有人知道如何在Nextjs中设置文件结构来处理多个URL参数吗？
我的网址是：/api/upload?file=${filename}&fileType=${fileType}
我的文件结构是：

app 
   api
      upload
            [filename]
                      [fileType]
                                route.ts

这是我的理解，这是什么目录应该看起来像，但我得到以下错误：

- error No HTTP methods exported in 'C:\Users\Alex\Documents\GitHub\procore-new\app\api\upload\route.ts'. Export a named export for each HTTP method.

这是我的路线代码：

import S3 from "aws-sdk/clients/s3";

import { NextResponse } from "next/server";

interface IParams {
  filename: string;
  fileType: string;
}

export async function GET(request: Request, { params }: { params: IParams }) {
  const { filename, fileType } = params;

  const s3 = new S3({
    signatureVersion: "v4",
    region: "us-east-2",
    accessKeyId: process.env.ACCESS_KEY,
    secretAccessKey: process.env.SECRET_KEY,
  });

  const preSignedUrl = await s3.getSignedUrl("putObject", {
    Bucket: process.env.BUCKET_NAME,
    Key: filename,
    ContentType: fileType,
    Expires: 5 * 60,
  });

  return NextResponse.json({ preSignedUrl });
}

我的前端请求：

"use client";

import axios from "axios";

import { toast } from "react-hot-toast";

const ImageUpload = () => {
  const uploadPhoto = async (e: React.ChangeEvent<HTMLInputElement>) => {
    const file = e.target.files?.[0]!;
    const filename = file.name;
    const fileType = file.type;

    console.log(file, filename, fileType);
    const res = await axios(
      `/api/upload?file=${filename}&fileType=${fileType}`
    );
    const { url } = await res.data;

    const config = {
      headers: {
        "Content-Type": fileType,
      },
    };

    const upload = await axios.put(url, file, config);
    if (upload.status === 200) {
      console.log("Uploaded successfully!");
    } else {
      console.error("Upload failed.");
    }

    const s3FileUrl = `https://<nextjspractice>.s3.us-east-2.amazonaws.com/${filename}`;
    console.log("file url: ", s3FileUrl);
  };

  return (
    <input type="file" accept="image/png, image/jpeg" onChange={uploadPhoto} />
  );
};

export default ImageUpload;

我在想也许可以用文件夹上的扩展操作符？也许像[... params]，但我不确定，任何帮助都将是惊人的！