fetch('/file.zip').then((resp) => { fetch('/upload', { body: resp.body, method: 'POST', duplex: 'half' }); }); 注意:目前safari不支持请求流; http1.1不支持请求流,需要HTTP2以上的协议版本 参考: [https://developer.chrome.com/docs/capabilities/web-apis/fetch...](https://link.segmentfault.com/?enc=h1KnZIr1eyWoTUI7q6Fffw%3D%3D.p60o0Hj1hIyWuvfhmpBuwhsngrwwR8Srbv46hdCzSLRhNymD%2B97jwncQq1oyVC9QTa327VyITEMiluM31%2BgGkY7K%2FDP9%2Bs4LAfPRncd3r3v%2BactX38YAOmZ5q3q%2Ft0iC)