diff --git a/server/internal/course_activity/internal/logic/course_activity/createcourseactivitylogic.go b/server/internal/course_activity/internal/logic/course_activity/createcourseactivitylogic.go
index a1c95b13..4b5300cd 100644
--- a/server/internal/course_activity/internal/logic/course_activity/createcourseactivitylogic.go
+++ b/server/internal/course_activity/internal/logic/course_activity/createcourseactivitylogic.go
@@ -5,6 +5,9 @@ package course_activity
 
 import (
 	"context"
+	"database/sql"
+	"fmt"
+	"time"
 
 	"github.com/JACKYMYPERSON/hldrCenter/config"
 	"github.com/JACKYMYPERSON/hldrCenter/internal/course_activity/internal/model"
@@ -30,7 +33,95 @@ func NewCreateCourseActivityLogic(ctx context.Context, cfg *config.Config, model
 }
 
 func (l *CreateCourseActivityLogic) CreateCourseActivity(req *types.CreateCourseActivityReq) (resp *types.CreateCourseActivityResp, err error) {
-	// todo: add your logic here and delete this line
+	// 1. 基础参数校验
+	if req.CourseId <= 0 {
+		return nil, fmt.Errorf("参数错误：课程ID必须为正整数")
+	}
+	if len(req.Title) == 0 || len(req.Title) > 255 {
+		return nil, fmt.Errorf("参数错误：活动标题不能为空且长度不超过255字符")
+	}
 
-	return
+	// 2. 可选参数校验与默认值设置
+	// 活动类型：未传递则默认1（作业），传递则校验1-4范围
+	activityType := 1
+	if req.ActivityType != 0 {
+		if req.ActivityType < 1 || req.ActivityType > 4 {
+			return nil, fmt.Errorf("参数错误：活动类型必须是1-4（1-作业/2-考试/3-讨论/4-直播）")
+		}
+		activityType = req.ActivityType
+	}
+
+	// 排序：未传递则默认0
+	sort := 0
+	if req.Sort >= 0 {
+		sort = req.Sort
+	}
+
+	// 3. 时间参数解析与适配 sql.NullTime（核心修改）
+	timeLayout := "2006-01-02 15:04:05"
+	var startTime, endTime sql.NullTime // 改为 sql.NullTime 类型
+
+	// 解析开始时间：传递则解析并标记 Valid=true，未传递则 Valid=false（数据库存NULL）
+	if req.StartTime != "" {
+		parsedTime, err := time.Parse(timeLayout, req.StartTime)
+		if err != nil {
+			return nil, fmt.Errorf("参数错误：开始时间格式不正确，需符合yyyy-MM-dd HH:mm:ss")
+		}
+		startTime = sql.NullTime{Time: parsedTime, Valid: true}
+	}
+
+	// 解析结束时间：逻辑同上
+	if req.EndTime != "" {
+		parsedTime, err := time.Parse(timeLayout, req.EndTime)
+		if err != nil {
+			return nil, fmt.Errorf("参数错误：结束时间格式不正确，需符合yyyy-MM-dd HH:mm:ss")
+		}
+		endTime = sql.NullTime{Time: parsedTime, Valid: true}
+	}
+
+	// 校验：若同时传递开始和结束时间，结束时间需晚于开始时间
+	if startTime.Valid && endTime.Valid && endTime.Time.Before(startTime.Time) {
+		return nil, fmt.Errorf("参数错误：结束时间不能早于开始时间")
+	}
+
+	// 4. 转换请求参数为Model层结构体（适配 sql.NullTime 和 int64）
+	activityModel := &model.CourseActivity{
+		CourseId:     int64(req.CourseId), // int→int64（适配数据库）
+		Title:        req.Title,
+		ActivityType: int64(activityType), // int→int64
+		Content:      stringToNullString(req.Content),
+		StartTime:    startTime,   // 直接赋值 sql.NullTime
+		EndTime:      endTime,     // 直接赋值 sql.NullTime
+		Sort:         int64(sort), // int→int64
+	}
+
+	// 5. 调用Model层插入数据
+	result, err := l.model.Insert(l.ctx, activityModel)
+	if err != nil {
+		return nil, fmt.Errorf("创建课程活动失败：%w", err)
+	}
+
+	// 6. 获取新增活动的ID
+	newId, err := result.LastInsertId()
+	if err != nil {
+		return nil, fmt.Errorf("获取新增活动ID失败：%w", err)
+	}
+
+	// 7. 构造响应
+	resp = &types.CreateCourseActivityResp{
+		Id:      int(newId), // int64→int（适配响应）
+		Message: "课程活动创建成功",
+	}
+
+	return resp, nil
+}
+
+func stringToNullString(s string) sql.NullString {
+	if s == "" {
+		return sql.NullString{Valid: false}
+	}
+	return sql.NullString{
+		String: s,
+		Valid:  true,
+	}
 }
diff --git a/server/internal/course_activity/internal/logic/course_activity/deletecourseactivitylogic.go b/server/internal/course_activity/internal/logic/course_activity/deletecourseactivitylogic.go
index 4c3e522e..89566d60 100644
--- a/server/internal/course_activity/internal/logic/course_activity/deletecourseactivitylogic.go
+++ b/server/internal/course_activity/internal/logic/course_activity/deletecourseactivitylogic.go
@@ -30,7 +30,18 @@ func NewDeleteCourseActivityLogic(ctx context.Context, cfg *config.Config, model
 }
 
 func (l *DeleteCourseActivityLogic) DeleteCourseActivity(req *types.DeleteCourseActivityReq) (resp *types.DeleteCourseActivityResp, err error) {
-	// todo: add your logic here and delete this line
+	// 将请求中的int类型ID转换为数据层需要的int64类型
+	activityID := int64(req.Id)
 
-	return
+	// 调用数据层的删除方法
+	err = l.model.Delete(l.ctx, activityID)
+	if err != nil {
+		// 若删除过程出现错误，返回错误信息
+		return nil, err
+	}
+
+	// 删除成功，返回操作结果
+	return &types.DeleteCourseActivityResp{
+		Message: "课程活动已成功删除",
+	}, nil
 }
diff --git a/server/internal/course_activity/internal/logic/course_activity/getcourseactivitylogic.go b/server/internal/course_activity/internal/logic/course_activity/getcourseactivitylogic.go
index 838e2892..bf30edeb 100644
--- a/server/internal/course_activity/internal/logic/course_activity/getcourseactivitylogic.go
+++ b/server/internal/course_activity/internal/logic/course_activity/getcourseactivitylogic.go
@@ -9,6 +9,7 @@ import (
 	"github.com/JACKYMYPERSON/hldrCenter/config"
 	"github.com/JACKYMYPERSON/hldrCenter/internal/course_activity/internal/model"
 	"github.com/JACKYMYPERSON/hldrCenter/internal/course_activity/internal/types"
+	"github.com/JACKYMYPERSON/hldrCenter/util"
 
 	"github.com/zeromicro/go-zero/core/logx"
 )
@@ -30,7 +31,28 @@ func NewGetCourseActivityLogic(ctx context.Context, cfg *config.Config, model mo
 }
 
 func (l *GetCourseActivityLogic) GetCourseActivity(req *types.GetCourseActivityReq) (resp *types.GetCourseActivityResp, err error) {
-	// todo: add your logic here and delete this line
+	// 将请求中的int类型ID转换为数据层需要的int64类型
+	activityID := int64(req.Id)
 
-	return
+	// 调用数据层方法查询活动详情
+	activity, err := l.model.FindOne(l.ctx, activityID)
+	if err != nil {
+		// 若查询出错（如未找到或数据库错误），返回错误
+		return nil, err
+	}
+
+	// 将数据层模型转换为响应结构体
+	resp = &types.GetCourseActivityResp{
+		Id:           int(activity.Id),                          // 转换int64为int
+		CourseId:     int(activity.CourseId),                    // 转换关联课程ID类型
+		Title:        activity.Title,                            // 活动标题
+		ActivityType: int(activity.ActivityType),                // 转换活动类型
+		Content:      util.NullStringToString(activity.Content), // 活动详情
+		// 假设数据层返回的是time.Time类型，这里格式化为字符串（根据实际格式调整）
+		StartTime: util.NullTimeToString(activity.StartTime),
+		EndTime:   util.NullTimeToString(activity.EndTime),
+		Sort:      int(activity.Sort), // 转换排序字段类型
+	}
+
+	return resp, nil
 }
diff --git a/server/internal/course_activity/internal/logic/course_activity/listcourseactivitylogic.go b/server/internal/course_activity/internal/logic/course_activity/listcourseactivitylogic.go
index 578147eb..5f63a92b 100644
--- a/server/internal/course_activity/internal/logic/course_activity/listcourseactivitylogic.go
+++ b/server/internal/course_activity/internal/logic/course_activity/listcourseactivitylogic.go
@@ -5,10 +5,12 @@ package course_activity
 
 import (
 	"context"
+	"strings"
 
 	"github.com/JACKYMYPERSON/hldrCenter/config"
 	"github.com/JACKYMYPERSON/hldrCenter/internal/course_activity/internal/model"
 	"github.com/JACKYMYPERSON/hldrCenter/internal/course_activity/internal/types"
+	"github.com/JACKYMYPERSON/hldrCenter/util"
 
 	"github.com/zeromicro/go-zero/core/logx"
 )
@@ -30,7 +32,67 @@ func NewListCourseActivityLogic(ctx context.Context, cfg *config.Config, model m
 }
 
 func (l *ListCourseActivityLogic) ListCourseActivity(req *types.ListCourseActivityReq) (resp *types.ListCourseActivityResp, err error) {
-	// todo: add your logic here and delete this line
+	// 1. 处理分页参数：计算偏移量（页码从1开始）
+	// 2. 构建查询条件（根据可选参数拼接WHERE子句）
+	var whereConditions []string
+	var queryArgs []interface{}
 
-	return
+	// 按课程ID筛选（若传入有效CourseId）
+	if req.CourseId > 0 {
+		whereConditions = append(whereConditions, "course_id = ?")
+		queryArgs = append(queryArgs, req.CourseId)
+	}
+
+	// 按活动类型筛选（若传入有效ActivityType，1-4）
+	if req.ActivityType >= 1 && req.ActivityType <= 4 {
+		whereConditions = append(whereConditions, "activity_type = ?")
+		queryArgs = append(queryArgs, req.ActivityType)
+	}
+
+	// 拼接WHERE子句（若有条件则添加where，多个条件用and连接）
+	whereClause := ""
+	if len(whereConditions) > 0 {
+		whereClause = "WHERE " + strings.Join(whereConditions, " AND ")
+	}
+
+	// 3. 查询符合条件的总条数（用于分页计算）
+	total, err := l.model.Count(l.ctx, whereClause, queryArgs...)
+	if err != nil {
+		return nil, err // 传递数据库查询错误
+	}
+
+	// 4. 查询当前页的活动列表数据
+	activities, err := l.model.FindAll(
+		l.ctx,
+		whereClause,
+		queryArgs..., // 这里是最后一个参数，符合语法
+	)
+	if err != nil {
+		return nil, err
+	}
+
+	// 5. 转换数据层模型为响应列表（复用单个活动的转换逻辑）
+	list := make([]types.GetCourseActivityResp, 0, len(activities))
+	for _, activity := range activities {
+		list = append(list, types.GetCourseActivityResp{
+			Id:           util.Int64ToInt(activity.Id),
+			CourseId:     util.Int64ToInt(activity.CourseId),
+			Title:        activity.Title,
+			ActivityType: util.Int64ToInt(activity.ActivityType),
+			Content:      util.NullStringToString(activity.Content),
+			StartTime:    util.NullTimeToString(activity.StartTime),
+			EndTime:      util.NullTimeToString(activity.EndTime),
+			Sort:         util.Int64ToInt(activity.Sort),
+		})
+	}
+
+	// 6. 构建并返回响应
+	resp = &types.ListCourseActivityResp{
+		Total:    total,        // 总条数
+		List:     list,         // 转换后的活动列表
+		Page:     req.Page,     // 当前页码（透传请求参数）
+		PageSize: req.PageSize, // 每页条数（透传请求参数）
+	}
+
+	return resp, nil
 }
diff --git a/server/internal/course_activity/internal/logic/course_activity/updatecourseactivitylogic.go b/server/internal/course_activity/internal/logic/course_activity/updatecourseactivitylogic.go
index 15894188..a7008a67 100644
--- a/server/internal/course_activity/internal/logic/course_activity/updatecourseactivitylogic.go
+++ b/server/internal/course_activity/internal/logic/course_activity/updatecourseactivitylogic.go
@@ -5,6 +5,10 @@ package course_activity
 
 import (
 	"context"
+	"database/sql"
+	"errors"
+	"fmt"
+	"time"
 
 	"github.com/JACKYMYPERSON/hldrCenter/config"
 	"github.com/JACKYMYPERSON/hldrCenter/internal/course_activity/internal/model"
@@ -30,7 +34,83 @@ func NewUpdateCourseActivityLogic(ctx context.Context, cfg *config.Config, model
 }
 
 func (l *UpdateCourseActivityLogic) UpdateCourseActivity(req *types.UpdateCourseActivityReq) (resp *types.UpdateCourseActivityResp, err error) {
-	// todo: add your logic here and delete this line
+	// 1. 转换活动ID为数据层所需的int64类型
+	activityID := int64(req.Id)
 
-	return
+	// 2. 查询原始活动信息（确保活动存在，用于保留未更新字段的原始值）
+	original, err := l.model.FindOne(l.ctx, activityID)
+	if err != nil {
+		if errors.Is(err, errors.New("resource not found")) {
+			return nil, fmt.Errorf("活动不存在（ID: %d）", req.Id)
+		}
+		return nil, fmt.Errorf("查询活动信息失败: %v", err)
+	}
+
+	// 3. 处理开始时间（字符串转sql.NullTime）
+	var startTime sql.NullTime
+	if req.StartTime != "" {
+		// 解析请求中的时间字符串
+		parsedTime, err := time.Parse("2006-01-02 15:04:05", req.StartTime)
+		if err != nil {
+			return nil, fmt.Errorf("开始时间格式错误（需符合2006-01-02 15:04:05）: %v", err)
+		}
+		startTime = sql.NullTime{Time: parsedTime, Valid: true} // 标记为有效时间
+	} else {
+		startTime = original.StartTime // 未提供则沿用原始值
+	}
+
+	// 4. 处理结束时间（逻辑同上）
+	var endTime sql.NullTime
+	if req.EndTime != "" {
+		parsedTime, err := time.Parse("2006-01-02 15:04:05", req.EndTime)
+		if err != nil {
+			return nil, fmt.Errorf("结束时间格式错误（需符合2006-01-02 15:04:05）: %v", err)
+		}
+		endTime = sql.NullTime{Time: parsedTime, Valid: true}
+	} else {
+		endTime = original.EndTime // 未提供则沿用原始值
+	}
+
+	// 5. 构建更新数据（基于原始数据，覆盖请求中提供的字段）
+	updateData := &model.CourseActivity{
+		Id:           activityID,            // 主键ID（必须保留，用于WHERE条件）
+		CourseId:     original.CourseId,     // 默认沿用原始课程ID
+		Title:        original.Title,        // 默认沿用原始标题
+		ActivityType: original.ActivityType, // 默认沿用原始活动类型
+		Content:      original.Content,      // 默认沿用原始详情
+		StartTime:    startTime,             // 处理后的开始时间（新值或原始值）
+		EndTime:      endTime,               // 处理后的结束时间（新值或原始值）
+		Sort:         original.Sort,         // 默认沿用原始排序
+	}
+
+	// 6. 覆盖需要更新的字段（仅处理请求中提供的有效值）
+	if req.CourseId != 0 {
+		// 课程ID不为0时更新（int转int64）
+		updateData.CourseId = int64(req.CourseId)
+	}
+	if req.Title != "" {
+		// 标题非空时更新（直接赋值string）
+		updateData.Title = req.Title
+	}
+	if req.ActivityType >= 1 && req.ActivityType <= 4 {
+		// 活动类型在有效范围（1-4）时更新（int转int64）
+		updateData.ActivityType = int64(req.ActivityType)
+	}
+	// 详情字段无论是否为空，均按请求值更新（转为sql.NullString）
+	updateData.Content = sql.NullString{String: req.Content, Valid: true}
+	if req.Sort >= 0 {
+		// 排序值非负时更新（int转int64）
+		updateData.Sort = int64(req.Sort)
+	}
+
+	// 7. 调用数据层执行更新
+	err = l.model.Update(l.ctx, updateData)
+	if err != nil {
+		return nil, fmt.Errorf("更新活动失败: %v", err)
+	}
+
+	// 8. 返回成功响应
+	return &types.UpdateCourseActivityResp{
+		Message: fmt.Sprintf("活动（ID: %d）更新成功", req.Id),
+	}, nil
 }
diff --git a/server/internal/course_activity/internal/model/courseactivitymodel_gen.go b/server/internal/course_activity/internal/model/courseactivitymodel_gen.go
index 72faf33e..1803397f 100644
--- a/server/internal/course_activity/internal/model/courseactivitymodel_gen.go
+++ b/server/internal/course_activity/internal/model/courseactivitymodel_gen.go
@@ -28,6 +28,12 @@ type (
 		FindOne(ctx context.Context, id int64) (*CourseActivity, error)
 		Update(ctx context.Context, data *CourseActivity) error
 		Delete(ctx context.Context, id int64) error
+		Count(ctx context.Context, whereClause string, args ...interface{}) (int, error)
+		FindAll(
+			ctx context.Context,
+			whereClause string,
+			args ...interface{}, // 可变参数作为最后一个参数，接收所有参数（筛选+分页）
+		) ([]*CourseActivity, error)
 	}
 
 	defaultCourseActivityModel struct {
@@ -86,6 +92,36 @@ func (m *defaultCourseActivityModel) Update(ctx context.Context, data *CourseAct
 	return err
 }
 
+// 数据层CourseActivityModel的Count方法：统计符合条件的总条数
+func (m *defaultCourseActivityModel) Count(ctx context.Context, whereClause string, args ...interface{}) (int, error) {
+	query := fmt.Sprintf("SELECT COUNT(*) FROM %s %s", m.table, whereClause)
+	var total int
+	err := m.conn.QueryRowCtx(ctx, &total, query, args...)
+	return total, err
+}
+
+// 数据层CourseActivityModel的FindAll方法：查询符合条件的列表数据
+func (m *defaultCourseActivityModel) FindAll(
+	ctx context.Context,
+	whereClause string,
+	args ...interface{}, // 可变参数作为最后一个参数，接收所有参数（筛选+分页）
+) ([]*CourseActivity, error) {
+	// SQL中添加分页：LIMIT ? OFFSET ?（注意参数顺序与queryArgs一致）
+	query := fmt.Sprintf(
+		"SELECT %s FROM %s %s ORDER BY sort DESC LIMIT ? OFFSET ?",
+		courseActivityRows, // 预定义的查询字段
+		m.table,
+		whereClause,
+	)
+
+	// 执行查询（args包含所有参数，...展开后是最后一个实参，符合语法）
+	var activities []*CourseActivity
+	err := m.conn.QueryRowsCtx(ctx, &activities, query, args...)
+	if err != nil {
+		return nil, err
+	}
+	return activities, nil
+}
 func (m *defaultCourseActivityModel) tableName() string {
 	return m.table
 }
diff --git a/server/internal/course_resource/internal/logic/course_resource/createcourseresourcelogic.go b/server/internal/course_resource/internal/logic/course_resource/createcourseresourcelogic.go
index 01ec4bf1..43de6a94 100644
--- a/server/internal/course_resource/internal/logic/course_resource/createcourseresourcelogic.go
+++ b/server/internal/course_resource/internal/logic/course_resource/createcourseresourcelogic.go
@@ -5,6 +5,7 @@ package course_resource
 
 import (
 	"context"
+	"fmt"
 
 	"github.com/JACKYMYPERSON/hldrCenter/config"
 	"github.com/JACKYMYPERSON/hldrCenter/internal/course_resource/internal/model"
@@ -30,7 +31,54 @@ func NewCreateCourseResourceLogic(ctx context.Context, cfg *config.Config, model
 }
 
 func (l *CreateCourseResourceLogic) CreateCourseResource(req *types.CreateCourseResourceReq) (resp *types.CreateCourseResourceResp, err error) {
-	// todo: add your logic here and delete this line
+	// 1. 校验必填参数
+	if req.CourseId <= 0 {
+		return nil, fmt.Errorf("参数错误：课程ID必须为正整数")
+	}
+	if len(req.Title) == 0 || len(req.Title) > 255 {
+		return nil, fmt.Errorf("参数错误：资源标题不能为空且长度不超过255字符")
+	}
+	if len(req.ResourceUrl) == 0 || len(req.ResourceUrl) > 512 {
+		return nil, fmt.Errorf("参数错误：资源URL不能为空且长度不超过512字符")
+	}
 
-	return
+	// 2. 处理可选参数默认值
+	size := int64(0)
+	if req.Size >= 0 {
+		size = int64(req.Size) // 适配int→int64（数据库字段常规类型）
+	}
+
+	sort := int64(0)
+	if req.Sort >= 0 {
+		sort = int64(req.Sort) // 适配int→int64
+	}
+
+	// 3. 转换请求参数为Model层结构体
+	resourceModel := &model.CourseResource{
+		CourseId:    int64(req.CourseId), // 课程ID：int→int64
+		Title:       req.Title,
+		ResourceUrl: req.ResourceUrl,
+		Size:        size, // 资源大小（默认0）
+		Sort:        sort, // 排序（默认0）
+	}
+
+	// 4. 调用Model层执行插入
+	result, err := l.model.Insert(l.ctx, resourceModel)
+	if err != nil {
+		return nil, fmt.Errorf("创建课程资源失败：%w", err)
+	}
+
+	// 5. 获取新增资源的主键ID
+	newId, err := result.LastInsertId()
+	if err != nil {
+		return nil, fmt.Errorf("获取新增资源ID失败：%w", err)
+	}
+
+	// 6. 构造响应结果
+	resp = &types.CreateCourseResourceResp{
+		Id:      int(newId), // int64→int（适配响应结构体）
+		Message: "课程资源创建成功",
+	}
+
+	return resp, nil
 }
diff --git a/server/internal/course_resource/internal/logic/course_resource/deletecourseresourcelogic.go b/server/internal/course_resource/internal/logic/course_resource/deletecourseresourcelogic.go
index a4c9f942..97f64fd0 100644
--- a/server/internal/course_resource/internal/logic/course_resource/deletecourseresourcelogic.go
+++ b/server/internal/course_resource/internal/logic/course_resource/deletecourseresourcelogic.go
@@ -5,10 +5,12 @@ package course_resource
 
 import (
 	"context"
+	"fmt"
 
 	"github.com/JACKYMYPERSON/hldrCenter/config"
 	"github.com/JACKYMYPERSON/hldrCenter/internal/course_resource/internal/model"
 	"github.com/JACKYMYPERSON/hldrCenter/internal/course_resource/internal/types"
+	"github.com/zeromicro/go-zero/core/stores/sqlx"
 
 	"github.com/zeromicro/go-zero/core/logx"
 )
@@ -30,7 +32,32 @@ func NewDeleteCourseResourceLogic(ctx context.Context, cfg *config.Config, model
 }
 
 func (l *DeleteCourseResourceLogic) DeleteCourseResource(req *types.DeleteCourseResourceReq) (resp *types.DeleteCourseResourceResp, err error) {
-	// todo: add your logic here and delete this line
+	// 1. 参数校验：确保资源ID为正整数
+	if req.Id <= 0 {
+		return nil, fmt.Errorf("参数错误：资源ID必须为正整数")
+	}
+	resourceId := int64(req.Id) // 转换为int64（适配Model层字段类型）
 
-	return
+	// 2. 检查资源是否存在（避免删除不存在的记录）
+	_, err = l.model.FindOne(l.ctx, resourceId)
+	if err != nil {
+		if err == model.ErrNotFound || err == sqlx.ErrNotFound {
+			return nil, fmt.Errorf("删除失败：该课程资源不存在或已被删除")
+		}
+		// 其他查询错误（如数据库连接异常）
+		return nil, fmt.Errorf("查询资源信息失败：%w", err)
+	}
+
+	// 3. 调用Model层执行删除操作
+	err = l.model.Delete(l.ctx, resourceId)
+	if err != nil {
+		return nil, fmt.Errorf("删除课程资源失败：%w", err)
+	}
+
+	// 4. 构造成功响应
+	resp = &types.DeleteCourseResourceResp{
+		Message: "课程资源删除成功",
+	}
+
+	return resp, nil
 }
diff --git a/server/internal/course_resource/internal/logic/course_resource/getcourseresourcelogic.go b/server/internal/course_resource/internal/logic/course_resource/getcourseresourcelogic.go
index 095b50bf..3bc0304e 100644
--- a/server/internal/course_resource/internal/logic/course_resource/getcourseresourcelogic.go
+++ b/server/internal/course_resource/internal/logic/course_resource/getcourseresourcelogic.go
@@ -5,10 +5,12 @@ package course_resource
 
 import (
 	"context"
+	"fmt"
 
 	"github.com/JACKYMYPERSON/hldrCenter/config"
 	"github.com/JACKYMYPERSON/hldrCenter/internal/course_resource/internal/model"
 	"github.com/JACKYMYPERSON/hldrCenter/internal/course_resource/internal/types"
+	"github.com/zeromicro/go-zero/core/stores/sqlx"
 
 	"github.com/zeromicro/go-zero/core/logx"
 )
@@ -30,7 +32,31 @@ func NewGetCourseResourceLogic(ctx context.Context, cfg *config.Config, model mo
 }
 
 func (l *GetCourseResourceLogic) GetCourseResource(req *types.GetCourseResourceReq) (resp *types.GetCourseResourceResp, err error) {
-	// todo: add your logic here and delete this line
+	// 1. 参数校验：确保资源ID为正整数
+	if req.Id <= 0 {
+		return nil, fmt.Errorf("参数错误：资源ID必须为正整数")
+	}
+	resourceId := int64(req.Id) // 转换为int64（适配Model层字段类型）
 
-	return
+	// 2. 调用Model层查询资源详情
+	resourceModel, err := l.model.FindOne(l.ctx, resourceId)
+	if err != nil {
+		if err == model.ErrNotFound || err == sqlx.ErrNotFound {
+			return nil, fmt.Errorf("查询失败：该课程资源不存在或已被删除")
+		}
+		// 其他查询错误（如数据库连接异常）
+		return nil, fmt.Errorf("查询课程资源失败：%w", err)
+	}
+
+	// 3. 转换Model数据为响应结构体（处理类型适配）
+	resp = &types.GetCourseResourceResp{
+		Id:          int(resourceModel.Id),       // Model层Id为int64，转换为int
+		CourseId:    int(resourceModel.CourseId), // 关联课程ID：int64→int
+		Title:       resourceModel.Title,         // 标题直接复用
+		ResourceUrl: resourceModel.ResourceUrl,   // 资源URL直接复用
+		Size:        int(resourceModel.Size),     // 资源大小：int64→int
+		Sort:        int(resourceModel.Sort),     // 排序：int64→int
+	}
+
+	return resp, nil
 }
diff --git a/server/internal/course_resource/internal/logic/course_resource/listcourseresourcelogic.go b/server/internal/course_resource/internal/logic/course_resource/listcourseresourcelogic.go
index 36316977..dc45167e 100644
--- a/server/internal/course_resource/internal/logic/course_resource/listcourseresourcelogic.go
+++ b/server/internal/course_resource/internal/logic/course_resource/listcourseresourcelogic.go
@@ -5,6 +5,7 @@ package course_resource
 
 import (
 	"context"
+	"fmt"
 
 	"github.com/JACKYMYPERSON/hldrCenter/config"
 	"github.com/JACKYMYPERSON/hldrCenter/internal/course_resource/internal/model"
@@ -30,7 +31,54 @@ func NewListCourseResourceLogic(ctx context.Context, cfg *config.Config, model m
 }
 
 func (l *ListCourseResourceLogic) ListCourseResource(req *types.ListCourseResourceReq) (resp *types.ListCourseResourceResp, err error) {
-	// todo: add your logic here and delete this line
+	// 1. 参数校验（补充validate标签外的业务校验）
+	if req.Page < 1 {
+		return nil, fmt.Errorf("参数错误：页码必须≥1")
+	}
+	if req.PageSize < 1 || req.PageSize > 100 {
+		return nil, fmt.Errorf("参数错误：每页条数必须在1-100之间")
+	}
 
-	return
+	// 2. 计算分页参数（offset = (page-1)*pageSize）
+	offset := (req.Page - 1) * req.PageSize
+
+	// 3. 调用Model层查询总条数（按CourseId筛选，CourseId=0时查全部）
+	total, err := l.model.CountByCourseId(l.ctx, int64(req.CourseId))
+	if err != nil {
+		return nil, fmt.Errorf("查询资源总条数失败：%w", err)
+	}
+
+	// 4. 调用Model层查询当前页数据
+	resources, err := l.model.FindByCourseIdWithPage(
+		l.ctx,
+		int64(req.CourseId), // 课程ID（0表示查全部）
+		req.PageSize,        // 每页条数
+		offset,              // 偏移量
+	)
+	if err != nil {
+		return nil, fmt.Errorf("查询资源列表失败：%w", err)
+	}
+
+	// 5. 转换Model数据为响应列表（适配GetCourseResourceResp）
+	var list []types.GetCourseResourceResp
+	for _, res := range resources {
+		list = append(list, types.GetCourseResourceResp{
+			Id:          int(res.Id),       // int64→int
+			CourseId:    int(res.CourseId), // int64→int
+			Title:       res.Title,
+			ResourceUrl: res.ResourceUrl,
+			Size:        int(res.Size), // int64→int
+			Sort:        int(res.Sort), // int64→int
+		})
+	}
+
+	// 6. 构造响应
+	resp = &types.ListCourseResourceResp{
+		Total:    int(total),   // 总条数（int64→int）
+		List:     list,         // 资源列表
+		Page:     req.Page,     // 当前页码
+		PageSize: req.PageSize, // 每页条数
+	}
+
+	return resp, nil
 }
diff --git a/server/internal/course_resource/internal/logic/course_resource/updatecourseresourcelogic.go b/server/internal/course_resource/internal/logic/course_resource/updatecourseresourcelogic.go
index b29a204e..02e45a03 100644
--- a/server/internal/course_resource/internal/logic/course_resource/updatecourseresourcelogic.go
+++ b/server/internal/course_resource/internal/logic/course_resource/updatecourseresourcelogic.go
@@ -5,6 +5,8 @@ package course_resource
 
 import (
 	"context"
+	"errors"
+	"fmt"
 
 	"github.com/JACKYMYPERSON/hldrCenter/config"
 	"github.com/JACKYMYPERSON/hldrCenter/internal/course_resource/internal/model"
@@ -30,7 +32,53 @@ func NewUpdateCourseResourceLogic(ctx context.Context, cfg *config.Config, model
 }
 
 func (l *UpdateCourseResourceLogic) UpdateCourseResource(req *types.UpdateCourseResourceReq) (resp *types.UpdateCourseResourceResp, err error) {
-	// todo: add your logic here and delete this line
+	// 1. 转换资源ID为数据层所需的int64类型
+	resourceID := int64(req.Id)
 
-	return
+	// 2. 查询原始资源信息（确保资源存在，保留未更新字段原始值）
+	original, err := l.model.FindOne(l.ctx, resourceID)
+	if err != nil {
+		if errors.Is(err, errors.New("resource not found")) {
+			return nil, fmt.Errorf("课程资源不存在（ID: %d）", req.Id)
+		}
+		return nil, fmt.Errorf("查询课程资源失败: %v", err)
+	}
+
+	// 3. 构建更新数据（基于原始数据，覆盖请求中有效字段）
+	updateData := &model.CourseResource{
+		Id:          resourceID,           // 主键ID（WHERE条件，必须保留）
+		CourseId:    original.CourseId,    // 默认沿用原始课程ID
+		Title:       original.Title,       // 默认沿用原始标题
+		ResourceUrl: original.ResourceUrl, // 默认沿用原始资源链接
+		Size:        original.Size,        // 默认沿用原始资源大小
+		Sort:        original.Sort,        // 默认沿用原始排序
+	}
+
+	// 4. 覆盖需要更新的字段（仅处理请求中提供的有效值）
+	if req.CourseId != 0 {
+		updateData.CourseId = int64(req.CourseId) // int转int64
+	}
+	if req.Title != "" {
+		updateData.Title = req.Title // 字符串直接赋值
+	}
+	if req.ResourceUrl != "" {
+		updateData.ResourceUrl = req.ResourceUrl // 资源链接直接赋值
+	}
+	if req.Size >= 0 {
+		updateData.Size = int64(req.Size) // int转int64（资源大小非负）
+	}
+	if req.Sort >= 0 {
+		updateData.Sort = int64(req.Sort) // int转int64（排序非负）
+	}
+
+	// 5. 调用数据层执行更新
+	err = l.model.Update(l.ctx, updateData)
+	if err != nil {
+		return nil, fmt.Errorf("更新课程资源失败: %v", err)
+	}
+
+	// 6. 返回成功响应
+	return &types.UpdateCourseResourceResp{
+		Message: fmt.Sprintf("课程资源（ID: %d）更新成功", req.Id),
+	}, nil
 }
diff --git a/server/internal/course_resource/internal/model/courseresourcemodel_gen.go b/server/internal/course_resource/internal/model/courseresourcemodel_gen.go
index d94900c3..964c9cf0 100644
--- a/server/internal/course_resource/internal/model/courseresourcemodel_gen.go
+++ b/server/internal/course_resource/internal/model/courseresourcemodel_gen.go
@@ -28,6 +28,12 @@ type (
 		FindOne(ctx context.Context, id int64) (*CourseResource, error)
 		Update(ctx context.Context, data *CourseResource) error
 		Delete(ctx context.Context, id int64) error
+		CountByCourseId(ctx context.Context, courseId int64) (int64, error)
+		FindByCourseIdWithPage(
+			ctx context.Context,
+			courseId int64,
+			pageSize, offset int,
+		) ([]*CourseResource, error)
 	}
 
 	defaultCourseResourceModel struct {
@@ -84,6 +90,52 @@ func (m *defaultCourseResourceModel) Update(ctx context.Context, data *CourseRes
 	return err
 }
 
+func (m *defaultCourseResourceModel) CountByCourseId(ctx context.Context, courseId int64) (int64, error) {
+	var count int64
+	// 构造查询条件：courseId=0时查全部，否则按course_id筛选
+	if courseId == 0 {
+		query := fmt.Sprintf("select count(*) from %s", m.table)
+		err := m.conn.QueryRowCtx(ctx, &count, query)
+		return count, err
+	} else {
+		query := fmt.Sprintf("select count(*) from %s where `course_id` = ?", m.table)
+		err := m.conn.QueryRowCtx(ctx, &count, query, courseId)
+		return count, err
+	}
+}
+
+// FindByCourseIdWithPage 实现按课程ID分页查询
+func (m *defaultCourseResourceModel) FindByCourseIdWithPage(
+	ctx context.Context,
+	courseId int64,
+	pageSize, offset int,
+) ([]*CourseResource, error) {
+	var resources []*CourseResource
+	// 构造查询SQL：支持筛选+排序+分页（按sort升序，确保资源有序）
+	baseQuery := fmt.Sprintf("select %s from %s", courseResourceRows, m.table)
+	sortQuery := " order by `sort` asc limit ?, ?" // 按sort升序，限制条数和偏移量
+
+	var query string
+	var args []interface{}
+
+	if courseId == 0 {
+		// 查全部资源：无where条件
+		query = baseQuery + sortQuery
+		args = []interface{}{offset, pageSize}
+	} else {
+		// 按课程ID筛选
+		query = baseQuery + " where `course_id` = ?" + sortQuery
+		args = []interface{}{courseId, offset, pageSize}
+	}
+
+	// 执行查询
+	err := m.conn.QueryRowsCtx(ctx, &resources, query, args...)
+	if err != nil {
+		return nil, err
+	}
+	return resources, nil
+}
+
 func (m *defaultCourseResourceModel) tableName() string {
 	return m.table
 }
diff --git a/server/internal/course_teacher/internal/logic/course_teacher/createcourseteacherlogic.go b/server/internal/course_teacher/internal/logic/course_teacher/createcourseteacherlogic.go
index 1d101a4c..ecb103a0 100644
--- a/server/internal/course_teacher/internal/logic/course_teacher/createcourseteacherlogic.go
+++ b/server/internal/course_teacher/internal/logic/course_teacher/createcourseteacherlogic.go
@@ -5,10 +5,12 @@ package course_teacher
 
 import (
 	"context"
+	"fmt"
 
 	"github.com/JACKYMYPERSON/hldrCenter/config"
 	"github.com/JACKYMYPERSON/hldrCenter/internal/course_teacher/internal/model"
 	"github.com/JACKYMYPERSON/hldrCenter/internal/course_teacher/internal/types"
+	"github.com/JACKYMYPERSON/hldrCenter/util"
 
 	"github.com/zeromicro/go-zero/core/logx"
 )
@@ -30,7 +32,59 @@ func NewCreateCourseTeacherLogic(ctx context.Context, cfg *config.Config, model
 }
 
 func (l *CreateCourseTeacherLogic) CreateCourseTeacher(req *types.CreateCourseTeacherReq) (resp *types.CreateCourseTeacherResp, err error) {
-	// todo: add your logic here and delete this line
+	// 1. 校验必填参数
+	if req.CourseId <= 0 {
+		return nil, fmt.Errorf("参数错误：课程ID必须为正整数")
+	}
+	if req.TeacherId <= 0 {
+		return nil, fmt.Errorf("参数错误：教师ID必须为正整数")
+	}
+	if len(req.Name) == 0 || len(req.Name) > 100 {
+		return nil, fmt.Errorf("参数错误：教师姓名不能为空且长度不超过100字符")
+	}
 
-	return
+	// 2. 校验可选参数
+	if len(req.Title) > 200 {
+		return nil, fmt.Errorf("参数错误：教师头衔长度不能超过200字符")
+	}
+	if len(req.Avatar) > 512 {
+		return nil, fmt.Errorf("参数错误：头像URL长度不能超过512字符")
+	}
+
+	// 3. 处理可选参数默认值（Sort默认0）
+	sort := int64(0)
+	if req.Sort >= 0 {
+		sort = int64(req.Sort) // 适配int→int64（Model层字段类型）
+	}
+
+	// 4. 转换请求参数为Model层结构体
+	courseTeacher := &model.CourseTeacher{
+		CourseId:  int64(req.CourseId),  // 课程ID：int→int64
+		TeacherId: int64(req.TeacherId), // 教师ID：int→int64
+		Name:      req.Name,
+		Title:     req.Title,
+		Avatar:    req.Avatar,
+		Intro:     util.StringToNullString(req.Intro),
+		Sort:      sort, // 排序：int→int64
+	}
+
+	// 5. 调用Model层执行插入
+	result, err := l.model.Insert(l.ctx, courseTeacher)
+	if err != nil {
+		return nil, fmt.Errorf("创建课程-教师关联失败：%w", err)
+	}
+
+	// 6. 获取新增关联记录的ID
+	newId, err := result.LastInsertId()
+	if err != nil {
+		return nil, fmt.Errorf("获取新增关联ID失败：%w", err)
+	}
+
+	// 7. 构造响应
+	resp = &types.CreateCourseTeacherResp{
+		Id:      int(newId), // int64→int（适配响应结构体）
+		Message: "课程-教师关联创建成功",
+	}
+
+	return resp, nil
 }
diff --git a/server/internal/course_teacher/internal/logic/course_teacher/deletecourseteacherlogic.go b/server/internal/course_teacher/internal/logic/course_teacher/deletecourseteacherlogic.go
index 940e3501..8ff4dfe1 100644
--- a/server/internal/course_teacher/internal/logic/course_teacher/deletecourseteacherlogic.go
+++ b/server/internal/course_teacher/internal/logic/course_teacher/deletecourseteacherlogic.go
@@ -5,6 +5,7 @@ package course_teacher
 
 import (
 	"context"
+	"fmt"
 
 	"github.com/JACKYMYPERSON/hldrCenter/config"
 	"github.com/JACKYMYPERSON/hldrCenter/internal/course_teacher/internal/model"
@@ -30,7 +31,18 @@ func NewDeleteCourseTeacherLogic(ctx context.Context, cfg *config.Config, model
 }
 
 func (l *DeleteCourseTeacherLogic) DeleteCourseTeacher(req *types.DeleteCourseTeacherReq) (resp *types.DeleteCourseTeacherResp, err error) {
-	// todo: add your logic here and delete this line
+	// 1. 将请求中的int类型ID转换为数据层所需的int64类型
+	teacherID := int64(req.Id)
 
-	return
+	// 2. 调用数据层的删除方法执行删除操作
+	err = l.model.Delete(l.ctx, teacherID)
+	if err != nil {
+		// 若删除过程中出现数据库错误（如连接异常等），返回错误信息
+		return nil, fmt.Errorf("删除教学团队关联失败: %v", err)
+	}
+
+	// 3. 删除成功，返回操作结果
+	return &types.DeleteCourseTeacherResp{
+		Message: fmt.Sprintf("教学团队关联（ID: %d）已成功删除", req.Id),
+	}, nil
 }
diff --git a/server/internal/course_teacher/internal/logic/course_teacher/getcourseteacherlogic.go b/server/internal/course_teacher/internal/logic/course_teacher/getcourseteacherlogic.go
index f6d05ec4..7833423b 100644
--- a/server/internal/course_teacher/internal/logic/course_teacher/getcourseteacherlogic.go
+++ b/server/internal/course_teacher/internal/logic/course_teacher/getcourseteacherlogic.go
@@ -5,6 +5,9 @@ package course_teacher
 
 import (
 	"context"
+	"database/sql"
+	"errors"
+	"fmt"
 
 	"github.com/JACKYMYPERSON/hldrCenter/config"
 	"github.com/JACKYMYPERSON/hldrCenter/internal/course_teacher/internal/model"
@@ -30,7 +33,38 @@ func NewGetCourseTeacherLogic(ctx context.Context, cfg *config.Config, model mod
 }
 
 func (l *GetCourseTeacherLogic) GetCourseTeacher(req *types.GetCourseTeacherReq) (resp *types.GetCourseTeacherResp, err error) {
-	// todo: add your logic here and delete this line
+	// 1. 转换请求ID类型（int -> int64，适配数据层方法）
+	teacherID := int64(req.Id)
 
-	return
+	// 2. 调用数据层查询单个关联信息
+	courseTeacher, err := l.model.FindOne(l.ctx, teacherID)
+	if err != nil {
+		// 处理资源不存在的错误
+		if errors.Is(err, errors.New("resource not found")) {
+			return nil, fmt.Errorf("教学团队关联不存在（ID: %d）", req.Id)
+		}
+		// 处理其他数据库错误
+		return nil, fmt.Errorf("查询教学团队关联失败: %v", err)
+	}
+
+	// 3. 转换数据层模型到响应结构体（处理类型转换）
+	resp = &types.GetCourseTeacherResp{
+		Id:        int(courseTeacher.Id),                   // int64 -> int
+		CourseId:  int(courseTeacher.CourseId),             // int64 -> int
+		TeacherId: int(courseTeacher.TeacherId),            // int64 -> int
+		Name:      courseTeacher.Name,                      // string直接赋值
+		Title:     courseTeacher.Title,                     // string直接赋值
+		Avatar:    courseTeacher.Avatar,                    // string直接赋值
+		Intro:     NullStringToString(courseTeacher.Intro), // string直接赋值
+		Sort:      int(courseTeacher.Sort),                 // int64 -> int
+	}
+
+	return resp, nil
+}
+
+func NullStringToString(ns sql.NullString) string {
+	if ns.Valid {
+		return ns.String
+	}
+	return ""
 }
diff --git a/server/internal/course_teacher/internal/logic/course_teacher/listcourseteacherlogic.go b/server/internal/course_teacher/internal/logic/course_teacher/listcourseteacherlogic.go
index 21fe19c9..e13032d2 100644
--- a/server/internal/course_teacher/internal/logic/course_teacher/listcourseteacherlogic.go
+++ b/server/internal/course_teacher/internal/logic/course_teacher/listcourseteacherlogic.go
@@ -5,6 +5,8 @@ package course_teacher
 
 import (
 	"context"
+	"database/sql"
+	"fmt"
 
 	"github.com/JACKYMYPERSON/hldrCenter/config"
 	"github.com/JACKYMYPERSON/hldrCenter/internal/course_teacher/internal/model"
@@ -30,7 +32,73 @@ func NewListCourseTeacherLogic(ctx context.Context, cfg *config.Config, model mo
 }
 
 func (l *ListCourseTeacherLogic) ListCourseTeacher(req *types.ListCourseTeacherReq) (resp *types.ListCourseTeacherResp, err error) {
-	// todo: add your logic here and delete this line
+	// 1. 参数校验（补充validate标签外的业务校验）
+	if req.Page < 1 {
+		return nil, fmt.Errorf("参数错误：页码必须≥1")
+	}
+	if req.PageSize < 1 || req.PageSize > 100 {
+		return nil, fmt.Errorf("参数错误：每页条数必须在1-100之间")
+	}
 
-	return
+	// 2. 转换筛选参数为int64（适配Model层字段类型）
+	courseId := int64(req.CourseId)
+	teacherId := int64(req.TeacherId)
+
+	// 3. 计算分页参数（offset = (page-1)*pageSize）
+	offset := (req.Page - 1) * req.PageSize
+
+	// 4. 调用Model层查询总条数（按筛选条件）
+	total, err := l.model.CountByConditions(l.ctx, courseId, teacherId)
+	if err != nil {
+		return nil, fmt.Errorf("查询教师总条数失败：%w", err)
+	}
+
+	// 5. 调用Model层查询当前页数据（按筛选条件+分页+排序）
+	teachers, err := l.model.FindByConditionsWithPage(
+		l.ctx,
+		courseId,     // 课程ID筛选（0表示不筛选）
+		teacherId,    // 教师ID筛选（0表示不筛选）
+		req.PageSize, // 每页条数
+		offset,       // 偏移量
+	)
+	if err != nil {
+		return nil, fmt.Errorf("查询教师列表失败：%w", err)
+	}
+
+	// 6. 转换Model数据为响应列表（处理sql.NullString和int64→int）
+	var list []types.GetCourseTeacherResp
+	for _, t := range teachers {
+		list = append(list, types.GetCourseTeacherResp{
+			Id:        int(t.Id),        // int64→int
+			CourseId:  int(t.CourseId),  // int64→int
+			TeacherId: int(t.TeacherId), // int64→int
+			Name:      t.Name,
+			Title:     t.Title,                     // sql.NullString→string
+			Avatar:    t.Avatar,                    // sql.NullString→string
+			Intro:     NullStringToString(t.Intro), // sql.NullString→string
+			Sort:      int(t.Sort),                 // int64→int
+		})
+	}
+
+	// 7. 构造响应
+	resp = &types.ListCourseTeacherResp{
+		Total:    int(total), // 总条数（int64→int）
+		List:     list,
+		Page:     req.Page,
+		PageSize: req.PageSize,
+	}
+
+	return resp, nil
+}
+
+func StringToNullString(s string) sql.NullString {
+	if s != "" {
+		return sql.NullString{
+			String: s,
+			Valid:  true,
+		}
+	}
+	return sql.NullString{
+		Valid: false, // 空字符串时标记为无效，数据库存 NULL
+	}
 }
diff --git a/server/internal/course_teacher/internal/model/courseteachermodel_gen.go b/server/internal/course_teacher/internal/model/courseteachermodel_gen.go
index 1b1aaf56..09c31671 100644
--- a/server/internal/course_teacher/internal/model/courseteachermodel_gen.go
+++ b/server/internal/course_teacher/internal/model/courseteachermodel_gen.go
@@ -28,6 +28,12 @@ type (
 		FindOne(ctx context.Context, id int64) (*CourseTeacher, error)
 		Update(ctx context.Context, data *CourseTeacher) error
 		Delete(ctx context.Context, id int64) error
+		CountByConditions(ctx context.Context, courseId, teacherId int64) (int64, error)
+		FindByConditionsWithPage(
+			ctx context.Context,
+			courseId, teacherId int64,
+			pageSize, offset int,
+		) ([]*CourseTeacher, error)
 	}
 
 	defaultCourseTeacherModel struct {
@@ -86,6 +92,74 @@ func (m *defaultCourseTeacherModel) Update(ctx context.Context, data *CourseTeac
 	return err
 }
 
+func (m *defaultCourseTeacherModel) CountByConditions(ctx context.Context, courseId, teacherId int64) (int64, error) {
+	var count int64
+	baseQuery := fmt.Sprintf("select count(*) from %s", m.table)
+
+	// 构造筛选条件（支持单条件/多条件/无筛选）
+	var whereClauses []string
+	var args []interface{}
+
+	if courseId > 0 {
+		whereClauses = append(whereClauses, "`course_id` = ?")
+		args = append(args, courseId)
+	}
+	if teacherId > 0 {
+		whereClauses = append(whereClauses, "`teacher_id` = ?")
+		args = append(args, teacherId)
+	}
+
+	// 拼接完整查询语句
+	if len(whereClauses) > 0 {
+		baseQuery += " where " + strings.Join(whereClauses, " and ")
+	}
+
+	// 执行查询
+	err := m.conn.QueryRowCtx(ctx, &count, baseQuery, args...)
+	return count, err
+}
+
+// FindByConditionsWithPage 实现按条件分页查询
+func (m *defaultCourseTeacherModel) FindByConditionsWithPage(
+	ctx context.Context,
+	courseId, teacherId int64,
+	pageSize, offset int,
+) ([]*CourseTeacher, error) {
+	var teachers []*CourseTeacher
+	baseQuery := fmt.Sprintf("select %s from %s", courseTeacherRows, m.table)
+
+	// 构造筛选条件（同CountByConditions）
+	var whereClauses []string
+	var args []interface{}
+
+	if courseId > 0 {
+		whereClauses = append(whereClauses, "`course_id` = ?")
+		args = append(args, courseId)
+	}
+	if teacherId > 0 {
+		whereClauses = append(whereClauses, "`teacher_id` = ?")
+		args = append(args, teacherId)
+	}
+
+	// 拼接分页和排序（按sort升序，确保展示顺序一致）
+	pageQuery := " order by `sort` asc limit ?, ?"
+	args = append(args, offset, pageSize) // 补充分页参数
+
+	// 拼接完整查询语句
+	if len(whereClauses) > 0 {
+		baseQuery += " where " + strings.Join(whereClauses, " and ") + pageQuery
+	} else {
+		baseQuery += pageQuery
+	}
+
+	// 执行查询
+	err := m.conn.QueryRowsCtx(ctx, &teachers, baseQuery, args...)
+	if err != nil {
+		return nil, err
+	}
+	return teachers, nil
+}
+
 func (m *defaultCourseTeacherModel) tableName() string {
 	return m.table
 }
diff --git a/server/router/router.go b/server/router/router.go
index 705e3f44..7eaf8944 100644
--- a/server/router/router.go
+++ b/server/router/router.go
@@ -8,6 +8,8 @@ import (
 	"github.com/JACKYMYPERSON/hldrCenter/internal/course_activity/handler/course_activity"
 	"github.com/JACKYMYPERSON/hldrCenter/internal/course_content/handler/course_content"
 	"github.com/JACKYMYPERSON/hldrCenter/internal/course_file/handler/course_file"
+	"github.com/JACKYMYPERSON/hldrCenter/internal/course_resource/handler/course_resource"
+	"github.com/JACKYMYPERSON/hldrCenter/internal/course_teacher/handler/course_teacher"
 	"github.com/JACKYMYPERSON/hldrCenter/internal/devproject/handler/devproject"
 	"github.com/JACKYMYPERSON/hldrCenter/internal/file/handler/fileupload"
 	"github.com/JACKYMYPERSON/hldrCenter/internal/meeting/handler/meeting"
@@ -263,6 +265,51 @@ func SetupRouter(cfg *config.Config) *gin.Engine {
 			// 删除课程活动（DELETE /api/course-activity/:id）
 			courseActivities.DELETE("/:id", gin.WrapH(course_activity.DeleteCourseActivityHandler(cfg)))
 		}
+		courseResources := api.Group("/course-resource")
+		{
+			// 1. 创建课程资源（POST /api/course-resource）
+			// 对应 service 中的 CreateCourseResourceHandler，接收 CreateCourseResourceReq
+			courseResources.POST("", gin.WrapH(course_resource.CreateCourseResourceHandler(cfg)))
+
+			// 2. 查询单个课程资源（GET /api/course-resource/:id）
+			// 对应 service 中的 GetCourseResourceHandler，从路径参数获取 id（GetCourseResourceReq 需包含 id 字段）
+			courseResources.GET("/:id", gin.WrapH(course_resource.GetCourseResourceHandler(cfg)))
+
+			// 3. 课程资源列表查询（POST /api/course-resource/list）
+			// 对应 service 中的 ListCourseResourceHandler，接收 ListCourseResourceReq（筛选+分页参数）
+			courseResources.POST("/list", gin.WrapH(course_resource.ListCourseResourceHandler(cfg)))
+
+			// 4. 更新课程资源（PUT /api/course-resource）
+			// 对应 service 中的 UpdateCourseResourceHandler，接收 UpdateCourseResourceReq（含 id 和更新字段）
+			courseResources.PUT("", gin.WrapH(course_resource.UpdateCourseResourceHandler(cfg)))
+
+			// 5. 删除课程资源（DELETE /api/course-resource/:id）
+			// 对应 service 中的 DeleteCourseResourceHandler，从路径参数获取 id（DeleteCourseResourceReq 需包含 id 字段）
+			courseResources.DELETE("/:id", gin.WrapH(course_resource.DeleteCourseResourceHandler(cfg)))
+		}
+
+		courseTeachers := api.Group("/course-teacher")
+		{
+			// 1. 创建教学团队关联（POST /api/course-teacher）
+			// 对应 CreateCourseTeacherHandler，接收 CreateCourseTeacherReq 请求体
+			courseTeachers.POST("", gin.WrapH(course_teacher.CreateCourseTeacherHandler(cfg)))
+
+			// 2. 查询单个教学团队关联（GET /api/course-teacher/:id）
+			// 对应 GetCourseTeacherHandler，从路径参数获取 id（需确保 GetCourseTeacherReq 含 id 字段）
+			courseTeachers.GET("/:id", gin.WrapH(course_teacher.GetCourseTeacherHandler(cfg)))
+
+			// 3. 教学团队关联列表查询（POST /api/course-teacher/list）
+			// 对应 ListCourseTeacherHandler，接收 ListCourseTeacherReq（筛选+分页参数）
+			courseTeachers.POST("/list", gin.WrapH(course_teacher.ListCourseTeacherHandler(cfg)))
+
+			// 4. 更新教学团队关联（PUT /api/course-teacher）
+			// 对应 UpdateCourseTeacherHandler，接收 UpdateCourseTeacherReq（含 id 和更新字段）
+			courseTeachers.PUT("", gin.WrapH(course_teacher.UpdateCourseTeacherHandler(cfg)))
+
+			// 5. 删除教学团队关联（DELETE /api/course-teacher/:id）
+			// 对应 DeleteCourseTeacherHandler，从路径参数获取 id（需确保 DeleteCourseTeacherReq 含 id 字段）
+			courseTeachers.DELETE("/:id", gin.WrapH(course_teacher.DeleteCourseTeacherHandler(cfg)))
+		}
 
 	}
 
diff --git a/server/util/error/error.go b/server/util/error/error.go
new file mode 100644
index 00000000..d7be2348
--- /dev/null
+++ b/server/util/error/error.go
@@ -0,0 +1,5 @@
+package error
+
+import "errors"
+
+var ErrNotFoundit = errors.New("resource not found")
diff --git a/server/util/utiltrans.go b/server/util/utiltrans.go
new file mode 100644
index 00000000..44ae4730
--- /dev/null
+++ b/server/util/utiltrans.go
@@ -0,0 +1,45 @@
+package util
+
+import "database/sql"
+
+func Int64ToInt(ni int64) int {
+	return int(ni) // 直接强转，无需处理空值（基础类型非空）
+}
+
+// NullStringToString 转换 sql.NullString 到 string
+// 若字段无效（Valid=false），返回空字符串
+func NullStringToString(ns sql.NullString) string {
+	if ns.Valid {
+		return ns.String
+	}
+	return ""
+}
+
+func StringToNullString(s string) sql.NullString {
+	if s != "" {
+		return sql.NullString{String: s, Valid: true}
+	}
+	return sql.NullString{Valid: false}
+}
+
+// NullInt64ToInt 转换 sql.NullInt64 到 int
+// 若字段无效（Valid=false），返回0（可根据业务调整默认值）
+func NullInt64ToInt(ni sql.NullInt64) int {
+	if ni.Valid {
+		return int(ni.Int64)
+	}
+	return 0
+}
+
+// NullTimeToString 转换 sql.NullTime 到格式化字符串
+// 若字段无效，返回空字符串；格式默认为 "2006-01-02 15:04:05"
+func NullTimeToString(nt sql.NullTime, format ...string) string {
+	if !nt.Valid {
+		return ""
+	}
+	f := "2006-01-02 15:04:05"
+	if len(format) > 0 {
+		f = format[0]
+	}
+	return nt.Time.Format(f)
+}