文件下载功能测试报告

// 下载文件的核心方法 async downloadFile(fileId, options = {}) { // 防止重复下载 if (this.downloads.has(fileId)) { return { success: false, message: '文件正在下载中' }; } try { this.downloads.add(fileId); // 1. 测试下载端点 const testResult = await this.testDownloadEndpoint(fileId); // 2. 获取文件信息 const fileInfo = await this.getFileInfo(fileId); // 3. 获取下载URL const urlResult = await this.getDownloadUrl(fileId); // 4. 执行下载 const link = document.createElement('a'); link.href = urlResult.url; link.download = fileInfo.filename; link.click(); return { success: true, fileName: fileInfo.filename }; } catch (error) { return { success: false, message: `下载失败: ${error.message}` }; } finally { this.downloads.delete(fileId); } }

// 网络异常处理策略 const downloadWithRetry = async (fileId, retries = 3) => { for (let i = 0; i < retries; i++) { try { return await downloadFile(fileId); } catch (error) { if (i === retries - 1) throw error; // 指数退避重试 const delay = Math.pow(2, i) * 1000; await new Promise(resolve => setTimeout(resolve, delay)); } } };

// 文件下载接口规范 { "GET /api/files/:id/download": { "headers": { "Authorization": "Bearer <token>" }, "response": { "success": { "status": 200, "body": { "file": { /* 文件信息 */ }, "downloadUrl": "string", "expiresIn": 3600 } }, "error": { "401": { "message": "Unauthorized" }, "404": { "message": "File not found" }, "500": { "message": "Internal server error" } } } } }