diff --git a/reading-platform-frontend/src/api/teacher.ts b/reading-platform-frontend/src/api/teacher.ts
index a05ca17..fbd3221 100644
--- a/reading-platform-frontend/src/api/teacher.ts
+++ b/reading-platform-frontend/src/api/teacher.ts
@@ -181,26 +181,52 @@ export interface StudentRecordDto {
   notes?: string;
 }
 
+// 后端状态值: scheduled, in_progress, completed, cancelled
+const STATUS_TO_BACKEND: Record<string, string> = {
+  PLANNED: 'scheduled',
+  IN_PROGRESS: 'in_progress',
+  COMPLETED: 'completed',
+  CANCELLED: 'cancelled',
+};
+
 // 获取授课记录列表
 export function getLessons(params?: {
   pageNum?: number;
+  page?: number;
   pageSize?: number;
   status?: string;
-  courseId?: number;
+  startDate?: string;
+  endDate?: string;
 }): Promise<{
   items: any[];
   total: number;
   page: number;
   pageSize: number;
 }> {
-  return http.get('/v1/teacher/lessons', {
-    params: {
-      pageNum: params?.pageNum,
-      pageSize: params?.pageSize,
-      status: params?.status,
-      startDate: params?.courseId, // 如果需要可以传其他参数
-    },
-  }) as any;
+  const pageNum = params?.pageNum ?? params?.page ?? 1;
+  const status = params?.status ? (STATUS_TO_BACKEND[params.status] || params.status) : undefined;
+  return http
+    .get<{ list?: any[]; records?: any[]; total?: number | string; pageNum?: number; pageSize?: number }>(
+      '/v1/teacher/lessons',
+      {
+        params: {
+          pageNum,
+          pageSize: params?.pageSize ?? 10,
+          status,
+          startDate: params?.startDate,
+          endDate: params?.endDate,
+        },
+      }
+    )
+    .then((res) => {
+      const list = res?.list ?? res?.records ?? [];
+      return {
+        items: Array.isArray(list) ? list : [],
+        total: typeof res?.total === 'string' ? parseInt(res.total, 10) || 0 : (res?.total ?? 0),
+        page: res?.pageNum ?? pageNum,
+        pageSize: res?.pageSize ?? 10,
+      };
+    });
 }
 
 // 获取单个授课记录详情（id 使用 string 避免 Long 精度丢失）
diff --git a/reading-platform-frontend/src/views/teacher/courses/CourseDetailView.vue b/reading-platform-frontend/src/views/teacher/courses/CourseDetailView.vue
index deb220a..85632cb 100644
--- a/reading-platform-frontend/src/views/teacher/courses/CourseDetailView.vue
+++ b/reading-platform-frontend/src/views/teacher/courses/CourseDetailView.vue
@@ -17,7 +17,7 @@
         <a-button @click="createSchoolVersion">
           <CopyOutlined /> 创建校本版本
         </a-button>
-        <a-button type="primary" @click="startPrepare">
+        <a-button type="primary" @click="startPrepare" :disabled="!course.id || loading">
           <EditOutlined /> 开始备课
         </a-button>
       </div>
@@ -281,7 +281,7 @@
                     <div class="lesson-section-title">教学环节 ({{ lesson.steps.length }}个)</div>
                     <div class="steps-timeline">
                       <div v-for="(step, index) in lesson.steps" :key="step.id || index" class="step-item">
-                        <div class="step-dot">{{ index + 1 }}</div>
+                        <div class="step-dot">{{ Number(index) + 1 }}</div>
                         <div class="step-content">
                           <div class="step-name">{{ step.name }}</div>
                           <div class="step-duration">{{ step.duration }}分钟</div>
@@ -870,7 +870,12 @@ const createSchoolVersion = () => {
 };
 
 const startPrepare = () => {
-  router.push(`/teacher/courses/${course.value.id}/prepare`);
+  const id = route.params.id || course.value?.id;
+  if (!id || id === 'undefined') {
+    message.warning('课程信息未加载完成，请稍后再试');
+    return;
+  }
+  router.push(`/teacher/courses/${id}/prepare`);
 };
 
 const toggleFavorite = () => {
diff --git a/reading-platform-frontend/src/views/teacher/courses/CourseListView.vue b/reading-platform-frontend/src/views/teacher/courses/CourseListView.vue
index ea6c1fb..f8f0bbe 100644
--- a/reading-platform-frontend/src/views/teacher/courses/CourseListView.vue
+++ b/reading-platform-frontend/src/views/teacher/courses/CourseListView.vue
@@ -318,7 +318,12 @@ const viewCourseDetail = (course: any) => {
 };
 
 const prepareCourse = (course: any) => {
-  router.push(`/teacher/courses/${course.id}/prepare`);
+  const id = course?.id;
+  if (id == null || id === 'undefined') {
+    message.warning('课程信息异常，无法进入备课');
+    return;
+  }
+  router.push(`/teacher/courses/${id}/prepare`);
 };
 
 onMounted(() => {
diff --git a/reading-platform-frontend/src/views/teacher/courses/PrepareModeView.vue b/reading-platform-frontend/src/views/teacher/courses/PrepareModeView.vue
index 6df2ad4..987a006 100644
--- a/reading-platform-frontend/src/views/teacher/courses/PrepareModeView.vue
+++ b/reading-platform-frontend/src/views/teacher/courses/PrepareModeView.vue
@@ -121,7 +121,7 @@
 </template>
 
 <script setup lang="ts">
-import { ref, computed, onMounted } from 'vue';
+import { ref, computed, onMounted, watch } from 'vue';
 import { useRouter, useRoute } from 'vue-router';
 import {
   LeftOutlined, BookOutlined, ClockCircleOutlined, TagOutlined,
@@ -210,8 +210,14 @@ const getFileUrl = (filePath: string | null | undefined): string => {
 };
 
 const loadCourseData = async () => {
-  courseId.value = (route.params.id as string) || '';
-  if (!courseId.value) return;
+  const id = route.params.id as string;
+  // 校验 ID：无效时跳转回课程列表，避免请求 /courses/undefined
+  if (!id || id === 'undefined' || id === 'null') {
+    message.warning('课程 ID 无效，已返回课程列表');
+    router.replace('/teacher/courses');
+    return;
+  }
+  courseId.value = id;
 
   loading.value = true;
   try {
@@ -358,7 +364,7 @@ const handleSelectStep = (step: any) => {
   selectedStep.value = step;
 };
 
-const handlePreviewResource = (type: string, resource: any) => {
+const handlePreviewResource = (_type: string, resource: any) => {
   previewFileUrl.value = resource.url;
   previewFileName.value = resource.name || '资源文件';
   previewModalVisible.value = true;
@@ -452,12 +458,28 @@ const handleExit = () => {
 };
 
 const goBackToDetail = () => {
-  router.push(`/teacher/courses/${courseId.value}`);
+  // 优先使用路由中的 ID，避免返回时 courseId 未加载导致跳转到 /courses/undefined
+  const id = route.params.id || courseId.value;
+  if (id && id !== 'undefined' && id !== 'null') {
+    router.push(`/teacher/courses/${id}`);
+  } else {
+    router.push('/teacher/courses');
+  }
 };
 
 onMounted(() => {
   loadCourseData();
 });
+
+// 路由变化时重新加载（如从课程 A 的备课页切换到课程 B 的备课页，组件复用时）
+watch(
+  () => route.params.id,
+  (newId, oldId) => {
+    if (newId && newId !== oldId) {
+      loadCourseData();
+    }
+  }
+);
 </script>
 
 <style scoped>
diff --git a/reading-platform-frontend/src/views/teacher/lessons/LessonListView.vue b/reading-platform-frontend/src/views/teacher/lessons/LessonListView.vue
index 9527503..353e9c4 100644
--- a/reading-platform-frontend/src/views/teacher/lessons/LessonListView.vue
+++ b/reading-platform-frontend/src/views/teacher/lessons/LessonListView.vue
@@ -46,16 +46,16 @@
           </div>
           <div class="card-content">
             <div class="card-header">
-              <h3 class="course-name">{{ lesson.course?.name || '未知课程' }}</h3>
+              <h3 class="course-name">{{ lesson.courseName || lesson.course?.name || lesson.title || '未知课程' }}</h3>
               <span class="lesson-time">
                 <ClockCircleOutlined />
-                {{ formatDateTime(lesson.startDatetime || lesson.plannedDatetime) }}
+                {{ formatDateTime(lesson.startDatetime || lesson.plannedDatetime || (lesson.lessonDate && lesson.startTime ? `${lesson.lessonDate}T${lesson.startTime}` : null)) }}
               </span>
             </div>
             <div class="card-body">
               <div class="info-item">
                 <TeamOutlined />
-                <span>{{ lesson.class?.name || '未知班级' }}</span>
+                <span>{{ lesson.className || lesson.class?.name || '未知班级' }}</span>
               </div>
               <div class="info-item" v-if="lesson.actualDuration">
                 <FieldTimeOutlined />
@@ -108,10 +108,10 @@
       <div class="detail-content" v-if="selectedLesson">
         <a-descriptions :column="1" bordered>
           <a-descriptions-item label="课程名称">
-            {{ selectedLesson.course?.name }}
+            {{ selectedLesson.courseName || selectedLesson.course?.name || selectedLesson.title || '-' }}
           </a-descriptions-item>
           <a-descriptions-item label="授课班级">
-            {{ selectedLesson.class?.name }}
+            {{ selectedLesson.className || selectedLesson.class?.name || '-' }}
           </a-descriptions-item>
           <a-descriptions-item label="课程状态">
             <a-tag :color="getStatusColor(selectedLesson.status)">
@@ -152,7 +152,7 @@
         <!-- 操作按钮 -->
         <div class="action-section">
           <!-- 已计划状态 -->
-          <template v-if="selectedLesson.status === 'PLANNED'">
+          <template v-if="selectedLesson.status === 'PLANNED' || selectedLesson.status === 'scheduled'">
             <a-button type="primary" block @click="startPlannedLesson" style="margin-bottom: 12px;">
               开始上课
             </a-button>
@@ -226,12 +226,16 @@ const filters = reactive({
 const detailDrawerVisible = ref(false);
 const selectedLesson = ref<any>(null);
 
-// 状态映射
+// 状态映射（兼容后端 scheduled/in_progress/completed/cancelled 与前端 PLANNED/IN_PROGRESS 等）
 const statusMap: Record<string, { text: string; color: string; class: string }> = {
   PLANNED: { text: '已计划', color: 'blue', class: 'status-planned' },
+  scheduled: { text: '已计划', color: 'blue', class: 'status-planned' },
   IN_PROGRESS: { text: '进行中', color: 'orange', class: 'status-progress' },
+  in_progress: { text: '进行中', color: 'orange', class: 'status-progress' },
   COMPLETED: { text: '已完成', color: 'green', class: 'status-completed' },
+  completed: { text: '已完成', color: 'green', class: 'status-completed' },
   CANCELLED: { text: '已取消', color: 'default', class: 'status-cancelled' },
+  cancelled: { text: '已取消', color: 'default', class: 'status-cancelled' },
 };
 
 const getStatusText = (status: string) => statusMap[status]?.text || status;
@@ -247,12 +251,16 @@ const loadLessons = async () => {
   loading.value = true;
   try {
     const params: any = {
-      page: currentPage.value,
+      pageNum: currentPage.value,
       pageSize: pageSize.value,
     };
     if (filters.status) {
       params.status = filters.status;
     }
+    if (filters.dateRange && filters.dateRange[0] && filters.dateRange[1]) {
+      params.startDate = filters.dateRange[0].format('YYYY-MM-DD');
+      params.endDate = filters.dateRange[1].format('YYYY-MM-DD');
+    }
 
     const data = await teacherApi.getLessons(params);
     lessons.value = data.items || [];
@@ -288,8 +296,9 @@ const viewDetail = (lesson: any) => {
 };
 
 const goToPrepare = () => {
-  if (selectedLesson.value?.course?.id) {
-    router.push(`/teacher/courses/${selectedLesson.value.course.id}/prepare`);
+  const courseId = selectedLesson.value?.courseId ?? selectedLesson.value?.course?.id;
+  if (courseId) {
+    router.push(`/teacher/courses/${courseId}/prepare`);
     detailDrawerVisible.value = false;
   }
 };
@@ -309,8 +318,9 @@ const goToRecords = () => {
 };
 
 const goToCourseDetail = () => {
-  if (selectedLesson.value?.course?.id) {
-    router.push(`/teacher/courses/${selectedLesson.value.course.id}`);
+  const courseId = selectedLesson.value?.courseId ?? selectedLesson.value?.course?.id;
+  if (courseId) {
+    router.push(`/teacher/courses/${courseId}`);
     detailDrawerVisible.value = false;
   }
 };
diff --git a/reading-platform-java/src/main/java/com/reading/platform/controller/teacher/TeacherLessonController.java b/reading-platform-java/src/main/java/com/reading/platform/controller/teacher/TeacherLessonController.java
index a413e1c..7300b49 100644
--- a/reading-platform-java/src/main/java/com/reading/platform/controller/teacher/TeacherLessonController.java
+++ b/reading-platform-java/src/main/java/com/reading/platform/controller/teacher/TeacherLessonController.java
@@ -12,9 +12,13 @@ import com.reading.platform.dto.request.LessonUpdateRequest;
 import com.reading.platform.dto.request.StudentRecordRequest;
 import com.reading.platform.dto.response.LessonResponse;
 import com.reading.platform.dto.response.StudentRecordResponse;
+import com.reading.platform.entity.Clazz;
+import com.reading.platform.entity.Course;
 import com.reading.platform.entity.Lesson;
 import com.reading.platform.entity.LessonFeedback;
 import com.reading.platform.entity.StudentRecord;
+import com.reading.platform.mapper.ClazzMapper;
+import com.reading.platform.mapper.CourseMapper;
 import com.reading.platform.service.LessonService;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
@@ -35,13 +39,17 @@ public class TeacherLessonController {
     private final LessonService lessonService;
     private final LessonMapper lessonMapper;
     private final StudentRecordMapper studentRecordMapper;
+    private final CourseMapper courseMapper;
+    private final ClazzMapper clazzMapper;
 
     @Operation(summary = "Create lesson")
     @PostMapping
     public Result<LessonResponse> createLesson(@Valid @RequestBody LessonCreateRequest request) {
         Long tenantId = SecurityUtils.getCurrentTenantId();
         Lesson lesson = lessonService.createLesson(tenantId, request);
-        return Result.success(lessonMapper.toVO(lesson));
+        LessonResponse vo = lessonMapper.toVO(lesson);
+        enrichWithCourseAndClass(vo);
+        return Result.success(vo);
     }
 
     @Operation(summary = "Update lesson")
@@ -55,7 +63,9 @@ public class TeacherLessonController {
     @GetMapping("/{id}")
     public Result<LessonResponse> getLesson(@PathVariable Long id) {
         Lesson lesson = lessonService.getLessonById(id);
-        return Result.success(lessonMapper.toVO(lesson));
+        LessonResponse vo = lessonMapper.toVO(lesson);
+        enrichWithCourseAndClass(vo);
+        return Result.success(vo);
     }
 
     @Operation(summary = "Get my lessons")
@@ -69,6 +79,7 @@ public class TeacherLessonController {
         Long teacherId = SecurityUtils.getCurrentUserId();
         Page<Lesson> page = lessonService.getTeacherLessons(teacherId, pageNum, pageSize, status, startDate, endDate);
         List<LessonResponse> voList = lessonMapper.toVO(page.getRecords());
+        voList.forEach(this::enrichWithCourseAndClass);
         return Result.success(PageResult.of(voList, page.getTotal(), page.getCurrent(), page.getSize()));
     }
 
@@ -98,7 +109,9 @@ public class TeacherLessonController {
     public Result<List<LessonResponse>> getTodayLessons() {
         Long tenantId = SecurityUtils.getCurrentTenantId();
         List<Lesson> lessons = lessonService.getTodayLessons(tenantId);
-        return Result.success(lessonMapper.toVO(lessons));
+        List<LessonResponse> voList = lessonMapper.toVO(lessons);
+        voList.forEach(this::enrichWithCourseAndClass);
+        return Result.success(voList);
     }
 
     @Operation(summary = "Get student records")
@@ -159,7 +172,24 @@ public class TeacherLessonController {
     @GetMapping("/{id}/progress")
     public Result<LessonResponse> getLessonProgress(@PathVariable Long id) {
         Lesson lesson = lessonService.getLessonProgress(id);
-        return Result.success(lessonMapper.toVO(lesson));
+        LessonResponse vo = lessonMapper.toVO(lesson);
+        enrichWithCourseAndClass(vo);
+        return Result.success(vo);
+    }
+
+    /**
+     * 为 LessonResponse 补充课程名称和班级名称
+     */
+    private void enrichWithCourseAndClass(LessonResponse vo) {
+        if (vo == null) return;
+        if (vo.getCourseId() != null) {
+            Course course = courseMapper.selectById(vo.getCourseId());
+            vo.setCourseName(course != null ? course.getName() : null);
+        }
+        if (vo.getClassId() != null) {
+            Clazz clazz = clazzMapper.selectById(vo.getClassId());
+            vo.setClassName(clazz != null ? clazz.getName() : null);
+        }
     }
 
 }
diff --git a/reading-platform-java/src/main/java/com/reading/platform/dto/response/LessonResponse.java b/reading-platform-java/src/main/java/com/reading/platform/dto/response/LessonResponse.java
index 696b02b..4ab71ee 100644
--- a/reading-platform-java/src/main/java/com/reading/platform/dto/response/LessonResponse.java
+++ b/reading-platform-java/src/main/java/com/reading/platform/dto/response/LessonResponse.java
@@ -29,6 +29,12 @@ public class LessonResponse {
     @Schema(description = "班级 ID")
     private Long classId;
 
+    @Schema(description = "课程名称（用于列表展示）")
+    private String courseName;
+
+    @Schema(description = "班级名称（用于列表展示）")
+    private String className;
+
     @Schema(description = "教师 ID")
     private Long teacherId;
 
diff --git a/reading-platform-java/src/main/java/com/reading/platform/service/CourseLessonService.java b/reading-platform-java/src/main/java/com/reading/platform/service/CourseLessonService.java
index 0f268ea..2d8858d 100644
--- a/reading-platform-java/src/main/java/com/reading/platform/service/CourseLessonService.java
+++ b/reading-platform-java/src/main/java/com/reading/platform/service/CourseLessonService.java
@@ -1,5 +1,6 @@
 package com.reading.platform.service;
 
+import com.alibaba.fastjson2.JSON;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import com.reading.platform.common.exception.BusinessException;
@@ -112,8 +113,8 @@ public class CourseLessonService extends ServiceImpl<CourseLessonMapper, CourseL
         lesson.setPreparation(preparation);
         lesson.setExtension(extension);
         lesson.setReflection(reflection);
-        // 处理空字符串为 null，避免 MySQL JSON 字段错误
-        lesson.setAssessmentData(assessmentData == null || assessmentData.isEmpty() ? null : assessmentData);
+        // 确保 assessment_data 为有效 JSON，MySQL JSON 列不接受纯文本
+        lesson.setAssessmentData(toValidJsonOrNull(assessmentData));
         lesson.setUseTemplate(useTemplate);
         lesson.setSortOrder(maxSortOrder + 1);
         lesson.setCreatedAt(LocalDateTime.now());
@@ -178,7 +179,7 @@ public class CourseLessonService extends ServiceImpl<CourseLessonMapper, CourseL
             lesson.setReflection(reflection);
         }
         if (assessmentData != null) {
-            lesson.setAssessmentData(assessmentData);
+            lesson.setAssessmentData(toValidJsonOrNull(assessmentData));
         }
         if (useTemplate != null) {
             lesson.setUseTemplate(useTemplate);
@@ -355,6 +356,31 @@ public class CourseLessonService extends ServiceImpl<CourseLessonMapper, CourseL
         log.info("教学环节重新排序成功，lessonId={}", lessonId);
     }
 
+    /**
+     * 将 assessmentData 转为 MySQL JSON 列可接受的有效 JSON。
+     * 空值返回 null；已是有效 JSON 则原样返回；否则包装为 JSON 字符串。
+     */
+    private String toValidJsonOrNull(String assessmentData) {
+        if (assessmentData == null || assessmentData.isEmpty()) {
+            return null;
+        }
+        String trimmed = assessmentData.trim();
+        if (trimmed.isEmpty()) {
+            return null;
+        }
+        // 已是有效 JSON（对象或数组）则直接使用
+        if ((trimmed.startsWith("{") && trimmed.endsWith("}")) || (trimmed.startsWith("[") && trimmed.endsWith("]"))) {
+            try {
+                JSON.parse(trimmed);
+                return trimmed;
+            } catch (Exception ignored) {
+                // 解析失败，当作普通文本处理
+            }
+        }
+        // 普通文本包装为 JSON 字符串
+        return JSON.toJSONString(assessmentData);
+    }
+
     /**
      * 查询教师的课程环节（带权限检查）
      */