文章、课程标签的默认封面

schoolNewsWeb/src/views/public/article/card/HotArticleCard.vue

@@ -1,7 +1,7 @@
 <template>
   <div class="article-card" @click="handleClick">
     <div class="article-image">
-      <img :src="resource?.coverImage ? (FILE_DOWNLOAD_URL + resource.coverImage) : defaultArticleImg" :alt="resource.title" />
+      <img :src="coverUrl" :alt="resource?.title" />
       <div class="article-tag">精选文章</div>
     </div>
     <div class="article-content">
@@ -21,12 +21,13 @@
 </template>
 
 <script setup lang="ts">
-import { computed } from 'vue';
+import { computed, ref, watch } from 'vue';
 import { useRouter } from 'vue-router';
 import { Document } from '@element-plus/icons-vue';
 import type { ResourceRecommendVO } from '@/types';
 import { FILE_DOWNLOAD_URL } from '@/config';
 import defaultArticleImg from '@/assets/imgs/article-default.png';
+import { getRandomDefaultCover } from '@/utils/defaultCover';
 
 const props = defineProps<{
   resource?: ResourceRecommendVO;
@@ -34,6 +35,28 @@ const props = defineProps<{
 
 const router = useRouter();
 
+// 封面URL（响应式）
+const coverUrl = ref<string>(defaultArticleImg);
+
+// 加载封面
+async function loadCover() {
+  if (props.resource?.coverImage) {
+    // 有封面直接使用
+    coverUrl.value = FILE_DOWNLOAD_URL + props.resource.coverImage;
+  } else if (props.resource?.tagID) {
+    // 没有封面，根据tagID获取默认封面
+    coverUrl.value = await getRandomDefaultCover(props.resource.tagID);
+  } else {
+    // 既没有封面也没有tagID，使用全局默认
+    coverUrl.value = defaultArticleImg;
+  }
+}
+
+// 监听resource变化
+watch(() => props.resource, () => {
+  loadCover();
+}, { immediate: true });
+
 // 格式化浏览量
 function formatViewCount(count: number): string {
   if (count < 1000) {

schoolNewsWeb/src/views/public/article/card/IdeologicalArticleCard.vue

@@ -1,7 +1,7 @@
 <template>
   <div class="ideological-card" @click="handleClick">
     <div class="card-image">
-      <img :src="resource?.coverImage ? (FILE_DOWNLOAD_URL + resource.coverImage) : defaultArticleImg" :alt="resource.title" />
+      <img :src="coverUrl" :alt="resource?.title" />
     </div>
     <div class="date-box" v-if="publishDate">
       <div class="day">{{ publishDate.day }}</div>
@@ -17,11 +17,12 @@
 </template>
 
 <script setup lang="ts">
-import { computed } from 'vue';
+import { computed, ref, watch } from 'vue';
 import { useRouter } from 'vue-router';
 import type { ResourceRecommendVO } from '@/types';
 import { FILE_DOWNLOAD_URL } from '@/config';
 import defaultArticleImg from '@/assets/imgs/article-default.png';
+import { getRandomDefaultCover } from '@/utils/defaultCover';
 
 const props = defineProps<{
   resource?: ResourceRecommendVO;
@@ -29,6 +30,25 @@ const props = defineProps<{
 
 const router = useRouter();
 
+// 封面URL（响应式）
+const coverUrl = ref<string>(defaultArticleImg);
+
+// 加载封面
+async function loadCover() {
+  if (props.resource?.coverImage) {
+    coverUrl.value = FILE_DOWNLOAD_URL + props.resource.coverImage;
+  } else if (props.resource?.tagID) {
+    coverUrl.value = await getRandomDefaultCover(props.resource.tagID);
+  } else {
+    coverUrl.value = defaultArticleImg;
+  }
+}
+
+// 监听resource变化
+watch(() => props.resource, () => {
+  loadCover();
+}, { immediate: true });
+
 // 格式化发布日期
 const publishDate = computed(() => {
   if (!props.resource?.publishTime) return null;

schoolNewsWeb/src/views/public/course/components/CourseAdd.vue

@@ -50,6 +50,24 @@
           </div>
         </el-form-item>
 
+        <el-form-item label="课程分类" prop="tagID">
+          <el-select
+            v-model="currentCourseItemVO.tagID"
+            placeholder="请选择课程分类"
+            :loading="tagsLoading"
+            :disabled="!editMode"
+            clearable
+            style="width: 100%"
+          >
+            <el-option
+              v-for="tag in tagList"
+              :key="tag.tagID || tag.id"
+              :label="tag.name"
+              :value="tag.tagID || ''"
+            />
+          </el-select>
+        </el-form-item>
+
         <el-form-item label="授课老师" prop="teacher">
           <div style="display: flex; gap: 8px; align-items: flex-start;">
             <el-select
@@ -396,12 +414,13 @@ import { Plus, ArrowLeft, Refresh } from '@element-plus/icons-vue';
 import { FileUpload } from '@/components/file';
 import { RichTextComponent } from '@/components/text';
 import { courseApi } from '@/apis/study';
-import { resourceApi } from '@/apis/resource';
+import { resourceApi, resourceTagApi } from '@/apis/resource';
 import { userApi } from '@/apis/system';
 import type { CourseItemVO } from '@/types/study';
-import type { Resource } from '@/types/resource';
+import type { Resource, Tag, TagType } from '@/types/resource';
 import type { SysFile, UserVO } from '@/types';
 import { FILE_DOWNLOAD_URL } from '@/config';
+import { TagType as TagTypeEnum } from '@/types/resource';
 defineOptions({
   name: 'CourseAdd'
 });
@@ -428,6 +447,10 @@ const editMode = ref(true);
 const teacherList = ref<UserVO[]>([]);
 const teachersLoading = ref(false);
 
+// 标签列表
+const tagList = ref<Tag[]>([]);
+const tagsLoading = ref(false);
+
 // 原始数据（用于比对）
 const originalCourseItemVO = ref<CourseItemVO>();
 // 当前编辑的数据
@@ -445,12 +468,15 @@ const currentCourseItemVO = ref<CourseItemVO>({
 // 表单验证规则
 const rules = {
   'name': [{ required: true, message: '请输入课程名称', trigger: 'blur' }],
+  'tagID': [{ required: true, message: '请选择课程分类', trigger: 'change' }],
   'teacher': [{ required: true, message: '请输入授课老师', trigger: 'blur' }]
 };
 
 onMounted(() => {
   // 加载教师列表
   loadTeacherList();
+  // 加载标签列表
+  loadTagList();
   
   if (props.courseID) {
     loadCourse();
@@ -641,6 +667,25 @@ async function loadTeacherList() {
   }
 }
 
+// 加载标签列表
+async function loadTagList() {
+  try {
+    tagsLoading.value = true;
+    const result = await resourceTagApi.getTagsByType(TagTypeEnum.COURSE_CATEGORY);
+    if (result.success) {
+      tagList.value = result.dataList || [];
+      console.log(`✅ 已加载 ${tagList.value.length} 个课程分类标签`);
+    } else {
+      ElMessage.error(result.message || '加载课程分类失败');
+    }
+  } catch (error) {
+    console.error('加载课程分类失败:', error);
+    ElMessage.error('加载课程分类失败');
+  } finally {
+    tagsLoading.value = false;
+  }
+}
+
 // 处理教师选择框获得焦点
 function handleTeacherSelectFocus() {
   // 如果还没有加载教师列表，则加载