# 文件下载
设置相应头Content-Disposition (opens new window),以实现浏览器的附件下载功能,让浏览器自己异步下载文件,不阻塞系统其他操作
使用 nodejs 实现文件下载功能
import Koa from "koa";
import path from "path";
import fs from "fs";
const app = new Koa();
app.use(async (ctx) => {
const filePath = path.join(process.cwd(), "src/伦理道德.mp4");
const fileName = path.basename(filePath);
// 设置相应头
ctx.set("Content-Disposition", `attachment; filename=${encodeURIComponent("伦理道德.mp4")}`);
ctx.body = fs.createReadStream(filePath);
});
app.listen(3000, () => {
console.log("服务启动成功");
});
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