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vue+srpingboot实现多文件导出

news 2025/5/22 12:46:12

项目场景：

解决方案：

直接上干货

<el-button type="warning" icon="el-icon-download" size="mini" class="no-margin"  @click="exportSelectedFiles" :disabled="selectedRows.length === 0">导出</el-button>

    async exportSelectedFiles() {if (this.selectedRows.length === 0) {this.$message.warning('请至少选择一条记录');return;}// 提取所有选中的文件的 idconst fileIds = this.selectedRows.map(row => row.id);// 请求文件路径数据const params = { id: fileIds };const fileResponse = await url.getFilePatchData(params);if (fileResponse.data && fileResponse.data.length > 0) {// 提取文件路径const filePaths = fileResponse.data.map(file => file.filepath);this.downloadMultipleFiles(filePaths);} else {this.$message.error('无法获取文件路径');}},

const fileResponse = await url.getFilePatchData(params);这行代码其实就是一个查询接口

选择这条数据将他下面所属的文档路径查询出来然后调用下载文档的方法

// 下载多个文件(打包为ZIP)downloadMultipleFiles(filePaths) {const params = { filePaths: filePaths };url.downloadMultiple(params).then(response => {// 关键修复：确保正确解析二进制流const blob = new Blob([response], { type: 'application/zip' });if (blob.size === 0) {this.$message.error('服务器返回空文件');return;}const downloadUrl = window.URL.createObjectURL(blob);const link = document.createElement('a');link.href = downloadUrl;link.download = `documents_${Date.now()}.zip`;document.body.appendChild(link);link.click();// 延迟清理以避免下载中断setTimeout(() => {document.body.removeChild(link);window.URL.revokeObjectURL(downloadUrl);}, 200);}).catch(error => {this.$message.error('文件下载失败: ' + error.message);});},

url.downloadMultiple(params)也是调用的后端接口跟this.axios=url一样

//多条导出zip@PostMapping("/download-multiple")public void downloadMultipleFiles(@RequestBody Map<String, List<String>> requestBody,HttpServletResponse response) throws IOException {response.setContentType("application/zip");response.setHeader("Content-Disposition", "attachment; filename=documents.zip");response.resetBuffer();try (ZipOutputStream zipOut = new ZipOutputStream(new BufferedOutputStream(response.getOutputStream()))) {byte[] buffer = new byte[8192];for (String filePath : requestBody.get("filePaths")) {Path file = Paths.get(filePath).normalize();if (!Files.exists(file) || Files.isDirectory(file)) continue;try (InputStream in = new BufferedInputStream(Files.newInputStream(file))) {ZipEntry entry = new ZipEntry(file.getFileName().toString());zipOut.putNextEntry(entry);int bytesRead;while ((bytesRead = in.read(buffer)) != -1) {zipOut.write(buffer, 0, bytesRead);}zipOut.closeEntry();zipOut.flush();}}}}

调用zip的插件导入对应的依赖即可实现多文件导出,导出会保存生成zip压缩包

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