如何在 res.setHeader express.js 中使用变量传递值

Question

Trying to send file on the frontend with its name and extension.

var fileReadStream = fs.createReadStream(filePath);
res.setHeader("Content-disposition", `attachment; filename=${fileName}`);
fileReadStream.pipe(res);

On the frontend, getting ERR_RESPONSE_HEADERS_MULTIPLE_CONTENT_DISPOSITION

How can I send the file name with its extension to download on the frontend?

Answer 1

You need to set the header like this

Content-Disposition: attachment; filename="filename.jpg"

In your case you should do it like below

var fileReadStream = fs.createReadStream(filePath);
res.setHeader(`Content-Disposition: attachment; filename=${fileName}`);
fileReadStream.pipe(res);