LLJ附件系统全面优化：多格式文件预览与APK兼容性

啊鑫

4 天以前 fca192d3c38c5dcfbb6ace8bc71d6078f6a079b2

 pages/QC/LLJ/Add.vue

@@ -103,12 +103,6 @@



      <!-- 操作按钮区 -->
      <view class="action-buttons" v-if="this.current">
                  <button class="secondary-btn" @click="handleEmergencyRelease">紧急放行</button>
                  <button class="secondary-btn" @click="handleWithdraw">撤回</button>
                  <button class="secondary-btn" @click="getInspectionItems">获取检验项目</button>
      </view>
      


@@ -147,14 +141,22 @@
         </table>
      </view>

      <!-- 操作按钮区 -->
      <view class="action-buttons">
         <button class="secondary-btn" @click="addDestruction" v-if="this.current">破坏实验</button>
         <button class="secondary-btn" @click="uploadImages">上传/查看图片</button>
         <button class="secondary-btn" @click="fetchDrawingNumber">调取PLM图纸</button>
         <button class="secondary-btn" @click="viewAttachmentInfo">查看附件信息</button>
         <button class="secondary-btn" @click="addDefectDescription" v-if="this.current">添加不良描述</button>
         <button class="primary-btn" @click="submitInspection" v-if="this.current">检验提交</button>
      <!-- 页面内容区域 -->
      <view class="content-wrapper">
         <!-- 为底部按钮留出空间 -->
      </view>
		
      <!-- 固定在底部的操作按钮区 -->
      <view class="fixed-action-buttons">
         <button class="action-btn" @click="handleEmergencyRelease" v-if="this.current">紧急放行</button>
         <button class="action-btn" @click="handleWithdraw" v-if="this.current">撤回</button>
         <button class="action-btn" @click="getInspectionItems" v-if="this.current">获取检验项目</button>
         <button class="action-btn" @click="addDestruction" v-if="this.current">破坏实验</button>
         <button class="action-btn" @click="uploadImages">上传/查看图片</button>
         <button class="action-btn" @click="fetchDrawingNumber">调取PLM图纸</button>
         <button class="action-btn" @click="viewAttachmentInfo">查看附件信息</button>
         <button class="action-btn" @click="addDefectDescription" v-if="this.current">添加不良描述</button>
         <button class="action-btn primary" @click="submitInspection" v-if="this.current">检验提交</button>
      </view>
      <view v-if="remarksPopup" class="overlay">
         <view class="popup">
@@ -189,8 +191,8 @@
      
      <view class="barcode">
         <u-modal :show="drawingShow" title="图纸明细" @confirm="drawingConfirm" @cancel="drawingCancel"
            showCancelButton>
            <uni-table border stripe emptyText="暂无更多数据" style="margin-left: 5px;margin-right: 5px;height: 500px;">
            showCancelButton :z-index="1000">
            <uni-table border stripe emptyText="暂无更多数据" style="margin-left: 5px;margin-right: 5px;height: 400px;max-height: 60vh;overflow-y: auto;">
               <uni-tr>
                  <uni-th align="center">相关文档</uni-th>
                  <uni-th align="center" width="90">有无关联PDF文件</uni-th>
@@ -227,19 +229,16 @@
               <div class="attachment-detail-row"><span class="attachment-label">受控日期：</span><span>{{ selectedAttachment.fdate }}</span></div>
               <div class="attachment-detail-row"><span class="attachment-label">上传人：</span><span>{{ selectedAttachment.createBy }}</span></div>
               <div class="attachment-detail-row"><span class="attachment-label">上传时间：</span><span>{{ selectedAttachment.createDate }}</span></div>
               <div v-if="isPreviewable(selectedAttachment.fattach)" class="attachment-preview-area">
                  <div v-if="['pdf','jpg','jpeg','png','gif'].includes(selectedAttachment.fattach.trim().split('.').pop().toLowerCase())">
                     <iframe :src="getAttachmentUrl(selectedAttachment)" style="width:100%;height:320px;border-radius:10px;background:#f8fafc;" frameborder="0"></iframe>
                  </div>
                  <div v-else-if="['txt'].includes(selectedAttachment.fattach.trim().split('.').pop().toLowerCase())">
                     <iframe :src="getAttachmentUrl(selectedAttachment)" style="width:100%;height:320px;border-radius:10px;background:#f8fafc;" frameborder="0"></iframe>
                  </div>
                  <div v-else-if="['doc','docx','xls','xlsx'].includes(selectedAttachment.fattach.trim().split('.').pop().toLowerCase())">
                     <iframe :src="'https://view.officeapps.live.com/op/view.aspx?src=' + encodeURIComponent(getAttachmentUrl(selectedAttachment))" style="width:100%;height:320px;border-radius:10px;background:#f8fafc;" frameborder="0"></iframe>
                  </div>
               </div>
               <div v-else class="attachment-download-area">
                  <button class="attachment-download-link" @click="downloadAttachment(selectedAttachment)">下载附件</button>
               <div class="attachment-actions-detail">
                  <button class="attachment-action-btn preview-btn" 
                     @click="previewFtpFile(selectedAttachment)" 
                     v-if="isPreviewable(selectedAttachment.fattach)">
                     🔍 在线预览
                  </button>
                  <button class="attachment-action-btn download-btn" 
                     @click="downloadAttachment(selectedAttachment)">
                     📥 下载文件
                  </button>
               </div>
            </div>
            <div v-else class="attachment-detail-empty">暂无附件信息</div>
@@ -254,16 +253,58 @@
            <div v-else-if="attachments.length === 0">暂无附件</div>
            <ul class="attachment-list" v-else>
               <li v-for="item in attachments" :key="item.id">
                  <span class="attachment-name" @click="showAttachmentDetailDialog(item)">
                     {{ item.fattach }}
                  </span>
                  <div class="attachment-info">
                     <span class="attachment-name" @click="showAttachmentDetailDialog(item)">
                        {{ item.fattach }}
                     </span>
                     <div class="attachment-meta">
                        <span class="attachment-type">{{ item.ftype || '未知类型' }}</span>
                     </div>
                  </div>
                  <div class="attachment-actions">
                     <button class="secondary-btn" @click="showAttachmentDetailDialog(item)">详情</button>
                     <button class="secondary-btn preview-btn" @click="previewFtpFile(item)" 
                        v-if="isPreviewable(item.fattach)">预览</button>
                     <button class="secondary-btn" @click="downloadAttachment(item)">下载</button>
                  </div>
               </li>
            </ul>
            <button class="attachment-popup-close" @click="closeAttachmentPopup">关闭</button>
         </view>
      </view>
		
      <!-- 文件预览弹窗 -->
      <view v-if="showFilePreviewPopup" class="overlay">
         <view class="popup file-preview-popup">
            <h3 class="file-preview-title">{{ previewTitle }}</h3>
            <div class="file-preview-divider"></div>
            <div class="file-preview-content">
               <!-- 文本内容预览 -->
               <pre v-if="previewType === 'text'">{{ previewContent }}</pre>
					
               <!-- 图片内容预览 -->
               <view v-else-if="previewType === 'image'" class="image-preview-container">
                  <image :src="previewContent" mode="widthFix" style="width: 100%; max-height: 400px;"></image>
               </view>
					
               <!-- Excel 等 Office 文件提示 -->
               <view v-else-if="previewType === 'excel'" class="unsupported-preview">
                  <view class="unsupported-icon">📊</view>
                  <view class="unsupported-text">Excel 文件暂不支持在线预览</view>
                  <view class="unsupported-hint">请点击下载按钮获取完整文件</view>
               </view>
					
               <!-- 不支持的文件类型 -->
               <view v-else class="unsupported-preview">
                  <view class="unsupported-icon">📄</view>
                  <view class="unsupported-text">此文件格式暂不支持预览</view>
                  <view class="unsupported-hint">请点击下载按钮获取完整文件</view>
               </view>
            </div>
            <div class="file-preview-actions">
               <button v-if="previewType !== 'text'" class="file-preview-btn download-btn" @click="downloadPreviewFile">📥 下载文件</button>
               <button class="file-preview-btn close-btn" @click="closeFilePreview">关闭</button>
            </div>
         </view>
      </view>
   </view>
@@ -325,6 +366,11 @@
            attachmentsLoading: false,
            selectedAttachment: null,
            showAttachmentDetail: false,
            showFilePreviewPopup: false,
            previewContent: '',
            previewTitle: '',
            previewItemNo: '',
            previewType: '', // 'text', 'image', 'excel', 'unsupported'
            
         }
      },
@@ -1286,6 +1332,11 @@
               this.attachmentsLoading = false;
               if (res.status === 0) {
                  this.attachments = res.data.tbBillList;
                  // 为每个附件设置默认可用状态
                  this.attachments.forEach((item, index) => {
                     this.$set(item, 'ftpAvailable', true); // 默认认为文件可用
                     this.$set(item, 'checking', false);
                  });
               } else if (res.status === 1 && res.message === "该检验单未上传附件信息！") {
                  uni.showToast({ title: res.message, icon: "none" });
               } else {
@@ -1297,10 +1348,10 @@
            this.showAttachmentPopup = false;
         },
         getAttachmentUrl(item) {
            const baseUrl = "http://192.168.1.22:10054";
            // 去除所有空白字符（包括中英文空格、制表符等）
            let fileName = item.fattach.replace(/[\s\u3000]+/g, '').trim();
            return baseUrl + "/api/LLJ/DownloadAttachment?itemNo=" + encodeURIComponent(item.itemNo) + "&fileName=" + encodeURIComponent(fileName);
            let fileName = item.fattach.replace(/[\s\u3000\r\n]+/g, '').trim();
            // 统一使用FTP下载接口，包含FTP服务器地址
            return this.$store.state.serverInfo.serverAPI + "/LLJ/DownloadFtpFile?itemNo=" + encodeURIComponent(item.itemNo) + "&fileName=" + encodeURIComponent(fileName) + "&ftpServer=" + encodeURIComponent(this.$store.state.serverInfo.ftpServer);
         },
         showAttachmentDetailDialog(item) {
            console.log('查看详情', item);
@@ -1319,7 +1370,13 @@
            const ext = filename.trim().split('.').pop().toLowerCase();
            // 支持在线预览的文件类型
            return [
               'pdf', 'jpg', 'jpeg', 'png', 'gif', 'txt', 'doc', 'docx', 'xls', 'xlsx'
               'pdf',           // PDF文件
               'jpg', 'jpeg', 'png', 'gif', 'bmp', 'webp',  // 图片文件
               'txt', 'log', 'md',  // 文本文件
               'doc', 'docx',   // Word文档
               'xls', 'xlsx',   // Excel表格
               'ppt', 'pptx',   // PowerPoint演示文稿
               'csv'            // CSV文件
            ].includes(ext);
         },
         // 处理附件下载错误
@@ -1330,32 +1387,474 @@
               showCancel: false
            });
         },
         downloadAttachment(item) {
            const baseUrl = "http://192.168.1.22:10054";
            // 去除所有空格、全角空格、回车、换行
         // 预览FTP文件
         previewFtpFile(item) {
            const fileName = item.fattach.replace(/[\s\u3000\r\n]+/g, '').trim();
            const url = baseUrl + "/api/Llj/DownloadFtpFile?itemNo=" + encodeURIComponent(item.itemNo) + "&fileName=" + encodeURIComponent(fileName);
            uni.downloadFile({
            const fileExt = fileName.split('.').pop().toLowerCase();
				
            // 检查文件类型是否支持预览
            if (!this.isPreviewable(fileName)) {
               uni.showModal({
                  title: '不支持预览',
                  content: '该文件类型不支持在线预览，请下载后查看',
                  showCancel: false
               });
               return;
            }
				
            const previewUrl = this.$store.state.serverInfo.serverAPI + "/LLJ/PreviewFtpFile?itemNo=" + encodeURIComponent(item.itemNo) + "&fileName=" + encodeURIComponent(fileName) + "&ftpServer=" + encodeURIComponent(this.$store.state.serverInfo.ftpServer);
				
            // 根据文件类型进行不同的预览处理
            if (['pdf'].includes(fileExt)) {
               this.previewPdfFile(previewUrl, fileName);
            } else if (['jpg', 'jpeg', 'png', 'gif', 'bmp'].includes(fileExt)) {
               this.previewImageFile(previewUrl, fileName);
            } else if (['txt'].includes(fileExt)) {
               this.previewTextFile(previewUrl, fileName);
            } else if (['doc', 'docx', 'xls', 'xlsx', 'ppt', 'pptx'].includes(fileExt)) {
               this.previewOfficeFile(previewUrl, fileName);
            } else {
               // 尝试通用预览
               this.previewGenericFile(previewUrl, fileName);
            }
         },
			
         // 预览PDF文件
         previewPdfFile(url, fileName) {
            // 先下载PDF文件，转为base64后预览
            uni.request({
               url: url,
               method: 'GET',
               responseType: 'arraybuffer',
               success: (res) => {
                  if (res.statusCode === 200) {
                     if (typeof plus !== 'undefined' && plus.runtime && plus.runtime.openFile) {
                        plus.runtime.openFile({ path: res.tempFilePath }, () => {
                           uni.showToast({ title: '打开成功', icon: 'success' });
                        }, (e) => {
                           uni.showModal({ title: '提示', content: '文件下载成功，但无法自动打开。请在文件管理中手动查找并打开。', showCancel: false });
                        });
                     } else {
                        uni.showModal({ title: '提示', content: '文件下载成功，但当前环境无法自动打开。请在文件管理中手动查找并打开。', showCancel: false });
                     }
                     const base64Data = uni.arrayBufferToBase64(res.data);
                     // 存储到全局变量
                     getApp().globalData.tempPDF = base64Data;
                     uni.navigateTo({
                        url: `/pages/fileView/pdfView`
                     });
                  } else {
                     uni.showModal({ title: '下载失败', content: `下载失败，状态码：${res.statusCode}`, showCancel: false });
                     this.handlePreviewError(res.statusCode, fileName);
                  }
               },
               fail: (error) => {
                  uni.showModal({ title: '下载失败', content: `下载失败，请检查网络连接。${error.errMsg}`, showCancel: false });
                  this.handlePreviewError(0, fileName, error.errMsg);
               }
            });
         },
			
         // 预览图片文件
         previewImageFile(url, fileName) {
            // #ifdef APP-PLUS
            // APP环境：先下载到本地再预览，避免网络图片加载问题
            uni.showLoading({ title: '加载图片...' });
            uni.downloadFile({
               url: url,
               success: (res) => {
                  uni.hideLoading();
                  if (res.statusCode === 200) {
                     // 使用本地临时路径
                     uni.navigateTo({
                        url: `/pages/fileView/imageView?url=${encodeURIComponent(res.tempFilePath)}`
                     });
                  } else {
                     this.handlePreviewError(res.statusCode, fileName);
                  }
               },
               fail: (error) => {
                  uni.hideLoading();
                  this.handlePreviewError(0, fileName, error.errMsg);
               }
            });
            // #endif
				
            // #ifdef H5 || MP
            // H5和小程序：直接使用网络URL
            uni.navigateTo({
               url: `/pages/fileView/imageView?url=${encodeURIComponent(url)}`
            });
            // #endif
         },
			
         // 预览文本文件
         previewTextFile(url, fileName) {
            // 文本文件直接显示在弹窗中
            uni.showLoading({ title: '加载文件内容...' });
            uni.request({
               url: url,
               method: 'GET',
               success: (res) => {
                  uni.hideLoading();
                  if (res.statusCode === 200) {
                     const fileType = this.getFileType(fileName);
							
                     if (fileType === 'text') {
                        // 文本文件：显示内容
                        this.showFilePreview(res.data, fileName);
                     } else if (fileType === 'image') {
                        // 图片文件：显示图片URL
                        this.showFilePreview(url, fileName);
                     } else {
                        // 其他文件类型：显示提示信息
                        this.showFilePreview('', fileName);
                     }
                  } else {
                     this.handlePreviewError(res.statusCode, fileName);
                  }
               },
               fail: (error) => {
                  uni.hideLoading();
                  this.handlePreviewError(0, fileName, error.errMsg);
               }
            });
         },
			
         // 检测文件类型
         getFileType(fileName) {
            const fileExt = fileName.split('.').pop().toLowerCase();
				
            if (['txt', 'log', 'md', 'csv', 'json', 'xml'].includes(fileExt)) {
               return 'text';
            } else if (['jpg', 'jpeg', 'png', 'gif', 'bmp', 'webp'].includes(fileExt)) {
               return 'image';
            } else if (['xls', 'xlsx', 'doc', 'docx', 'ppt', 'pptx'].includes(fileExt)) {
               return 'excel';
            } else {
               return 'unsupported';
            }
         },
			
         // 显示文件预览弹窗
         showFilePreview(content, fileName) {
            this.previewContent = content;
            this.previewTitle = fileName;
            this.previewItemNo = this.selectedAttachment?.itemNo || '';
            this.previewType = this.getFileType(fileName);
            this.showFilePreviewPopup = true;
         },
			
         // 关闭文件预览弹窗
         closeFilePreview() {
            this.showFilePreviewPopup = false;
            this.previewContent = '';
            this.previewTitle = '';
            this.previewItemNo = '';
            this.previewType = '';
         },
			
         // 下载预览文件
         downloadPreviewFile() {
            const item = { fattach: this.previewTitle, itemNo: this.previewItemNo };
            this.downloadAttachment(item);
            this.closeFilePreview();
         },
			
         // 预览Office文件
         previewOfficeFile(url, fileName) {
            // 先检查Excel文件，使用专门的Excel预览页面
            const fileExt = fileName.split('.').pop().toLowerCase();
            if (['xls', 'xlsx'].includes(fileExt)) {
               // Excel文件预览
               uni.request({
                  url: url,
                  method: 'GET',
                  responseType: 'arraybuffer',
                  success: (res) => {
                     if (res.statusCode === 200) {
                        const base64Data = uni.arrayBufferToBase64(res.data);
                        // 存储 Base64 数据到本地存储
                        uni.setStorageSync('excelBase64Data', base64Data);
                        uni.navigateTo({
                           url: `/pages/fileView/excelView`
                        });
                     } else {
                        this.handlePreviewError(res.statusCode, fileName);
                     }
                  },
                  fail: (error) => {
                     this.handlePreviewError(0, fileName, error.errMsg);
                  }
               });
            } else if (['doc', 'docx'].includes(fileExt)) {
               // Word文件，尝试使用Word预览页面或者微软在线预览
               try {
                  const officePreviewUrl = `https://view.officeapps.live.com/op/view.aspx?src=${encodeURIComponent(url)}`;
                  // 如果有webView页面，使用webView预览
                  this.previewGenericFile(officePreviewUrl, fileName);
               } catch (error) {
                  this.handlePreviewError(0, fileName, '不支持此Office文件类型的预览');
               }
            } else {
               // 其他Office文件，使用微软在线预览服务
               const officePreviewUrl = `https://view.officeapps.live.com/op/view.aspx?src=${encodeURIComponent(url)}`;
               this.previewGenericFile(officePreviewUrl, fileName);
            }
         },
			
         // 通用文件预览
         previewGenericFile(url, fileName) {
            // 由于没有通用的webView页面，显示提示并提供下载
            uni.showModal({
               title: '文件预览',
               content: `文件 "${fileName}" 需要下载后查看，是否立即下载？`,
               showCancel: true,
               confirmText: '下载',
               cancelText: '取消',
               success: (res) => {
                  if (res.confirm) {
                     const item = { fattach: fileName, itemNo: this.selectedAttachment.itemNo };
                     this.downloadAttachment(item);
                  }
               }
            });
         },
			
         // 处理预览错误
         handlePreviewError(statusCode, fileName, errorMsg = '') {
            let message = '';
            if (statusCode === 404) {
               message = `文件 ${fileName} 在FTP服务器上不存在`;
            } else if (statusCode === 0) {
               message = `预览失败：${errorMsg}`;
            } else {
               message = `预览失败，状态码：${statusCode}`;
            }
				
            uni.showModal({
               title: '预览失败',
               content: message,
               showCancel: true,
               confirmText: '下载',
               cancelText: '取消',
               success: (res) => {
                  if (res.confirm) {
                     // 用户选择下载文件
                     const item = { fattach: fileName, itemNo: this.selectedAttachment.itemNo };
                     this.downloadAttachment(item);
                  }
               }
            });
         },
			
         downloadAttachment(item) {
            // 去除所有空格、全角空格、回车、换行
            const fileName = item.fattach.replace(/[\s\u3000\r\n]+/g, '').trim();
            // 使用配置的服务器地址和FTP服务器地址
            const url = this.$store.state.serverInfo.serverAPI + "/LLJ/DownloadFtpFile?itemNo=" + encodeURIComponent(item.itemNo) + "&fileName=" + encodeURIComponent(fileName) + "&ftpServer=" + encodeURIComponent(this.$store.state.serverInfo.ftpServer);
				
            // 检查运行环境
            // #ifdef H5
            // H5环境：使用浏览器下载
            this.downloadFileInBrowser(url, fileName);
            // #endif
				
            // #ifdef APP-PLUS
            // APP环境：使用uni.downloadFile
            this.downloadFileInApp(url, fileName);
            // #endif
				
            // #ifdef MP
            // 小程序环境：使用uni.downloadFile
            this.downloadFileInApp(url, fileName);
            // #endif
         },
			
         // 在浏览器中下载文件
         downloadFileInBrowser(url, fileName) {
            uni.showLoading({ title: '正在准备下载...' });
				
            // 方法1：创建隐藏的a标签下载
            try {
               const link = document.createElement('a');
               link.href = url;
               link.download = fileName;
               link.style.display = 'none';
               document.body.appendChild(link);
               link.click();
               document.body.removeChild(link);
					
               uni.hideLoading();
               uni.showToast({ 
                  title: '下载已开始', 
                  icon: 'success',
                  duration: 2000
               });
            } catch (error) {
               console.log('a标签下载失败，尝试window.open方式:', error);
               // 方法2：使用window.open
               try {
                  window.open(url, '_blank');
                  uni.hideLoading();
                  uni.showToast({ 
                     title: '下载已开始', 
                     icon: 'success',
                     duration: 2000
                  });
               } catch (error2) {
                  console.log('window.open下载失败，尝试fetch方式:', error2);
                  // 方法3：使用fetch下载
                  this.downloadFileWithFetch(url, fileName);
               }
            }
         },
			
         // 使用fetch下载文件
         downloadFileWithFetch(url, fileName) {
            fetch(url)
               .then(response => {
                  if (!response.ok) {
                     throw new Error(`HTTP error! status: ${response.status}`);
                  }
                  return response.blob();
               })
               .then(blob => {
                  // 创建blob URL
                  const blobUrl = window.URL.createObjectURL(blob);
						
                  // 创建下载链接
                  const link = document.createElement('a');
                  link.href = blobUrl;
                  link.download = fileName;
                  link.style.display = 'none';
                  document.body.appendChild(link);
                  link.click();
                  document.body.removeChild(link);
						
                  // 释放blob URL
                  window.URL.revokeObjectURL(blobUrl);
						
                  uni.hideLoading();
                  uni.showToast({ 
                     title: '下载成功', 
                     icon: 'success',
                     duration: 2000
                  });
               })
               .catch(error => {
                  console.error('Fetch下载失败:', error);
                  uni.hideLoading();
                  if (error.message.includes('404')) {
                     uni.showModal({ 
                        title: '文件不存在', 
                        content: `该附件在FTP服务器上不存在`,
                        showCancel: false 
                     });
                  } else {
                     uni.showModal({ 
                        title: '下载失败', 
                        content: `下载失败: ${error.message}`,
                        showCancel: false 
                     });
                  }
               });
         },
			
         // 在APP中下载文件
         downloadFileInApp(url, fileName) {
            // #ifdef APP-PLUS
            uni.showLoading({ title: '从FTP服务器下载中...' });
				
            // Android 获取存储路径
            const saveDir = plus.os.name === 'Android' ? plus.io.convertLocalFileSystemURL('_downloads/') : plus.io.convertLocalFileSystemURL('_documents/');
            const filePath = `${saveDir}${fileName}`;
				
            const downloadTask = uni.downloadFile({
               url: url,
               filePath: filePath, // 指定保存路径
               success: (res) => {
                  uni.hideLoading();
                  if (res.statusCode === 200) {
                     const fileInfo = {
                        name: fileName,
                        path: res.filePath || filePath,
                        tempPath: res.tempFilePath
                     };
							
                     uni.showModal({
                        title: '下载成功',
                        content: `文件已保存到：${fileInfo.path}`,
                        showCancel: true,
                        confirmText: '打开文件',
                        cancelText: '确定',
                        success: (modalRes) => {
                           if (modalRes.confirm) {
                              // 用户选择打开文件
                              this.openFileInApp(fileInfo);
                           }
                        }
                     });
                  } else if (res.statusCode === 404) {
                     uni.showModal({ 
                        title: '文件不存在', 
                        content: `该附件在FTP服务器上不存在`,
                        showCancel: false 
                     });
                  } else {
                     uni.showModal({ 
                        title: '下载失败', 
                        content: `状态码：${res.statusCode}`,
                        showCancel: false 
                     });
                  }
               },
               fail: (error) => {
                  uni.hideLoading();
                  console.error('下载失败:', error);
                  uni.showModal({ 
                     title: '下载失败', 
                     content: `网络错误：${error.errMsg}`,
                     showCancel: false 
                  });
               }
            });
				
            // 监听下载进度
            downloadTask.onProgressUpdate((res) => {
               const progress = Math.round(res.progress);
               uni.showLoading({ 
                  title: `下载中 ${progress}%`,
                  mask: true 
               });
            });
            // #endif
				
            // #ifdef MP
            // 小程序环境的简化实现
            uni.showLoading({ title: '下载中...' });
            uni.downloadFile({
               url: url,
               success: (res) => {
                  uni.hideLoading();
                  if (res.statusCode === 200) {
                     uni.showToast({ title: '下载完成', icon: 'success' });
                  }
               },
               fail: (error) => {
                  uni.hideLoading();
                  uni.showModal({ title: '下载失败', content: error.errMsg, showCancel: false });
               }
            });
            // #endif
         },
			
         // APP中打开文件
         openFileInApp(fileInfo) {
            // #ifdef APP-PLUS
            if (typeof plus !== 'undefined') {
               const filePath = fileInfo.path || fileInfo.tempPath;
					
               // 尝试打开文件
               plus.runtime.openFile(filePath, {}, (error) => {
                  console.error('打开文件失败:', error);
                  uni.showModal({
                     title: '无法打开',
                     content: '系统中没有找到能打开此文件的应用程序',
                     showCancel: false
                  });
               });
            }
            // #endif
         },

      }
@@ -1368,9 +1867,11 @@
      font-family: 'Microsoft YaHei', 'Segoe UI', sans-serif;
      max-width: 1000px;
      margin: 0 auto;
      padding: 20px;
      padding: 20px 20px 160px 20px; /* 底部增加padding为固定按钮留空间 */
      background-color: #fff;
      box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
      min-height: 100vh;
      position: relative;
   }

   /* 头部样式 */
@@ -1491,7 +1992,60 @@
      background-color: #f1f5f9;
   }

   /* 按钮样式 */
   /* 固定底部按钮样式 */
   .fixed-action-buttons {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background-color: #fff;
      box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
      padding: 10px 15px 20px 15px;
      z-index: 100;
      display: flex;
      flex-direction: column;
      gap: 8px;
      max-height: 150px;
      overflow-y: auto;
   }

   .action-btn {
      background-color: #ecf0f1;
      color: #34495e;
      padding: 12px 15px;
      border: none;
      border-radius: 6px;
      cursor: pointer;
      font-size: 14px;
      font-weight: 500;
      transition: all 0.3s ease;
      text-align: center;
      min-height: 44px;
      display: flex;
      align-items: center;
      justify-content: center;
   }

   .action-btn:hover {
      background-color: #d5dbdb;
      transform: translateY(-1px);
   }

   .action-btn.primary {
      background-color: #3498db;
      color: #fff;
   }

   .action-btn.primary:hover {
      background-color: #2980b9;
   }

   /* 内容包装器，为底部按钮留出空间 */
   .content-wrapper {
      height: 20px; /* 额外的空白区域 */
   }

   /* 原有按钮样式保持兼容 */
   .action-buttons {
      display: flex;
      gap: 10px;
@@ -1600,7 +2154,7 @@
      display: flex;
      justify-content: center;
      align-items: center;
      z-index: 10;
      z-index: 1000; /* 提高层级，确保在固定按钮上方 */
   }

   /* 弹窗整体美化 */
@@ -1612,6 +2166,9 @@
      border: none;
      position: relative;
      min-width: 260px;
      z-index: 1001; /* 确保弹窗内容在最上层 */
      max-height: 80vh; /* 限制最大高度，避免被底部按钮遮挡 */
      overflow-y: auto; /* 内容过多时可滚动 */
   }
   .attachment-popup-title {
      font-size: 22px;
@@ -1690,6 +2247,164 @@
      background: linear-gradient(90deg,#bdbdbd 0%,#e0e0e0 100%);
      color: #1976d2;
   }
	
   /* 附件详情页面的操作按钮 */
   .attachment-actions-detail {
      margin: 20px 0;
      display: flex;
      gap: 12px;
      justify-content: center;
      flex-wrap: wrap;
   }
   .attachment-action-btn {
      padding: 10px 20px;
      border: none;
      border-radius: 8px;
      font-size: 14px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
      display: flex;
      align-items: center;
      justify-content: center;
      min-width: 120px;
      box-shadow: 0 2px 4px rgba(0,0,0,0.1);
   }
   .attachment-action-btn.preview-btn {
      background: linear-gradient(135deg, #4CAF50, #45a049);
      color: white;
   }
   .attachment-action-btn.preview-btn:hover {
      background: linear-gradient(135deg, #45a049, #3d8b40);
      transform: translateY(-1px);
      box-shadow: 0 4px 8px rgba(0,0,0,0.15);
   }
   .attachment-action-btn.download-btn {
      background: linear-gradient(135deg, #2196F3, #1976D2);
      color: white;
   }
   .attachment-action-btn.download-btn:hover {
      background: linear-gradient(135deg, #1976D2, #1565C0);
      transform: translateY(-1px);
      box-shadow: 0 4px 8px rgba(0,0,0,0.15);
   }
	
   /* 文件预览弹窗样式 */
   .file-preview-popup {
      width: 80vw;
      max-width: 600px;
      max-height: 70vh;
      display: flex;
      flex-direction: column;
   }
	
   /* APP环境适配 */
   /* #ifdef APP-PLUS */
   .file-preview-popup {
      width: 85vw;
      max-height: 75vh;
   }
   .file-preview-content {
      max-height: 350px;
   }
   /* #endif */
   .file-preview-title {
      font-size: 18px;
      font-weight: 700;
      color: #222;
      margin-bottom: 8px;
      text-align: center;
      word-break: break-all;
   }
   .file-preview-divider {
      height: 1px;
      background: linear-gradient(90deg,#e0e7ef 0%,#f5f7fa 100%);
      margin-bottom: 16px;
   }
   .file-preview-content {
      flex: 1;
      max-height: 400px;
      overflow-y: auto;
      background: #f8fafc;
      border-radius: 8px;
      padding: 16px;
      margin-bottom: 16px;
      border: 1px solid #e2e8f0;
   }
   .file-preview-content pre {
      font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
      font-size: 12px;
      line-height: 1.5;
      color: #2d3748;
      white-space: pre-wrap;
      word-wrap: break-word;
      margin: 0;
   }
	
   /* 图片预览样式 */
   .image-preview-container {
      display: flex;
      justify-content: center;
      align-items: center;
      min-height: 200px;
   }
	
   /* 不支持文件类型的提示样式 */
   .unsupported-preview {
      text-align: center;
      padding: 40px 20px;
      color: #666;
   }
   .unsupported-icon {
      font-size: 48px;
      margin-bottom: 16px;
   }
   .unsupported-text {
      font-size: 16px;
      font-weight: 600;
      color: #333;
      margin-bottom: 8px;
   }
   .unsupported-hint {
      font-size: 14px;
      color: #999;
      line-height: 1.4;
   }
	
   .file-preview-actions {
      display: flex;
      gap: 12px;
      justify-content: center;
   }
   .file-preview-btn {
      padding: 8px 20px;
      border: none;
      border-radius: 6px;
      font-size: 14px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
      display: flex;
      align-items: center;
      justify-content: center;
      min-width: 120px;
   }
   .file-preview-btn.download-btn {
      background: linear-gradient(135deg, #2196F3, #1976D2);
      color: white;
   }
   .file-preview-btn.download-btn:hover {
      background: linear-gradient(135deg, #1976D2, #1565C0);
      transform: translateY(-1px);
   }
   .file-preview-btn.close-btn {
      background: linear-gradient(135deg, #e0e0e0, #bdbdbd);
      color: #444;
   }
   .file-preview-btn.close-btn:hover {
      background: linear-gradient(135deg, #bdbdbd, #9e9e9e);
      transform: translateY(-1px);
   }
   /* 列表弹窗美化（保留原有） */
   .attachment-list {
      padding: 0;
@@ -1702,24 +2417,36 @@
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 8px 0;
      padding: 12px 0;
      border-bottom: 1px solid #f0f0f0;
   }
   .attachment-name {
   .attachment-info {
      flex: 1;
      margin-right: 10px;
   }
   .attachment-name {
      color: #3498db;
      cursor: pointer;
      font-weight: 500;
      transition: color 0.2s;
      margin-right: 10px;
      display: block;
      margin-bottom: 4px;
   }
   .attachment-name:hover {
      color: #217dbb;
      text-decoration: underline;
   }
   .attachment-meta {
      font-size: 12px;
   }
   .attachment-type {
      color: #7f8c8d;
      font-style: italic;
   }
   .attachment-actions {
      display: flex;
      gap: 8px;
      flex-shrink: 0;
   }
   .attachment-list .secondary-btn {
      padding: 4px 10px;
@@ -1734,6 +2461,15 @@
      background: #e6f0fa;
      color: #1976d2;
   }
   .preview-btn {
      background: #e8f5e8 !important;
      color: #2e7d2e !important;
      border-color: #a5d6a5 !important;
   }
   .preview-btn:hover {
      background: #d4eecc !important;
      color: #1e5f1e !important;
   }
   .attachment-popup-close {
      margin-top: 18px;
      width: 100%;