CORS是一个node.js软件包，用于提供可用于通过各种选项启用CORS的Connect / Express中间件

import { filesize } from "filesize";

var cors = require("cors");
app.use(
  cors({
    origin: ["http://localhost:8000"],
    methods: ["GET", "POST"],
    alloweHeaders: ["Conten-Type", "Authorization"],
  })
);

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https://www.npmjs.com/package/cors