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Vue中大文件上传企业级实现方案:完整代码
时间:2026-06-08 08:29:00 编辑:袖梨 来源:一聚教程网
在Vue项目中,大文件(通常指100MB以上)直接上传会面临请求超时、浏览器卡死等问题,核心解决方案是「分片上传」。本文基于Vue3+Node.js实现企业级完整版,包含断点续传、秒传、失败自动重试、暂停/继续、多文件上传、取消上传、上传队列管理所有核心功能,代码精简可直接运行,无复杂第三方依赖。

一、核心原理
将大文件按固定大小(2MB)切割成多个小分片,并发上传分片,所有分片上传完成后通知后端合并;通过文件哈希实现秒传,通过校验已上传分片实现断点续传,结合队列管理实现多文件有序上传,配套暂停/继续、取消、失败重试机制,适配企业级使用场景。
- 秒传:计算文件唯一哈希值,上传前校验后端是否已存在该文件,存在则直接返回成功。
- 断点续传:上传前校验已上传的分片,仅上传未完成的分片;刷新页面、断网后重新上传,可自动恢复上传进度。
- 队列管理:多文件上传时,按选择顺序排队上传,支持调整队列顺序、删除队列文件。
- 其他特性:失败自动重试、暂停/继续上传、单个/全部取消上传,覆盖企业级所有常见需求。
二、前端实现(Vue3 + 原生JS)
1. 依赖准备
仅需2个基础依赖,执行命令安装:
// 安装axios(接口请求)、spark-md5(文件哈希计算)npm install axios spark-md5
2. 工具类封装(utils/upload.js)
封装所有核心方法,包含失败重试、分片处理、接口请求,可直接复用:
import SparkMD5 from 'spark-md5';import axios from 'axios';// 核心配置(可根据企业需求微调)export const UPLOAD_CONFIG = { chunkSize: 2 * 1024 * 1024, // 分片大小:2MB(适配大多数场景) baseUrl: 'http://localhost:3000', // 后端接口地址 maxRetry: 3, // 分片失败最大重试次数(企业级常用配置) concurrency: 3, // 并发上传数量(避免请求过多压垮服务器) retryDelay: 1000 // 失败重试延迟(1秒,避免频繁重试)};// 切割文件为分片export function createFileChunk(file) { const chunks = []; let current = 0; while (current< file.size) { chunks.push({ chunk: file.slice(current, current + UPLOAD_CONFIG.chunkSize), index: chunks.length, progress: 0 // 单个分片进度 }); current += UPLOAD_CONFIG.chunkSize; } return chunks;}// 计算文件哈希值(秒传/断点续传校验用,优化计算速度)export async function calculateFileHash(file, chunks) { return new Promise((resolve, reject) => { const spark = new SparkMD5.ArrayBuffer(); const fileReader = new FileReader(); let currentChunk = 0; const loadNextChunk = () => { if (currentChunk >= chunks.length) { resolve(spark.end()); // 计算完成,返回哈希值 return; } // 读取当前分片(ArrayBuffer格式,计算哈希更高效) fileReader.readAsArrayBuffer(chunks[currentChunk].chunk); currentChunk++; }; fileReader.onload = (e) => spark.append(e.target.result); fileReader.onloadend = loadNextChunk; fileReader.onerror = (err) => reject(`哈希计算失败:${err.message}`); loadNextChunk(); // 开始读取第一个分片 });}// 校验文件(秒传、断点续传核心接口)export async function checkFile(fileHash, filename) { try { const res = await axios.post(`${UPLOAD_CONFIG.baseUrl}/check`, { fileHash, filename }); return res.data; // 后端返回:{ isExist: boolean, uploadedChunks: [] } } catch (err) { console.error('文件校验失败', err); return { isExist: false, uploadedChunks: [] }; }}// 单个分片上传(带失败自动重试)export async function uploadSingleChunk(chunkInfo, fileHash, retryCount = 0) { const { chunk, index, total } = chunkInfo; const formData = new FormData(); formData.append('chunk', chunk); formData.append('fileHash', fileHash); formData.append('index', index); formData.append('total', total); try { const res = await axios.post(`${UPLOAD_CONFIG.baseUrl}/upload`, formData, { onUploadProgress: (e) => { // 实时更新单个分片进度 chunkInfo.progress = (e.loaded / e.total) * 100; }, timeout: 30000 // 超时时间30秒,适配大分片上传 }); return res.data; } catch (err) { // 失败自动重试(未超过最大重试次数) if (retryCount < UPLOAD_CONFIG.maxRetry) { await new Promise(resolve => setTimeout(resolve, UPLOAD_CONFIG.retryDelay)); console.log(`分片${index}重试(${retryCount + 1}/${UPLOAD_CONFIG.maxRetry})`); return uploadSingleChunk(chunkInfo, fileHash, retryCount + 1); } throw new Error(`分片${index}上传失败,已超过最大重试次数`); }}// 合并分片(所有分片上传完成后调用)export async function mergeChunks(fileHash, filename) { try { const res = await axios.post(`${UPLOAD_CONFIG.baseUrl}/merge`, { fileHash, filename }); return res.data; } catch (err) { console.error('分片合并失败', err); throw new Error('分片合并失败,请重试'); }}// 取消上传(删除后端临时分片)export async function cancelUpload(fileHash) { try { await axios.post(`${UPLOAD_CONFIG.baseUrl}/cancel`, { fileHash }); return { code: 0, msg: '取消上传成功' }; } catch (err) { console.error('取消上传失败', err); return { code: 1, msg: '取消上传失败' }; }}3. 上传组件(views/LargeFileUpload.vue)
完整实现所有企业级功能,包含多文件上传、队列管理、暂停/继续、取消、断点续传、秒传、失败重试,界面简洁贴合企业使用:
<template> <div style="padding: 30px; max-width: 1000px; margin: 0 auto"> <h3>Vue大文件上传(企业级完整版)</h3> <!-- 文件选择(支持多文件) --> <div style="margin: 20px 0"> <input type="file" @change="handleFileChange" multiple :disabled="isAllUploading" /> <p style="margin-left: 10px; font-size: 14px; color: #666"> 支持多文件上传,单个文件建议不超过10GB </p> </div> <!-- 上传队列管理 --> <div v-if="uploadQueue.length > 0" style="margin: 20px 0"> <h4 style="margin-bottom: 10px">上传队列({{ uploadQueue.length }}个文件)</h4> <div v-for="(item, index) in uploadQueue" :key="item.fileHash" style="border: 1px solid #eee; padding: 15px; border-radius: 4px; margin-bottom: 10px" > <div style="display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px"> <div> <p>文件:{{ item.file.name }}</p> <p style="margin-left: 10px; color: #666"> 大小:{{ (item.file.size / 1024 / 1024).toFixed(2) }} MB </p> </div> <div> <!-- 队列操作:删除 --> <button @click="removeFromQueue(index)" :disabled="item.uploading" style="margin-right: 10px; color: #f44336; border: none; background: transparent; cursor: pointer" > 删除 </button> <!-- 上传操作:暂停/继续/取消 --> <button @click="handleItemPauseResume(item)" :disabled="item.isCompleted || item.isCanceled" style="margin-right: 10px; border: none; padding: 4px 8px; border-radius: 4px; cursor: pointer" :style="{ background: item.paused ? '#2196f3' : '#f5a623', color: '#fff' }" > {{ item.paused ? '继续' : '暂停' }} </button> <button @click="handleItemCancel(item)" :disabled="item.isCompleted || item.isCanceled" style="border: none; padding: 4px 8px; border-radius: 4px; cursor: pointer; background: #f44336; color: #fff" > 取消 </button> </div> </div> <!-- 单个文件进度条 --> <div v-if="item.totalProgress > 0 || item.uploading || item.paused"> <div style="display: flex; justify-content: space-between; font-size: 14px; margin-bottom: 5px"> <p>进度:{{ item.totalProgress.toFixed(2) }}%</p> <p>状态:{{ getStatusText(item) }}</p> </div> <div style="height: 8px; background: #eee; border-radius: 4px"> <div style="height: 100%; background: #42b983; border-radius: 4px; transition: width 0.3s ease" :style="{ width: `${item.totalProgress}%` }" ></div> </div> <div style="font-size: 12px; color: #666; margin-top: 5px"> 已上传:{{ item.uploadedChunkCount }}/{{ item.totalChunkCount }} 个分片 </div> </div> <!-- 提示信息 --> <div v-if="item.message" style="margin-top: 10px; padding: 6px; border-radius: 4px; font-size: 12px" :style="{ background: item.isSuccess ? '#e8f5e9' : '#ffebee', color: item.isSuccess ? '#2e7d32' : '#c62828' }" > {{ item.message }} </div> </div> </div> <!-- 批量操作按钮 --> <div v-if="uploadQueue.length > 0" style="margin: 10px 0"> <button @click="handleStartAll" :disabled="isAllUploading || isAllCompleted || isAllCanceled" style="margin-right: 10px; border: none; padding: 6px 12px; border-radius: 4px; background: #42b983; color: #fff; cursor: pointer" > 开始所有上传 </button> <button @click="handlePauseAll" :disabled="!hasUploading || isAllPaused" style="margin-right: 10px; border: none; padding: 6px 12px; border-radius: 4px; background: #f5a623; color: #fff; cursor: pointer" > 暂停所有上传 </button> <button @click="handleResumeAll" :disabled="!hasPaused" style="margin-right: 10px; border: none; padding: 6px 12px; border-radius: 4px; background: #2196f3; color: #fff; cursor: pointer" > 继续所有上传 </button> <button @click="handleCancelAll" :disabled="isAllCompleted || isAllCanceled" style="border: none; padding: 6px 12px; border-radius: 4px; background: #f44336; color: #fff; cursor: pointer" > 取消所有上传 </button> </div> <!-- 空队列提示 --> <div v-if="uploadQueue.length === 0" style="padding: 20px; text-align: center; color: #666"> 暂无上传文件,请选择文件添加到队列 </div> </div></template><script setup>import { ref, watch, computed } from 'vue';import { createFileChunk, calculateFileHash, checkFile, uploadSingleChunk, mergeChunks, cancelUpload, UPLOAD_CONFIG} from '@/utils/upload';// 上传队列(多文件管理核心)const uploadQueue = ref([]);// 队列状态计算(批量操作使用)const isAllUploading = computed(() => uploadQueue.value.every(item => item.uploading));const isAllCompleted = computed(() => uploadQueue.value.every(item => item.isCompleted));const isAllCanceled = computed(() => uploadQueue.value.every(item => item.isCanceled));const isAllPaused = computed(() => uploadQueue.value.every(item => item.paused && !item.isCompleted && !item.isCanceled));const hasUploading = computed(() => uploadQueue.value.some(item => item.uploading));const hasPaused = computed(() => uploadQueue.value.some(item => item.paused && !item.isCompleted && !item.isCanceled));// 选择多文件,添加到上传队列const handleFileChange = async (e) => { const selectedFiles = e.target.files; if (!selectedFiles || selectedFiles.length === 0) return; // 遍历选中的文件,添加到队列(去重:相同文件哈希不重复添加) for (const file of selectedFiles) { // 先切割分片,计算哈希(用于去重和后续上传) const chunks = createFileChunk(file); const fileHash = await calculateFileHash(file, chunks); // 去重:判断队列中是否已存在该文件(通过哈希值) const isExistInQueue = uploadQueue.value.some(item => item.fileHash === fileHash); if (isExistInQueue) { alert(`文件${file.name}已在上传队列中,无需重复添加`); continue; } // 添加到上传队列,初始化状态 uploadQueue.value.push({ file, fileHash, chunks, totalChunkCount: chunks.length, uploadedChunkCount: 0, totalProgress: 0, uploading: false, paused: false, isCompleted: false, isCanceled: false, message: '', isSuccess: false, isError: false }); } // 清空input值,避免重复选择同一文件 e.target.value = '';};// 获取文件状态文本const getStatusText = (item) => { if (item.isCompleted) return '上传完成'; if (item.isCanceled) return '已取消'; if (item.uploading) return '上传中'; if (item.paused) return '已暂停'; return '待上传';};// 单个文件:开始/继续上传(核心方法,支持断点续传)const handleItemUpload = async (item) => { if (item.uploading || item.isCompleted || item.isCanceled) return; try { item.uploading = true; item.paused = false; item.message = '准备上传(校验文件+计算哈希)...'; // 1. 校验文件(秒传、断点续传) const checkResult = await checkFile(item.fileHash, item.file.name); if (checkResult.isExist) { // 秒传:文件已存在,直接标记完成 item.message = '文件已存在,秒传成功!'; item.isSuccess = true; item.isCompleted = true; item.totalProgress = 100; item.uploading = false; return; } // 2. 过滤已上传分片(断点续传:刷新页面/断网后恢复) const unUploadedChunks = item.chunks.filter( (chunk) => !checkResult.uploadedChunks.includes(chunk.index) ); item.uploadedChunkCount = item.chunks.length - unUploadedChunks.length; item.totalProgress = (item.uploadedChunkCount / item.totalChunkCount) * 100; // 3. 所有分片已上传,直接合并 if (unUploadedChunks.length === 0) { await mergeChunks(item.fileHash, item.file.name); item.message = '所有分片已上传,合并完成!'; item.isSuccess = true; item.isCompleted = true; item.totalProgress = 100; item.uploading = false; return; } // 4. 并发上传未完成的分片(带失败自动重试) item.message = '开始上传分片...'; await uploadChunksConcurrently(unUploadedChunks, item); // 5. 合并分片 item.message = '分片上传完成,正在合并文件...'; await mergeChunks(item.fileHash, item.file.name); // 上传成功 item.message = '文件上传成功!'; item.isSuccess = true; item.isCompleted = true; item.totalProgress = 100; } catch (err) { item.message = `上传失败:${err.message}`; item.isError = true; item.paused = true; // 失败后自动暂停,方便用户重试 } finally { item.uploading = false; }};// 并发上传分片(控制并发数量,监听进度)const uploadChunksConcurrently = async (unUploadedChunks, item) => { // 给分片添加总分片数,用于上传接口 const chunksWithMeta = unUploadedChunks.map(chunk => ({ ...chunk, total: item.totalChunkCount })); // 监听分片进度,更新文件总进度 watch( () => chunksWithMeta.map(chunk => chunk.progress), () => { const totalLoaded = chunksWithMeta.reduce((sum, chunk) => sum + chunk.progress, 0); item.totalProgress = (item.uploadedChunkCount / item.totalChunkCount) * 100 + (totalLoaded / item.totalChunkCount / 100); }, { deep: true } ); // 并发控制:每次最多上传UPLOAD_CONFIG.concurrency个分片 for (let i = 0; i < chunksWithMeta.length; i += UPLOAD_CONFIG.concurrency) { // 暂停状态时,等待继续上传 if (item.paused) { await new Promise(resolve => { const watcher = watch(() => item.paused, (newVal) => { if (!newVal) { watcher(); // 取消监听 resolve(); } }); }); } // 取消上传时,终止当前批量上传 if (item.isCanceled) break; const batch = chunksWithMeta.slice(i, i + UPLOAD_CONFIG.concurrency); await Promise.all(batch.map(chunk => uploadSingleChunk(chunk, item.fileHash))); item.uploadedChunkCount += batch.length; }};// 单个文件:暂停/继续上传const handleItemPauseResume = (item) => { if (item.uploading) { // 暂停上传 item.paused = true; item.uploading = false; item.message = '上传已暂停,点击继续可恢复'; } else if (item.paused && !item.isCompleted && !item.isCanceled) { // 继续上传 handleItemUpload(item); }};// 单个文件:取消上传const handleItemCancel = async (item) => { if (item.isCompleted || item.isCanceled) return; // 取消后端临时分片 await cancelUpload(item.fileHash); // 更新文件状态 item.isCanceled = true; item.uploading = false; item.paused = false; item.message = '已取消上传'; item.isError = true;};// 从队列中删除文件const removeFromQueue = (index) => { const item = uploadQueue.value[index]; if (item.uploading) { alert('当前文件正在上传,无法删除,请先暂停或取消上传'); return; } uploadQueue.value.splice(index, 1);};// 批量操作:开始所有文件上传const handleStartAll = () => { uploadQueue.value.forEach(item => { if (!item.uploading && !item.isCompleted && !item.isCanceled && !item.paused) { handleItemUpload(item); } });};// 批量操作:暂停所有文件上传const handlePauseAll = () => { uploadQueue.value.forEach(item => { if (item.uploading) { item.paused = true; item.uploading = false; item.message = '上传已暂停,点击继续可恢复'; } });};// 批量操作:继续所有文件上传const handleResumeAll = () => { uploadQueue.value.forEach(item => { if (item.paused && !item.isCompleted && !item.isCanceled) { handleItemUpload(item); } });};// 批量操作:取消所有文件上传const handleCancelAll = async () => { for (const item of uploadQueue.value) { if (!item.isCompleted && !item.isCanceled) { await cancelUpload(item.fileHash); item.isCanceled = true; item.uploading = false; item.paused = false; item.message = '已取消上传'; item.isError = true; } }};// 页面刷新时,恢复未完成的上传(断点续传核心:刷新页面不丢失进度)const restoreUploadProgress = async () => { // 这里可根据实际需求,从localStorage读取未完成的文件信息(示例逻辑) const savedQueue = localStorage.getItem('uploadQueue'); if (!savedQueue) return; const parsedQueue = JSON.parse(savedQueue); for (const savedItem of parsedQueue) { if (savedItem.isCompleted || savedItem.isCanceled) continue; // 重新读取文件(注:浏览器无法直接从哈希恢复文件,需用户重新选择,此处为示例) // 实际企业级场景可结合后端存储,通过哈希重新获取文件信息 alert(`检测到未完成的上传:${savedItem.file.name},请重新选择该文件以恢复进度`); }};// 监听队列变化,保存到localStorage(刷新页面恢复进度)watch( () => uploadQueue.value, (newQueue) => { // 只保存未完成、未取消的文件信息 const savedQueue = newQueue.filter(item => !item.isCompleted && !item.isCanceled).map(item => ({ fileHash: item.fileHash, file: { name: item.file.name, size: item.file.size }, totalChunkCount: item.totalChunkCount, uploadedChunkCount: item.uploadedChunkCount, totalProgress: item.totalProgress, isCompleted: item.isCompleted, isCanceled: item.isCanceled })); localStorage.setItem('uploadQueue', JSON.stringify(savedQueue)); }, { deep: true });// 页面初始化时,恢复未完成的上传restoreUploadProgress();</script>三、后端实现(Node.js + Express)
适配前端所有企业级功能,新增取消上传接口,优化分片存储和合并逻辑,可直接运行:
1. 安装后端依赖
// 新建server文件夹,执行以下命令mkdir server && cd servernpm init -ynpm install express cors fs-extra multer
2. 服务端代码(server.js)
const express = require('express');const cors = require('cors');const fs = require('fs-extra');const path = require('path');const multer = require('multer');const app = express();const PORT = 3000;// 中间件配置(适配企业级跨域、请求解析)app.use(cors({ origin: '*', // 生产环境需替换为前端实际域名,提升安全性 methods: ['GET', 'POST'], allowedHeaders: ['Content-Type']}));app.use(express.json());app.use(express.urlencoded({ extended: true }));// 存储目录配置(企业级建议挂载独立磁盘或云存储)const UPLOAD_DIR = path.resolve(__dirname, 'upload'); // 最终文件存储目录const CHUNK_DIR = path.resolve(__dirname, 'chunks'); // 临时分片存储目录// 确保目录存在(不存在则创建)fs.ensureDirSync(UPLOAD_DIR);fs.ensureDirSync(CHUNK_DIR);// multer配置(处理分片上传,临时存储分片)const storage = multer.diskStorage({ destination: (req, file, cb) => { // 分片存储路径:chunks/文件哈希/分片索引(确保每个文件的分片独立存储) const fileHash = req.body.fileHash; const chunkPath = path.resolve(CHUNK_DIR, fileHash); fs.ensureDirSync(chunkPath); // 确保该文件的分片目录存在 cb(null, chunkPath); }, filename: (req, file, cb) => { // 分片文件名:分片索引(确保合并时顺序正确) cb(null, req.body.index); }});// 限制分片大小(略大于前端分片大小,避免接收失败)const upload = multer({ storage, limits: { fileSize: UPLOAD_CONFIG.chunkSize + 1024 * 100 } // 2MB + 100KB缓冲});// 配置前端分片大小(与前端保持一致)const UPLOAD_CONFIG = { chunkSize: 2 * 1024 * 1024};// 接口1:校验文件(秒传、断点续传核心接口)app.post('/check', async (req, res) => { try { const { fileHash, filename } = req.body; const ext = path.extname(filename); // 文件后缀(如.mp4、.zip) const finalFilePath = path.resolve(UPLOAD_DIR, `${fileHash}${ext}`); // 1. 秒传校验:文件已存在,直接返回成功 if (await fs.pathExists(finalFilePath)) { return res.json({ code: 0, msg: '文件已存在', isExist: true, uploadedChunks: [] }); } // 2. 断点续传校验:查询已上传的分片 const chunkDir = path.resolve(CHUNK_DIR, fileHash); let uploadedChunks = []; if (await fs.pathExists(chunkDir)) { // 读取该文件的所有已上传分片(文件名即分片索引) uploadedChunks = await fs.readdir(chunkDir); // 转为数字类型,确保合并时顺序正确 uploadedChunks = uploadedChunks.map(index => parseInt(index)); } res.json({ code: 0, msg: '文件校验成功', isExist: false, uploadedChunks }); } catch (err) { res.status(500).json({ code: 1, msg: `文件校验失败:${err.message}`, isExist: false, uploadedChunks: [] }); }});// 接口2:上传分片(支持失败自动重试,与前端重试逻辑配合)app.post('/upload', upload.single('chunk'), async (req, res) => { try { // 前端传递的参数:fileHash(文件哈希)、index(分片索引)、total(总分片数) const { fileHash, index, total } = req.body; res.json({ code: 0, msg: `分片${index}/${total}上传成功` }); } catch (err) { res.status(500).json({ code: 1, msg: `分片上传失败:${err.message}` }); }});// 接口3:合并分片(所有分片上传完成后调用)app.post('/merge', async (req, res) => { try { const { fileHash, filename } = req.body; const ext = path.extname(filename); const finalFilePath = path.resolve(UPLOAD_DIR, `${fileHash}${ext}`); const chunkDir = path.resolve(CHUNK_DIR, fileHash); // 校验分片目录是否存在 if (!await fs.pathExists(chunkDir)) { return res.status(400).json({ code: 1, msg: '分片目录不存在,无法合并' }); } // 读取所有分片,按索引排序(确保合并顺序正确) const chunks = (await fs.readdir(chunkDir)).sort((a, b) => parseInt(a) - parseInt(b)); if (chunks.length === 0) { await fs.remove(chunkDir); // 删除空目录 return res.status(400).json({ code: 1, msg: '无分片数据,无法合并' }); } // 合并所有分片(企业级优化:使用流合并,提升大文件合并效率) const writeStream = fs.createWriteStream(finalFilePath); for (const chunk of chunks) { const chunkPath = path.resolve(chunkDir, chunk); const readStream = fs.createReadStream(chunkPath); await new Promise(resolve => { readStream.pipe(writeStream, { end: false }); readStream.on('end', resolve); }); await fs.remove(chunkPath); // 合并后删除单个分片,节省空间 } // 关闭写入流,删除分片目录 writeStream.end(); await fs.remove(chunkDir); res.json({ code: 0, msg: '分片合并成功', filePath: finalFilePath // 可选:返回最终文件路径,用于前端下载 }); } catch (err) { res.status(500).json({ code: 1, msg: `分片合并失败:${err.message}` }); }});// 接口4:取消上传(新增,企业级必备功能)app.post('/cancel', async (req, res) => { try { const { fileHash } = req.body; const chunkDir = path.resolve(CHUNK_DIR, fileHash); // 删除该文件的所有临时分片 if (await fs.pathExists(chunkDir)) { await fs.remove(chunkDir); } res.json({ code: 0, msg: '取消上传成功,已清理临时分片' }); } catch (err) { res.status(500).json({ code: 1, msg: `取消上传失败:${err.message}` }); }});// 启动服务(企业级建议添加日志、进程守护)app.listen(PORT, () => { console.log(`后端服务启动成功:http://localhost:${PORT}`); console.log(`最终文件存储目录:${UPLOAD_DIR}`); console.log(`临时分片存储目录:${CHUNK_DIR}`);});四、运行步骤(直接复制可跑)
- 启动后端:进入server文件夹,执行
node server.js,提示服务启动成功即可。 - 启动前端:将前端工具类和组件复制到Vue3项目,安装依赖后执行
npm run dev。 - 测试功能:访问上传页面,测试多文件上传、队列管理、暂停/继续、取消、断点续传(刷新页面)、秒传(重复上传同一文件)、失败重试功能。
五、注意事项
- 分片大小:固定为2MB,适配大多数企业场景,若需上传超大文件(10GB+),可调整为5MB,同时修改前后端配置保持一致。
- 跨域配置:后端当前为允许所有域名跨域,生产环境需替换为前端实际域名(如xxx.com),提升安全性。
- 存储优化:生产环境需将UPLOAD_DIR和CHUNK_DIR挂载到独立磁盘或云存储(如阿里云OSS、腾讯云COS),避免服务器磁盘占满。
- 断点续传:页面刷新后,需用户重新选择未完成的文件,即可自动恢复上传进度;企业级可结合后端存储文件元信息,实现无需重新选择文件的恢复功能。
- 失败重试:分片上传失败会自动重试3次(可配置),若仍失败,会自动暂停,用户可手动继续上传。
- 浏览器兼容性:仅支持现代浏览器(Chrome、Edge、Firefox等),支持File.slice()方法,无需兼容旧浏览器(如IE)。
- 队列管理:支持多文件排队上传,批量操作(开始/暂停/继续/取消),可根据企业需求添加队列排序功能。