=tid).get().to_dict()
-            Teacher.objects.filter(tid=tid).delete()
-            response = ResponseUtil.ok(info, "老师信息删除成功")
-            return JsonResponse(response)
+            info = Teacher.objects.filter(tid__in=tids).values()
+            data = list(info)
+            if len(data) > 0:
+                Teacher.objects.filter(tid__in=tids).delete()
+                response = ResponseUtil.ok(data, "老师信息删除成功")
+                return JsonResponse(response)
+            else:
+                response = ResponseUtil.error("老师未找到")
+                return JsonResponse(response)
         except:
-            response = ResponseUtil.error("删除失败，未找到老师信息！")
+            response = ResponseUtil.ok("未查询到老师信息，删除失败")
             return JsonResponse(response)
     elif request.method == 'PUT':
         put = MultiPartParser(request.META, request, request.upload_handlers, request.encoding).parse()
@@ -100,3 +125,92 @@ def teacher_manage(request): # 教师个人信息修改
         else:
             response = ResponseUtil.error("修改信息有误！")
             return JsonResponse(response)
+
+@csrf_exempt
+def course_selection(request): # 选课管理
+    if request.method == 'POST':
+        # 假设需要将 tid 为 1 的老师赋值给某个课程的 tid 字段
+        teacher_id = request.POST.get('tid')
+        name = request.POST.get('name')
+        type = request.POST.get('type')
+        credit = request.POST.get('credit')
+        if name and type and credit:
+            try:
+                teacher_id = int(teacher_id)
+                course = Course()
+                course.name = name
+                course.type = type
+                course.credit = int(credit)
+                course.tid = Teacher.objects.get(tid=teacher_id)  # 将 Teacher 对象赋给 Course.tid 字段
+                course.save()
+                response = ResponseUtil.ok(course.tid_dict(), "课程信息插入成功")
+                return JsonResponse(response)
+            except ObjectDoesNotExist:
+                response = ResponseUtil.error("找不到 id 为 " + str(teacher_id)+" 的老师")
+                return JsonResponse(response)
+            except ValueError:
+                response = ResponseUtil.error("插入数据失败: tid_id 列不能为 null")
+                return JsonResponse(response)
+    if request.method == 'GET':
+        cid = request.GET.get('cid')
+        name = request.GET.get('name')
+        type = request.GET.get('type')
+        credit = request.GET.get('credit')
+        tid = request.GET.get('tid')
+        # 定义空查询条件
+        conditions = Q()
+        if cid:
+            conditions &= Q(cid=int(cid))
+        if name:
+            conditions &= Q(name=name)
+        if type:
+            conditions &= Q(type=type)
+        if credit:
+            conditions &= Q(credit=credit)
+        if tid:
+            tid = int(tid)
+            conditions &= Q(tid=tid)
+        # 添加非空查询条件至基本查询集
+        query = Course.objects.filter(conditions)
+        data = query.values()  # 将 QuerySet 对象转换为字典列表
+        data = list(data)  # 转换为列表以便序列化为 JSON
+        print(query)
+        response = ResponseUtil.ok(data, "课程信息查询成功")
+        return JsonResponse(response)
+    if request.method == 'DELETE':
+        parser = MultiPartParser(request.META, BytesIO(request.body), request.upload_handlers, request.encoding)
+        posdict = parser.parse()
+        cids = posdict[0]['cids']
+        cids = literal_eval(cids)
+        print(cids)
+        try:
+            info = Course.objects.filter(cid__in=cids).values()
+            data = list(info)
+            if len(data)>0:
+                Course.objects.filter(cid__in=cids).delete()
+                response = ResponseUtil.ok(data, "课程信息删除成功")
+                return JsonResponse(response)
+            else:
+                response = ResponseUtil.error("课程未找到")
+                return JsonResponse(response)
+        except:
+            response = ResponseUtil.ok("未查询到课程，删除失败")
+            return JsonResponse(response)
+    if request.method == 'PUT':
+        put = MultiPartParser(request.META, request, request.upload_handlers, request.encoding).parse()
+        # request.PUT = put[0]
+        print(put)
+        cid = put[0]['cid']
+        name = put[0]['name']
+        type = put[0]['type']
+        credit = put[0]['credit']
+        tid = put[0]['tid']
+        if cid and name and type and credit and tid:
+            Course.objects.filter(cid=cid).update(name=name, type=type, credit=credit)
+            Course.objects.filter(cid=cid).update(tid=Teacher.objects.get(tid=tid))
+            data = Course.objects.filter(cid=cid)[0].tid_dict()
+            response = ResponseUtil.ok(data, "课程信息修改成功")
+            return JsonResponse(response)
+        else:
+            response = ResponseUtil.error("课程信息修改失败，信息不全")
+            return JsonResponse(response)
\ No newline at end of file
diff --git a/EduSystemServer/teacher/views.py b/EduSystemServer/teacher/views.py
index 5441a2f..06b953b 100644
--- a/EduSystemServer/teacher/views.py
+++ b/EduSystemServer/teacher/views.py
@@ -287,22 +287,27 @@ def student_performance_management(request): # 学生成绩管理
 def course_selection(request): # 选课管理
     if request.method == 'POST':
         # 假设需要将 tid 为 1 的老师赋值给某个课程的 tid 字段
-        teacher_id = int(request.POST.get('tid'))
-        try:
-            course = Course()
-            course.name = request.POST.get('name')
-            course.type = request.POST.get('type')
-            course.credit = int(request.POST.get('credit'))
-            course.tid = Teacher.objects.get(tid=teacher_id)  # 将 Teacher 对象赋给 Course.tid 字段
-            course.save()
-            response = ResponseUtil.ok(course.tid_dict(), "课程信息插入成功")
-            return JsonResponse(response)
-        except ObjectDoesNotExist:
-            response = ResponseUtil.error("找不到 id 为 " + str(teacher_id)+" 的老师")
-            return JsonResponse(response)
-        except IntegrityError:
-            response = ResponseUtil.error("插入数据失败：tid_id 列不能为 null")
-            return JsonResponse(response)
+        teacher_id = request.POST.get('tid')
+        name = request.POST.get('name')
+        type = request.POST.get('type')
+        credit = request.POST.get('credit')
+        if name and type and credit:
+            try:
+                teacher_id = int(teacher_id)
+                course = Course()
+                course.name = name
+                course.type = type
+                course.credit = int(credit)
+                course.tid = Teacher.objects.get(tid=teacher_id)  # 将 Teacher 对象赋给 Course.tid 字段
+                course.save()
+                response = ResponseUtil.ok(course.tid_dict(), "课程信息插入成功")
+                return JsonResponse(response)
+            except ObjectDoesNotExist:
+                response = ResponseUtil.error("找不到 id 为 " + str(teacher_id)+" 的老师")
+                return JsonResponse(response)
+            except ValueError:
+                response = ResponseUtil.error("插入数据失败：tid_id 列不能为 null")
+                return JsonResponse(response)
     if request.method == 'GET':
         cid = request.GET.get('cid')
         name = request.GET.get('name')