{"id":37314,"date":"2025-05-15T14:46:09","date_gmt":"2025-05-15T06:46:09","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/37314.html"},"modified":"2025-05-15T14:46:09","modified_gmt":"2025-05-15T06:46:09","slug":"node-js-%e5%ae%9e%e6%88%98-express%e5%9b%be%e7%89%87%e4%bf%9d%e5%ad%98%e5%88%b0%e6%9c%ac%e5%9c%b0%e6%88%96%e6%9c%8d%e5%8a%a1%e5%99%a8%ef%bc%88%e4%b8%83%e7%89%9b%e4%ba%91%e3%80%81","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/37314.html","title":{"rendered":"node.js \u5b9e\u6218\u2014\u2014express\u56fe\u7247\u4fdd\u5b58\u5230\u672c\u5730\u6216\u670d\u52a1\u5668\uff08\u4e03\u725b\u4e91\u3001\u817e\u8baf\u4e91\u3001\u963f\u91cc\u4e91\uff09"},"content":{"rendered":"

\u672c\u5730<\/h2>\n

\u2705 \u4f7f\u7528formidable \u8bfb\u53d6\u8868\u5355\u5185\u5bb9<\/h3>\n

npm<\/span> i formidable <\/p>\n

\u2705 \u4f7f\u7528mime-types \u83b7\u53d6\u56fe\u7247\u540e\u7f00<\/h3>\n

npm<\/span> install<\/span> mime-types<\/p>\n

\u2705 js \u4e2d\u63d0\u4ea4form\u8868\u5355<\/h3>\n

document.<\/span>getElementById<\/span>(<\/span>'uploadForm'<\/span>)<\/span>.<\/span>addEventListener<\/span>(<\/span>'submit'<\/span>,<\/span> function<\/span>(<\/span>e<\/span>)<\/span>{<\/span><\/p>\n

e.<\/span>preventDefault<\/span>(<\/span>)<\/span>;<\/span>
\n const<\/span> blob =<\/span>preview.<\/span>_blob;<\/span>
\n if<\/span>(<\/span>!<\/span>blob)<\/span>{<\/span>
\n alert<\/span>(<\/span>"\u8bf7\u5148\u9009\u62e9\u5e76\u88c1\u526a\u5934\u50cf"<\/span>)<\/span>;<\/span>
\n return<\/span>;<\/span>
\n }<\/span>
\n const<\/span> formData =<\/span> new<\/span> FormData<\/span>(<\/span>)<\/span>;<\/span>
\n formData.<\/span>append<\/span>(<\/span>'file'<\/span>,<\/span> blob)<\/span>;<\/span><\/p>\n

\/\/\u672a\u88c1\u526a\u4f7f\u7528\u4ee3\u7801<\/span>
\n \/\/ const file =input.files[0];<\/span>
\n \/\/ if(!file) return alert('Please upload a valid image!');<\/span>
\n \/\/<\/span>
\n \/\/ let formData = new FormData();<\/span>
\n \/\/ formData.append('file', file);<\/span><\/p>\n

let<\/span> xhr =<\/span> new<\/span> XMLHttpRequest<\/span>(<\/span>)<\/span>;<\/span>
\n xhr.<\/span>open<\/span>(<\/span>'POST'<\/span>,<\/span> '\/users\/upload-avatar'<\/span>)<\/span>;<\/span><\/p>\n

xhr.<\/span>upload.<\/span>addEventListener<\/span>(<\/span>'progress'<\/span>,<\/span> (<\/span>e<\/span>)<\/span> =><\/span> {<\/span>
\n if<\/span>(<\/span>e.<\/span>lengthComputable)<\/span>{<\/span>
\n let<\/span> percent =<\/span> Math.<\/span>round<\/span>(<\/span>(<\/span>e.<\/span>loaded \/<\/span> e.<\/span>total)<\/span> *<\/span> 100<\/span>)<\/span>;<\/span>
\n progressWrapper.<\/span>classList.<\/span>remove<\/span>(<\/span>'d-none'<\/span>)<\/span>;<\/span>
\n progressBar.<\/span>style.<\/span>width=<\/span> percent +<\/span> '%'<\/span>;<\/span>
\n progressBar.<\/span>innerText =<\/span> percent +<\/span> '%'<\/span>;<\/span>
\n }<\/span>
\n }<\/span>)<\/span><\/p>\n

xhr.<\/span>onload<\/span> =<\/span>function<\/span> (<\/span>)<\/span> {<\/span>
\n if<\/span>(<\/span>xhr.<\/span>status ===<\/span> 200<\/span>)<\/span> {<\/span>
\n alert<\/span>(<\/span>"successfully uploaded!"<\/span>)<\/span>;<\/span>
\n }<\/span>else<\/span>{<\/span>
\n alert<\/span>(<\/span>"fail to upload"<\/span>)<\/span>;<\/span>
\n }<\/span>
\n }<\/span>
\n xhr.<\/span>send<\/span>(<\/span>formData)<\/span>;<\/span><\/p>\n

}<\/span>)<\/span><\/p>\n

\u2705 express \u4e2drouters\u7684js<\/h3>\n

var<\/span> express =<\/span> require<\/span>(<\/span>'express'<\/span>)<\/span>;<\/span>
\nvar<\/span> router =<\/span> express.<\/span>Router<\/span>(<\/span>)<\/span>;<\/span>
\nconst<\/span> {<\/span> IncomingForm }<\/span> =<\/span> require<\/span>(<\/span>'formidable'<\/span>)<\/span>;<\/span> \/\/ \u2705 \u6ce8\u610f\u4e0d\u662f\u76f4\u63a5 require('formidable')<\/span>
\nconst<\/span> path =<\/span> require<\/span>(<\/span>'path'<\/span>)<\/span>;<\/span>
\nconst<\/span> mime =<\/span> require<\/span>(<\/span>'mime-types'<\/span>)<\/span><\/p>\n

\/* GET users listing. *\/<\/span>
\nrouter.<\/span>get<\/span>(<\/span>'\/'<\/span>,<\/span> function<\/span>(<\/span>req,<\/span> res,<\/span> next<\/span>)<\/span> {<\/span><\/p>\n

res.<\/span>render<\/span>(<\/span>'user'<\/span>,<\/span> {<\/span> title:<\/span> '\u8ba2\u9910\u7cfb\u7edf'<\/span> }<\/span>)<\/span>;<\/span>
\n}<\/span>)<\/span>;<\/span><\/p>\n

router.<\/span>post<\/span>(<\/span>'\/upload-avatar'<\/span>,<\/span> function<\/span>(<\/span>req,<\/span> res,<\/span> next<\/span>)<\/span> {<\/span>
\n \/\/\u521b\u5efa\u8868\u5355\u5bf9\u8c61<\/span>
\n const<\/span> form =<\/span>new<\/span> IncomingForm<\/span>(<\/span>{<\/span>
\n multiple:<\/span>true<\/span>,<\/span>
\n \/\/\u8bbe\u7f6e\u4e0a\u4f20\u6587\u4ef6\u7684\u4fdd\u5b58\u76ee\u5f55<\/span>
\n uploadDir:<\/span>__dirname+<\/span>'\/..\/public\/uploads\/'<\/span>,<\/span>
\n \/\/\u4fdd\u5b58\u6587\u4ef6\u540e\u7f00<\/span>
\n keepExtension:<\/span>true<\/span>,<\/span>
\n \/\/ \u652f\u6301\u591a\u6587\u4ef6<\/span>
\n multiples:<\/span>true<\/span>,<\/span>
\n filename<\/span>:<\/span>(<\/span>name,<\/span>ext,<\/span>part,<\/span>form<\/span>)<\/span>=><\/span>{<\/span>
\n const<\/span> timestamp =<\/span> Date.<\/span>now<\/span>(<\/span>)<\/span>;<\/span>
\n let<\/span> extension =<\/span> mime.<\/span>extension<\/span>(<\/span>part.<\/span>mimetype)<\/span> ||<\/span> ''<\/span>;<\/span>
\n return<\/span> `<\/span>${<\/span>timestamp}<\/span><\/span>–<\/span>${<\/span>Math.<\/span>random<\/span>(<\/span>)<\/span>.<\/span>toString<\/span>(<\/span>36<\/span>)<\/span>.<\/span>slice<\/span>(<\/span>2<\/span>)<\/span>}<\/span><\/span>${<\/span>extension ?<\/span> '.'<\/span> +<\/span> extension :<\/span> ''<\/span>}<\/span><\/span>`<\/span><\/span>;<\/span>
\n }<\/span>
\n }<\/span>)<\/span>;<\/span>
\n \/\/<\/span>
\n form.<\/span>parse<\/span>(<\/span>req,<\/span>function<\/span>(<\/span>err,<\/span>fields,<\/span>files<\/span>)<\/span>{<\/span>
\n if<\/span>(<\/span>err)<\/span>{<\/span>
\n next<\/span>(<\/span>err)<\/span>;<\/span>
\n return<\/span>;<\/span>
\n }<\/span><\/p>\n

res.<\/span>json<\/span>(<\/span>{<\/span>files,<\/span>files}<\/span>)<\/span>;<\/span><\/p>\n

}<\/span>)<\/span><\/p>\n

}<\/span>)<\/span><\/p>\n

module.<\/span>exports =<\/span> router;<\/span><\/p>\n

\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

\u4e03\u725b\u4e91<\/h2>\n

\u2705 \u5b9e\u73b0\u6b65\u9aa4\u6982\u89c8<\/h3>\n
  • \u4f7f\u7528 formidable \u83b7\u53d6\u4e0a\u4f20\u7684\u56fe\u7247\u6d41\u6216\u4e34\u65f6\u6587\u4ef6\u8def\u5f84<\/li>\n
  • \u4f7f\u7528 qiniu SDK \u4e0a\u4f20\u5230\u4e03\u725b\u4e91\u5bf9\u8c61\u5b58\u50a8<\/li>\n
  • \u8fd4\u56de\u6587\u4ef6 URL \u7ed9\u524d\u7aef<\/li>\n

    \u2705 \u5b89\u88c5\u4f9d\u8d56<\/h3>\n

    npm<\/span> install<\/span> formidable qiniu<\/p>\n

    \u2e3b<\/p>\n

    \u2705 \u4e03\u725b\u4e91\u914d\u7f6e\u51c6\u5907<\/h3>\n

    \u4f60\u9700\u8981\u51c6\u5907\u8fd9\u4e9b\u4fe1\u606f： \u2022 accessKey \u2022 secretKey \u2022 bucket（\u7a7a\u95f4\u540d\u79f0） \u2022 domain（\u7a7a\u95f4\u7ed1\u5b9a\u7684 CDN \u57df\u540d）<\/p>\n

    \u2705 \u5b8c\u6574 Express + formidable + \u4e03\u725b \u4e0a\u4f20\u793a\u4f8b<\/h3>\n

    const<\/span> express =<\/span> require<\/span>(<\/span>'express'<\/span>)<\/span>;<\/span>
    \nconst<\/span> {<\/span> IncomingForm }<\/span> =<\/span> require<\/span>(<\/span>'formidable'<\/span>)<\/span>;<\/span>
    \nconst<\/span> fs =<\/span> require<\/span>(<\/span>'fs'<\/span>)<\/span>;<\/span>
    \nconst<\/span> path =<\/span> require<\/span>(<\/span>'path'<\/span>)<\/span>;<\/span>
    \nconst<\/span> qiniu =<\/span> require<\/span>(<\/span>'qiniu'<\/span>)<\/span>;<\/span><\/p>\n

    const<\/span> app =<\/span> express<\/span>(<\/span>)<\/span>;<\/span><\/p>\n

    \/\/ \u4e03\u725b\u914d\u7f6e<\/span>
    \nconst<\/span> accessKey =<\/span> '\u4f60\u7684AccessKey'<\/span>;<\/span>
    \nconst<\/span> secretKey =<\/span> '\u4f60\u7684SecretKey'<\/span>;<\/span>
    \nconst<\/span> bucket =<\/span> '\u4f60\u7684Bucket'<\/span>;<\/span>
    \nconst<\/span> domain =<\/span> 'http:\/\/\u4f60\u7684\u7a7a\u95f4\u57df\u540d'<\/span>;<\/span> \/\/ \u7ed1\u5b9a\u7684 CDN \u57df\u540d（\u5e26 http）<\/span><\/p>\n

    \/\/ \u4e0a\u4f20\u51ed\u8bc1<\/span>
    \nconst<\/span> mac =<\/span> new<\/span> qiniu.<\/span>auth.<\/span>digest.<\/span>Mac<\/span>(<\/span>accessKey,<\/span> secretKey)<\/span>;<\/span>
    \nconst<\/span> putPolicy =<\/span> new<\/span> qiniu.<\/span>rs.<\/span>PutPolicy<\/span>(<\/span>{<\/span> scope:<\/span> bucket }<\/span>)<\/span>;<\/span>
    \nconst<\/span> uploadToken =<\/span> putPolicy.<\/span>uploadToken<\/span>(<\/span>mac)<\/span>;<\/span><\/p>\n

    \/\/ \u4e03\u725b\u914d\u7f6e\u5bf9\u8c61<\/span>
    \nconst<\/span> config =<\/span> new<\/span> qiniu.<\/span>conf.<\/span>Config<\/span>(<\/span>)<\/span>;<\/span>
    \n\/\/ \u6839\u636e\u4f60\u7a7a\u95f4\u7684 Zone \u8bbe\u7f6e，\u5982\u534e\u4e1c\u4e3a Zone_z0<\/span>
    \nconfig.<\/span>zone =<\/span> qiniu.<\/span>zone.<\/span>Zone_z0;<\/span><\/p>\n

    \/\/ \u8868\u5355\u4e0a\u4f20\u63a5\u53e3<\/span>
    \napp.<\/span>post<\/span>(<\/span>'\/upload'<\/span>,<\/span> (<\/span>req,<\/span> res<\/span>)<\/span> =><\/span> {<\/span>
    \n const<\/span> form =<\/span> new<\/span> IncomingForm<\/span>(<\/span>{<\/span> multiples:<\/span> false<\/span>,<\/span> keepExtensions:<\/span> true<\/span> }<\/span>)<\/span>;<\/span><\/p>\n

    form.<\/span>parse<\/span>(<\/span>req,<\/span> (<\/span>err,<\/span> fields,<\/span> files<\/span>)<\/span> =><\/span> {<\/span>
    \n if<\/span> (<\/span>err)<\/span> return<\/span> res.<\/span>status<\/span>(<\/span>500<\/span>)<\/span>.<\/span>json<\/span>(<\/span>{<\/span> error:<\/span> '\u4e0a\u4f20\u5931\u8d25'<\/span> }<\/span>)<\/span>;<\/span><\/p>\n

    const<\/span> file =<\/span> files.<\/span>images ||<\/span> files.<\/span>file;<\/span>
    \n const<\/span> localFilePath =<\/span> file.<\/span>filepath ||<\/span> file.<\/span>path;<\/span> \/\/ \u4e0d\u540c\u7248\u672c\u5b57\u6bb5\u4e0d\u540c<\/span>
    \n const<\/span> fileExt =<\/span> path.<\/span>extname<\/span>(<\/span>file.<\/span>originalFilename ||<\/span> file.<\/span>name ||<\/span> ''<\/span>)<\/span>;<\/span>
    \n const<\/span> fileName =<\/span> `<\/span>${<\/span>Date.<\/span>now<\/span>(<\/span>)<\/span>}<\/span><\/span>–<\/span>${<\/span>Math.<\/span>random<\/span>(<\/span>)<\/span>.<\/span>toString<\/span>(<\/span>36<\/span>)<\/span>.<\/span>slice<\/span>(<\/span>2<\/span>)<\/span>}<\/span><\/span>${<\/span>fileExt}<\/span><\/span>`<\/span><\/span>;<\/span><\/p>\n

    const<\/span> putExtra =<\/span> new<\/span> qiniu.<\/span>form_up.<\/span>PutExtra<\/span>(<\/span>)<\/span>;<\/span>
    \n const<\/span> formUploader =<\/span> new<\/span> qiniu.<\/span>form_up.<\/span>FormUploader<\/span>(<\/span>config)<\/span>;<\/span><\/p>\n

    formUploader.<\/span>putFile<\/span>(<\/span>uploadToken,<\/span> fileName,<\/span> localFilePath,<\/span> putExtra,<\/span> (<\/span>respErr,<\/span> respBody,<\/span> respInfo<\/span>)<\/span> =><\/span> {<\/span>
    \n \/\/ \u5220\u9664\u672c\u5730\u4e34\u65f6\u6587\u4ef6（\u53ef\u9009）<\/span>
    \n fs.<\/span>unlink<\/span>(<\/span>localFilePath,<\/span> (<\/span>)<\/span> =><\/span> {<\/span>}<\/span>)<\/span>;<\/span><\/p>\n

    if<\/span> (<\/span>respErr)<\/span> return<\/span> res.<\/span>status<\/span>(<\/span>500<\/span>)<\/span>.<\/span>json<\/span>(<\/span>{<\/span> error:<\/span> '\u4e03\u725b\u4e0a\u4f20\u5931\u8d25'<\/span> }<\/span>)<\/span>;<\/span><\/p>\n

    if<\/span> (<\/span>respInfo.<\/span>statusCode ===<\/span> 200<\/span>)<\/span> {<\/span>
    \n res.<\/span>json<\/span>(<\/span>{<\/span>
    \n success:<\/span> true<\/span>,<\/span>
    \n url:<\/span> `<\/span>${<\/span>domain}<\/span><\/span>\/<\/span>${<\/span>respBody.<\/span>key}<\/span><\/span>`<\/span><\/span> \/\/ \u8fd4\u56de\u4e03\u725b\u56fe\u7247\u5730\u5740<\/span>
    \n }<\/span>)<\/span>;<\/span>
    \n }<\/span> else<\/span> {<\/span>
    \n res.<\/span>status<\/span>(<\/span>respInfo.<\/span>statusCode)<\/span>.<\/span>json<\/span>(<\/span>{<\/span> error:<\/span> respBody }<\/span>)<\/span>;<\/span>
    \n }<\/span>
    \n }<\/span>)<\/span>;<\/span>
    \n }<\/span>)<\/span>;<\/span>
    \n}<\/span>)<\/span>;<\/span><\/p>\n

    app.<\/span>listen<\/span>(<\/span>3000<\/span>,<\/span> (<\/span>)<\/span> =><\/span> {<\/span>
    \n console.<\/span>log<\/span>(<\/span>'Server running on http:\/\/localhost:3000'<\/span>)<\/span>;<\/span>
    \n}<\/span>)<\/span>;<\/span><\/p>\n

    \u2705 \u4e03\u725b\u7a7a\u95f4\u8bbe\u7f6e\u5efa\u8bae<\/h3>\n\n\u8bbe\u7f6e\u9879\u5efa\u8bae<\/tr>\n\n\n\n\n
    \u7a7a\u95f4\u7c7b\u578b<\/td>\n\u516c\u6709（\u6216\u4f7f\u7528\u79c1\u6709 + \u4e34\u65f6\u4e0b\u8f7d\u94fe\u63a5）<\/td>\n<\/tr>\n
    \u7ed1\u5b9a CDN \u57df\u540d<\/td>\n\u7528\u4e8e\u5916\u94fe\u56fe\u7247\u5730\u5740<\/td>\n<\/tr>\n
    \u8bbe\u7f6e\u9632\u76d7\u94fe<\/td>\n\u751f\u4ea7\u73af\u5883\u5efa\u8bae\u8bbe\u7f6e Referer \u9632\u76d7\u94fe<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u2705 \u6700\u7ec8\u6548\u679c<\/h3>\n

    \u4e0a\u4f20\u6210\u529f\u540e，\u524d\u7aef\u5c06\u5f97\u5230\u5f62\u5982：<\/p>\n

    { \u201csuccess\u201d: true, \u201curl\u201d: \u201chttp:\/\/cdn.yourdomain.com\/1700000000-abc123.jpg\u201d }<\/p>\n

    \u524d\u7aef\u5c31\u53ef\u4ee5\u5c06\u8fd9\u4e2a URL \u663e\u793a\u4e3a\u56fe\u7247\u5934\u50cf\u6216\u591a\u56fe\u9884\u89c8\u3002<\/p>\n

    \u817e\u8baf\u4e91<\/h2>\n

    \u5982\u679c\u4f60\u8981\u628a\u4e0a\u4f20\u7684\u56fe\u7247\u4fdd\u5b58\u5230 \u817e\u8baf\u4e91\u5bf9\u8c61\u5b58\u50a8（COS），\u53ef\u4ee5\u4f7f\u7528\u5b98\u65b9\u7684 COS Node.js SDK\u3002<\/p>\n

    \u2705 \u5b89\u88c5\u4f9d\u8d56<\/h3>\n

    npm install formidable cos–<\/span>nodejs–<\/span>sdk–<\/span>v5<\/p>\n

    \u2705 \u817e\u8baf\u4e91 COS \u51c6\u5907<\/h3>\n

    \u4f60\u9700\u8981\u51c6\u5907\u4ee5\u4e0b\u5185\u5bb9：<\/p>\n\n\u53c2\u6570\u6765\u6e90（\u817e\u8baf\u4e91\u540e\u53f0）<\/tr>\n\n\n\n\n\n
    SecretId<\/td>\n\u8bbf\u95ee\u7ba1\u7406 – API \u5bc6\u94a5\u7ba1\u7406<\/td>\n<\/tr>\n
    SecretKey<\/td>\n\u540c\u4e0a<\/td>\n<\/tr>\n
    Bucket<\/td>\n\u4f8b\u5982：example-1250000000<\/td>\n<\/tr>\n
    Region<\/td>\n\u5982 ap-nanjing<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u2705 \u540e\u7aef\u4e0a\u4f20\u56fe\u7247\u5230\u817e\u8baf\u4e91 COS<\/h3>\n

    const<\/span> express =<\/span> require<\/span>(<\/span>'express'<\/span>)<\/span>;<\/span>
    \nconst<\/span> {<\/span> IncomingForm }<\/span> =<\/span> require<\/span>(<\/span>'formidable'<\/span>)<\/span>;<\/span>
    \nconst<\/span> COS<\/span> =<\/span> require<\/span>(<\/span>'cos-nodejs-sdk-v5'<\/span>)<\/span>;<\/span>
    \nconst<\/span> fs =<\/span> require<\/span>(<\/span>'fs'<\/span>)<\/span>;<\/span>
    \nconst<\/span> path =<\/span> require<\/span>(<\/span>'path'<\/span>)<\/span>;<\/span><\/p>\n

    const<\/span> app =<\/span> express<\/span>(<\/span>)<\/span>;<\/span><\/p>\n

    \/\/ \u817e\u8baf\u4e91\u914d\u7f6e<\/span>
    \nconst<\/span> cos =<\/span> new<\/span> COS<\/span>(<\/span>{<\/span>
    \n SecretId:<\/span> '\u4f60\u7684SecretId'<\/span>,<\/span>
    \n SecretKey:<\/span> '\u4f60\u7684SecretKey'<\/span>,<\/span>
    \n}<\/span>)<\/span>;<\/span><\/p>\n

    \/\/ \u4e0a\u4f20\u63a5\u53e3<\/span>
    \napp.<\/span>post<\/span>(<\/span>'\/upload'<\/span>,<\/span> (<\/span>req,<\/span> res<\/span>)<\/span> =><\/span> {<\/span>
    \n const<\/span> form =<\/span> new<\/span> IncomingForm<\/span>(<\/span>{<\/span> keepExtensions:<\/span> true<\/span> }<\/span>)<\/span>;<\/span><\/p>\n

    form.<\/span>parse<\/span>(<\/span>req,<\/span> (<\/span>err,<\/span> fields,<\/span> files<\/span>)<\/span> =><\/span> {<\/span>
    \n if<\/span> (<\/span>err)<\/span> return<\/span> res.<\/span>status<\/span>(<\/span>500<\/span>)<\/span>.<\/span>json<\/span>(<\/span>{<\/span> error:<\/span> '\u4e0a\u4f20\u5931\u8d25'<\/span> }<\/span>)<\/span>;<\/span><\/p>\n

    const<\/span> file =<\/span> files.<\/span>file ||<\/span> files.<\/span>image ||<\/span> files.<\/span>images;<\/span>
    \n const<\/span> filePath =<\/span> file.<\/span>filepath ||<\/span> file.<\/span>path;<\/span>
    \n const<\/span> fileExt =<\/span> path.<\/span>extname<\/span>(<\/span>file.<\/span>originalFilename ||<\/span> file.<\/span>name ||<\/span> ''<\/span>)<\/span>;<\/span>
    \n const<\/span> fileName =<\/span> `<\/span>uploads\/<\/span>${<\/span>Date.<\/span>now<\/span>(<\/span>)<\/span>}<\/span><\/span>–<\/span>${<\/span>Math.<\/span>random<\/span>(<\/span>)<\/span>.<\/span>toString<\/span>(<\/span>36<\/span>)<\/span>.<\/span>slice<\/span>(<\/span>2<\/span>)<\/span>}<\/span><\/span>${<\/span>fileExt}<\/span><\/span>`<\/span><\/span>;<\/span><\/p>\n

    \/\/ \u4e0a\u4f20\u5230 COS<\/span>
    \n cos.<\/span>putObject<\/span>(<\/span>{<\/span>
    \n Bucket:<\/span> '\u4f60\u7684Bucket-\u6570\u5b57ID'<\/span>,<\/span>
    \n Region:<\/span> 'ap-\u4f60\u7684\u5730\u57df'<\/span>,<\/span>
    \n Key:<\/span> fileName,<\/span>
    \n Body:<\/span> fs.<\/span>createReadStream<\/span>(<\/span>filePath)<\/span>,<\/span>
    \n ContentLength:<\/span> fs.<\/span>statSync<\/span>(<\/span>filePath)<\/span>.<\/span>size,<\/span>
    \n }<\/span>,<\/span> (<\/span>err,<\/span> data<\/span>)<\/span> =><\/span> {<\/span>
    \n \/\/ \u5220\u9664\u4e34\u65f6\u6587\u4ef6<\/span>
    \n fs.<\/span>unlink<\/span>(<\/span>filePath,<\/span> (<\/span>)<\/span> =><\/span> {<\/span>}<\/span>)<\/span>;<\/span><\/p>\n

    if<\/span> (<\/span>err)<\/span> return<\/span> res.<\/span>status<\/span>(<\/span>500<\/span>)<\/span>.<\/span>json<\/span>(<\/span>{<\/span> error:<\/span> 'COS\u4e0a\u4f20\u5931\u8d25'<\/span>,<\/span> detail:<\/span> err }<\/span>)<\/span>;<\/span><\/p>\n

    const<\/span> url =<\/span> `<\/span>https:\/\/<\/span>${<\/span>data.<\/span>Location}<\/span><\/span>`<\/span><\/span>;<\/span>
    \n res.<\/span>json<\/span>(<\/span>{<\/span> success:<\/span> true<\/span>,<\/span> url }<\/span>)<\/span>;<\/span>
    \n }<\/span>)<\/span>;<\/span>
    \n }<\/span>)<\/span>;<\/span>
    \n}<\/span>)<\/span>;<\/span><\/p>\n

    app.<\/span>listen<\/span>(<\/span>3000<\/span>,<\/span> (<\/span>)<\/span> =><\/span> {<\/span>
    \n console.<\/span>log<\/span>(<\/span>'Server started on http:\/\/localhost:3000'<\/span>)<\/span>;<\/span>
    \n}<\/span>)<\/span>;<\/span><\/p>\n

    \u2705 \u793a\u4f8b\u8fd4\u56de<\/h3>\n

    {<\/span>
    \n "success"<\/span>:<\/span> true<\/span>,<\/span>
    \n "url"<\/span>:<\/span> "https:\/\/example-1250000000.cos.ap-nanjing.myqcloud.com\/uploads\/1700000000-abc123.jpg"<\/span>
    \n}<\/span><\/p>\n

    🛡\ufe0f \u6ce8\u610f\u4e8b\u9879<\/h3>\n
      \n
    • Bucket \u540d\u79f0\u5fc5\u987b\u662f：- \u683c\u5f0f，\u4f8b\u5982：mybucket-1250000000<\/li>\n
    • \u8bb0\u5f97\u7ed1\u5b9a\u597d CNAME \u6216\u8bbe\u7f6e\u8de8\u57df（CORS）\u7b56\u7565\u4ee5\u652f\u6301\u524d\u7aef\u8bbf\u95ee<\/li>\n
    • \u817e\u8baf\u4e91\u5bf9\u8c61\u5b58\u50a8\u4f1a\u81ea\u52a8\u751f\u6210\u516c\u7f51\u8bbf\u95ee\u94fe\u63a5（\u57fa\u4e8e\u9ed8\u8ba4\u57df\u540d）<\/li>\n<\/ul>\n

      \u963f\u91cc\u4e91<\/h2>\n

      \u5982\u679c\u4f60\u60f3\u5c06\u4e0a\u4f20\u7684\u56fe\u7247\u4fdd\u5b58\u5230 \u963f\u91cc\u4e91 OSS（\u5bf9\u8c61\u5b58\u50a8\u670d\u52a1），\u53ef\u4ee5\u4f7f\u7528\u5b98\u65b9\u7684 ali-oss Node.js SDK\u3002<\/p>\n

      \u2705 \u5b89\u88c5\u4f9d\u8d56<\/h3>\n

      npm install formidable ali–<\/span>oss<\/p>\n

      \u2705 \u51c6\u5907\u963f\u91cc\u4e91 OSS \u914d\u7f6e<\/h3>\n

      \u4f60\u9700\u8981\u8fd9\u4e9b\u4fe1\u606f：<\/p>\n\n\u9879\u76ee\u83b7\u53d6\u65b9\u5f0f<\/tr>\n\n\n\n\n\n\n
      accessKeyId<\/td>\n\u963f\u91cc\u4e91\u8d26\u53f7\u63a7\u5236\u53f0 \u2192 RAM \u7528\u6237 \u2192 \u8bbf\u95ee\u5bc6\u94a5\u7ba1\u7406<\/td>\n<\/tr>\n
      accessKeySecret<\/td>\n\u540c\u4e0a<\/td>\n<\/tr>\n
      bucket<\/td>\nOSS \u63a7\u5236\u53f0\u521b\u5efa\u7684 Bucket \u540d\u79f0<\/td>\n<\/tr>\n
      region<\/td>\nBucket \u6240\u5728\u5730\u57df，\u5982 oss-cn-hangzhou<\/td>\n<\/tr>\n
      cdnDomain<\/td>\n\u63a8\u8350\u7ed1\u5b9a\u81ea\u5b9a\u4e49 CDN \u57df\u540d，\u5982 https:\/\/img.example.com<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      \u2705 \u540e\u7aef Express \u793a\u4f8b<\/h3>\n

      const<\/span> express =<\/span> require<\/span>(<\/span>'express'<\/span>)<\/span>;<\/span>
      \nconst<\/span> {<\/span> IncomingForm }<\/span> =<\/span> require<\/span>(<\/span>'formidable'<\/span>)<\/span>;<\/span>
      \nconst<\/span> OSS<\/span> =<\/span> require<\/span>(<\/span>'ali-oss'<\/span>)<\/span>;<\/span>
      \nconst<\/span> fs =<\/span> require<\/span>(<\/span>'fs'<\/span>)<\/span>;<\/span>
      \nconst<\/span> path =<\/span> require<\/span>(<\/span>'path'<\/span>)<\/span>;<\/span><\/p>\n

      const<\/span> app =<\/span> express<\/span>(<\/span>)<\/span>;<\/span><\/p>\n

      \/\/ \u963f\u91cc\u4e91 OSS \u914d\u7f6e<\/span>
      \nconst<\/span> client =<\/span> new<\/span> OSS<\/span>(<\/span>{<\/span>
      \n region:<\/span> 'oss-cn-hangzhou'<\/span>,<\/span> \/\/ \u4fee\u6539\u4e3a\u4f60\u7684\u5730\u57df<\/span>
      \n accessKeyId:<\/span> '\u4f60\u7684AccessKeyId'<\/span>,<\/span>
      \n accessKeySecret:<\/span> '\u4f60\u7684AccessKeySecret'<\/span>,<\/span>
      \n bucket:<\/span> '\u4f60\u7684Bucket\u540d\u79f0'<\/span>,<\/span>
      \n}<\/span>)<\/span>;<\/span><\/p>\n

      const<\/span> cdnDomain =<\/span> 'https:\/\/your-cdn.example.com'<\/span>;<\/span> \/\/ \u53ef\u9009：\u7ed1\u5b9a\u7684\u81ea\u5b9a\u4e49\u57df\u540d<\/span><\/p>\n

      app.<\/span>post<\/span>(<\/span>'\/upload'<\/span>,<\/span> (<\/span>req,<\/span> res<\/span>)<\/span> =><\/span> {<\/span>
      \n const<\/span> form =<\/span> new<\/span> IncomingForm<\/span>(<\/span>{<\/span> keepExtensions:<\/span> true<\/span> }<\/span>)<\/span>;<\/span><\/p>\n

      form.<\/span>parse<\/span>(<\/span>req,<\/span> async<\/span> (<\/span>err,<\/span> fields,<\/span> files<\/span>)<\/span> =><\/span> {<\/span>
      \n if<\/span> (<\/span>err)<\/span> return<\/span> res.<\/span>status<\/span>(<\/span>500<\/span>)<\/span>.<\/span>json<\/span>(<\/span>{<\/span> error:<\/span> '\u4e0a\u4f20\u5931\u8d25'<\/span> }<\/span>)<\/span>;<\/span><\/p>\n

      const<\/span> file =<\/span> files.<\/span>file ||<\/span> files.<\/span>image ||<\/span> files.<\/span>images;<\/span>
      \n const<\/span> filePath =<\/span> file.<\/span>filepath ||<\/span> file.<\/span>path;<\/span>
      \n const<\/span> ext =<\/span> path.<\/span>extname<\/span>(<\/span>file.<\/span>originalFilename ||<\/span> file.<\/span>name ||<\/span> ''<\/span>)<\/span>;<\/span>
      \n const<\/span> fileName =<\/span> `<\/span>uploads\/<\/span>${<\/span>Date.<\/span>now<\/span>(<\/span>)<\/span>}<\/span><\/span>–<\/span>${<\/span>Math.<\/span>random<\/span>(<\/span>)<\/span>.<\/span>toString<\/span>(<\/span>36<\/span>)<\/span>.<\/span>slice<\/span>(<\/span>2<\/span>)<\/span>}<\/span><\/span>${<\/span>ext}<\/span><\/span>`<\/span><\/span>;<\/span><\/p>\n

      try<\/span> {<\/span>
      \n const<\/span> result =<\/span> await<\/span> client.<\/span>put<\/span>(<\/span>fileName,<\/span> filePath)<\/span>;<\/span>
      \n fs.<\/span>unlink<\/span>(<\/span>filePath,<\/span> (<\/span>)<\/span> =><\/span> {<\/span>}<\/span>)<\/span>;<\/span> \/\/ \u5220\u9664\u4e34\u65f6\u6587\u4ef6<\/span><\/p>\n

      res.<\/span>json<\/span>(<\/span>{<\/span>
      \n success:<\/span> true<\/span>,<\/span>
      \n url:<\/span> cdnDomain ?<\/span> `<\/span>${<\/span>cdnDomain}<\/span><\/span>\/<\/span>${<\/span>fileName}<\/span><\/span>`<\/span><\/span> :<\/span> result.<\/span>url,<\/span>
      \n }<\/span>)<\/span>;<\/span>
      \n }<\/span> catch<\/span> (<\/span>ossErr)<\/span> {<\/span>
      \n res.<\/span>status<\/span>(<\/span>500<\/span>)<\/span>.<\/span>json<\/span>(<\/span>{<\/span> error:<\/span> 'OSS\u4e0a\u4f20\u5931\u8d25'<\/span>,<\/span> detail:<\/span> ossErr }<\/span>)<\/span>;<\/span>
      \n }<\/span>
      \n }<\/span>)<\/span>;<\/span>
      \n}<\/span>)<\/span>;<\/span><\/p>\n

      app.<\/span>listen<\/span>(<\/span>3000<\/span>,<\/span> (<\/span>)<\/span> =><\/span> {<\/span>
      \n console.<\/span>log<\/span>(<\/span>'Server running at http:\/\/localhost:3000'<\/span>)<\/span>;<\/span>
      \n}<\/span>)<\/span>;<\/span><\/p>\n

      \u2705 \u793a\u4f8b\u4e0a\u4f20\u6210\u529f\u54cd\u5e94<\/h3>\n

      {<\/span>
      \n "success"<\/span>:<\/span> true<\/span>,<\/span>
      \n "url"<\/span>:<\/span> "https:\/\/your-cdn.example.com\/uploads\/1700000000-abc123.jpg"<\/span>
      \n}<\/span><\/p>\n

      📝 \u6ce8\u610f\u4e8b\u9879<\/h3>\n
        \n
      • \u63a8\u8350\u5728 OSS \u63a7\u5236\u53f0\u5f00\u542f\u8de8\u57df（CORS） \u652f\u6301，\u65b9\u4fbf\u524d\u7aef\u8bbf\u95ee<\/li>\n
      • \u4e0a\u4f20\u540e\u56fe\u7247\u5373\u523b\u53ef\u901a\u8fc7\u516c\u7f51\u57df\u540d\u8bbf\u95ee<\/li>\n
      • \u5982\u679c\u4f60\u4f7f\u7528\u7684\u662f\u7ed1\u5b9a CDN \u7684\u57df\u540d，\u8bf7\u786e\u4fdd\u7f13\u5b58\u914d\u7f6e\u6b63\u786e（\u6216\u5f00\u542f\u81ea\u52a8\u5237\u65b0）<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

        \u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb620\u6b21\uff0c\u70b9\u8d5e10\u6b21\uff0c\u6536\u85cf4\u6b21\u3002\u3010\u4ee3\u7801\u3011node.js \u5b9e\u6218\u2014\u2014express\u56fe\u7247\u4fdd\u5b58\u5230\u672c\u5730\u3002_express \u6587\u4ef6\u6d41\u4e0a\u4f20\u5230\u672c\u5730<\/p>\n","protected":false},"author":2,"featured_media":37311,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[3223,709,186],"topic":[],"class_list":["post-37314","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-node-","tag-express","tag-node-js"],"yoast_head":"\nnode.js \u5b9e\u6218\u2014\u2014express\u56fe\u7247\u4fdd\u5b58\u5230\u672c\u5730\u6216\u670d\u52a1\u5668\uff08\u4e03\u725b\u4e91\u3001\u817e\u8baf\u4e91\u3001\u963f\u91cc\u4e91\uff09 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/37314.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"node.js \u5b9e\u6218\u2014\u2014express\u56fe\u7247\u4fdd\u5b58\u5230\u672c\u5730\u6216\u670d\u52a1\u5668\uff08\u4e03\u725b\u4e91\u3001\u817e\u8baf\u4e91\u3001\u963f\u91cc\u4e91\uff09 - 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