{"id":264439,"date":"2024-05-15T15:37:43","date_gmt":"2024-05-15T07:37:43","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/264439.html"},"modified":"2024-05-15T15:37:49","modified_gmt":"2024-05-15T07:37:49","slug":"nodejs-%e7%a8%8b%e5%ba%8f%e4%bb%a3%e7%a0%81%e6%80%8e%e4%b9%88%e5%ae%9e%e7%8e%b0%e6%96%ad%e7%82%b9%e7%bb%ad%e4%bc%a0","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/264439.html","title":{"rendered":"Nodejs \u7a0b\u5e8f\u4ee3\u7801\u600e\u4e48\u5b9e\u73b0\u65ad\u70b9\u7eed\u4f20"},"content":{"rendered":"

\"Nodejs<\/p>\n

Node.js \u7a0b\u5e8f\u4ee3\u7801\u5b9e\u73b0\u65ad\u70b9\u7eed\u4f20\u7684\u5173\u952e\u5728\u4e8e\u5728\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u7aef\u4e4b\u95f4\u534f\u8c03\u3001\u7ba1\u7406\u6587\u4ef6\u7684\u90e8\u5206\u4f20\u8f93\u3001\u8bb0\u5f55\u5df2\u4f20\u8f93\u7684\u4f4d\u7f6e<\/strong>\uff0c\u4ee5\u53ca\u5728\u4f20\u8f93\u4e2d\u65ad\u540e\u80fd\u591f\u4ece\u4e0a\u6b21\u505c\u6b62\u7684\u4f4d\u7f6e\u6062\u590d<\/strong>\u3002\u8fd9\u4e3b\u8981\u901a\u8fc7\u5185\u5bb9\u8303\u56f4\uff08Content-Range\uff09\u8bf7\u6c42\u5934\u548c\u591a\u6bb5\u4e0b\u8f7d\u5b9e\u73b0\u3002\u5176\u4e2d\uff0c\u8bb0\u5f55\u5df2\u4f20\u8f93\u7684\u4f4d\u7f6e<\/strong>\u662f\u6838\u5fc3\uff0c\u56e0\u4e3a\u5b83\u51b3\u5b9a\u4e86\u4f20\u8f93\u53ef\u4ee5\u4ece\u4f55\u5904\u6062\u590d\uff0c\u907f\u514d\u4e86\u91cd\u590d\u4f20\u8f93\u5df2\u5b8c\u6210\u7684\u90e8\u5206\uff0c\u8282\u7701\u4e86\u5e26\u5bbd\u548c\u65f6\u95f4\u3002<\/p>\n<\/p>\n

\u5728\u8be6\u7ec6\u8bb2\u89e3\u5b8c\u6574\u7684\u5b9e\u73b0\u4e4b\u524d\uff0c\u6211\u4eec\u9996\u5148\u4e86\u89e3\u65ad\u70b9\u7eed\u4f20\u7684\u57fa\u672c\u673a\u5236\u3002\u65ad\u70b9\u7eed\u4f20\u6280\u672f\u5141\u8bb8\u6587\u4ef6\u7684\u4f20\u8f93\u8fc7\u7a0b\u5728\u7f51\u7edc\u4e2d\u65ad\u6216\u5176\u4ed6\u6545\u969c\u540e\uff0c\u80fd\u591f\u91cd\u65b0\u5f00\u59cb\u4f20\u8f93\u672a\u5b8c\u6210\u7684\u90e8\u5206\uff0c\u800c\u975e\u91cd\u65b0\u5f00\u59cb\u3002\u8fd9\u5728\u5904\u7406\u5927\u6587\u4ef6\u6216\u5728\u4e0d\u7a33\u5b9a\u7684\u7f51\u7edc\u73af\u5883\u4e2d\u7279\u522b\u6709\u7528\u3002\u5728Node.js\u4e2d\u5b9e\u73b0\u8fd9\u4e00\u529f\u80fd\uff0c\u901a\u5e38\u9700\u8981\u7ed3\u5408HTTP\u534f\u8bae\u4e2d\u7684\u4e00\u4e9b\u7279\u5b9a\u6807\u5934\uff08\u5982Content-Range<\/code>\uff09\u548c\u72b6\u6001\u7801\uff08\u5982206 Partial Content\uff09\u6765\u5b9e\u73b0\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u6982\u89c8\u65ad\u70b9\u7eed\u4f20\u673a\u5236<\/h3>\n<\/p>\n

\u5728\u5b9e\u73b0\u5177\u4f53\u4ee3\u7801\u4e4b\u524d\uff0c\u7406\u89e3\u65ad\u70b9\u7eed\u4f20\u7684\u5de5\u4f5c\u539f\u7406\u662f\u91cd\u8981\u7684\u3002\u5f53\u5ba2\u6237\u7aef\u5f00\u59cb\u4e0a\u4f20\u6216\u4e0b\u8f7d\u6587\u4ef6\u65f6\uff0c\u5b83\u9996\u5148\u68c0\u67e5\u5df2\u7ecf\u4f20\u8f93\u7684\u90e8\u5206\u3002\u5982\u679c\u53d1\u73b0\u4e4b\u524d\u7684\u4f20\u8f93\u88ab\u4e2d\u65ad\uff0c\u5b83\u4f1a\u5411\u670d\u52a1\u5668\u53d1\u9001\u5305\u542bContent-Range<\/code>\u5934\u7684\u8bf7\u6c42\uff0c\u6307\u660e\u5df2\u63a5\u6536\u6216\u4e0a\u4f20\u90e8\u5206\u7684\u5b57\u8282\u8303\u56f4\u3002\u670d\u52a1\u5668\u6536\u5230\u8fd9\u6837\u7684\u8bf7\u6c42\u540e\uff0c\u4f1a\u4ece\u6307\u5b9a\u7684\u4f4d\u7f6e\u7ee7\u7eed\u4f20\u8f93\u5269\u4f59\u90e8\u5206\u3002<\/p>\n<\/p>\n

\u4e8c\u3001\u5ba2\u6237\u7aef\u5b9e\u73b0\u7ec6\u8282<\/h3>\n<\/p>\n

\u5ba2\u6237\u7aef\u5b9e\u73b0\u65ad\u70b9\u7eed\u4f20\u9996\u8981\u4efb\u52a1\u662f\u8bb0\u5f55\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u7684\u72b6\u6001\uff0c\u7279\u522b\u662f\u5df2\u6210\u529f\u4f20\u8f93\u7684\u6570\u636e\u8303\u56f4\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7\u5efa\u7acb\u4e00\u4e2a\u672c\u5730\u6587\u4ef6\u6216\u4f7f\u7528\u6570\u636e\u5e93\u6765\u5b9e\u73b0\uff0c\u8bb0\u5f55\u6bcf\u6b21\u4f20\u8f93\u7684\u5f00\u59cb\u548c\u7ed3\u675f\u4f4d\u7f6e\u3002<\/p>\n<\/p>\n

    \n
  1. \n

    \u5efa\u7acb\u8bb0\u5f55\u673a\u5236\uff1a\u5728\u5f00\u59cb\u4f20\u8f93\u4e4b\u524d\uff0c\u5ba2\u6237\u7aef\u9700\u8981\u68c0\u67e5\u662f\u5426\u5b58\u5728\u5df2\u7ecf\u5f00\u59cb\u4f46\u672a\u5b8c\u6210\u7684\u4f20\u8f93\u4efb\u52a1\u3002\u5982\u679c\u5b58\u5728\uff0c\u5e94\u4ece\u4e0a\u6b21\u505c\u6b62\u7684\u4f4d\u7f6e\u6062\u590d\u4f20\u8f93\u3002<\/p>\n<\/p>\n<\/li>\n

  2. \n

    \u53d1\u9001\u8303\u56f4\u8bf7\u6c42\uff1a\u5982\u679c\u5ba2\u6237\u7aef\u68c0\u6d4b\u5230\u4e4b\u524d\u7684\u4f20\u8f93\u8fc7\u7a0b\u88ab\u4e2d\u65ad\uff0c\u5b83\u5c06\u901a\u8fc7\u53d1\u9001\u5305\u542bRange<\/code>\u8bf7\u6c42\u5934\u7684HTTP\u8bf7\u6c42\u6765\u6062\u590d\u4f20\u8f93\uff0c\u544a\u8bc9\u670d\u52a1\u5668\u4ece\u54ea\u91cc\u5f00\u59cb\u7ee7\u7eed\u4f20\u8f93\u3002<\/p>\n<\/p>\n<\/li>\n<\/ol>\n

    \u4e09\u3001\u670d\u52a1\u5668\u7aef\u5b9e\u73b0\u7ec6\u8282<\/h3>\n<\/p>\n

    \u670d\u52a1\u5668\u7aef\u7684\u5173\u952e\u662f\u80fd\u591f\u63a5\u6536\u548c\u89e3\u6790Range<\/code>\u8bf7\u6c42\u5934\uff0c\u5e76\u4ece\u8bf7\u6c42\u7684\u4f4d\u7f6e\u5f00\u59cb\u4f20\u8f93\u6587\u4ef6\u3002\u540c\u65f6\uff0c\u670d\u52a1\u5668\u8fd8\u9700\u8981\u80fd\u591f\u5728\u5185\u90e8\u8ddf\u8e2a\u6587\u4ef6\u7684\u4f20\u8f93\u72b6\u6001\uff0c\u4ee5\u4fbf\u6b63\u786e\u54cd\u5e94\u8303\u56f4\u8bf7\u6c42\u3002<\/p>\n<\/p>\n

      \n
    1. \n

      \u89e3\u6790\u8303\u56f4\u8bf7\u6c42\uff1a\u670d\u52a1\u5668\u9700\u8981\u80fd\u591f\u89e3\u6790HTTP\u8bf7\u6c42\u4e2d\u7684Range<\/code>\u6216Content-Range<\/code>\u5934\uff0c\u4ee5\u786e\u5b9a\u5ba2\u6237\u7aef\u8bf7\u6c42\u7684\u5b57\u8282\u8303\u56f4\u3002<\/p>\n<\/p>\n<\/li>\n

    2. \n

      \u5206\u6bb5\u4f20\u8f93\u6587\u4ef6\uff1a\u6839\u636e\u5ba2\u6237\u7aef\u8bf7\u6c42\u7684\u8303\u56f4\uff0c\u670d\u52a1\u5668\u53ea\u4f20\u8f93\u6587\u4ef6\u7684\u4e00\u90e8\u5206\u3002\u8fd9\u901a\u5e38\u901a\u8fc7\u8bfb\u53d6\u6587\u4ef6\u7684\u6307\u5b9a\u90e8\u5206\u5e76\u5c06\u5176\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef\u6765\u5b9e\u73b0\u3002<\/p>\n<\/p>\n<\/li>\n<\/ol>\n

      \u56db\u3001\u65ad\u70b9\u7eed\u4f20\u7684\u5177\u4f53\u5b9e\u73b0<\/h3>\n<\/p>\n

      \u5b9e\u73b0\u65ad\u70b9\u7eed\u4f20\u4e0d\u4ec5\u4ec5\u662f\u5904\u7406\u8303\u56f4\u8bf7\u6c42\u90a3\u4e48\u7b80\u5355\uff0c\u8fd8\u9700\u8981\u5904\u7406\u5404\u79cd\u8fb9\u754c\u6761\u4ef6\u548c\u6f5c\u5728\u7684\u9519\u8bef\u3002\u4ee5\u4e0b\u662f\u5177\u4f53\u5b9e\u73b0\u7684\u6b65\u9aa4\u548c\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n<\/p>\n

      \u4e00\u3001\u8bbe\u7f6e\u5ba2\u6237\u7aef\u8bf7\u6c42<\/h4>\n<\/p>\n

      \u5ba2\u6237\u7aef\u9700\u8981\u51c6\u5907\u597d\u53d1\u9001\u5e26\u6709\u8303\u56f4\u5934\u7684\u8bf7\u6c42\u3002\u5728Node.js\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528http<\/code>\u6216https<\/code>\u6a21\u5757\u53d1\u9001\u6b64\u7c7b\u8bf7\u6c42\uff0c\u5e76\u5728\u8bf7\u6c42\u5934\u4e2d\u660e\u786e\u6307\u660e\u201cRange\u201d\u3002<\/p>\n<\/p>\n

      const fs = require('fs');<\/p>\n
      const http = require('http');<\/p>\n
      let start = 0; \/\/ \u793a\u4f8b\uff0c\u5b9e\u9645\u503c\u5e94\u8be5\u4ece\u8bb0\u5f55\u7684\u4f20\u8f93\u72b6\u6001\u4e2d\u83b7\u53d6<\/p>\n
      const end = 999; \/\/ \u793a\u4f8b\uff0c\u5b9e\u9645\u503c\u6839\u636e\u9700\u8981\u8c03\u6574<\/p>\n
      const options = {<\/p>\n
          hostname: 'example.com',<\/p>\n
          port: 80,<\/p>\n
          path: '\/path\/to\/file',<\/p>\n
          method: 'GET',<\/p>\n
          headers: {<\/p>\n
              Range: `bytes=${start}-${end}`<\/p>\n
          }<\/p>\n
      };<\/p>\n
      const req = http.request(options, (res) => {<\/p>\n
          res.pipe(fs.createWriteStream('part-of-file'));<\/p>\n
      });<\/p>\n
      req.on('error', (e) => {<\/p>\n
          console.error(`\u8bf7\u6c42\u9047\u5230\u95ee\u9898: ${e.message}`);<\/p>\n
      });<\/p>\n
      req.end();<\/p>\n
      <\/code><\/pre>\n<\/p>\n
      \u8fd9\u6bb5\u4ee3\u7801\u793a\u4f8b\u4ece\u670d\u52a1\u5668\u8bf7\u6c42\u6587\u4ef6\u7684\u4e00\u4e2a\u90e8\u5206\uff0c\u5e76\u5c06\u5176\u4fdd\u5b58\u5230\u672c\u5730\u3002\u5b83\u5047\u8bbe\u4f60\u5df2\u7ecf\u77e5\u9053\u8981\u8bf7\u6c42\u7684\u6587\u4ef6\u90e8\u5206\u7684\u8d77\u59cb\u548c\u7ed3\u675f\u5b57\u8282\u4f4d\u7f6e\u3002<\/p>\n<\/p>\n
      \u4e8c\u3001\u5904\u7406\u670d\u52a1\u5668\u7aef\u54cd\u5e94<\/h4>\n<\/p>\n
      \u670d\u52a1\u5668\u7aef\u9700\u8981\u6070\u5f53\u5730\u5904\u7406Range<\/code>\u8bf7\u6c42\uff0c\u5e76\u8fd4\u56de\u6240\u8bf7\u6c42\u7684\u6587\u4ef6\u90e8\u5206\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528Node.js http<\/code>\u6a21\u5757\u5b9e\u73b0\u7684\u7b80\u5355\u670d\u52a1\u5668\u7aef\u4ee3\u7801\uff0c\u8be5\u4ee3\u7801\u53ef\u4ee5\u54cd\u5e94\u8303\u56f4\u8bf7\u6c42\u5e76\u8fd4\u56de\u6587\u4ef6\u7684\u6307\u5b9a\u90e8\u5206\u3002<\/p>\n<\/p>\n
      const fs = require('fs');<\/p>\n
      const http = require('http');<\/p>\n
      const server = http.createServer((req, res) => {<\/p>\n
          const range = req.headers.range;<\/p>\n
          if (range) {<\/p>\n
              \/\/ \u89e3\u6790Range\u5934\u90e8\u5185\u5bb9<\/p>\n
              const positions = range.replace(\/bytes=\/, "").split("-");<\/p>\n
              const start = parseInt(positions[0], 10);<\/p>\n
              \/\/ \u4ee5\u4e0b\u7b80\u5316\u4e86\u5904\u7406\u903b\u8f91\u548c\u9519\u8bef\u5904\u7406<\/p>\n
              const fileStream = fs.createReadStream('path\/to\/file', {start: start, end: end});<\/p>\n
              res.writeHead(206, {'Content-Range': `bytes ${start}-${end}\/totalSize`});<\/p>\n
              fileStream.pipe(res);<\/p>\n
          } else {<\/p>\n
              \/\/ \u5904\u7406\u975eRange\u8bf7\u6c42<\/p>\n
              res.writeHead(200);<\/p>\n
              fs.createReadStream('path\/to\/file').pipe(res);<\/p>\n
          }<\/p>\n
      });<\/p>\n
      server.listen(8000, () => {<\/p>\n
          console.log('\u670d\u52a1\u5668\u8fd0\u884c\u5728 http:\/\/localhost:8000\/');<\/p>\n
      });<\/p>\n
      <\/code><\/pre>\n<\/p>\n
      \u8fd9\u7b80\u5316\u4e86\u7684\u4ee3\u7801\u5c55\u793a\u4e86\u5982\u4f55\u89e3\u6790Range<\/code>\u5934\uff0c\u4ee5\u53ca\u5982\u4f55\u4ec5\u53d1\u9001\u8bf7\u6c42\u7684\u6587\u4ef6\u90e8\u5206\u3002\u52a1\u5fc5\u6ce8\u610f\uff0c\u8fd9\u91cc\u7701\u7565\u4e86\u5f88\u591a\u5b9e\u9645\u5e94\u7528\u4e2d\u9700\u8981\u5904\u7406\u7684\u7ec6\u8282\uff0c\u5982\u9519\u8bef\u5904\u7406\u3001\u9a8c\u8bc1\u8bf7\u6c42\u8303\u56f4\u7684\u5408\u6cd5\u6027\u4ee5\u53ca\u5904\u7406\u591a\u8303\u56f4\u7684\u8bf7\u6c42\u7b49\u3002<\/p>\n<\/p>\n
      \u4e94\u3001\u7efc\u5408\u8003\u8651<\/h3>\n<\/p>\n
      \u5b9e\u73b0\u65ad\u70b9\u7eed\u4f20\u4e0d\u4ec5\u9700\u8981\u5904\u7406\u4e0a\u8ff0\u5b9e\u73b0\u7ec6\u8282\uff0c\u8fd8\u9700\u8981\u7efc\u5408\u8003\u8651\u9519\u8bef\u5904\u7406\u3001\u5b89\u5168\u6027\uff08\u5982\u5bf9\u8303\u56f4\u5934\u7684\u9a8c\u8bc1\uff0c\u9632\u6b62\u8d44\u6e90\u7a77\u5c3d\u653b\u51fb\uff09\u3001\u6027\u80fd\u4f18\u5316\uff08\u5982\u4f7f\u7528\u9002\u5f53\u7684\u7f13\u5b58\u7b56\u7565\uff09\u7b49\u591a\u65b9\u9762\u7684\u56e0\u7d20\u3002\u6b64\u5916\uff0c\u4e3a\u4e86\u63d0\u4f9b\u66f4\u52a0\u5065\u58ef\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u73b0\u6210\u7684\u5e93\u6216\u8005\u6846\u67b6\uff0c\u8fd9\u4e9b\u901a\u5e38\u4e3a\u65ad\u70b9\u7eed\u4f20\u63d0\u4f9b\u4e86\u66f4\u4e3a\u5b8c\u5907\u7684\u5b9e\u73b0\u3002<\/p>\n<\/p>\n
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