修改样式

backend/prisma/schema.prisma

@@ -782,7 +782,8 @@ model ContestWork {
   submitterUserId    Int?     @map("submitter_user_id") /// 提交人用户id
   submitterAccountNo String?  @map("submitter_account_no") /// 提交人账号
   submitSource       String   @default("teacher") @map("submit_source") /// 提交来源：teacher/student/team_leader
-  previewUrl         String?  @map("preview_url") @db.Text /// 作品预览URL
+  previewUrl         String?  @map("preview_url") @db.Text /// 作品预览URL（兼容单预览图）
+  previewUrls        Json?    @map("preview_urls") /// 作品预览图URL列表（多模型场景）
   aiModelMeta        Json?    @map("ai_model_meta") /// AI建模元数据
   // 赛果相关字段
   finalScore         Decimal? @map("final_score") @db.Decimal(10, 2) /// 最终得分（根据规则计算）

backend/src/contests/works/dto/submit-work.dto.ts

@@ -20,6 +20,11 @@ export class SubmitWorkDto {
   @IsOptional()
   previewUrl?: string;
 
+  @IsArray()
+  @IsString({ each: true })
+  @IsOptional()
+  previewUrls?: string[];
+
   @IsObject()
   @IsOptional()
   aiModelMeta?: any;

backend/src/contests/works/works.service.ts

@@ -115,6 +115,7 @@ export class WorksService {
       submitterAccountNo: submitter?.username,
       submitSource: 'student', // 可以根据实际情况判断
       previewUrl: submitWorkDto.previewUrl,
+      previewUrls: submitWorkDto.previewUrls || null,
       aiModelMeta: submitWorkDto.aiModelMeta || null,
       creator: submitterUserId,
     };

backend/src/upload/upload.controller.ts

@@ -13,6 +13,7 @@ import {
 } from '@nestjs/common';
 import { FileInterceptor } from '@nestjs/platform-express';
 import { Response } from 'express';
+import { memoryStorage } from 'multer';
 import { UploadService } from './upload.service';
 import { JwtAuthGuard } from '../auth/guards/jwt-auth.guard';
 import * as path from 'path';
@@ -24,7 +25,14 @@ export class UploadController {
 
   @Post()
   @UseGuards(JwtAuthGuard)
-  @UseInterceptors(FileInterceptor('file'))
+  @UseInterceptors(
+    FileInterceptor('file', {
+      storage: memoryStorage(), // 使用内存存储，确保 file.buffer 可用
+      limits: {
+        fileSize: 100 * 1024 * 1024, // 限制文件大小为 100MB
+      },
+    }),
+  )
   async uploadFile(
     @UploadedFile() file: Express.Multer.File,
     @Request() req,

frontend/src/api/contests.ts

@@ -320,6 +320,7 @@ export interface ContestWork {
   submitterAccountNo?: string;
   submitSource: string;
   previewUrl?: string;
+  previewUrls?: string[];
   aiModelMeta?: any;
   creator?: number;
   modifier?: number;
@@ -371,6 +372,7 @@ export interface SubmitWorkForm {
   description?: string;
   files?: string[];
   previewUrl?: string;
+  previewUrls?: string[];
   aiModelMeta?: any;
 }
 

frontend/src/utils/menu.ts

@@ -99,13 +99,45 @@ function getRouteNameFromPath(
 /**
  * 将数据库菜单转换为 Ant Design Vue Menu 的 items 格式
  * key 使用路由名称而不是路径
+ * 当父菜单只有一个子菜单时，直接显示子菜单，不显示父级折叠结构
  */
 export function convertMenusToMenuItems(
   menus: Menu[],
   isChild: boolean = false
 ): MenuProps["items"] {
-  return menus.map((menu) => {
+  const result: any[] = []
-    // 使用路由名称作为 key
+
+  menus.forEach((menu) => {
+    // 如果只有一个子菜单，直接提升子菜单到当前层级
+    if (menu.children && menu.children.length === 1) {
+      const onlyChild = menu.children[0]
+      const childRouteName = getRouteNameFromPath(onlyChild.path, onlyChild.id, true)
+
+      const item: any = {
+        key: childRouteName,
+        label: onlyChild.name,
+        title: onlyChild.name,
+      }
+
+      // 优先使用父菜单的图标，如果没有则使用子菜单的图标
+      const iconName = menu.icon || onlyChild.icon
+      if (iconName) {
+        const IconComponent = getIconComponent(iconName)
+        if (IconComponent) {
+          item.icon = IconComponent
+        }
+      }
+
+      // 如果这个唯一的子菜单还有子菜单，继续递归处理
+      if (onlyChild.children && onlyChild.children.length > 0) {
+        item.children = convertMenusToMenuItems(onlyChild.children, true)
+      }
+
+      result.push(item)
+      return
+    }
+
+    // 正常处理：使用路由名称作为 key
     const routeName = getRouteNameFromPath(menu.path, menu.id, isChild)
 
     const item: any = {
@@ -122,13 +154,15 @@ export function convertMenusToMenuItems(
       }
     }
 
-    // 如果有子菜单，递归处理
+    // 如果有多个子菜单，递归处理
-    if (menu.children && menu.children.length > 0) {
+    if (menu.children && menu.children.length > 1) {
       item.children = convertMenusToMenuItems(menu.children, true)
     }
 
-    return item
+    result.push(item)
   })
+
+  return result
 }
 
 /**

frontend/src/views/contests/Activities.vue

@@ -1,22 +1,45 @@
 <template>
   <div class="contests-activities-page">
-    <a-card class="mb-4">
+    <!-- 顶部导航栏 -->
-      <template #title>
+    <div class="page-header">
-        <a-tabs v-model:activeKey="activeTab" @change="handleTabChange">
+      <div class="header-left">
-          <a-tab-pane key="my" :tab="myTabTitle" />
+        <!-- 自定义 Tab 切换 -->
-          <a-tab-pane key="all" tab="全部赛事" />
+        <div class="custom-tabs">
-        </a-tabs>
+          <div
-      </template>
+            class="tab-item"
-      <template #extra>
+            :class="{ active: activeTab === 'my' }"
-        <a-input-search
+            @click="switchTab('my')"
-          v-model:value="searchKeyword"
+          >
-          placeholder="搜索赛事"
+            <TrophyOutlined />
-          style="width: 300px"
+            <span>{{ myTabTitle }}</span>
-          @search="handleSearch"
+          </div>
-          @press-enter="handleSearch"
+          <div
+            class="tab-item"
+            :class="{ active: activeTab === 'all' }"
+            @click="switchTab('all')"
+          >
+            <AppstoreOutlined />
+            <span>全部赛事</span>
+          </div>
+        </div>
+      </div>
+      <div class="header-right">
+        <!-- 自定义搜索框 -->
+        <div class="custom-search">
+          <SearchOutlined class="search-icon" />
+          <input
+            v-model="searchKeyword"
+            type="text"
+            placeholder="搜索赛事名称..."
+            class="search-input"
+            @keyup.enter="handleSearch"
           />
-      </template>
+          <div v-if="searchKeyword" class="search-clear" @click="clearSearch">
-    </a-card>
+            <CloseCircleFilled />
+          </div>
+        </div>
+      </div>
+    </div>
 
     <!-- 赛事列表 -->
     <div v-if="loading" class="loading-container">
@@ -34,35 +57,59 @@
         class="contest-card"
         @click="handleViewDetail(contest.id)"
       >
-        <!-- 卡片图标 -->
+        <!-- 海报区域 -->
-        <div class="card-icon">
+        <div class="card-poster">
-          <TrophyOutlined />
+          <img
+            v-if="contest.posterUrl || contest.coverUrl"
+            :src="contest.posterUrl || contest.coverUrl"
+            alt="赛事海报"
+            class="poster-image"
+            @error="(e) => handleImageError(e, contest.id)"
+          />
+          <div
+            v-else
+            class="poster-placeholder"
+            :style="{ background: getGradientByIndex(contest.id) }"
+          >
+            <TrophyOutlined class="placeholder-icon" />
+          </div>
+          <!-- 状态角标 -->
+          <div
+            v-if="getStageText(contest)"
+            class="stage-badge"
+            :class="getStageClass(contest)"
+          >
+            {{ getStageText(contest) }}
+          </div>
+          <!-- 赛事类型角标 -->
+          <div class="type-badge">
+            {{ contest.contestType === "individual" ? "个人赛" : "团队赛" }}
+          </div>
         </div>
 
+        <!-- 内容区域 -->
+        <div class="card-content">
           <!-- 卡片标题 -->
           <div class="card-title">{{ contest.contestName }}</div>
 
-        <!-- 卡片描述 -->
+          <!-- 时间信息 -->
-        <div class="card-desc">
+          <div class="card-meta">
-          赛事时间：{{ formatDate(contest.startTime) }} ~
+            <div class="meta-item">
-          {{ formatDate(contest.endTime) }}
+              <CalendarOutlined />
+              <span
+                >{{ formatDate(contest.startTime) }} ~
+                {{ formatDate(contest.endTime) }}</span
+              >
+            </div>
           </div>
 
-        <!-- 卡片标签 -->
+          <!-- 底部区域 -->
-        <div class="card-tags">
+          <div class="card-footer">
-          <span class="tag tag-type">
-            {{ contest.contestType === "individual" ? "个人赛" : "团队赛" }}
-          </span>
             <span
-            class="tag tag-status"
+              class="status-dot"
-            :class="{ 'tag-ongoing': contest.status === 'ongoing' }"
+              :class="{ 'status-ongoing': contest.status === 'ongoing' }"
-          >
+            ></span>
-            {{ getStatusText(contest) }}
+            <span class="status-text">{{ getStatusText(contest) }}</span>
-          </span>
-          <span v-if="getStageText(contest)" class="tag tag-stage">
-            {{ getStageText(contest) }}
-          </span>
-        </div>
 
             <!-- 操作按钮区域 - 我的赛事tab显示 -->
             <div v-if="activeTab === 'my'" class="card-actions" @click.stop>
@@ -122,6 +169,8 @@
               </template>
             </div>
           </div>
+        </div>
+      </div>
 
       <!-- 分页 -->
       <div class="pagination-container">
@@ -157,7 +206,13 @@
 import { ref, reactive, computed, onMounted } from "vue"
 import { useRouter, useRoute } from "vue-router"
 import { message } from "ant-design-vue"
-import { TrophyOutlined } from "@ant-design/icons-vue"
+import {
+  TrophyOutlined,
+  CalendarOutlined,
+  AppstoreOutlined,
+  SearchOutlined,
+  CloseCircleFilled,
+} from "@ant-design/icons-vue"
 import dayjs from "dayjs"
 import {
   contestsApi,
@@ -257,6 +312,20 @@ const handleTabChange = () => {
   fetchList()
 }
 
+// 切换Tab
+const switchTab = (tab: "all" | "my") => {
+  if (activeTab.value !== tab) {
+    activeTab.value = tab
+    handleTabChange()
+  }
+}
+
+// 清空搜索
+const clearSearch = () => {
+  searchKeyword.value = ""
+  handleSearch()
+}
+
 // 搜索处理
 const handleSearch = () => {
   searchParams.contestName = searchKeyword.value || undefined
@@ -330,8 +399,36 @@ const handlePresetComments = (id: number) => {
 // 图片加载错误记录
 const imageErrors = ref<Record<number, boolean>>({})
 
-const handleImageError = (_event: Event, contestId: number) => {
+const handleImageError = (event: Event, contestId: number) => {
   imageErrors.value[contestId] = true
+  // 隐藏加载失败的图片
+  const img = event.target as HTMLImageElement
+  img.style.display = "none"
+}
+
+// 根据ID生成渐变背景色
+const gradients = [
+  "linear-gradient(135deg, #667eea 0%, #764ba2 100%)",
+  "linear-gradient(135deg, #f093fb 0%, #f5576c 100%)",
+  "linear-gradient(135deg, #4facfe 0%, #00f2fe 100%)",
+  "linear-gradient(135deg, #43e97b 0%, #38f9d7 100%)",
+  "linear-gradient(135deg, #fa709a 0%, #fee140 100%)",
+  "linear-gradient(135deg, #a18cd1 0%, #fbc2eb 100%)",
+  "linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%)",
+  "linear-gradient(135deg, #96fbc4 0%, #f9f586 100%)",
+]
+
+const getGradientByIndex = (id: number): string => {
+  return gradients[id % gradients.length]
+}
+
+// 获取阶段样式类
+const getStageClass = (contest: Contest): string => {
+  if (isRegistering(contest)) return "stage-registering"
+  if (isSubmitting(contest)) return "stage-submitting"
+  if (isReviewing(contest)) return "stage-reviewing"
+  if (contest.status === "finished") return "stage-finished"
+  return ""
 }
 
 // 格式化日期
@@ -404,6 +501,10 @@ const getStageText = (contest: Contest): string => {
   if (isReviewing(contest)) {
     return "评审中"
   }
+  // 如果赛事已结束
+  if (contest.status === "finished") {
+    return "已结束"
+  }
   return ""
 }
 
@@ -429,6 +530,128 @@ $primary-light: #1677ff;
 .contests-activities-page {
   padding: 24px;
 
+  // 顶部导航栏
+  .page-header {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    margin-bottom: 24px;
+    padding: 16px 20px;
+    background: #fff;
+    border-radius: 16px;
+    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
+
+    .header-left {
+      flex: 1;
+    }
+
+    .header-right {
+      flex-shrink: 0;
+    }
+  }
+
+  // 自定义 Tab 切换
+  .custom-tabs {
+    display: inline-flex;
+    background: #f5f7fa;
+    border-radius: 12px;
+    padding: 4px;
+    gap: 4px;
+
+    .tab-item {
+      display: flex;
+      align-items: center;
+      gap: 8px;
+      padding: 10px 20px;
+      border-radius: 10px;
+      font-size: 14px;
+      font-weight: 500;
+      color: rgba(0, 0, 0, 0.65);
+      cursor: pointer;
+      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
+      user-select: none;
+
+      .anticon {
+        font-size: 16px;
+      }
+
+      &:hover {
+        color: $primary;
+        background: rgba($primary, 0.08);
+      }
+
+      &.active {
+        color: #fff;
+        background: linear-gradient(135deg, $primary-light 0%, $primary 100%);
+        box-shadow: 0 4px 12px rgba($primary, 0.35);
+
+        .anticon {
+          color: #fff;
+        }
+      }
+    }
+  }
+
+  // 自定义搜索框
+  .custom-search {
+    position: relative;
+    display: flex;
+    align-items: center;
+    width: 280px;
+    height: 44px;
+    background: #f5f7fa;
+    border-radius: 12px;
+    padding: 0 16px;
+    transition: all 0.3s ease;
+    border: 2px solid transparent;
+
+    &:focus-within {
+      background: #fff;
+      border-color: $primary-light;
+      box-shadow: 0 0 0 4px rgba($primary, 0.1);
+    }
+
+    .search-icon {
+      font-size: 18px;
+      color: rgba(0, 0, 0, 0.35);
+      margin-right: 12px;
+      transition: color 0.3s ease;
+    }
+
+    &:focus-within .search-icon {
+      color: $primary;
+    }
+
+    .search-input {
+      flex: 1;
+      border: none;
+      outline: none;
+      background: transparent;
+      font-size: 14px;
+      color: rgba(0, 0, 0, 0.85);
+
+      &::placeholder {
+        color: rgba(0, 0, 0, 0.35);
+      }
+    }
+
+    .search-clear {
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      width: 20px;
+      height: 20px;
+      margin-left: 8px;
+      color: rgba(0, 0, 0, 0.25);
+      cursor: pointer;
+      transition: color 0.2s ease;
+
+      &:hover {
+        color: rgba(0, 0, 0, 0.45);
+      }
+    }
+  }
+
   .loading-container,
   .empty-container {
     display: flex;
@@ -439,112 +662,262 @@ $primary-light: #1677ff;
 
   .contests-grid {
     display: grid;
-    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
+    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
-    gap: 20px;
+    gap: 24px;
 
     .contest-card {
       background: #fff;
       border-radius: 16px;
-      padding: 24px;
       cursor: pointer;
-      transition: all 0.3s ease;
+      transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
-      border: 1px solid #f0f0f0;
+      overflow: hidden;
-      display: flex;
+      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
-      flex-direction: column;
-      gap: 16px;
 
       &:hover {
-        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
+        box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
-        transform: translateY(-2px);
+        transform: translateY(-6px);
+
+        .card-poster {
+          .poster-image,
+          .poster-placeholder {
+            transform: scale(1.05);
+          }
+        }
       }
 
-      .card-icon {
+      // 海报区域
-        width: 48px;
+      .card-poster {
-        height: 48px;
+        position: relative;
-        background: rgba($primary, 0.08);
+        width: 100%;
-        border-radius: 12px;
+        height: 180px;
+        overflow: hidden;
+
+        .poster-image {
+          width: 100%;
+          height: 100%;
+          object-fit: cover;
+          transition: transform 0.4s ease;
+        }
+
+        .poster-placeholder {
+          width: 100%;
+          height: 100%;
           display: flex;
           align-items: center;
           justify-content: center;
-        font-size: 22px;
+          transition: transform 0.4s ease;
-        color: $primary;
+
-        transition: all 0.3s ease;
+          .placeholder-icon {
+            font-size: 48px;
+            color: rgba(255, 255, 255, 0.8);
+            filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
           }
+        }
+
+        // 阶段角标
+        .stage-badge {
+          position: absolute;
+          top: 12px;
+          left: 12px;
+          padding: 4px 12px;
+          border-radius: 20px;
+          font-size: 12px;
+          font-weight: 600;
+          color: #fff;
+          backdrop-filter: blur(8px);
+          box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
+
+          &.stage-registering {
+            background: linear-gradient(135deg, #52c41a 0%, #73d13d 100%);
+          }
+
+          &.stage-submitting {
+            background: linear-gradient(135deg, #1890ff 0%, #40a9ff 100%);
+          }
+
+          &.stage-reviewing {
+            background: linear-gradient(135deg, #faad14 0%, #ffc53d 100%);
+          }
+
+          &.stage-finished {
+            background: linear-gradient(135deg, #8c8c8c 0%, #bfbfbf 100%);
+          }
+        }
+
+        // 类型角标
+        .type-badge {
+          position: absolute;
+          top: 12px;
+          right: 12px;
+          padding: 4px 10px;
+          border-radius: 6px;
+          font-size: 11px;
+          font-weight: 500;
+          color: #fff;
+          background: rgba(0, 0, 0, 0.5);
+          backdrop-filter: blur(8px);
+        }
+      }
+
+      // 内容区域
+      .card-content {
+        padding: 20px;
+        display: flex;
+        flex-direction: column;
+        gap: 12px;
 
         .card-title {
           font-size: 16px;
           font-weight: 600;
-        color: rgba(0, 0, 0, 0.85);
+          color: rgba(0, 0, 0, 0.88);
-        line-height: 1.4;
+          line-height: 1.5;
           display: -webkit-box;
           -webkit-line-clamp: 2;
           -webkit-box-orient: vertical;
           overflow: hidden;
         }
 
-      .card-desc {
+        .card-meta {
-        font-size: 14px;
+          display: flex;
+          flex-direction: column;
+          gap: 8px;
+
+          .meta-item {
+            display: flex;
+            align-items: center;
+            gap: 8px;
+            font-size: 13px;
             color: rgba(0, 0, 0, 0.45);
-        line-height: 1.6;
+
+            .anticon {
+              font-size: 14px;
+              color: rgba(0, 0, 0, 0.35);
+            }
+          }
         }
 
-      .card-tags {
+        .card-footer {
           display: flex;
-        flex-wrap: wrap;
+          align-items: center;
-        gap: 8px;
+          padding-top: 12px;
+          border-top: 1px solid #f5f5f5;
           margin-top: auto;
 
-        .tag {
+          .status-dot {
-          display: inline-flex;
+            width: 8px;
-          align-items: center;
+            height: 8px;
-          padding: 4px 12px;
+            border-radius: 50%;
-          border-radius: 16px;
+            background: #d9d9d9;
-          font-size: 12px;
+            margin-right: 8px;
-          font-weight: 500;
-          transition: all 0.2s;
-        }
 
-        .tag-type {
+            &.status-ongoing {
-          background: rgba($primary, 0.08);
+              background: #52c41a;
-          color: $primary;
+              box-shadow: 0 0 0 3px rgba(82, 196, 26, 0.2);
-          border: 1px solid rgba($primary, 0.2);
-        }
-
-        .tag-status {
-          background: rgba(0, 0, 0, 0.04);
-          color: rgba(0, 0, 0, 0.65);
-          border: 1px solid rgba(0, 0, 0, 0.08);
-
-          &.tag-ongoing {
-            background: rgba(82, 196, 26, 0.08);
-            color: #52c41a;
-            border-color: rgba(82, 196, 26, 0.2);
             }
           }
 
-        .tag-stage {
+          .status-text {
-          background: rgba(250, 173, 20, 0.08);
+            font-size: 13px;
-          color: #d48806;
+            color: rgba(0, 0, 0, 0.45);
-          border: 1px solid rgba(250, 173, 20, 0.2);
-        }
           }
 
           .card-actions {
             display: flex;
             flex-wrap: wrap;
             gap: 8px;
-        padding-top: 12px;
+            margin-left: auto;
-        border-top: 1px solid #f0f0f0;
+
-        margin-top: 4px;
+            // 渐变主要按钮 - 蓝色系
+            :deep(.ant-btn-primary) {
+              border: none;
+              border-radius: 16px;
+              padding: 6px 16px;
+              height: auto;
+              font-size: 13px;
+              background: linear-gradient(135deg, #1890ff 0%, #0050b3 100%);
+              box-shadow: 0 4px 12px rgba(24, 144, 255, 0.4);
+              transition: all 0.3s ease;
+
+              &:hover {
+                background: linear-gradient(135deg, #40a9ff 0%, #1890ff 100%);
+                box-shadow: 0 6px 16px rgba(24, 144, 255, 0.5);
+                transform: translateY(-1px);
+              }
+
+              &:active {
+                transform: translateY(0);
+                box-shadow: 0 2px 8px rgba(24, 144, 255, 0.4);
+              }
+            }
+
+            // 渐变次要按钮
+            :deep(.ant-btn-default) {
+              border: none;
+              border-radius: 16px;
+              padding: 6px 16px;
+              height: auto;
+              font-size: 13px;
+              background: linear-gradient(135deg, #f5f7fa 0%, #e8ecf0 100%);
+              color: rgba(0, 0, 0, 0.75);
+              box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
+              transition: all 0.3s ease;
+
+              &:hover {
+                background: linear-gradient(135deg, #e8ecf0 0%, #dce1e6 100%);
+                color: #1890ff;
+                box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
+                transform: translateY(-1px);
+              }
+
+              &:active {
+                transform: translateY(0);
+                box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
+              }
+            }
+          }
+        }
       }
     }
 
     .pagination-container {
       grid-column: 1 / -1;
-      margin-top: 24px;
+      margin-top: 32px;
       display: flex;
       justify-content: center;
     }
   }
 }
+
+// 响应式适配
+@media (max-width: 768px) {
+  .contests-activities-page {
+    padding: 16px;
+
+    .contests-grid {
+      grid-template-columns: 1fr;
+      gap: 16px;
+
+      .contest-card {
+        .card-poster {
+          height: 160px;
+        }
+
+        .card-content {
+          padding: 16px;
+
+          .card-footer {
+            flex-wrap: wrap;
+            gap: 12px;
+
+            .card-actions {
+              width: 100%;
+              margin-left: 0;
+              justify-content: flex-start;
+            }
+          }
+        }
+      }
+    }
+  }
+}
 </style>

frontend/src/views/contests/components/SubmitWorkDrawer.vue

@@ -560,8 +560,9 @@ const handleSubmit = async () => {
 
     submitLoading.value = true
 
-    let workFileUrl = ""
+    let modelFiles: string[] = []
     let previewUrl = ""
+    let previewUrlsList: string[] = []
     const attachmentUrls: string[] = []
 
     if (uploadMode.value === "history") {
@@ -570,8 +571,24 @@ const handleSubmit = async () => {
         message.error("请选择一个3D作品")
         return
       }
-      workFileUrl = form.selectedWork.resultUrl || ""
+      // 优先使用数组形式的 resultUrls 和 previewUrls
+      const resultUrls = form.selectedWork.resultUrls || []
+      previewUrlsList = form.selectedWork.previewUrls || []
+
+      // 如果有多个模型URL，全部放入 files 数组
+      if (resultUrls.length > 0) {
+        modelFiles = [...resultUrls]
+      } else if (form.selectedWork.resultUrl) {
+        // 兼容旧数据，只有单个 resultUrl
+        modelFiles = [form.selectedWork.resultUrl]
+      }
+
+      // 预览图：优先使用数组的第一个作为主预览图
+      if (previewUrlsList.length > 0) {
+        previewUrl = previewUrlsList[0]
+      } else {
         previewUrl = form.selectedWork.previewUrl || ""
+      }
     } else {
       // 本地上传模式
       if (!form.localWorkFile) {
@@ -585,7 +602,8 @@ const handleSubmit = async () => {
 
       // 上传3D文件
       try {
-        workFileUrl = await uploadFile(form.localWorkFile)
+        const uploadedUrl = await uploadFile(form.localWorkFile)
+        modelFiles = [uploadedUrl]
       } catch (error: any) {
         message.error("3D文件上传失败：" + (error?.message || "未知错误"))
         submitLoading.value = false
@@ -595,6 +613,7 @@ const handleSubmit = async () => {
       // 上传预览图
       try {
         previewUrl = await uploadFile(form.localPreviewFile)
+        previewUrlsList = [previewUrl]
       } catch (error: any) {
         message.error("预览图上传失败：" + (error?.message || "未知错误"))
         submitLoading.value = false
@@ -616,8 +635,9 @@ const handleSubmit = async () => {
       registrationId: registrationIdRef.value,
       title: form.title,
       description: form.description,
-      files: [workFileUrl, ...attachmentUrls],
+      files: [...modelFiles, ...attachmentUrls],
       previewUrl: previewUrl,
+      previewUrls: previewUrlsList.length > 0 ? previewUrlsList : undefined,
     }
 
     await worksApi.submit(submitData)

frontend/src/views/contests/components/ViewWorkDrawer.vue

@@ -19,51 +19,56 @@
       </div>
 
       <div v-else class="work-detail">
-        <!-- 作品预览卡片 -->
+        <!-- 多模型预览网格 -->
-        <div class="work-preview-card">
+        <div class="models-preview-grid">
           <div
-            class="preview-wrapper"
+            v-for="(model, index) in modelItems"
-            @mouseenter="showActions = true"
+            :key="index"
-            @mouseleave="showActions = false"
+            class="model-preview-card"
+            @mouseenter="hoveredIndex = index"
+            @mouseleave="hoveredIndex = -1"
           >
             <!-- 预览图 -->
             <img
-              v-if="previewImageUrl"
+              v-if="model.previewUrl"
-              :src="previewImageUrl"
+              :src="model.previewUrl"
-              alt="作品预览"
+              alt="模型预览"
               class="preview-image"
-              @error="handlePreviewError"
+              @error="(e) => handlePreviewError(e, index)"
             />
             <div v-else class="preview-placeholder">
               <FileImageOutlined class="placeholder-icon" />
-              <span>暂无预览图</span>
+              <span>模型 {{ index + 1 }}</span>
             </div>
 
             <!-- 悬浮操作按钮 -->
             <transition name="fade">
-              <div v-show="showActions" class="actions-overlay">
+              <div v-show="hoveredIndex === index" class="actions-overlay">
-                <div class="actions-buttons">
                 <a-button
-                    v-if="workFile && is3DModelFile(workFile)"
+                  v-if="model.fileUrl && is3DModelFile(model.fileUrl)"
                   type="primary"
-                    @click="handlePreview3DModel(workFile)"
+                  size="small"
+                  @click="handlePreview3DModel(model.fileUrl, index)"
                 >
                   <template #icon><EyeOutlined /></template>
-                    预览模型
+                  3D预览
                 </a-button>
-                  <a-button
-                    v-if="workFile"
-                    @click="handleDownloadWork"
-                  >
-                    <template #icon><DownloadOutlined /></template>
-                    下载作品
-                  </a-button>
-                </div>
               </div>
             </transition>
+
+            <!-- 模型序号 -->
+            <div class="model-index">{{ index + 1 }}</div>
           </div>
         </div>
 
+        <!-- 下载按钮 -->
+        <div v-if="modelItems.length > 0" class="download-section">
+          <a-button @click="handleDownloadWork">
+            <template #icon><DownloadOutlined /></template>
+            下载全部模型
+          </a-button>
+        </div>
+
         <!-- 作品信息 -->
         <div class="work-info-section">
           <div class="info-row">
@@ -165,8 +170,8 @@ const authStore = useAuthStore()
 const visible = ref(false)
 const loading = ref(false)
 const work = ref<ContestWork | null>(null)
-const showActions = ref(false)
+const hoveredIndex = ref(-1)
-const previewError = ref(false)
+const previewErrors = ref<Record<number, boolean>>({})
 
 // 监听抽屉打开状态
 watch(
@@ -174,11 +179,11 @@ watch(
   async (newVal) => {
     visible.value = newVal
     if (newVal) {
-      previewError.value = false
+      previewErrors.value = {}
       await fetchUserWork()
     } else {
       work.value = null
-      showActions.value = false
+      hoveredIndex.value = -1
     }
   },
   { immediate: true }
@@ -234,39 +239,77 @@ const fetchUserWork = async () => {
   }
 }
 
-// 预览图 URL
+// 模型项目列表 - 解析 files 和 previewUrls 数组
-const previewImageUrl = computed(() => {
+interface ModelItem {
-  if (!work.value || previewError.value) return null
+  fileUrl: string
+  previewUrl: string
+}
 
-  // 优先使用 previewUrl
+const modelItems = computed<ModelItem[]>(() => {
-  if (work.value.previewUrl) {
+  if (!work.value) return []
-    return getFileUrl(work.value.previewUrl)
-  }
 
-  return null
+  // 解析 files 数组
-})
-
-// 作品文件（只取第一个）
-const workFile = computed(() => {
-  if (!work.value) return null
   let files = work.value.files || []
-
-  // 如果 files 是字符串（JSON），需要解析
   if (typeof files === "string") {
     try {
       files = JSON.parse(files)
     } catch {
-      return null
+      files = []
+    }
+  }
+  if (!Array.isArray(files)) files = []
+
+  // 解析 previewUrls 数组
+  let previewUrls = work.value.previewUrls || []
+  if (typeof previewUrls === "string") {
+    try {
+      previewUrls = JSON.parse(previewUrls)
+    } catch {
+      previewUrls = []
+    }
+  }
+  if (!Array.isArray(previewUrls)) previewUrls = []
+
+  // 如果没有 previewUrls 但有单个 previewUrl，使用它
+  if (previewUrls.length === 0 && work.value.previewUrl) {
+    previewUrls = [work.value.previewUrl]
+  }
+
+  // 过滤出3D模型文件（排除附件等）
+  const modelFiles = files.filter((f: any) => {
+    const url = typeof f === "object" && f?.fileUrl ? f.fileUrl : f
+    return url && is3DModelFile(url)
+  })
+
+  // 构建模型项目列表
+  return modelFiles.map((f: any, index: number) => {
+    const fileUrl = typeof f === "object" && f?.fileUrl ? f.fileUrl : f
+    const previewUrl = previewUrls[index] || previewUrls[0] || ""
+    return {
+      fileUrl: getFileUrl(fileUrl),
+      previewUrl: previewUrl && !previewErrors.value[index] ? getFileUrl(previewUrl) : "",
+    }
+  })
+})
+
+// 作品文件列表（用于下载）
+const workFiles = computed(() => {
+  if (!work.value) return []
+  let files = work.value.files || []
+
+  if (typeof files === "string") {
+    try {
+      files = JSON.parse(files)
+    } catch {
+      return []
     }
   }
 
-  if (!Array.isArray(files) || files.length === 0) return null
+  if (!Array.isArray(files)) return []
 
-  // 处理可能是对象 {fileUrl: string} 或字符串的情况
+  return files.map((f: any) => {
-  const firstFile = files[0]
+    return typeof f === "object" && f?.fileUrl ? f.fileUrl : f
-  return typeof firstFile === "object" && firstFile?.fileUrl
+  }).filter(Boolean)
-    ? firstFile.fileUrl
-    : firstFile
 })
 
 // 判断是否为3D模型文件
@@ -303,38 +346,57 @@ const getFileUrl = (fileUrl: string): string => {
 }
 
 // 预览图加载错误
-const handlePreviewError = () => {
+const handlePreviewError = (_e: Event, index: number) => {
-  previewError.value = true
+  previewErrors.value[index] = true
 }
 
-// 预览3D模型
+// 预览3D模型 - 支持多模型预览
-const handlePreview3DModel = (fileUrl: string) => {
+const handlePreview3DModel = (fileUrl: string, index: number) => {
   if (!fileUrl) {
     message.error("文件路径无效")
     return
   }
-  const fullUrl = getFileUrl(fileUrl)
+
   const tenantCode = route.params.tenantCode as string
+
+  // 收集所有模型URL用于多模型切换
+  const allModelUrls = modelItems.value.map((m) => m.fileUrl)
+  if (allModelUrls.length > 1) {
+    sessionStorage.setItem("model-viewer-urls", JSON.stringify(allModelUrls))
+    sessionStorage.setItem("model-viewer-index", String(index))
+  } else {
+    sessionStorage.removeItem("model-viewer-urls")
+    sessionStorage.removeItem("model-viewer-index")
+  }
+
   router.push({
     path: `/${tenantCode}/workbench/model-viewer`,
-    query: { url: fullUrl },
+    query: { url: fileUrl },
   })
 }
 
-// 下载作品
+// 下载作品 - 下载所有模型文件
 const handleDownloadWork = () => {
-  if (!workFile.value) {
+  if (workFiles.value.length === 0) {
     message.error("无作品文件")
     return
   }
-  const fileUrl = getFileUrl(workFile.value)
+
+  // 下载所有3D模型文件
+  workFiles.value.forEach((file, index) => {
+    if (is3DModelFile(file)) {
+      setTimeout(() => {
+        const fileUrl = getFileUrl(file)
         const link = document.createElement("a")
         link.href = fileUrl
-  link.download = work.value?.title || "作品"
+        link.download = `${work.value?.title || "作品"}_${index + 1}`
         link.target = "_blank"
         document.body.appendChild(link)
         link.click()
         document.body.removeChild(link)
+      }, index * 500) // 错开下载时间
+    }
+  })
   message.success("开始下载作品")
 }
 
@@ -425,28 +487,36 @@ const handleCancel = () => {
   padding: 0;
 }
 
-// 作品预览卡片
+// 多模型预览网格
-.work-preview-card {
+.models-preview-grid {
-  margin-bottom: 24px;
+  display: grid;
+  grid-template-columns: repeat(2, 1fr);
+  gap: 12px;
+  margin-bottom: 16px;
 }
 
-.preview-wrapper {
+.model-preview-card {
   position: relative;
-  width: 100%;
   aspect-ratio: 1;
   border-radius: 12px;
   overflow: hidden;
   background: #f5f5f5;
   cursor: pointer;
-}
+  transition: all 0.3s ease;
+  border: 2px solid transparent;
 
-.preview-image {
+  &:hover {
+    border-color: #1890ff;
+    box-shadow: 0 4px 12px rgba(24, 144, 255, 0.2);
+  }
+
+  .preview-image {
     width: 100%;
     height: 100%;
     object-fit: cover;
-}
+  }
 
-.preview-placeholder {
+  .preview-placeholder {
     width: 100%;
     height: 100%;
     display: flex;
@@ -457,12 +527,29 @@ const handleCancel = () => {
     background: linear-gradient(135deg, #f5f5f5 0%, #e8e8e8 100%);
 
     .placeholder-icon {
-    font-size: 64px;
+      font-size: 36px;
-    margin-bottom: 16px;
+      margin-bottom: 8px;
     }
 
     span {
-    font-size: 14px;
+      font-size: 12px;
+    }
+  }
+
+  .model-index {
+    position: absolute;
+    top: 8px;
+    left: 8px;
+    width: 24px;
+    height: 24px;
+    background: rgba(0, 0, 0, 0.6);
+    color: #fff;
+    border-radius: 50%;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-size: 12px;
+    font-weight: 500;
   }
 }
 
@@ -476,14 +563,11 @@ const handleCancel = () => {
   justify-content: center;
 }
 
-.actions-buttons {
+// 下载区域
+.download-section {
+  margin-bottom: 20px;
   display: flex;
-  flex-direction: column;
+  justify-content: center;
-  gap: 12px;
-
-  :deep(.ant-btn) {
-    min-width: 140px;
-  }
 }
 
 // 淡入淡出动画