{"id":10020833,"date":"2025-06-17T02:40:12","date_gmt":"2025-06-16T18:40:12","guid":{"rendered":"https:\/\/itmax.cn\/?p=10020833"},"modified":"2025-06-17T02:40:12","modified_gmt":"2025-06-16T18:40:12","slug":"%e4%bd%bf%e7%94%a8nodejs%e7%9a%84express%e6%a1%86%e6%9e%b6%e5%ae%9e%e7%8e%b0%e5%a4%a7%e6%96%87%e4%bb%b6%e4%b8%8a%e4%bc%a0%e7%9a%84%e5%8a%9f%e8%83%bd%ef%bc%8c%e9%99%84%e5%ae%8c%e6%95%b4%e5%89%8d","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10020833","title":{"rendered":"\u4f7f\u7528nodejs\u7684express\u6846\u67b6\u5b9e\u73b0\u5927\u6587\u4ef6\u4e0a\u4f20\u7684\u529f\u80fd\uff0c\u9644\u5b8c\u6574\u524d\u540e\u7aefgithub\u4ee3\u7801"},"content":{"rendered":"<h2>\u95ee\u9898\u63cf\u8ff0<\/h2>\n<ul>\n<li>\u4e24\u5e74\u524d\uff0c\u7b14\u8005\u5199\u8fc7\u4e00\u7bc7\u6587\u7ae0 <a href=\"https:\/\/segmentfault.com\/a\/1190000043625438\" target=\"_blank\" rel=\"noopener noreferrer\">\u300a\u9762\u8bd5\u5b98\u6840\u6840\u4e00\u7b11\uff1a\u4f60\u6ca1\u505a\u8fc7\u5927\u6587\u4ef6\u4e0a\u4f20\u529f\u80fd\uff1f\u90a3\u4f60\u56de\u53bb\u7b49\u901a\u77e5\u5427\uff01\u300b<\/a><\/li>\n<li>\u5f53\u65f6\uff0c\u540e\u7aef\u662f\u7528java\u8bed\u8a00\u5199\u7684<\/li>\n<li>\u672c\u7bc7\u6587\u7ae0\uff0c\u5c31\u662f\u8bb2\u89e3\u4e00\u4e0b\uff0c\u540e\u7aef\u7684nodejs\u5982\u4f55\u5b9e\u73b0\u5927\u6587\u4ef6\u4e0a\u4f20<\/li>\n<li>\u540e\u7aef\u4f7f\u7528node\u7684express\u6846\u67b6\u5199<\/li>\n<li>\u5b8c\u6574\u4ee3\u7801\u5728github\u4e0a\uff1a<a href=\"https:\/\/link.segmentfault.com\/?enc=zUq0pCjBWld7Zk1otHwCGA%3D%3D.zwk%2FTnZla8COXhJBF1WBBAk%2F9KmW8Tn7QNFpSHxoAp23ACU4BrWgflAMqLo1D801\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">https:\/\/github.com\/shuirongshuifu\/bigfile<\/a><\/li>\n<\/ul>\n<blockquote><p>\u5728\u770b\u672c\u7bc7\u6587\u7ae0\u4e4b\u524d\uff0c\u5efa\u8bae\u770b\u4e00\u4e0b\u4e4b\u524d\u7684\u7b14\u8005\u7684\u5927\u6587\u4ef6\u4e0a\u4f20\u6587\u7ae0<\/p><\/blockquote>\n<h2>\u601d\u8def\u5206\u6790<\/h2>\n<p>\u5927\u6587\u4ef6\u5206\u7247\u4e0a\u4f20\u6d41\u7a0b\u56fe\u5982\u4e0b\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"723\" height=\"454\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/bVdjUNC\" alt=\"\" title=\"\"><\/p>\n<h3>\u4e09\u4e2a\u63a5\u53e3<\/h3>\n<ul>\n<li>\u5927\u6587\u4ef6\u4e0a\u4f20\u7684\u63a5\u53e3\u8fd8\u662f\u4e09\u4e2a\u63a5\u53e3<\/li>\n<li>\n<p>\u63a5\u53e3\u4e00\uff1a\u68c0\u67e5\u6587\u4ef6\u72b6\u6001<\/p>\n<ul>\n<li>\u72b6\u60011 \u662f\u5426\u5b8c\u6574\u6587\u4ef6\u5df2\u5b58\u5728<\/li>\n<li>\u72b6\u60012 \u662f\u5426\u6587\u4ef6\u4e0d\u5b8c\u6574\uff0c\u6709\u788e\u7247\u6587\u4ef6\uff08\u4e0a\u4e00\u6b21\u6ca1\u4e0a\u4f20\u5b8c\uff09<\/li>\n<li>\u72b6\u60010 \u6587\u4ef6\u4e0d\u5b58\u5728<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u63a5\u53e3\u4e8c\uff1a\u5206\u7247\u4e0a\u4f20\u63a5\u53e3<\/p>\n<ul>\n<li>\u9996\u5148\uff0c\u521b\u5efa\u5206\u7247\u5b58\u50a8\u76ee\u5f55<\/li>\n<li>\u7136\u540e\uff0c\u91cd\u547d\u540d\u5206\u7247\u6587\u4ef6\uff08\u4f7f\u7528\u7d22\u5f15\u4f5c\u4e3a\u6587\u4ef6\u540d\uff09<\/li>\n<li>\u63a5\u7740\uff0c\u628a\u4e0a\u4f20\u7684\u4e34\u65f6\u6587\u4ef6\u79fb\u52a8\u5230\u5206\u7247\u76ee\u5f55\u6587\u4ef6\u5939\u91cc\u9762\uff08\u4e0a\u4f20\u6210\u529f\u4e86\uff09<\/li>\n<li>\u6700\u540e\uff0c\u8fd4\u56de\u7ed9\u524d\u7aef\uff0c\u5df2\u7ecf\u4e0a\u4f20\u7684\u4e0a\u4f20\u5206\u7247\u6570\u7528\u4e8e\u8fdb\u5ea6\u8ba1\u7b97<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u63a5\u53e3\u4e09\uff1a\u628a\u5206\u7247\u6587\u4ef6\u7ed9\u5408\u5e76\u6210\u4e00\u4e2a\u6574\u4e2a\u7684\u5927\u6587\u4ef6<\/p>\n<ul>\n<li>\u9996\u5148\uff0c\u6211\u4eec\u628a\u6587\u4ef6\u5939\u4e2d\u7684\u4e00\u5806\u6587\u4ef6\u788e\u7247\u7ed9\u6309\u7167\u7d22\u5f15\u6392\u5e8f\uff08\u8981\u6309\u7167\u7d22\u5f15\u5408\u5e76\uff0c\u5426\u5219\u5408\u5e76\u597d\u7684\u6587\u4ef6\u5c31\u4f1a\u635f\u574f\uff09<\/li>\n<li>\u7136\u540e\uff0c\u521b\u5efa\u5408\u5e76\u6587\u4ef6\u76ee\u5f55\uff0c\u7528\u4e8e\u5b58\u653e\u5373\u5c06\u5408\u5e76\u5b8c\u6210\u7684\u5927\u6587\u4ef6<\/li>\n<li>\u800c\u540e\uff0c\u901a\u8fc7\u7ba1\u9053\u6d41\u7684\u5f62\u5f0f\uff0c\u628a\u6587\u4ef6\u788e\u7247\uff0c\u4e00\u4e2a\u53c8\u4e00\u4e2a\u5408\u5e76<\/li>\n<li>\u6700\u540e\uff0c\u544a\u77e5\u524d\u7aef\u6587\u4ef6\u5408\u5e76\u6210\u529f<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>\u6240\u7528\u5230\u7684\u5305<\/h3>\n<pre><code class=\"js\">{\n  &quot;dependencies&quot;: {\n    &quot;cors&quot;: &quot;^2.8.5&quot;,\n    &quot;express&quot;: &quot;^5.1.0&quot;,\n    &quot;fs-extra&quot;: &quot;^11.3.0&quot;,\n    &quot;multer&quot;: &quot;^1.4.5-lts.2&quot;,\n    &quot;path&quot;: &quot;^0.12.7&quot;\n  }\n}<\/code><\/pre>\n<ul>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=jyo7NgOJ5E%2BTjFBkiHAjyw%3D%3D.iNwa3uBCKlVTIBbVqyAvxm3oZLtlf8h5LShLwfhT6TU%2F%2FHC3u6RrehUwFkc3EtWY\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">cors<\/a> \u7528\u6765\u89e3\u51b3\u8de8\u57df\u7684\u4e2d\u95f4\u4ef6\uff0c\u65b9\u4fbf\u63a5\u53e3\u8bf7\u6c42\u770b\u6548\u679c<\/li>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=XbaAFM36hhyulHSdeH59FQ%3D%3D.%2BgCcEKsg4rIzjXYmCIZvF4z71YryWaSCDo88Bz503nA0wn0VHF8yuQd1KdjlfaCx\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">express<\/a> node\u6846\u67b6\uff0c\u5199\u8d77\u6765\u66f4\u5feb\uff0c\u66f4\u65b9\u4fbf<\/li>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=tvn325WmEL05KZu4GACxBQ%3D%3D.y8Q98DaACsaMI%2F9DTZqva1KFQyJpbmReBDI%2BViruarhZH95zG12%2FwEtm5vfYWvGu\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">fs-extra<\/a> \u662ffs\u6587\u4ef6\u7cfb\u7edf\u7684\u5347\u7ea7\u7248\uff0c\u5f3a\u5316\u7248\uff0c\u6bd4\u5982\uff0c\u53ef\u4ee5\u9012\u5f52\u76ee\u5f55\u64cd\u4f5c\u3001\u6587\u4ef6\u590d\u5236\u6216\u79fb\u52a8\u7b49\uff0c\u5f88\u5f3a\u5927<\/li>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=K7JPyevW8vATSA%2BV%2FV%2Bfkg%3D%3D.OdAn6xzTkOVLXcw7G2syAFSNIrUgL4FwLksgfXPFYOBwnvtAbuvEAabNjYiUPOAk\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">multer<\/a> \u7528\u4e8e\u5904\u7406\u6587\u4ef6\u4e0a\u4f20\u7684\u4e2d\u95f4\u4ef6\uff0c\u5f88\u5f3a\u5927<\/li>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=9rBDCP8cZss2ES%2BXMlKNEQ%3D%3D.XYgGPdIZBpOc9I0vkmxunYAZKNUf2DObSdFZ2ZRkv9UvoKzAIYz%2Bw2VQZtdGGwF5\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">path<\/a> \u6838\u5fc3\u6a21\u5757\uff0c\u7528\u4e8e\u5904\u7406\u6587\u4ef6\u5939\u548c\u6587\u4ef6\u7684\u8def\u5f84\u76f8\u5173\u7684<\/li>\n<\/ul>\n<h3>\u57fa\u672c\u914d\u7f6e<\/h3>\n<p>\u6bd4\u5982\uff0c\u914d\u7f6e\u5b58\u50a8\u5408\u5e76\u76ee\u5f55\uff0c\u7528\u4e8e\u5b58\u653e\u524d\u7aef\u4e0a\u4f20\u7684\u6587\u4ef6\u4ee5\u53ca\u5408\u5e76\u7684\u6587\u4ef6\u7b49<\/p>\n<pre><code class=\"js\">const express = require('express');\nconst multer = require('multer');\nconst fs = require('fs-extra');\nconst path = require('path');\nconst app = express();\nconst cors = require('cors');\n\napp.use(cors()); \/\/ \u542f\u7528CORS\u4e2d\u95f4\u4ef6,\u5141\u8bb8\u6240\u6709\u8de8\u57df\u8bf7\u6c42\n\n\/\/ \u914d\u7f6e\nconst FILE_STORE_PATH = path.join(__dirname, 'uploaded_files'); \/\/ \u5b58\u50a8\u8def\u5f84\nconst mergeDir = path.join(FILE_STORE_PATH, 'merge'); \/\/ \u5408\u5e76\u6587\u4ef6\u5b58\u50a8\u76ee\u5f55\nconst upload = multer({ dest: FILE_STORE_PATH }); \/\/ multer\u6587\u4ef6\u4e0a\u4f20\u4e2d\u95f4\u4ef6\n\n\/\/ \u521b\u5efa\u5fc5\u8981\u76ee\u5f55\nfs.ensureDirSync(FILE_STORE_PATH);\nfs.ensureDirSync(mergeDir);\n\n\/\/ \u9519\u8bef\u54cd\u5e94\u683c\u5f0f\nconst errorResponse = (code = -1, message = '\u5931\u8d25') =&gt; ({ resultCode: code, message });<\/code><\/pre>\n<h3>\u63a5\u53e3\u4e00\uff1a\u68c0\u67e5\u6587\u4ef6\u72b6\u6001<\/h3>\n<pre><code class=\"js\">\/\/ \u68c0\u67e5\u6587\u4ef6\u72b6\u6001\u63a5\u53e3\napp.post('\/bigfile\/check', (req, res) =&gt; {\n    const fileMd5 = req.query.fileMd5;\n    const mergePath = path.join(mergeDir, fileMd5);\n    const chunkDir = path.join(FILE_STORE_PATH, fileMd5);\n\n    try {\n        \/\/ \u68c0\u67e5\u662f\u5426\u5b8c\u6574\u6587\u4ef6\u5df2\u5b58\u5728\n        if (fs.existsSync(mergePath)) {\n            return res.json({ resultCode: 1, message: '\u6587\u4ef6\u5df2\u5b58\u5728' });\n        }\n\n        \/\/ \u68c0\u67e5\u662f\u5426\u6709\u5206\u7247\u6587\u4ef6\n        if (fs.existsSync(chunkDir)) {\n            const chunks = fs.readdirSync(chunkDir);\n            return res.json({\n                resultCode: 2,\n                resultData: chunks.map(c =&gt; parseInt(c)) \/\/ \u8fd4\u56de\u5df2\u7ecf\u5b58\u5728\u7684\u5206\u7247\u7d22\u5f15\u6570\u7ec4\n            });\n        }\n\n        \/\/ \u6587\u4ef6\u4e0d\u5b58\u5728\uff0c\u5168\u65b0\u4e0a\u4f20\n        res.json({ resultCode: 0, resultData: [] });\n\n    } catch (error) {\n        console.error('\u68c0\u67e5\u6587\u4ef6\u9519\u8bef:', error);\n        res.status(500).json(errorResponse());\n    }\n});<\/code><\/pre>\n<h3>\u63a5\u53e3\u4e8c\uff1a\u5206\u7247\u4e0a\u4f20\u63a5\u53e3<\/h3>\n<pre><code class=\"js\">\/\/ \u5206\u7247\u4e0a\u4f20\u63a5\u53e3\napp.post('\/bigfile\/upload', upload.single('file'), (req, res) =&gt; {\n    try {\n        const { chunk, chunks, name, md5 } = req.body;\n        const chunkIndex = parseInt(chunk);\n        const chunkDir = path.join(FILE_STORE_PATH, md5);\n\n        \/\/ \u521b\u5efa\u5206\u7247\u5b58\u50a8\u76ee\u5f55\n        fs.ensureDirSync(chunkDir);\n\n        \/\/ \u91cd\u547d\u540d\u5206\u7247\u6587\u4ef6\uff08\u4f7f\u7528\u7d22\u5f15\u4f5c\u4e3a\u6587\u4ef6\u540d\uff09\n        const oldPath = req.file.path;\n        const newPath = path.join(chunkDir, chunkIndex.toString());\n        fs.renameSync(oldPath, newPath);\n\n        \/\/ \u83b7\u53d6\u5df2\u4e0a\u4f20\u5206\u7247\u6570\u91cf\n        const uploadedChunks = fs.readdirSync(chunkDir).length;\n\n        res.json({\n            resultCode: 0,\n            resultData: uploadedChunks \/\/ \u8fd4\u56de\u5df2\u4e0a\u4f20\u5206\u7247\u6570\u7528\u4e8e\u8fdb\u5ea6\u8ba1\u7b97\n        });\n\n    } catch (error) {\n        console.error('\u5206\u7247\u4e0a\u4f20\u9519\u8bef:', error);\n        res.status(500).json(errorResponse());\n    }\n});<\/code><\/pre>\n<h3>\u63a5\u53e3\u4e09\uff1a\u628a\u5206\u7247\u6587\u4ef6\u7ed9\u5408\u5e76\u6210\u4e00\u4e2a\u6574\u4e2a\u7684\u5927\u6587\u4ef6\uff08\u91cd\u70b9\uff09<\/h3>\n<pre><code class=\"js\">\/\/ \u5408\u5e76\u6587\u4ef6\u63a5\u53e3\napp.post('\/bigfile\/merge', async (req, res) =&gt; {\n    const { fileName, fileMd5 } = req.query;\n    const chunkDir = path.join(FILE_STORE_PATH, fileMd5);\n    const mergeFilePath = path.join(mergeDir, fileMd5, fileName);\n\n    try {\n        \/\/ \u68c0\u67e5\u5206\u7247\u76ee\u5f55\u662f\u5426\u5b58\u5728\n        if (!fs.existsSync(chunkDir)) {\n            return res.json(errorResponse(1, '\u5206\u7247\u6587\u4ef6\u4e0d\u5b58\u5728'));\n        }\n\n        \/\/ \u83b7\u53d6\u6240\u6709\u5206\u7247\u6587\u4ef6\u5e76\u6309\u7d22\u5f15\u6392\u5e8f\n        const chunkFiles = fs.readdirSync(chunkDir)\n            .map(f =&gt; ({ name: f, index: parseInt(f) }))\n            .sort((a, b) =&gt; a.index - b.index)\n            .map(f =&gt; path.join(chunkDir, f.name));\n\n        \/\/ \u521b\u5efa\u5408\u5e76\u6587\u4ef6\u76ee\u5f55\n        fs.ensureDirSync(path.dirname(mergeFilePath));\n\n        \/\/ \u521b\u5efa\u53ef\u5199\u6d41\n        const writeStream = fs.createWriteStream(mergeFilePath);\n        \/\/ \u589e\u52a0\u76d1\u542c\u5668\u4e0a\u9650\uff08\u53ef\u9009\uff0c\u66f4\u597d\u7684\u505a\u6cd5\u662f\u4f18\u5316\u6d41\u5904\u7406\uff09\n        \/\/ writeStream.setMaxListeners(100);\n\n        \/\/ \u4f7f\u7528\u6d41\u7ba1\u9053\u9010\u4e2a\u5408\u5e76\u6587\u4ef6\n        await mergeChunksSequentially(chunkFiles, writeStream);\n\n        \/\/ \/\/ \u6e05\u7406\u5206\u7247\u6587\u4ef6\u548c\u76ee\u5f55\n        \/\/ fs.removeSync(chunkDir);\n\n        res.json({ resultCode: 0, message: '\u6587\u4ef6\u5408\u5e76\u6210\u529f' });\n\n    } catch (error) {\n        console.error('\u5408\u5e76\u6587\u4ef6\u9519\u8bef:', error);\n        \/\/ \u6e05\u7406\u53ef\u80fd\u5b58\u5728\u7684\u4e0d\u5b8c\u6574\u6587\u4ef6\n        if (fs.existsSync(mergeFilePath)) {\n            fs.removeSync(mergeFilePath);\n        }\n        res.status(500).json(errorResponse());\n    }\n});<\/code><\/pre>\n<ul>\n<li>\u6ce8\u610f\uff0c\u8fd9\u91cc\u4f7f\u7528\u7ba1\u9053\u6d41\uff0c<strong>\u5f02\u6b65<\/strong>\uff0c\u5408\u5e76\u5206\u7247\u6587\u4ef6<\/li>\n<li>\u82e5\u662f\u8003\u8651\u6027\u80fd\uff0c\u53ef\u4ee5\u8003\u8651\u5f00\u4e00\u4e2a\u989d\u5916\u7684\u7ebf\u7a0b\uff0c\u8f85\u52a9\u8fd0\u7b97\u5408\u5e76\u6587\u4ef6\u788e\u7247<\/li>\n<li>\u5f02\u6b65\u5408\u5e76\u5982\u4e0b\uff1a<\/li>\n<\/ul>\n<pre><code class=\"js\">\/\/ \u987a\u5e8f\u5408\u5e76\u5206\u7247\u6587\u4ef6\u7684\u8f85\u52a9\u51fd\u6570\uff08\u907f\u514d\u540c\u65f6\u6dfb\u52a0\u8fc7\u591a\u76d1\u542c\u5668\uff09\nfunction mergeChunksSequentially(chunkFiles, writeStream) {\n    return new Promise((resolve, reject) =&gt; {\n        \/\/ \u9012\u5f52\u5904\u7406\u6bcf\u4e2a\u5206\u7247\u6587\u4ef6\n        const processNextChunk = (index) =&gt; {\n            if (index &gt;= chunkFiles.length) {\n                \/\/ \u6240\u6709\u5206\u7247\u90fd\u5df2\u5904\u7406\u5b8c\u6bd5\n                writeStream.end();\n                return resolve();\n            }\n\n            const chunkPath = chunkFiles[index];\n            const readStream = fs.createReadStream(chunkPath);\n\n            readStream.on('error', (err) =&gt; {\n                reject(err);\n            });\n\n            readStream.on('end', () =&gt; {\n                \/\/ \u6b64\u5206\u7247\u5904\u7406\u5b8c\u6210\uff0c\u7ee7\u7eed\u4e0b\u4e00\u4e2a\n                processNextChunk(index + 1);\n            });\n\n            \/\/ \u7ba1\u9053\u4f20\u8f93\u6570\u636e\n            readStream.pipe(writeStream, { end: false });\n        };\n\n        \/\/ \u5f00\u59cb\u5904\u7406\u7b2c\u4e00\u4e2a\u5206\u7247\n        processNextChunk(0);\n\n        \/\/ \u76d1\u542c\u5199\u5165\u5b8c\u6210\u4e8b\u4ef6\n        writeStream.on('finish', resolve);\n        writeStream.on('error', reject);\n    });\n}<\/code><\/pre>\n<blockquote><p>\u81f3\u6b64\uff0c\u641e\u5b9a\uff0c\u603b\u7ed3\uff1a<\/p><\/blockquote>\n<ul>\n<li>\u5f53\u7136\u4e86\uff0c\u5b9e\u9645\u60c5\u51b5\uff0c\u6211\u4eec\u7684\u6587\u4ef6\u5b58\u50a8\u90fd\u662f\u653e\u5728oss\u4e0a\u7684<\/li>\n<li>\u4e5f\u5c31\u662f\u8bf4\uff0c\u5f53\u540e\u7aef\u628a\u6587\u4ef6\u5408\u5e76\u5b8c\u6210\u540e<\/li>\n<li>\u8fd8\u6709\u628a\u6587\u4ef6\u5b58\u50a8\u5230oss\u4e0a\u8fd9\u4e00\u6b65\uff0c\u6bd4\u5982\u5b58\u50a8\u5230minio\u3001\u963f\u91cc\u4e91\u3001\u817e\u8baf\u4e91\u4e0a\u7b49<\/li>\n<li>\u8fd9\u4e2a\uff0c\u6839\u636e\u5927\u5bb6\u7684\u5b9e\u9645\u60c5\u51b5\u540e\u7aef\u505a\u5904\u7406<\/li>\n<li>\u8fd9\u79cd\u60c5\u51b5\u662f\uff0c\u540e\u7aef\u5b58\u6574\u4e2a\u6587\u4ef6\uff0c\u4e0d\u5b58\u6587\u4ef6\u788e\u7247<\/li>\n<li>\u8fd8\u6709\u4e00\u79cd\u65b9\u6848\u662f\uff0c\u5b58\u6587\u4ef6\u788e\u7247\uff0c\u4e0d\u5b58\u6574\u4e2a\u6587\u4ef6\uff0c\u6570\u636e\u5e93\u5b58\u50a8\u5173\u8054\u5173\u7cfb<\/li>\n<li>\u5f53\u7528\u6237\u8bbf\u95ee\u8bf7\u6c42\u67d0\u4e2a\u6587\u4ef6\u7684\u65f6\u5019\uff0c\u67e5\u8be2\u6b64\u6587\u4ef6\u7684\u5173\u8054\u788e\u7247\uff0c\u5e76\u4e14\u901a\u8fc7\u901a\u8fc7\u6570\u636e\u6d41\u7684\u65b9\u5f0f\uff0c\u8fd4\u56de\u7ed9\u524d\u7aef<\/li>\n<li>\u4f46\u662f\u8fd9\u79cd\u65b9\u6848\u540e\u7aef\u4f1a\u7a0d\u5fae\u9ebb\u70e6\u4e00\u4e9b\uff0c\u4e0d\u8fc7\u8fd9\u6837\u5c31\u53ef\u4ee5\u4e0d\u7528\u4e00\u4e0b\u5b50\u7b97\u51fa\u6765\u524d\u7aef\u7684\u5927\u6587\u4ef6\u7684hash\u503c\u4ee5\u540e\uff0c\u518d\u53bb\u53d1\u8bf7\u6c42\u4e86<\/li>\n<li>\u4ece\u7528\u6237\u7684\u89d2\u5ea6\u800c\u8a00\uff0c\u8fd9\u79cd\u65b9\u5f0f\u66f4\u5feb\u4e00\u4e9b<\/li>\n<li>\u7b14\u8005\u6709\u4e00\u4e2a\u793a\u4f8bdemo\uff0c\u5927\u5bb6\u53ef\u4ee5\u62c9\u4ee3\u7801\u8dd1\u8d77\u6765\uff0c\u770b\u4e00\u4e0b\u6548\u679c\uff1a<a href=\"https:\/\/link.segmentfault.com\/?enc=%2BbP5NJSwZx3HwIf8cBm30A%3D%3D.6EzMODD%2BpI%2Bbu%2FyDEYZwJZE3b0LJzX1EFyvS2CZYbg9fVF8%2FYnBrhHu531rWbrKGBDIt6HsZu41UNo8fZNSQRA%3D%3D\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">https:\/\/github.com\/shuirongshuifu\/response-stream<\/a><\/li>\n<\/ul>\n<h2>\u5b8c\u6574express\u4ee3\u7801<\/h2>\n<pre><code class=\"js\">const express = require('express');\nconst multer = require('multer');\nconst fs = require('fs-extra');\nconst path = require('path');\nconst app = express();\nconst cors = require('cors');\n\napp.use(cors()); \/\/ \u542f\u7528CORS\u4e2d\u95f4\u4ef6,\u5141\u8bb8\u6240\u6709\u8de8\u57df\u8bf7\u6c42\n\n\/\/ \u914d\u7f6e\nconst FILE_STORE_PATH = path.join(__dirname, 'uploaded_files'); \/\/ \u5b58\u50a8\u8def\u5f84\nconst mergeDir = path.join(FILE_STORE_PATH, 'merge'); \/\/ \u5408\u5e76\u6587\u4ef6\u5b58\u50a8\u76ee\u5f55\nconst upload = multer({ dest: FILE_STORE_PATH }); \/\/ multer\u6587\u4ef6\u4e0a\u4f20\u4e2d\u95f4\u4ef6\n\n\/\/ \u521b\u5efa\u5fc5\u8981\u76ee\u5f55\nfs.ensureDirSync(FILE_STORE_PATH);\nfs.ensureDirSync(mergeDir);\n\n\/\/ \u9519\u8bef\u54cd\u5e94\u683c\u5f0f\nconst errorResponse = (code = -1, message = '\u5931\u8d25') =&gt; ({ resultCode: code, message });\n\n\/\/ \u68c0\u67e5\u6587\u4ef6\u72b6\u6001\u63a5\u53e3\napp.post('\/bigfile\/check', (req, res) =&gt; {\n    const fileMd5 = req.query.fileMd5;\n    const mergePath = path.join(mergeDir, fileMd5);\n    const chunkDir = path.join(FILE_STORE_PATH, fileMd5);\n\n    try {\n        \/\/ \u68c0\u67e5\u662f\u5426\u5b8c\u6574\u6587\u4ef6\u5df2\u5b58\u5728\n        if (fs.existsSync(mergePath)) {\n            return res.json({ resultCode: 1, message: '\u6587\u4ef6\u5df2\u5b58\u5728' });\n        }\n\n        \/\/ \u68c0\u67e5\u662f\u5426\u6709\u5206\u7247\u6587\u4ef6\n        if (fs.existsSync(chunkDir)) {\n            const chunks = fs.readdirSync(chunkDir);\n            return res.json({\n                resultCode: 2,\n                resultData: chunks.map(c =&gt; parseInt(c)) \/\/ \u8fd4\u56de\u5df2\u7ecf\u5b58\u5728\u7684\u5206\u7247\u7d22\u5f15\u6570\u7ec4\n            });\n        }\n\n        \/\/ \u6587\u4ef6\u4e0d\u5b58\u5728\uff0c\u5168\u65b0\u4e0a\u4f20\n        res.json({ resultCode: 0, resultData: [] });\n\n    } catch (error) {\n        console.error('\u68c0\u67e5\u6587\u4ef6\u9519\u8bef:', error);\n        res.status(500).json(errorResponse());\n    }\n});\n\n\/\/ \u5206\u7247\u4e0a\u4f20\u63a5\u53e3\napp.post('\/bigfile\/upload', upload.single('file'), (req, res) =&gt; {\n    try {\n        const { chunk, chunks, name, md5 } = req.body;\n        const chunkIndex = parseInt(chunk);\n        const chunkDir = path.join(FILE_STORE_PATH, md5);\n\n        \/\/ \u521b\u5efa\u5206\u7247\u5b58\u50a8\u76ee\u5f55\n        fs.ensureDirSync(chunkDir);\n\n        \/\/ \u91cd\u547d\u540d\u5206\u7247\u6587\u4ef6\uff08\u4f7f\u7528\u7d22\u5f15\u4f5c\u4e3a\u6587\u4ef6\u540d\uff09\n        const oldPath = req.file.path;\n        const newPath = path.join(chunkDir, chunkIndex.toString());\n        fs.renameSync(oldPath, newPath);\n\n        \/\/ \u83b7\u53d6\u5df2\u4e0a\u4f20\u5206\u7247\u6570\u91cf\n        const uploadedChunks = fs.readdirSync(chunkDir).length;\n\n        res.json({\n            resultCode: 0,\n            resultData: uploadedChunks \/\/ \u8fd4\u56de\u5df2\u4e0a\u4f20\u5206\u7247\u6570\u7528\u4e8e\u8fdb\u5ea6\u8ba1\u7b97\n        });\n\n    } catch (error) {\n        console.error('\u5206\u7247\u4e0a\u4f20\u9519\u8bef:', error);\n        res.status(500).json(errorResponse());\n    }\n});\n\n\/\/ \u5408\u5e76\u6587\u4ef6\u63a5\u53e3\napp.post('\/bigfile\/merge', async (req, res) =&gt; {\n    const { fileName, fileMd5 } = req.query;\n    const chunkDir = path.join(FILE_STORE_PATH, fileMd5);\n    const mergeFilePath = path.join(mergeDir, fileMd5, fileName);\n\n    try {\n        \/\/ \u68c0\u67e5\u5206\u7247\u76ee\u5f55\u662f\u5426\u5b58\u5728\n        if (!fs.existsSync(chunkDir)) {\n            return res.json(errorResponse(1, '\u5206\u7247\u6587\u4ef6\u4e0d\u5b58\u5728'));\n        }\n\n        \/\/ \u83b7\u53d6\u6240\u6709\u5206\u7247\u6587\u4ef6\u5e76\u6309\u7d22\u5f15\u6392\u5e8f\n        const chunkFiles = fs.readdirSync(chunkDir)\n            .map(f =&gt; ({ name: f, index: parseInt(f) }))\n            .sort((a, b) =&gt; a.index - b.index)\n            .map(f =&gt; path.join(chunkDir, f.name));\n\n        \/\/ \u521b\u5efa\u5408\u5e76\u6587\u4ef6\u76ee\u5f55\n        fs.ensureDirSync(path.dirname(mergeFilePath));\n\n        \/\/ \u521b\u5efa\u53ef\u5199\u6d41\n        const writeStream = fs.createWriteStream(mergeFilePath);\n        \/\/ \u589e\u52a0\u76d1\u542c\u5668\u4e0a\u9650\uff08\u53ef\u9009\uff0c\u66f4\u597d\u7684\u505a\u6cd5\u662f\u4f18\u5316\u6d41\u5904\u7406\uff09\n        \/\/ writeStream.setMaxListeners(100);\n\n        \/\/ \u4f7f\u7528\u6d41\u7ba1\u9053\u9010\u4e2a\u5408\u5e76\u6587\u4ef6\n        await mergeChunksSequentially(chunkFiles, writeStream);\n\n        \/\/ \/\/ \u6e05\u7406\u5206\u7247\u6587\u4ef6\u548c\u76ee\u5f55\n        \/\/ fs.removeSync(chunkDir);\n\n        res.json({ resultCode: 0, message: '\u6587\u4ef6\u5408\u5e76\u6210\u529f' });\n\n    } catch (error) {\n        console.error('\u5408\u5e76\u6587\u4ef6\u9519\u8bef:', error);\n        \/\/ \u6e05\u7406\u53ef\u80fd\u5b58\u5728\u7684\u4e0d\u5b8c\u6574\u6587\u4ef6\n        if (fs.existsSync(mergeFilePath)) {\n            fs.removeSync(mergeFilePath);\n        }\n        res.status(500).json(errorResponse());\n    }\n});\n\n\/\/ \u987a\u5e8f\u5408\u5e76\u5206\u7247\u6587\u4ef6\u7684\u8f85\u52a9\u51fd\u6570\uff08\u907f\u514d\u540c\u65f6\u6dfb\u52a0\u8fc7\u591a\u76d1\u542c\u5668\uff09\nfunction mergeChunksSequentially(chunkFiles, writeStream) {\n    return new Promise((resolve, reject) =&gt; {\n        \/\/ \u9012\u5f52\u5904\u7406\u6bcf\u4e2a\u5206\u7247\u6587\u4ef6\n        const processNextChunk = (index) =&gt; {\n            if (index &gt;= chunkFiles.length) {\n                \/\/ \u6240\u6709\u5206\u7247\u90fd\u5df2\u5904\u7406\u5b8c\u6bd5\n                writeStream.end();\n                return resolve();\n            }\n\n            const chunkPath = chunkFiles[index];\n            const readStream = fs.createReadStream(chunkPath);\n\n            readStream.on('error', (err) =&gt; {\n                reject(err);\n            });\n\n            readStream.on('end', () =&gt; {\n                \/\/ \u6b64\u5206\u7247\u5904\u7406\u5b8c\u6210\uff0c\u7ee7\u7eed\u4e0b\u4e00\u4e2a\n                processNextChunk(index + 1);\n            });\n\n            \/\/ \u7ba1\u9053\u4f20\u8f93\u6570\u636e\n            readStream.pipe(writeStream, { end: false });\n        };\n\n        \/\/ \u5f00\u59cb\u5904\u7406\u7b2c\u4e00\u4e2a\u5206\u7247\n        processNextChunk(0);\n\n        \/\/ \u76d1\u542c\u5199\u5165\u5b8c\u6210\u4e8b\u4ef6\n        writeStream.on('finish', resolve);\n        writeStream.on('error', reject);\n    });\n}\n\n\/\/ \u542f\u52a8\u670d\u52a1\nconst PORT = 8686;\napp.listen(PORT, () =&gt; {\n    console.log(`\u670d\u52a1\u5668\u8fd0\u884c\u5728 http:\/\/localhost:${PORT}`);\n});<\/code><\/pre>\n<blockquote><p>A good memory is better than a bad pen. Record it down&#8230;<\/p><\/blockquote>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000046653231\">https:\/\/segmentfault.com\/a\/1190000046653231<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u95ee\u9898\u63cf\u8ff0 \u4e24\u5e74\u524d\uff0c\u7b14\u8005\u5199\u8fc7\u4e00\u7bc7\u6587\u7ae0 \u300a\u9762\u8bd5\u5b98\u6840\u6840\u4e00\u7b11\uff1a\u4f60\u6ca1\u505a\u8fc7\u5927\u6587\u4ef6\u4e0a\u4f20\u529f\u80fd\uff1f\u90a3\u4f60\u56de\u53bb\u7b49\u901a\u77e5\u5427\uff01\u300b \u5f53\u65f6\uff0c\u540e\u7aef [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-10020833","post","type-post","status-publish","format-standard","hentry","category-share"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10020833","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10020833"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10020833\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10020833"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10020833"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10020833"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}